X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fchronovu-la%2Fapi.c;h=d6ed20d9277807a6d674dc94b557046d5745ca20;hb=HEAD;hp=292da5a4d3d8729ad4a27fe7edf6a95e356e4713;hpb=69bdcd8bb44f3368d473da4f9ad5069778b139e7;p=libsigrok.git diff --git a/hardware/chronovu-la/api.c b/hardware/chronovu-la/api.c deleted file mode 100644 index 292da5a4..00000000 --- a/hardware/chronovu-la/api.c +++ /dev/null @@ -1,544 +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_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: - if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) - return SR_ERR_BUG; - grange[0] = g_variant_new_uint64(0); - if (devc->prof->model == CHRONOVU_LA8) - grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES); - else - grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES / 2); - *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. - * - * Note: Due to the method how data is spread across the 8MByte of - * SDRAM, we can _not_ send it to the session bus in a streaming - * manner while we receive it. We have to receive and de-mangle the - * full 8MByte first, only then the whole buffer contains valid data. - */ - 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, -};