From: Uwe Hermann Date: Tue, 1 Apr 2014 19:47:11 +0000 (+0200) Subject: Rename 'chronovu-la8' driver to 'chronovu-la'. X-Git-Tag: libsigrok-0.3.0~96 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=7b3567126c22622180d82463f4f848606d52d2cd;p=libsigrok.git Rename 'chronovu-la8' driver to 'chronovu-la'. The driver now also supports the LA16 device (and possibly others in the future). --- diff --git a/Makefile.am b/Makefile.am index 7902c990..81a8176d 100644 --- a/Makefile.am +++ b/Makefile.am @@ -156,11 +156,11 @@ libsigrok_la_SOURCES += \ hardware/center-3xx/protocol.c \ hardware/center-3xx/api.c endif -if HW_CHRONOVU_LA8 +if HW_CHRONOVU_LA libsigrok_la_SOURCES += \ - hardware/chronovu-la8/protocol.h \ - hardware/chronovu-la8/protocol.c \ - hardware/chronovu-la8/api.c + hardware/chronovu-la/protocol.h \ + hardware/chronovu-la/protocol.c \ + hardware/chronovu-la/api.c endif if HW_COLEAD_SLM libsigrok_la_SOURCES += \ diff --git a/README.devices b/README.devices index 30f8e474..554805a9 100644 --- a/README.devices +++ b/README.devices @@ -56,7 +56,7 @@ The following drivers/devices do not need any firmware upload: - brymen-dmm - cem-dt-885x - center-3xx (including all subdrivers) - - chronovu-la8 + - chronovu-la - colead-slm - demo - fluke-dmm @@ -119,7 +119,7 @@ The following drivers/devices do not require a serial port specification: - alsa - asix-sigma - brymen-bm86x - - chronovu-la8 + - chronovu-la - demo - fx2lafw - hantek-dso @@ -340,20 +340,19 @@ system). Thus, this driver can currently only compile and work on Linux. We plan to fix this though, so that it'll work on all other OSes, too. -ChronoVu LA8 USB VID/PIDs -------------------------- +ChronoVu LA8/LA16 USB VID/PIDs +------------------------------ -The ChronoVu LA8 logic analyzer is available in two revisions. Previously, -the LA8 shipped with a USB VID/PID of 0403:6001, which is the standard ID +The ChronoVu LA8/LA16 logic analyzer is available in two revisions. Previously, +the device shipped with a USB VID/PID of 0403:6001, which is the standard ID for FTDI FT232 USB chips. -Since this made it hard to distinguish the LA8 from any other device +Since this made it hard to distinguish the LA8/LA16 from any other device with this FTDI chip connected to the PC, the vendor later shipped the -LA8 with a USB VID/PID of 0403:8867. +device with a USB VID/PID of 0403:8867. -The 'chronovu-la8' driver in libsigrok supports both VID/PID pairs and -automatically finds devices with either VID/PID pair. However, currently -the driver will assume any device with VID/PID 0403:6001 is a ChronoVu LA8. +The 'chronovu-la' driver in libsigrok supports both VID/PID pairs and +automatically finds devices with either VID/PID pair. OLS diff --git a/configure.ac b/configure.ac index a7eb8f56..b76110fe 100644 --- a/configure.ac +++ b/configure.ac @@ -129,10 +129,10 @@ AC_ARG_ENABLE(center-3xx, AC_HELP_STRING([--enable-center-3xx], [HW_CENTER_3XX="$enableval"], [HW_CENTER_3XX=$HW_ENABLED_DEFAULT]) -AC_ARG_ENABLE(chronovu-la8, AC_HELP_STRING([--enable-chronovu-la8], - [enable ChronoVu LA8 support [default=yes]]), - [HW_CHRONOVU_LA8="$enableval"], - [HW_CHRONOVU_LA8=$HW_ENABLED_DEFAULT]) +AC_ARG_ENABLE(chronovu-la, AC_HELP_STRING([--enable-chronovu-la], + [enable ChronoVu LA support [default=yes]]), + [HW_CHRONOVU_LA="$enableval"], + [HW_CHRONOVU_LA=$HW_ENABLED_DEFAULT]) AC_ARG_ENABLE(colead-slm, AC_HELP_STRING([--enable-colead-slm], [enable Colead SLM support [default=yes]]), @@ -379,7 +379,7 @@ PKG_CHECK_MODULES([libftdi], [libftdi >= 0.16], [CFLAGS="$CFLAGS $libftdi_CFLAGS"; LIBS="$LIBS $libftdi_LIBS"; SR_PKGLIBS="$SR_PKGLIBS libftdi"], - [HW_ASIX_SIGMA="no"; HW_CHRONOVU_LA8="no"; HW_IKALOGIC_SCANAPLUS="no"]) + [HW_ASIX_SIGMA="no"; HW_CHRONOVU_LA="no"; HW_IKALOGIC_SCANAPLUS="no"]) # libudev is only needed for some hardware drivers. Disable them if not found. PKG_CHECK_MODULES([libudev], [libudev >= 151], @@ -456,9 +456,9 @@ if test "x$HW_CENTER_3XX" = "xyes"; then AC_DEFINE(HAVE_HW_CENTER_3XX, 1, [Center 3xx support]) fi -AM_CONDITIONAL(HW_CHRONOVU_LA8, test x$HW_CHRONOVU_LA8 = xyes) -if test "x$HW_CHRONOVU_LA8" = "xyes"; then - AC_DEFINE(HAVE_HW_CHRONOVU_LA8, 1, [ChronoVu LA8 support]) +AM_CONDITIONAL(HW_CHRONOVU_LA, test x$HW_CHRONOVU_LA = xyes) +if test "x$HW_CHRONOVU_LA" = "xyes"; then + AC_DEFINE(HAVE_HW_CHRONOVU_LA, 1, [ChronoVu LA support]) fi AM_CONDITIONAL(HW_COLEAD_SLM, test x$HW_COLEAD_SLM = xyes) @@ -648,7 +648,7 @@ echo " - brymen-bm86x.................... $HW_BRYMEN_BM86X" echo " - brymen-dmm...................... $HW_BRYMEN_DMM" echo " - cem-dt-885x..................... $HW_CEM_DT_885X" echo " - center-3xx...................... $HW_CENTER_3XX" -echo " - chronovu-la8.................... $HW_CHRONOVU_LA8" +echo " - chronovu-la..................... $HW_CHRONOVU_LA" echo " - colead-slm...................... $HW_COLEAD_SLM" echo " - conrad-digi-35-cpu.............. $HW_CONRAD_DIGI_35_CPU" echo " - demo............................ $HW_DEMO" diff --git a/hardware/chronovu-la/api.c b/hardware/chronovu-la/api.c new file mode 100644 index 00000000..d783f4fe --- /dev/null +++ b/hardware/chronovu-la/api.c @@ -0,0 +1,532 @@ +/* + * This file is part of the libsigrok project. + * + * Copyright (C) 2011-2014 Uwe Hermann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "protocol.h" + +SR_PRIV struct sr_dev_driver chronovu_la_driver_info; +static struct sr_dev_driver *di = &chronovu_la_driver_info; + +static const int32_t hwcaps[] = { + SR_CONF_LOGIC_ANALYZER, + SR_CONF_SAMPLERATE, + SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */ + SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ +}; + +/* The ChronoVu LA8/LA16 can have multiple VID/PID pairs. */ +static struct { + uint16_t vid; + uint16_t pid; + int model; + const char *iproduct; +} vid_pid[] = { + { 0x0403, 0x6001, CHRONOVU_LA8, "ChronoVu LA8" }, + { 0x0403, 0x8867, CHRONOVU_LA8, "ChronoVu LA8" }, + { 0x0403, 0x6001, CHRONOVU_LA16, "ChronoVu LA16" }, + { 0x0403, 0x8867, CHRONOVU_LA16, "ChronoVu LA16" }, +}; + +static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); + +static void clear_helper(void *priv) +{ + struct dev_context *devc; + + devc = priv; + + ftdi_free(devc->ftdic); + g_free(devc->final_buf); +} + +static int dev_clear(void) +{ + return std_dev_clear(di, clear_helper); +} + +static int init(struct sr_context *sr_ctx) +{ + return std_init(sr_ctx, di, LOG_PREFIX); +} + +static int add_device(int idx, int model, GSList **devices) +{ + int ret; + unsigned int i; + struct sr_dev_inst *sdi; + struct drv_context *drvc; + struct dev_context *devc; + struct sr_channel *ch; + + ret = SR_OK; + + drvc = di->priv; + + /* Allocate memory for our private device context. */ + devc = g_try_malloc(sizeof(struct dev_context)); + + /* Set some sane defaults. */ + devc->prof = &cv_profiles[model]; + devc->ftdic = NULL; /* Will be set in the open() API call. */ + devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ + devc->limit_msec = 0; + devc->limit_samples = 0; + devc->cb_data = NULL; + memset(devc->mangled_buf, 0, BS); + devc->final_buf = NULL; + devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ + devc->trigger_mask = 0x0000; /* All channels: "don't care". */ + devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ + devc->trigger_found = 0; + devc->done = 0; + devc->block_counter = 0; + devc->divcount = 0; + devc->usb_vid = vid_pid[idx].vid; + devc->usb_pid = vid_pid[idx].pid; + memset(devc->samplerates, 0, sizeof(uint64_t) * 255); + + /* Allocate memory where we'll store the de-mangled data. */ + if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { + sr_err("Failed to allocate memory for sample buffer."); + ret = SR_ERR_MALLOC; + goto err_free_devc; + } + + /* We now know the device, set its max. samplerate as default. */ + devc->cur_samplerate = devc->prof->max_samplerate; + + /* Register the device with libsigrok. */ + sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, + "ChronoVu", devc->prof->modelname, NULL); + if (!sdi) { + sr_err("Failed to create device instance."); + ret = SR_ERR; + goto err_free_final_buf; + } + sdi->driver = di; + sdi->priv = devc; + + for (i = 0; i < devc->prof->num_channels; i++) { + if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, + cv_channel_names[i]))) { + ret = SR_ERR; + goto err_free_dev_inst; + } + sdi->channels = g_slist_append(sdi->channels, ch); + } + + *devices = g_slist_append(*devices, sdi); + drvc->instances = g_slist_append(drvc->instances, sdi); + + return SR_OK; + +err_free_dev_inst: + sr_dev_inst_free(sdi); +err_free_final_buf: + g_free(devc->final_buf); +err_free_devc: + g_free(devc); + + return ret; +} + +static GSList *scan(GSList *options) +{ + int ret; + unsigned int i; + GSList *devices; + struct ftdi_context *ftdic; + + (void)options; + + devices = NULL; + + /* Allocate memory for the FTDI context and initialize it. */ + if (!(ftdic = ftdi_new())) { + sr_err("Failed to initialize libftdi."); + return NULL; + } + + /* Check for LA8 and/or LA16 devices with various VID/PIDs. */ + for (i = 0; i < ARRAY_SIZE(vid_pid); i++) { + ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid, + vid_pid[i].pid, vid_pid[i].iproduct, NULL); + if (ret < 0) + continue; /* No device found. */ + + sr_dbg("Found %s device (%04x:%04x).", + vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid); + + if ((ret = add_device(i, vid_pid[i].model, &devices)) < 0) + sr_dbg("Failed to add device: %d.", ret); + + if ((ret = ftdi_usb_close(ftdic)) < 0) + sr_dbg("Failed to close FTDI device (%d): %s.", + ret, ftdi_get_error_string(ftdic)); + } + + /* Close USB device, deinitialize and free the FTDI context. */ + ftdi_free(ftdic); + ftdic = NULL; + + return devices; +} + +static GSList *dev_list(void) +{ + return ((struct drv_context *)(di->priv))->instances; +} + +static int dev_open(struct sr_dev_inst *sdi) +{ + struct dev_context *devc; + int ret; + + ret = SR_ERR; + + if (!(devc = sdi->priv)) + return SR_ERR_BUG; + + /* Allocate memory for the FTDI context and initialize it. */ + if (!(devc->ftdic = ftdi_new())) { + sr_err("Failed to initialize libftdi."); + return SR_ERR; + } + + sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, + devc->usb_vid, devc->usb_pid); + + /* Open the device. */ + if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, + devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { + sr_err("Failed to open FTDI device (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + goto err_ftdi_free; + } + sr_dbg("Device opened successfully."); + + /* Purge RX/TX buffers in the FTDI chip. */ + if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { + sr_err("Failed to purge FTDI buffers (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + goto err_ftdi_free; + } + sr_dbg("FTDI buffers purged successfully."); + + /* Enable flow control in the FTDI chip. */ + if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { + sr_err("Failed to enable FTDI flow control (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + goto err_ftdi_free; + } + sr_dbg("FTDI flow control enabled successfully."); + + /* Wait 100ms. */ + g_usleep(100 * 1000); + + sdi->status = SR_ST_ACTIVE; + + return SR_OK; + +err_ftdi_free: + ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ + devc->ftdic = NULL; + return ret; +} + +static int dev_close(struct sr_dev_inst *sdi) +{ + int ret; + struct dev_context *devc; + + if (sdi->status != SR_ST_ACTIVE) + return SR_OK; + + devc = sdi->priv; + + if (devc->ftdic && (ret = ftdi_usb_close(devc->ftdic)) < 0) + sr_err("Failed to close FTDI device (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + sdi->status = SR_ST_INACTIVE; + + return SR_OK; +} + +static int cleanup(void) +{ + return dev_clear(); +} + +static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) +{ + struct dev_context *devc; + + (void)cg; + + switch (id) { + case SR_CONF_SAMPLERATE: + if (!sdi || !(devc = sdi->priv)) + return SR_ERR_BUG; + *data = g_variant_new_uint64(devc->cur_samplerate); + break; + default: + return SR_ERR_NA; + } + + return SR_OK; +} + +static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) +{ + struct dev_context *devc; + + (void)cg; + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR_DEV_CLOSED; + + if (!(devc = sdi->priv)) + return SR_ERR_BUG; + + switch (id) { + case SR_CONF_SAMPLERATE: + if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) + return SR_ERR; + break; + case SR_CONF_LIMIT_MSEC: + if (g_variant_get_uint64(data) == 0) + return SR_ERR_ARG; + devc->limit_msec = g_variant_get_uint64(data); + break; + case SR_CONF_LIMIT_SAMPLES: + if (g_variant_get_uint64(data) == 0) + return SR_ERR_ARG; + devc->limit_samples = g_variant_get_uint64(data); + break; + default: + return SR_ERR_NA; + } + + return SR_OK; +} + +static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) +{ + GVariant *gvar, *grange[2]; + GVariantBuilder gvb; + struct dev_context *devc; + + (void)cg; + + switch (key) { + case SR_CONF_DEVICE_OPTIONS: + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); + break; + case SR_CONF_SAMPLERATE: + if (!sdi || !sdi->priv || !(devc = sdi->priv)) + return SR_ERR_BUG; + cv_fill_samplerates_if_needed(sdi); + g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); + gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), + devc->samplerates, + ARRAY_SIZE(devc->samplerates), + sizeof(uint64_t)); + g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); + *data = g_variant_builder_end(&gvb); + break; + case SR_CONF_LIMIT_SAMPLES: + grange[0] = g_variant_new_uint64(0); + grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES); + *data = g_variant_new_tuple(grange, 2); + break; + case SR_CONF_TRIGGER_TYPE: + if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) + return SR_ERR_BUG; + *data = g_variant_new_string(devc->prof->trigger_type); + break; + default: + return SR_ERR_NA; + } + + return SR_OK; +} + +static int receive_data(int fd, int revents, void *cb_data) +{ + int i, ret; + struct sr_dev_inst *sdi; + struct dev_context *devc; + + (void)fd; + (void)revents; + + if (!(sdi = cb_data)) { + sr_err("cb_data was NULL."); + return FALSE; + } + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return FALSE; + } + + if (!devc->ftdic) { + sr_err("devc->ftdic was NULL."); + return FALSE; + } + + /* Get one block of data. */ + if ((ret = cv_read_block(devc)) < 0) { + sr_err("Failed to read data block: %d.", ret); + dev_acquisition_stop(sdi, sdi); + return FALSE; + } + + /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ + if (devc->block_counter != (NUM_BLOCKS - 1)) { + devc->block_counter++; + return TRUE; + } + + sr_dbg("Sampling finished, sending data to session bus now."); + + /* All data was received and demangled, send it to the session bus. */ + for (i = 0; i < NUM_BLOCKS; i++) + cv_send_block_to_session_bus(devc, i); + + dev_acquisition_stop(sdi, sdi); + + return TRUE; +} + +static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) +{ + struct dev_context *devc; + uint8_t buf[8]; + int bytes_to_write, bytes_written; + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR_DEV_CLOSED; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + if (!devc->ftdic) { + sr_err("devc->ftdic was NULL."); + return SR_ERR_BUG; + } + + devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); + if (devc->divcount == 0xff) { + sr_err("Invalid divcount/samplerate."); + return SR_ERR; + } + + if (cv_configure_channels(sdi) != SR_OK) { + sr_err("Failed to configure channels."); + return SR_ERR; + } + + /* Fill acquisition parameters into buf[]. */ + if (devc->prof->model == CHRONOVU_LA8) { + buf[0] = devc->divcount; + buf[1] = 0xff; /* This byte must always be 0xff. */ + buf[2] = devc->trigger_pattern & 0xff; + buf[3] = devc->trigger_mask & 0xff; + bytes_to_write = 4; + } else { + buf[0] = devc->divcount; + buf[1] = 0xff; /* This byte must always be 0xff. */ + buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ + buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ + buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ + buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ + buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ + buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ + bytes_to_write = 8; + } + + /* Start acquisition. */ + bytes_written = cv_write(devc, buf, bytes_to_write); + + if (bytes_written < 0 || bytes_written != bytes_to_write) { + sr_err("Acquisition failed to start."); + return SR_ERR; + } + + sr_dbg("Hardware acquisition started successfully."); + + devc->cb_data = cb_data; + + /* Send header packet to the session bus. */ + std_session_send_df_header(cb_data, LOG_PREFIX); + + /* Time when we should be done (for detecting trigger timeouts). */ + devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + + g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); + devc->block_counter = 0; + devc->trigger_found = 0; + + /* Hook up a dummy handler to receive data from the device. */ + sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); + + return SR_OK; +} + +static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) +{ + struct sr_datafeed_packet packet; + + (void)sdi; + + sr_dbg("Stopping acquisition."); + sr_source_remove(-1); + + /* Send end packet to the session bus. */ + sr_dbg("Sending SR_DF_END."); + packet.type = SR_DF_END; + sr_session_send(cb_data, &packet); + + return SR_OK; +} + +SR_PRIV struct sr_dev_driver chronovu_la_driver_info = { + .name = "chronovu-la", + .longname = "ChronoVu LA8/LA16", + .api_version = 1, + .init = init, + .cleanup = cleanup, + .scan = scan, + .dev_list = dev_list, + .dev_clear = dev_clear, + .config_get = config_get, + .config_set = config_set, + .config_list = config_list, + .dev_open = dev_open, + .dev_close = dev_close, + .dev_acquisition_start = dev_acquisition_start, + .dev_acquisition_stop = dev_acquisition_stop, + .priv = NULL, +}; diff --git a/hardware/chronovu-la/protocol.c b/hardware/chronovu-la/protocol.c new file mode 100644 index 00000000..28ac15be --- /dev/null +++ b/hardware/chronovu-la/protocol.c @@ -0,0 +1,511 @@ +/* + * This file is part of the libsigrok project. + * + * Copyright (C) 2011-2014 Uwe Hermann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "protocol.h" + +SR_PRIV const struct cv_profile cv_profiles[] = { + { CHRONOVU_LA8, "LA8", "ChronoVu LA8", 8, SR_MHZ(100), "01", + 0.8388608 }, + { CHRONOVU_LA16, "LA16", "ChronoVu LA16", 16, SR_MHZ(200), "01rf", + 0.042 }, + { 0, NULL, NULL, 0, 0, NULL, 0.0 }, +}; + +/* LA8: channels are numbered 0-7. LA16: channels are numbered 0-15. */ +SR_PRIV const char *cv_channel_names[] = { + "0", "1", "2", "3", "4", "5", "6", "7", + "8", "9", "10", "11", "12", "13", "14", "15", +}; + +static int close_usb_reset_sequencer(struct dev_context *devc); + +SR_PRIV void cv_fill_samplerates_if_needed(const struct sr_dev_inst *sdi) +{ + int i; + struct dev_context *devc; + + devc = sdi->priv; + + if (devc->samplerates[0] != 0) + return; + + for (i = 0; i < 255; i++) + devc->samplerates[254 - i] = devc->prof->max_samplerate / (i + 1); +} + +/** + * Check if the given samplerate is supported by the hardware. + * + * @param sdi Device instance. + * @param samplerate The samplerate (in Hz) to check. + * + * @return 1 if the samplerate is supported/valid, 0 otherwise. + */ +static int is_valid_samplerate(const struct sr_dev_inst *sdi, + uint64_t samplerate) +{ + int i; + struct dev_context *devc; + + devc = sdi->priv; + + cv_fill_samplerates_if_needed(sdi); + + for (i = 0; i < 255; i++) { + if (devc->samplerates[i] == samplerate) + return 1; + } + + sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate); + + return 0; +} + +/** + * Convert a samplerate (in Hz) to the 'divcount' value the device wants. + * + * The divcount value can be 0x00 - 0xfe (0xff is not valid). + * + * LA8: + * sample period = (divcount + 1) * 10ns. + * divcount = 0x00: 10ns period, 100MHz samplerate. + * divcount = 0xfe: 2550ns period, 392.15kHz samplerate. + * + * LA16: + * sample period = (divcount + 1) * 5ns. + * divcount = 0x00: 5ns period, 200MHz samplerate. + * divcount = 0xfe: 1275ns period, ~784.31kHz samplerate. + * + * @param sdi Device instance. + * @param samplerate The samplerate in Hz. + * + * @return The divcount value as needed by the hardware, or 0xff upon errors. + */ +SR_PRIV uint8_t cv_samplerate_to_divcount(const struct sr_dev_inst *sdi, + uint64_t samplerate) +{ + struct dev_context *devc; + + devc = sdi->priv; + + if (samplerate == 0) { + sr_err("Can't convert invalid samplerate of 0 Hz."); + return 0xff; + } + + if (!is_valid_samplerate(sdi, samplerate)) { + sr_err("Can't get divcount, samplerate invalid."); + return 0xff; + } + + return (devc->prof->max_samplerate / samplerate) - 1; +} + +/** + * Write data of a certain length to the FTDI device. + * + * @param devc The struct containing private per-device-instance data. Must not + * be NULL. devc->ftdic must not be NULL either. + * @param buf The buffer containing the data to write. Must not be NULL. + * @param size The number of bytes to write. Must be > 0. + * + * @return The number of bytes written, or a negative value upon errors. + */ +SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size) +{ + int bytes_written; + + /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ + + bytes_written = ftdi_write_data(devc->ftdic, buf, size); + + if (bytes_written < 0) { + sr_err("Failed to write data (%d): %s.", + bytes_written, ftdi_get_error_string(devc->ftdic)); + (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ + } else if (bytes_written != size) { + sr_err("Failed to write data, only %d/%d bytes written.", + size, bytes_written); + (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ + } + + return bytes_written; +} + +/** + * Read a certain amount of bytes from the FTDI device. + * + * @param devc The struct containing private per-device-instance data. Must not + * be NULL. devc->ftdic must not be NULL either. + * @param buf The buffer where the received data will be stored. Must not + * be NULL. + * @param size The number of bytes to read. Must be >= 1. + * + * @return The number of bytes read, or a negative value upon errors. + */ +static int cv_read(struct dev_context *devc, uint8_t *buf, int size) +{ + int bytes_read; + + /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ + + bytes_read = ftdi_read_data(devc->ftdic, buf, size); + + if (bytes_read < 0) { + sr_err("Failed to read data (%d): %s.", + bytes_read, ftdi_get_error_string(devc->ftdic)); + } else if (bytes_read != size) { + // sr_err("Failed to read data, only %d/%d bytes read.", + // bytes_read, size); + } + + return bytes_read; +} + +/** + * Close the USB port and reset the sequencer logic. + * + * @param devc The struct containing private per-device-instance data. + * + * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. + */ +static int close_usb_reset_sequencer(struct dev_context *devc) +{ + /* Magic sequence of bytes for resetting the sequencer logic. */ + uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; + int ret; + + /* Note: Caller checked that devc and devc->ftdic != NULL. */ + + if (devc->ftdic->usb_dev) { + /* Reset the sequencer logic, then wait 100ms. */ + sr_dbg("Resetting sequencer logic."); + (void) cv_write(devc, buf, 8); /* Ignore errors. */ + g_usleep(100 * 1000); + + /* Purge FTDI buffers, then reset and close the FTDI device. */ + sr_dbg("Purging buffers, resetting+closing FTDI device."); + + /* Log errors, but ignore them (i.e., don't abort). */ + if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) + sr_err("Failed to purge FTDI buffers (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + if ((ret = ftdi_usb_reset(devc->ftdic)) < 0) + sr_err("Failed to reset FTDI device (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + if ((ret = ftdi_usb_close(devc->ftdic)) < 0) + sr_err("Failed to close FTDI device (%d): %s.", + ret, ftdi_get_error_string(devc->ftdic)); + } + + /* Close USB device, deinitialize and free the FTDI context. */ + ftdi_free(devc->ftdic); + devc->ftdic = NULL; + + return SR_OK; +} + +/** + * Reset the ChronoVu device. + * + * A reset is required after a failed read/write operation or upon timeouts. + * + * @param devc The struct containing private per-device-instance data. + * + * @return SR_OK upon success, SR_ERR upon failure. + */ +static int reset_device(struct dev_context *devc) +{ + uint8_t buf[BS]; + gint64 done, now; + int bytes_read; + + /* Note: Caller checked that devc and devc->ftdic != NULL. */ + + sr_dbg("Resetting the device."); + + /* + * Purge pending read data from the FTDI hardware FIFO until + * no more data is left, or a timeout occurs (after 20s). + */ + done = (20 * G_TIME_SPAN_SECOND) + g_get_monotonic_time(); + do { + /* Try to read bytes until none are left (or errors occur). */ + bytes_read = cv_read(devc, (uint8_t *)&buf, BS); + now = g_get_monotonic_time(); + } while ((done > now) && (bytes_read > 0)); + + /* Reset the sequencer logic and close the USB port. */ + (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ + + sr_dbg("Device reset finished."); + + return SR_OK; +} + +SR_PRIV int cv_configure_channels(const struct sr_dev_inst *sdi) +{ + struct dev_context *devc; + const struct sr_channel *ch; + const GSList *l; + uint16_t channel_bit; + char *tc; + + devc = sdi->priv; + devc->trigger_pattern = 0x0000; /* Default to "low" trigger. */ + devc->trigger_mask = 0x0000; /* Default to "don't care". */ + devc->trigger_edgemask = 0x0000; /* Default to "state triggered". */ + + for (l = sdi->channels; l; l = l->next) { + ch = (struct sr_channel *)l->data; + + if (!ch) { + sr_err("%s: channel was NULL.", __func__); + return SR_ERR; + } + + /* Skip disabled channels. */ + if (!ch->enabled) + continue; + + /* Skip (enabled) channels with no configured trigger. */ + if (!ch->trigger) + continue; + + /* Note: Must only be run if ch->trigger != NULL. */ + if (ch->index < 0 || ch->index > (int)devc->prof->num_channels - 1) { + sr_err("Invalid channel index %d, must be " + "between 0 and %d.", ch->index, + devc->prof->num_channels - 1); + return SR_ERR; + } + + channel_bit = (1 << (ch->index)); + + /* Configure the channel's trigger pattern/mask/edgemask. */ + for (tc = ch->trigger; tc && *tc; tc++) { + devc->trigger_mask |= channel_bit; + + /* Sanity check, LA8 only supports low/high trigger. */ + if ((devc->prof->model == CHRONOVU_LA8) && + (*tc != '0' && *tc != '1')) { + sr_err("Invalid trigger '%c', only " + "'0'/'1' supported.", *tc); + return SR_ERR; + } + + /* state: 1 == high, edge: 1 == rising edge. */ + if (*tc == '1' || *tc == 'r') + devc->trigger_pattern |= channel_bit; + + /* LA16 (but not LA8) supports edge triggering. */ + if ((devc->prof->model == CHRONOVU_LA16)) { + if (*tc == 'r' || *tc == 'f') + devc->trigger_edgemask |= channel_bit; + } + + } + } + + sr_dbg("Trigger pattern/mask/edgemask = 0x%04x / 0x%04x / 0x%04x.", + devc->trigger_pattern, devc->trigger_mask, + devc->trigger_edgemask); + + return SR_OK; +} + +SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) +{ + struct dev_context *devc; + + /* Note: Caller checked that sdi and sdi->priv != NULL. */ + + devc = sdi->priv; + + sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate); + + cv_fill_samplerates_if_needed(sdi); + + /* Check if this is a samplerate supported by the hardware. */ + if (!is_valid_samplerate(sdi, samplerate)) { + sr_dbg("Failed to set invalid samplerate (%" PRIu64 "Hz).", + samplerate); + return SR_ERR; + } + + devc->cur_samplerate = samplerate; + + sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate); + + return SR_OK; +} + +/** + * Get a block of data from the device. + * + * @param devc The struct containing private per-device-instance data. Must not + * be NULL. devc->ftdic must not be NULL either. + * + * @return SR_OK upon success, or SR_ERR upon errors. + */ +SR_PRIV int cv_read_block(struct dev_context *devc) +{ + int i, byte_offset, m, mi, p, q, index, bytes_read; + gint64 now; + + /* Note: Caller checked that devc and devc->ftdic != NULL. */ + + sr_spew("Reading block %d.", devc->block_counter); + + bytes_read = cv_read(devc, devc->mangled_buf, BS); + + /* If first block read got 0 bytes, retry until success or timeout. */ + if ((bytes_read == 0) && (devc->block_counter == 0)) { + do { + sr_spew("Reading block 0 (again)."); + /* Note: If bytes_read < 0 cv_read() will log errors. */ + bytes_read = cv_read(devc, devc->mangled_buf, BS); + now = g_get_monotonic_time(); + } while ((devc->done > now) && (bytes_read == 0)); + } + + /* Check if block read was successful or a timeout occured. */ + if (bytes_read != BS) { + sr_err("Trigger timed out. Bytes read: %d.", bytes_read); + (void) reset_device(devc); /* Ignore errors. */ + return SR_ERR; + } + + /* De-mangle the data. */ + sr_spew("Demangling block %d.", devc->block_counter); + byte_offset = devc->block_counter * BS; + m = byte_offset / (1024 * 1024); + mi = m * (1024 * 1024); + for (i = 0; i < BS; i++) { + if (devc->prof->model == CHRONOVU_LA8) { + p = i & (1 << 0); + index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; + index += (devc->divcount == 0) ? p : (1 - p); + } else { + p = i & (1 << 0); + q = i & (1 << 1); + index = m * 4 + (((byte_offset + i) - mi) / 4) * 32; + index += q + (1 - p); + } + devc->final_buf[index] = devc->mangled_buf[i]; + } + + return SR_OK; +} + +SR_PRIV void cv_send_block_to_session_bus(struct dev_context *devc, int block) +{ + int i; + uint8_t sample, expected_sample; + struct sr_datafeed_packet packet; + struct sr_datafeed_logic logic; + int trigger_point; /* Relative trigger point (in this block). */ + + /* Note: Caller ensures devc/devc->ftdic != NULL and block > 0. */ + + /* TODO: Implement/test proper trigger support for the LA16. */ + + /* Check if we can find the trigger condition in this block. */ + trigger_point = -1; + expected_sample = devc->trigger_pattern & devc->trigger_mask; + for (i = 0; i < BS; i++) { + /* Don't continue if the trigger was found previously. */ + if (devc->trigger_found) + break; + + /* + * Also, don't continue if triggers are "don't care", i.e. if + * no trigger conditions were specified by the user. In that + * case we don't want to send an SR_DF_TRIGGER packet at all. + */ + if (devc->trigger_mask == 0x0000) + break; + + sample = *(devc->final_buf + (block * BS) + i); + + if ((sample & devc->trigger_mask) == expected_sample) { + trigger_point = i; + devc->trigger_found = 1; + break; + } + } + + /* If no trigger was found, send one SR_DF_LOGIC packet. */ + if (trigger_point == -1) { + /* Send an SR_DF_LOGIC packet to the session bus. */ + sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for " + "block %d.", BS, block); + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.length = BS; + logic.unitsize = devc->prof->num_channels / 8; + logic.data = devc->final_buf + (block * BS); + sr_session_send(devc->cb_data, &packet); + return; + } + + /* + * We found the trigger, so some special handling is needed. We have + * to send an SR_DF_LOGIC packet with the samples before the trigger + * (if any), then the SD_DF_TRIGGER packet itself, then another + * SR_DF_LOGIC packet with the samples after the trigger (if any). + */ + + /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ + + /* If at least one sample is located before the trigger... */ + if (trigger_point > 0) { + /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ + sr_spew("Sending pre-trigger SR_DF_LOGIC packet, " + "start = %d, length = %d.", block * BS, trigger_point); + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.length = trigger_point; + logic.unitsize = devc->prof->num_channels / 8; + logic.data = devc->final_buf + (block * BS); + sr_session_send(devc->cb_data, &packet); + } + + /* Send the SR_DF_TRIGGER packet to the session bus. */ + sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.", + (block * BS) + trigger_point); + packet.type = SR_DF_TRIGGER; + packet.payload = NULL; + sr_session_send(devc->cb_data, &packet); + + /* If at least one sample is located after the trigger... */ + if (trigger_point < (BS - 1)) { + /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ + sr_spew("Sending post-trigger SR_DF_LOGIC packet, " + "start = %d, length = %d.", + (block * BS) + trigger_point, BS - trigger_point); + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.length = BS - trigger_point; + logic.unitsize = devc->prof->num_channels / 8; + logic.data = devc->final_buf + (block * BS) + trigger_point; + sr_session_send(devc->cb_data, &packet); + } +} diff --git a/hardware/chronovu-la/protocol.h b/hardware/chronovu-la/protocol.h new file mode 100644 index 00000000..6941661c --- /dev/null +++ b/hardware/chronovu-la/protocol.h @@ -0,0 +1,141 @@ +/* + * This file is part of the libsigrok project. + * + * Copyright (C) 2011-2014 Uwe Hermann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA_PROTOCOL_H +#define LIBSIGROK_HARDWARE_CHRONOVU_LA_PROTOCOL_H + +#include +#include +#include +#include +#include "libsigrok.h" +#include "libsigrok-internal.h" + +#define LOG_PREFIX "la8/la16" + +#define SDRAM_SIZE (8 * 1024 * 1024) +#define MAX_NUM_SAMPLES SDRAM_SIZE + +#define BS 4096 /* Block size */ +#define NUM_BLOCKS 2048 /* Number of blocks */ + +enum { + CHRONOVU_LA8, + CHRONOVU_LA16, +}; + +struct cv_profile { + int model; + const char *modelname; + const char *iproduct; /* USB iProduct string */ + unsigned int num_channels; + uint64_t max_samplerate; + const char *trigger_type; + float trigger_constant; +}; + +/* Private, per-device-instance driver context. */ +struct dev_context { + /** Device profile struct for this device. */ + const struct cv_profile *prof; + + /** FTDI device context (used by libftdi). */ + struct ftdi_context *ftdic; + + /** The currently configured samplerate of the device. */ + uint64_t cur_samplerate; + + /** The current sampling limit (in ms). */ + uint64_t limit_msec; + + /** The current sampling limit (in number of samples). */ + uint64_t limit_samples; + + void *cb_data; + + /** + * A buffer containing some (mangled) samples from the device. + * Format: Pretty mangled-up (due to hardware reasons), see code. + */ + uint8_t mangled_buf[BS]; + + /** + * An 8MB buffer where we'll store the de-mangled samples. + * LA8: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. + * LA16: Each sample is 2 bytes, MSB is channel 15, LSB is channel 0. + */ + uint8_t *final_buf; + + /** + * Trigger pattern. + * A 1 bit matches a high signal, 0 matches a low signal on a channel. + * + * If the resp. 'trigger_edgemask' bit is set, 1 means "rising edge", + * and 0 means "falling edge". + */ + uint16_t trigger_pattern; + + /** + * Trigger mask. + * A 1 bit means "must match trigger_pattern", 0 means "don't care". + */ + uint16_t trigger_mask; + + /** + * Trigger edge mask. + * A 1 bit means "edge triggered", 0 means "state triggered". + * + * Edge triggering is only supported on LA16 (but not LA8). + */ + uint16_t trigger_edgemask; + + /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ + int trigger_found; + + /** Used for keeping track how much time has passed. */ + gint64 done; + + /** Counter/index for the data block to be read. */ + int block_counter; + + /** The divcount value (determines the sample period). */ + uint8_t divcount; + + /** This ChronoVu device's USB VID/PID. */ + uint16_t usb_vid; + uint16_t usb_pid; + + /** Samplerates supported by this device. */ + uint64_t samplerates[255]; +}; + +/* protocol.c */ +extern SR_PRIV const char *cv_channel_names[]; +extern const struct cv_profile cv_profiles[]; +SR_PRIV void cv_fill_samplerates_if_needed(const struct sr_dev_inst *sdi); +SR_PRIV uint8_t cv_samplerate_to_divcount(const struct sr_dev_inst *sdi, + uint64_t samplerate); +SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size); +SR_PRIV int cv_configure_channels(const struct sr_dev_inst *sdi); +SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate); +SR_PRIV int cv_read_block(struct dev_context *devc); +SR_PRIV void cv_send_block_to_session_bus(struct dev_context *devc, int block); + +#endif diff --git a/hardware/chronovu-la8/api.c b/hardware/chronovu-la8/api.c deleted file mode 100644 index 685e1a46..00000000 --- a/hardware/chronovu-la8/api.c +++ /dev/null @@ -1,532 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2011-2014 Uwe Hermann - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "protocol.h" - -SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; -static struct sr_dev_driver *di = &chronovu_la8_driver_info; - -static const int32_t hwcaps[] = { - SR_CONF_LOGIC_ANALYZER, - SR_CONF_SAMPLERATE, - SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */ - SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ -}; - -/* The ChronoVu LA8/LA16 can have multiple VID/PID pairs. */ -static struct { - uint16_t vid; - uint16_t pid; - int model; - const char *iproduct; -} vid_pid[] = { - { 0x0403, 0x6001, CHRONOVU_LA8, "ChronoVu LA8" }, - { 0x0403, 0x8867, CHRONOVU_LA8, "ChronoVu LA8" }, - { 0x0403, 0x6001, CHRONOVU_LA16, "ChronoVu LA16" }, - { 0x0403, 0x8867, CHRONOVU_LA16, "ChronoVu LA16" }, -}; - -static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); - -static void clear_helper(void *priv) -{ - struct dev_context *devc; - - devc = priv; - - ftdi_free(devc->ftdic); - g_free(devc->final_buf); -} - -static int dev_clear(void) -{ - return std_dev_clear(di, clear_helper); -} - -static int init(struct sr_context *sr_ctx) -{ - return std_init(sr_ctx, di, LOG_PREFIX); -} - -static int add_device(int idx, int model, GSList **devices) -{ - int ret; - unsigned int i; - struct sr_dev_inst *sdi; - struct drv_context *drvc; - struct dev_context *devc; - struct sr_channel *ch; - - ret = SR_OK; - - drvc = di->priv; - - /* Allocate memory for our private device context. */ - devc = g_try_malloc(sizeof(struct dev_context)); - - /* Set some sane defaults. */ - devc->prof = &cv_profiles[model]; - devc->ftdic = NULL; /* Will be set in the open() API call. */ - devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ - devc->limit_msec = 0; - devc->limit_samples = 0; - devc->cb_data = NULL; - memset(devc->mangled_buf, 0, BS); - devc->final_buf = NULL; - devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ - devc->trigger_mask = 0x0000; /* All channels: "don't care". */ - devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ - devc->trigger_found = 0; - devc->done = 0; - devc->block_counter = 0; - devc->divcount = 0; - devc->usb_vid = vid_pid[idx].vid; - devc->usb_pid = vid_pid[idx].pid; - memset(devc->samplerates, 0, sizeof(uint64_t) * 255); - - /* Allocate memory where we'll store the de-mangled data. */ - if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { - sr_err("Failed to allocate memory for sample buffer."); - ret = SR_ERR_MALLOC; - goto err_free_devc; - } - - /* We now know the device, set its max. samplerate as default. */ - devc->cur_samplerate = devc->prof->max_samplerate; - - /* Register the device with libsigrok. */ - sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, - "ChronoVu", devc->prof->modelname, NULL); - if (!sdi) { - sr_err("Failed to create device instance."); - ret = SR_ERR; - goto err_free_final_buf; - } - sdi->driver = di; - sdi->priv = devc; - - for (i = 0; i < devc->prof->num_channels; i++) { - if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, - cv_channel_names[i]))) { - ret = SR_ERR; - goto err_free_dev_inst; - } - sdi->channels = g_slist_append(sdi->channels, ch); - } - - *devices = g_slist_append(*devices, sdi); - drvc->instances = g_slist_append(drvc->instances, sdi); - - return SR_OK; - -err_free_dev_inst: - sr_dev_inst_free(sdi); -err_free_final_buf: - g_free(devc->final_buf); -err_free_devc: - g_free(devc); - - return ret; -} - -static GSList *scan(GSList *options) -{ - int ret; - unsigned int i; - GSList *devices; - struct ftdi_context *ftdic; - - (void)options; - - devices = NULL; - - /* Allocate memory for the FTDI context and initialize it. */ - if (!(ftdic = ftdi_new())) { - sr_err("Failed to initialize libftdi."); - return NULL; - } - - /* Check for LA8 and/or LA16 devices with various VID/PIDs. */ - for (i = 0; i < ARRAY_SIZE(vid_pid); i++) { - ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid, - vid_pid[i].pid, vid_pid[i].iproduct, NULL); - if (ret < 0) - continue; /* No device found. */ - - sr_dbg("Found %s device (%04x:%04x).", - vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid); - - if ((ret = add_device(i, vid_pid[i].model, &devices)) < 0) - sr_dbg("Failed to add device: %d.", ret); - - if ((ret = ftdi_usb_close(ftdic)) < 0) - sr_dbg("Failed to close FTDI device (%d): %s.", - ret, ftdi_get_error_string(ftdic)); - } - - /* Close USB device, deinitialize and free the FTDI context. */ - ftdi_free(ftdic); - ftdic = NULL; - - return devices; -} - -static GSList *dev_list(void) -{ - return ((struct drv_context *)(di->priv))->instances; -} - -static int dev_open(struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - int ret; - - ret = SR_ERR; - - if (!(devc = sdi->priv)) - return SR_ERR_BUG; - - /* Allocate memory for the FTDI context and initialize it. */ - if (!(devc->ftdic = ftdi_new())) { - sr_err("Failed to initialize libftdi."); - return SR_ERR; - } - - sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, - devc->usb_vid, devc->usb_pid); - - /* Open the device. */ - if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, - devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { - sr_err("Failed to open FTDI device (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - goto err_ftdi_free; - } - sr_dbg("Device opened successfully."); - - /* Purge RX/TX buffers in the FTDI chip. */ - if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { - sr_err("Failed to purge FTDI buffers (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - goto err_ftdi_free; - } - sr_dbg("FTDI buffers purged successfully."); - - /* Enable flow control in the FTDI chip. */ - if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { - sr_err("Failed to enable FTDI flow control (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - goto err_ftdi_free; - } - sr_dbg("FTDI flow control enabled successfully."); - - /* Wait 100ms. */ - g_usleep(100 * 1000); - - sdi->status = SR_ST_ACTIVE; - - return SR_OK; - -err_ftdi_free: - ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ - devc->ftdic = NULL; - return ret; -} - -static int dev_close(struct sr_dev_inst *sdi) -{ - int ret; - struct dev_context *devc; - - if (sdi->status != SR_ST_ACTIVE) - return SR_OK; - - devc = sdi->priv; - - if (devc->ftdic && (ret = ftdi_usb_close(devc->ftdic)) < 0) - sr_err("Failed to close FTDI device (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - sdi->status = SR_ST_INACTIVE; - - return SR_OK; -} - -static int cleanup(void) -{ - return dev_clear(); -} - -static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - struct dev_context *devc; - - (void)cg; - - switch (id) { - case SR_CONF_SAMPLERATE: - if (!sdi || !(devc = sdi->priv)) - return SR_ERR_BUG; - *data = g_variant_new_uint64(devc->cur_samplerate); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - struct dev_context *devc; - - (void)cg; - - if (sdi->status != SR_ST_ACTIVE) - return SR_ERR_DEV_CLOSED; - - if (!(devc = sdi->priv)) - return SR_ERR_BUG; - - switch (id) { - case SR_CONF_SAMPLERATE: - if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) - return SR_ERR; - break; - case SR_CONF_LIMIT_MSEC: - if (g_variant_get_uint64(data) == 0) - return SR_ERR_ARG; - devc->limit_msec = g_variant_get_uint64(data); - break; - case SR_CONF_LIMIT_SAMPLES: - if (g_variant_get_uint64(data) == 0) - return SR_ERR_ARG; - devc->limit_samples = g_variant_get_uint64(data); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, - const struct sr_channel_group *cg) -{ - GVariant *gvar, *grange[2]; - GVariantBuilder gvb; - struct dev_context *devc; - - (void)cg; - - switch (key) { - case SR_CONF_DEVICE_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, - hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); - break; - case SR_CONF_SAMPLERATE: - if (!sdi || !sdi->priv || !(devc = sdi->priv)) - return SR_ERR_BUG; - cv_fill_samplerates_if_needed(sdi); - g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); - gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), - devc->samplerates, - ARRAY_SIZE(devc->samplerates), - sizeof(uint64_t)); - g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); - *data = g_variant_builder_end(&gvb); - break; - case SR_CONF_LIMIT_SAMPLES: - grange[0] = g_variant_new_uint64(0); - grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES); - *data = g_variant_new_tuple(grange, 2); - break; - case SR_CONF_TRIGGER_TYPE: - if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) - return SR_ERR_BUG; - *data = g_variant_new_string(devc->prof->trigger_type); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -static int receive_data(int fd, int revents, void *cb_data) -{ - int i, ret; - struct sr_dev_inst *sdi; - struct dev_context *devc; - - (void)fd; - (void)revents; - - if (!(sdi = cb_data)) { - sr_err("cb_data was NULL."); - return FALSE; - } - - if (!(devc = sdi->priv)) { - sr_err("sdi->priv was NULL."); - return FALSE; - } - - if (!devc->ftdic) { - sr_err("devc->ftdic was NULL."); - return FALSE; - } - - /* Get one block of data. */ - if ((ret = cv_read_block(devc)) < 0) { - sr_err("Failed to read data block: %d.", ret); - dev_acquisition_stop(sdi, sdi); - return FALSE; - } - - /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ - if (devc->block_counter != (NUM_BLOCKS - 1)) { - devc->block_counter++; - return TRUE; - } - - sr_dbg("Sampling finished, sending data to session bus now."); - - /* All data was received and demangled, send it to the session bus. */ - for (i = 0; i < NUM_BLOCKS; i++) - cv_send_block_to_session_bus(devc, i); - - dev_acquisition_stop(sdi, sdi); - - return TRUE; -} - -static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) -{ - struct dev_context *devc; - uint8_t buf[8]; - int bytes_to_write, bytes_written; - - if (sdi->status != SR_ST_ACTIVE) - return SR_ERR_DEV_CLOSED; - - if (!(devc = sdi->priv)) { - sr_err("sdi->priv was NULL."); - return SR_ERR_BUG; - } - - if (!devc->ftdic) { - sr_err("devc->ftdic was NULL."); - return SR_ERR_BUG; - } - - devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); - if (devc->divcount == 0xff) { - sr_err("Invalid divcount/samplerate."); - return SR_ERR; - } - - if (cv_configure_channels(sdi) != SR_OK) { - sr_err("Failed to configure channels."); - return SR_ERR; - } - - /* Fill acquisition parameters into buf[]. */ - if (devc->prof->model == CHRONOVU_LA8) { - buf[0] = devc->divcount; - buf[1] = 0xff; /* This byte must always be 0xff. */ - buf[2] = devc->trigger_pattern & 0xff; - buf[3] = devc->trigger_mask & 0xff; - bytes_to_write = 4; - } else { - buf[0] = devc->divcount; - buf[1] = 0xff; /* This byte must always be 0xff. */ - buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ - buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ - buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ - buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ - buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ - buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ - bytes_to_write = 8; - } - - /* Start acquisition. */ - bytes_written = cv_write(devc, buf, bytes_to_write); - - if (bytes_written < 0 || bytes_written != bytes_to_write) { - sr_err("Acquisition failed to start."); - return SR_ERR; - } - - sr_dbg("Hardware acquisition started successfully."); - - devc->cb_data = cb_data; - - /* Send header packet to the session bus. */ - std_session_send_df_header(cb_data, LOG_PREFIX); - - /* Time when we should be done (for detecting trigger timeouts). */ - devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + - g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); - devc->block_counter = 0; - devc->trigger_found = 0; - - /* Hook up a dummy handler to receive data from the device. */ - sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); - - return SR_OK; -} - -static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) -{ - struct sr_datafeed_packet packet; - - (void)sdi; - - sr_dbg("Stopping acquisition."); - sr_source_remove(-1); - - /* Send end packet to the session bus. */ - sr_dbg("Sending SR_DF_END."); - packet.type = SR_DF_END; - sr_session_send(cb_data, &packet); - - return SR_OK; -} - -SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { - .name = "chronovu-la8", - .longname = "ChronoVu LA8", - .api_version = 1, - .init = init, - .cleanup = cleanup, - .scan = scan, - .dev_list = dev_list, - .dev_clear = dev_clear, - .config_get = config_get, - .config_set = config_set, - .config_list = config_list, - .dev_open = dev_open, - .dev_close = dev_close, - .dev_acquisition_start = dev_acquisition_start, - .dev_acquisition_stop = dev_acquisition_stop, - .priv = NULL, -}; diff --git a/hardware/chronovu-la8/protocol.c b/hardware/chronovu-la8/protocol.c deleted file mode 100644 index 28ac15be..00000000 --- a/hardware/chronovu-la8/protocol.c +++ /dev/null @@ -1,511 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2011-2014 Uwe Hermann - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "protocol.h" - -SR_PRIV const struct cv_profile cv_profiles[] = { - { CHRONOVU_LA8, "LA8", "ChronoVu LA8", 8, SR_MHZ(100), "01", - 0.8388608 }, - { CHRONOVU_LA16, "LA16", "ChronoVu LA16", 16, SR_MHZ(200), "01rf", - 0.042 }, - { 0, NULL, NULL, 0, 0, NULL, 0.0 }, -}; - -/* LA8: channels are numbered 0-7. LA16: channels are numbered 0-15. */ -SR_PRIV const char *cv_channel_names[] = { - "0", "1", "2", "3", "4", "5", "6", "7", - "8", "9", "10", "11", "12", "13", "14", "15", -}; - -static int close_usb_reset_sequencer(struct dev_context *devc); - -SR_PRIV void cv_fill_samplerates_if_needed(const struct sr_dev_inst *sdi) -{ - int i; - struct dev_context *devc; - - devc = sdi->priv; - - if (devc->samplerates[0] != 0) - return; - - for (i = 0; i < 255; i++) - devc->samplerates[254 - i] = devc->prof->max_samplerate / (i + 1); -} - -/** - * Check if the given samplerate is supported by the hardware. - * - * @param sdi Device instance. - * @param samplerate The samplerate (in Hz) to check. - * - * @return 1 if the samplerate is supported/valid, 0 otherwise. - */ -static int is_valid_samplerate(const struct sr_dev_inst *sdi, - uint64_t samplerate) -{ - int i; - struct dev_context *devc; - - devc = sdi->priv; - - cv_fill_samplerates_if_needed(sdi); - - for (i = 0; i < 255; i++) { - if (devc->samplerates[i] == samplerate) - return 1; - } - - sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate); - - return 0; -} - -/** - * Convert a samplerate (in Hz) to the 'divcount' value the device wants. - * - * The divcount value can be 0x00 - 0xfe (0xff is not valid). - * - * LA8: - * sample period = (divcount + 1) * 10ns. - * divcount = 0x00: 10ns period, 100MHz samplerate. - * divcount = 0xfe: 2550ns period, 392.15kHz samplerate. - * - * LA16: - * sample period = (divcount + 1) * 5ns. - * divcount = 0x00: 5ns period, 200MHz samplerate. - * divcount = 0xfe: 1275ns period, ~784.31kHz samplerate. - * - * @param sdi Device instance. - * @param samplerate The samplerate in Hz. - * - * @return The divcount value as needed by the hardware, or 0xff upon errors. - */ -SR_PRIV uint8_t cv_samplerate_to_divcount(const struct sr_dev_inst *sdi, - uint64_t samplerate) -{ - struct dev_context *devc; - - devc = sdi->priv; - - if (samplerate == 0) { - sr_err("Can't convert invalid samplerate of 0 Hz."); - return 0xff; - } - - if (!is_valid_samplerate(sdi, samplerate)) { - sr_err("Can't get divcount, samplerate invalid."); - return 0xff; - } - - return (devc->prof->max_samplerate / samplerate) - 1; -} - -/** - * Write data of a certain length to the FTDI device. - * - * @param devc The struct containing private per-device-instance data. Must not - * be NULL. devc->ftdic must not be NULL either. - * @param buf The buffer containing the data to write. Must not be NULL. - * @param size The number of bytes to write. Must be > 0. - * - * @return The number of bytes written, or a negative value upon errors. - */ -SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size) -{ - int bytes_written; - - /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ - - bytes_written = ftdi_write_data(devc->ftdic, buf, size); - - if (bytes_written < 0) { - sr_err("Failed to write data (%d): %s.", - bytes_written, ftdi_get_error_string(devc->ftdic)); - (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ - } else if (bytes_written != size) { - sr_err("Failed to write data, only %d/%d bytes written.", - size, bytes_written); - (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ - } - - return bytes_written; -} - -/** - * Read a certain amount of bytes from the FTDI device. - * - * @param devc The struct containing private per-device-instance data. Must not - * be NULL. devc->ftdic must not be NULL either. - * @param buf The buffer where the received data will be stored. Must not - * be NULL. - * @param size The number of bytes to read. Must be >= 1. - * - * @return The number of bytes read, or a negative value upon errors. - */ -static int cv_read(struct dev_context *devc, uint8_t *buf, int size) -{ - int bytes_read; - - /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ - - bytes_read = ftdi_read_data(devc->ftdic, buf, size); - - if (bytes_read < 0) { - sr_err("Failed to read data (%d): %s.", - bytes_read, ftdi_get_error_string(devc->ftdic)); - } else if (bytes_read != size) { - // sr_err("Failed to read data, only %d/%d bytes read.", - // bytes_read, size); - } - - return bytes_read; -} - -/** - * Close the USB port and reset the sequencer logic. - * - * @param devc The struct containing private per-device-instance data. - * - * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. - */ -static int close_usb_reset_sequencer(struct dev_context *devc) -{ - /* Magic sequence of bytes for resetting the sequencer logic. */ - uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; - int ret; - - /* Note: Caller checked that devc and devc->ftdic != NULL. */ - - if (devc->ftdic->usb_dev) { - /* Reset the sequencer logic, then wait 100ms. */ - sr_dbg("Resetting sequencer logic."); - (void) cv_write(devc, buf, 8); /* Ignore errors. */ - g_usleep(100 * 1000); - - /* Purge FTDI buffers, then reset and close the FTDI device. */ - sr_dbg("Purging buffers, resetting+closing FTDI device."); - - /* Log errors, but ignore them (i.e., don't abort). */ - if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) - sr_err("Failed to purge FTDI buffers (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - if ((ret = ftdi_usb_reset(devc->ftdic)) < 0) - sr_err("Failed to reset FTDI device (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - if ((ret = ftdi_usb_close(devc->ftdic)) < 0) - sr_err("Failed to close FTDI device (%d): %s.", - ret, ftdi_get_error_string(devc->ftdic)); - } - - /* Close USB device, deinitialize and free the FTDI context. */ - ftdi_free(devc->ftdic); - devc->ftdic = NULL; - - return SR_OK; -} - -/** - * Reset the ChronoVu device. - * - * A reset is required after a failed read/write operation or upon timeouts. - * - * @param devc The struct containing private per-device-instance data. - * - * @return SR_OK upon success, SR_ERR upon failure. - */ -static int reset_device(struct dev_context *devc) -{ - uint8_t buf[BS]; - gint64 done, now; - int bytes_read; - - /* Note: Caller checked that devc and devc->ftdic != NULL. */ - - sr_dbg("Resetting the device."); - - /* - * Purge pending read data from the FTDI hardware FIFO until - * no more data is left, or a timeout occurs (after 20s). - */ - done = (20 * G_TIME_SPAN_SECOND) + g_get_monotonic_time(); - do { - /* Try to read bytes until none are left (or errors occur). */ - bytes_read = cv_read(devc, (uint8_t *)&buf, BS); - now = g_get_monotonic_time(); - } while ((done > now) && (bytes_read > 0)); - - /* Reset the sequencer logic and close the USB port. */ - (void) close_usb_reset_sequencer(devc); /* Ignore errors. */ - - sr_dbg("Device reset finished."); - - return SR_OK; -} - -SR_PRIV int cv_configure_channels(const struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - const struct sr_channel *ch; - const GSList *l; - uint16_t channel_bit; - char *tc; - - devc = sdi->priv; - devc->trigger_pattern = 0x0000; /* Default to "low" trigger. */ - devc->trigger_mask = 0x0000; /* Default to "don't care". */ - devc->trigger_edgemask = 0x0000; /* Default to "state triggered". */ - - for (l = sdi->channels; l; l = l->next) { - ch = (struct sr_channel *)l->data; - - if (!ch) { - sr_err("%s: channel was NULL.", __func__); - return SR_ERR; - } - - /* Skip disabled channels. */ - if (!ch->enabled) - continue; - - /* Skip (enabled) channels with no configured trigger. */ - if (!ch->trigger) - continue; - - /* Note: Must only be run if ch->trigger != NULL. */ - if (ch->index < 0 || ch->index > (int)devc->prof->num_channels - 1) { - sr_err("Invalid channel index %d, must be " - "between 0 and %d.", ch->index, - devc->prof->num_channels - 1); - return SR_ERR; - } - - channel_bit = (1 << (ch->index)); - - /* Configure the channel's trigger pattern/mask/edgemask. */ - for (tc = ch->trigger; tc && *tc; tc++) { - devc->trigger_mask |= channel_bit; - - /* Sanity check, LA8 only supports low/high trigger. */ - if ((devc->prof->model == CHRONOVU_LA8) && - (*tc != '0' && *tc != '1')) { - sr_err("Invalid trigger '%c', only " - "'0'/'1' supported.", *tc); - return SR_ERR; - } - - /* state: 1 == high, edge: 1 == rising edge. */ - if (*tc == '1' || *tc == 'r') - devc->trigger_pattern |= channel_bit; - - /* LA16 (but not LA8) supports edge triggering. */ - if ((devc->prof->model == CHRONOVU_LA16)) { - if (*tc == 'r' || *tc == 'f') - devc->trigger_edgemask |= channel_bit; - } - - } - } - - sr_dbg("Trigger pattern/mask/edgemask = 0x%04x / 0x%04x / 0x%04x.", - devc->trigger_pattern, devc->trigger_mask, - devc->trigger_edgemask); - - return SR_OK; -} - -SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) -{ - struct dev_context *devc; - - /* Note: Caller checked that sdi and sdi->priv != NULL. */ - - devc = sdi->priv; - - sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate); - - cv_fill_samplerates_if_needed(sdi); - - /* Check if this is a samplerate supported by the hardware. */ - if (!is_valid_samplerate(sdi, samplerate)) { - sr_dbg("Failed to set invalid samplerate (%" PRIu64 "Hz).", - samplerate); - return SR_ERR; - } - - devc->cur_samplerate = samplerate; - - sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate); - - return SR_OK; -} - -/** - * Get a block of data from the device. - * - * @param devc The struct containing private per-device-instance data. Must not - * be NULL. devc->ftdic must not be NULL either. - * - * @return SR_OK upon success, or SR_ERR upon errors. - */ -SR_PRIV int cv_read_block(struct dev_context *devc) -{ - int i, byte_offset, m, mi, p, q, index, bytes_read; - gint64 now; - - /* Note: Caller checked that devc and devc->ftdic != NULL. */ - - sr_spew("Reading block %d.", devc->block_counter); - - bytes_read = cv_read(devc, devc->mangled_buf, BS); - - /* If first block read got 0 bytes, retry until success or timeout. */ - if ((bytes_read == 0) && (devc->block_counter == 0)) { - do { - sr_spew("Reading block 0 (again)."); - /* Note: If bytes_read < 0 cv_read() will log errors. */ - bytes_read = cv_read(devc, devc->mangled_buf, BS); - now = g_get_monotonic_time(); - } while ((devc->done > now) && (bytes_read == 0)); - } - - /* Check if block read was successful or a timeout occured. */ - if (bytes_read != BS) { - sr_err("Trigger timed out. Bytes read: %d.", bytes_read); - (void) reset_device(devc); /* Ignore errors. */ - return SR_ERR; - } - - /* De-mangle the data. */ - sr_spew("Demangling block %d.", devc->block_counter); - byte_offset = devc->block_counter * BS; - m = byte_offset / (1024 * 1024); - mi = m * (1024 * 1024); - for (i = 0; i < BS; i++) { - if (devc->prof->model == CHRONOVU_LA8) { - p = i & (1 << 0); - index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; - index += (devc->divcount == 0) ? p : (1 - p); - } else { - p = i & (1 << 0); - q = i & (1 << 1); - index = m * 4 + (((byte_offset + i) - mi) / 4) * 32; - index += q + (1 - p); - } - devc->final_buf[index] = devc->mangled_buf[i]; - } - - return SR_OK; -} - -SR_PRIV void cv_send_block_to_session_bus(struct dev_context *devc, int block) -{ - int i; - uint8_t sample, expected_sample; - struct sr_datafeed_packet packet; - struct sr_datafeed_logic logic; - int trigger_point; /* Relative trigger point (in this block). */ - - /* Note: Caller ensures devc/devc->ftdic != NULL and block > 0. */ - - /* TODO: Implement/test proper trigger support for the LA16. */ - - /* Check if we can find the trigger condition in this block. */ - trigger_point = -1; - expected_sample = devc->trigger_pattern & devc->trigger_mask; - for (i = 0; i < BS; i++) { - /* Don't continue if the trigger was found previously. */ - if (devc->trigger_found) - break; - - /* - * Also, don't continue if triggers are "don't care", i.e. if - * no trigger conditions were specified by the user. In that - * case we don't want to send an SR_DF_TRIGGER packet at all. - */ - if (devc->trigger_mask == 0x0000) - break; - - sample = *(devc->final_buf + (block * BS) + i); - - if ((sample & devc->trigger_mask) == expected_sample) { - trigger_point = i; - devc->trigger_found = 1; - break; - } - } - - /* If no trigger was found, send one SR_DF_LOGIC packet. */ - if (trigger_point == -1) { - /* Send an SR_DF_LOGIC packet to the session bus. */ - sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for " - "block %d.", BS, block); - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = BS; - logic.unitsize = devc->prof->num_channels / 8; - logic.data = devc->final_buf + (block * BS); - sr_session_send(devc->cb_data, &packet); - return; - } - - /* - * We found the trigger, so some special handling is needed. We have - * to send an SR_DF_LOGIC packet with the samples before the trigger - * (if any), then the SD_DF_TRIGGER packet itself, then another - * SR_DF_LOGIC packet with the samples after the trigger (if any). - */ - - /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ - - /* If at least one sample is located before the trigger... */ - if (trigger_point > 0) { - /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ - sr_spew("Sending pre-trigger SR_DF_LOGIC packet, " - "start = %d, length = %d.", block * BS, trigger_point); - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = trigger_point; - logic.unitsize = devc->prof->num_channels / 8; - logic.data = devc->final_buf + (block * BS); - sr_session_send(devc->cb_data, &packet); - } - - /* Send the SR_DF_TRIGGER packet to the session bus. */ - sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.", - (block * BS) + trigger_point); - packet.type = SR_DF_TRIGGER; - packet.payload = NULL; - sr_session_send(devc->cb_data, &packet); - - /* If at least one sample is located after the trigger... */ - if (trigger_point < (BS - 1)) { - /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ - sr_spew("Sending post-trigger SR_DF_LOGIC packet, " - "start = %d, length = %d.", - (block * BS) + trigger_point, BS - trigger_point); - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = BS - trigger_point; - logic.unitsize = devc->prof->num_channels / 8; - logic.data = devc->final_buf + (block * BS) + trigger_point; - sr_session_send(devc->cb_data, &packet); - } -} diff --git a/hardware/chronovu-la8/protocol.h b/hardware/chronovu-la8/protocol.h deleted file mode 100644 index 2107eff5..00000000 --- a/hardware/chronovu-la8/protocol.h +++ /dev/null @@ -1,141 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2011-2014 Uwe Hermann - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H -#define LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H - -#include -#include -#include -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" - -#define LOG_PREFIX "la8/la16" - -#define SDRAM_SIZE (8 * 1024 * 1024) -#define MAX_NUM_SAMPLES SDRAM_SIZE - -#define BS 4096 /* Block size */ -#define NUM_BLOCKS 2048 /* Number of blocks */ - -enum { - CHRONOVU_LA8, - CHRONOVU_LA16, -}; - -struct cv_profile { - int model; - const char *modelname; - const char *iproduct; /* USB iProduct string */ - unsigned int num_channels; - uint64_t max_samplerate; - const char *trigger_type; - float trigger_constant; -}; - -/* Private, per-device-instance driver context. */ -struct dev_context { - /** Device profile struct for this device. */ - const struct cv_profile *prof; - - /** FTDI device context (used by libftdi). */ - struct ftdi_context *ftdic; - - /** The currently configured samplerate of the device. */ - uint64_t cur_samplerate; - - /** The current sampling limit (in ms). */ - uint64_t limit_msec; - - /** The current sampling limit (in number of samples). */ - uint64_t limit_samples; - - void *cb_data; - - /** - * A buffer containing some (mangled) samples from the device. - * Format: Pretty mangled-up (due to hardware reasons), see code. - */ - uint8_t mangled_buf[BS]; - - /** - * An 8MB buffer where we'll store the de-mangled samples. - * LA8: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. - * LA16: Each sample is 2 bytes, MSB is channel 15, LSB is channel 0. - */ - uint8_t *final_buf; - - /** - * Trigger pattern. - * A 1 bit matches a high signal, 0 matches a low signal on a channel. - * - * If the resp. 'trigger_edgemask' bit is set, 1 means "rising edge", - * and 0 means "falling edge". - */ - uint16_t trigger_pattern; - - /** - * Trigger mask. - * A 1 bit means "must match trigger_pattern", 0 means "don't care". - */ - uint16_t trigger_mask; - - /** - * Trigger edge mask. - * A 1 bit means "edge triggered", 0 means "state triggered". - * - * Edge triggering is only supported on LA16 (but not LA8). - */ - uint16_t trigger_edgemask; - - /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ - int trigger_found; - - /** Used for keeping track how much time has passed. */ - gint64 done; - - /** Counter/index for the data block to be read. */ - int block_counter; - - /** The divcount value (determines the sample period). */ - uint8_t divcount; - - /** This ChronoVu device's USB VID/PID. */ - uint16_t usb_vid; - uint16_t usb_pid; - - /** Samplerates supported by this device. */ - uint64_t samplerates[255]; -}; - -/* protocol.c */ -extern SR_PRIV const char *cv_channel_names[]; -extern const struct cv_profile cv_profiles[]; -SR_PRIV void cv_fill_samplerates_if_needed(const struct sr_dev_inst *sdi); -SR_PRIV uint8_t cv_samplerate_to_divcount(const struct sr_dev_inst *sdi, - uint64_t samplerate); -SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size); -SR_PRIV int cv_configure_channels(const struct sr_dev_inst *sdi); -SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate); -SR_PRIV int cv_read_block(struct dev_context *devc); -SR_PRIV void cv_send_block_to_session_bus(struct dev_context *devc, int block); - -#endif diff --git a/hwdriver.c b/hwdriver.c index 4728cb07..3a8c8dca 100644 --- a/hwdriver.c +++ b/hwdriver.c @@ -208,8 +208,8 @@ extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info; #ifdef HAVE_HW_ASIX_SIGMA extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info; #endif -#ifdef HAVE_HW_CHRONOVU_LA8 -extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; +#ifdef HAVE_HW_CHRONOVU_LA +extern SR_PRIV struct sr_dev_driver chronovu_la_driver_info; #endif #ifdef HAVE_HW_LINK_MSO19 extern SR_PRIV struct sr_dev_driver link_mso19_driver_info; @@ -366,8 +366,8 @@ static struct sr_dev_driver *drivers_list[] = { #ifdef HAVE_HW_ASIX_SIGMA &asix_sigma_driver_info, #endif -#ifdef HAVE_HW_CHRONOVU_LA8 - &chronovu_la8_driver_info, +#ifdef HAVE_HW_CHRONOVU_LA + &chronovu_la_driver_info, #endif #ifdef HAVE_HW_LINK_MSO19 &link_mso19_driver_info,