## This file is part of the sigrok project.
##
## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
+## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## 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
## This file is part of the sigrok project.
##
## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
+## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## 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
AC_DEFINE(HAVE_HW_FLUKE_DMM, 1, [Fluke DMM support])
fi
+AC_ARG_ENABLE(radioshack-dmm, AC_HELP_STRING([--enable-radioshack-dmm],
+ [Enable Fluke DMM support. [default=yes]]),
+ [HW_RADIOSHACK_DMM="$enableval"],
+ [HW_RADIOSHACK_DMM=yes])
+AM_CONDITIONAL(HW_RADIOSHACK_DMM, test x$HW_RADIOSHACK_DMM = xyes)
+if test "x$HW_RADIOSHACK_DMM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_RADIOSHACK_DMM, 1, [Radioshack DMM support])
+ fi
+
AC_ARG_ENABLE(fx2lafw, AC_HELP_STRING([--enable-fx2lafw],
[enable fx2lafw support (for FX2 LAs). [default=yes]]),
[LA_FX2LAFW="$enableval"],
hardware/common/Makefile
hardware/demo/Makefile
hardware/fluke-dmm/Makefile
+ hardware/radioshack-dmm/Makefile
hardware/fx2lafw/Makefile
hardware/genericdmm/Makefile
hardware/link-mso19/Makefile
echo " - ChronoVu LA8.................... $LA_CHRONOVU_LA8"
echo " - Demo driver..................... $LA_DEMO"
echo " - Fluke DMM....................... $HW_FLUKE_DMM"
+echo " - Radioshack DMM.................. $HW_RADIOSHACK_DMM"
echo " - fx2lafw (for FX2 LAs)........... $LA_FX2LAFW"
echo " - Generic DMM..................... $HW_GENERICDMM"
echo " - Link MSO-19..................... $LA_LINK_MSO19"
## This file is part of the sigrok project.
##
## Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
link-mso19 \
openbench-logic-sniffer \
zeroplus-logic-cube \
- hantek-dso
+ hantek-dso \
+ radioshack-dmm
noinst_LTLIBRARIES = libsigrokhardware.la
libsigrokhardware_la_LIBADD += fluke-dmm/libsigrokhwflukedmm.la
endif
+if HW_RADIOSHACK_DMM
+libsigrokhardware_la_LIBADD += radioshack-dmm/libsigrokhwradioshackdmm.la
+endif
+
if LA_FX2LAFW
libsigrokhardware_la_LIBADD += fx2lafw/libsigrokhwfx2lafw.la
endif
--- /dev/null
+##
+## This file is part of the sigrok project.
+##
+## Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+if HW_RADIOSHACK_DMM
+
+# Local lib, this is NOT meant to be installed!
+noinst_LTLIBRARIES = libsigrokhwradioshackdmm.la
+
+libsigrokhwradioshackdmm_la_SOURCES = \
+ api.c \
+ radioshack.c \
+ radioshack-dmm.h
+
+libsigrokhwradioshackdmm_la_CFLAGS = \
+ -I$(top_srcdir)
+
+endif
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include "libsigrok/libsigrok.h"
+#include "libsigrok-internal.h"
+#include "config.h"
+#include "radioshack-dmm.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+
+static const int hwopts[] = {
+ SR_HWOPT_CONN,
+ SR_HWOPT_SERIALCOMM,
+ 0,
+};
+
+static const int hwcaps[] = {
+ SR_HWCAP_MULTIMETER,
+ SR_HWCAP_LIMIT_SAMPLES,
+ SR_HWCAP_CONTINUOUS,
+ 0,
+};
+
+static const char *probe_names[] = {
+ "Probe",
+ NULL,
+};
+
+SR_PRIV struct sr_dev_driver radioshackdmm_driver_info;
+static struct sr_dev_driver *di = &radioshackdmm_driver_info;
+
+static const struct radioshackdmm_profile supported_radioshackdmm[] = {
+ { RADIOSHACK_22_812, "22-812", 100 },
+};
+
+
+/* Properly close and free all devices. */
+static int clear_instances(void)
+{
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *l;
+
+ if (!(drvc = di->priv))
+ return SR_OK;
+
+ drvc = di->priv;
+ for (l = drvc->instances; l; l = l->next) {
+ if (!(sdi = l->data))
+ continue;
+ if (!(devc = sdi->priv))
+ continue;
+ sr_serial_dev_inst_free(devc->serial);
+ sr_dev_inst_free(sdi);
+ }
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
+
+ return SR_OK;
+}
+
+static int hw_init(void)
+{
+ struct drv_context *drvc;
+
+ if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ sr_err("radioshack-dmm: driver context malloc failed.");
+ return SR_ERR;
+ }
+
+ di->priv = drvc;
+
+ return SR_OK;
+}
+
+static int serial_readline(int fd, char **buf, size_t *buflen,
+ uint64_t timeout_ms)
+{
+ uint64_t start;
+ int maxlen, len;
+
+ timeout_ms *= 1000;
+ start = g_get_monotonic_time();
+
+ maxlen = *buflen;
+ *buflen = len = 0;
+ while(1) {
+ len = maxlen - *buflen - 1;
+ if (len < 1)
+ break;
+ len = serial_read(fd, *buf + *buflen, 1);
+ if (len > 0) {
+ *buflen += len;
+ *(*buf + *buflen) = '\0';
+ if (*buflen > 0 && *(*buf + *buflen - 1) == '\r') {
+ /* Strip LF and terminate. */
+ *(*buf + --*buflen) = '\0';
+ break;
+ }
+ }
+ if (g_get_monotonic_time() - start > timeout_ms)
+ /* Timeout */
+ break;
+ g_usleep(2000);
+ }
+
+ return SR_OK;
+}
+
+static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
+{
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_probe *probe;
+ GSList *devices;
+ int fd, retry;
+ size_t len;
+ char buf[128], *b;
+
+ if ((fd = serial_open(conn, O_RDWR|O_NONBLOCK)) == -1) {
+ sr_err("radioshack-dmm: unable to open %s: %s",
+ conn, strerror(errno));
+ return NULL;
+ }
+ if (serial_set_paramstr(fd, serialcomm) != SR_OK) {
+ sr_err("radioshack-dmm: unable to set serial parameters");
+ return NULL;
+ }
+
+ drvc = di->priv;
+ b = buf;
+ retry = 0;
+ devices = NULL;
+ /* There's no way to get an ID from the multimeter. It just sends data
+ * periodically, so the best we can do is check if the packets match the
+ * expected format. */
+ while (!devices && retry < 3)
+ {
+ size_t i;
+ size_t good_packets = 0;
+ retry++;
+ serial_flush(fd);
+
+ /* Let's get a bit of data and see if we can find a packet */
+ len = sizeof(buf);
+ serial_readline(fd, &b, &len, 250);
+ if( (len == 0) || (len < RS_22_812_PACKET_SIZE) ) {
+ /* Not enough data received, is the DMM connected ? */
+ continue;
+ }
+
+ /* Let's treat our buffer like a stream, and find any
+ * valid packets */
+ for( i = 0; i < len - RS_22_812_PACKET_SIZE + 1;
+ /* don't increment i here */ )
+ {
+ const rs_22_812_packet *packet = (void *)(&buf[i]);
+ if( !rs_22_812_is_packet_valid(packet) ){
+ i++;
+ continue;
+ }
+ good_packets++;
+ i += RS_22_812_PACKET_SIZE;
+ }
+
+ /* If we dropped more than two packets worth of data, something
+ * is wrong */
+ size_t dropped = len - (good_packets * RS_22_812_PACKET_SIZE);
+ if(dropped > 2 * RS_22_812_PACKET_SIZE)
+ continue;
+
+ /* Let's see if we have anything good */
+ if (good_packets == 0)
+ continue;
+
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Radioshack",
+ "22-812", "")))
+ return NULL;
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_dbg("radioshack-dmm: failed to malloc devc");
+ return NULL;
+ }
+
+ /* devc->profile = RADIOSHACK_22_812; */
+ devc->serial = sr_serial_dev_inst_new(conn, -1);
+ devc->serialcomm = g_strdup(serialcomm);
+
+ sdi->priv = devc;
+ sdi->driver = di;
+ if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+ break;
+
+ }
+ serial_close(fd);
+
+ return devices;
+}
+
+static GSList *hw_scan(GSList *options)
+{
+ struct sr_hwopt *opt;
+ GSList *l, *devices;
+ const char *conn, *serialcomm;
+
+ conn = serialcomm = NULL;
+ for (l = options; l; l = l->next) {
+ opt = l->data;
+ switch (opt->hwopt) {
+ case SR_HWOPT_CONN:
+ conn = opt->value;
+ break;
+ case SR_HWOPT_SERIALCOMM:
+ serialcomm = opt->value;
+ break;
+ }
+ }
+ if (!conn)
+ return NULL;
+
+ if (serialcomm) {
+ /* Use the provided comm specs. */
+ devices = rs_22_812_scan(conn, serialcomm);
+ } else {
+ /* Then try the default 4800 8n1 */
+ devices = rs_22_812_scan(conn, "4800/8n1");
+ }
+
+ return devices;
+}
+
+static GSList *hw_dev_list(void)
+{
+ struct drv_context *drvc;
+
+ drvc = di->priv;
+
+ return drvc->instances;
+}
+
+static int hw_dev_open(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("radioshack-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ devc->serial->fd = serial_open(devc->serial->port, O_RDWR | O_NONBLOCK);
+ if (devc->serial->fd == -1) {
+ sr_err("radioshack-dmm: Couldn't open serial port '%s'.",
+ devc->serial->port);
+ return SR_ERR;
+ }
+ if (serial_set_paramstr(devc->serial->fd, devc->serialcomm) != SR_OK) {
+ sr_err("radioshack-dmm: unable to set serial parameters");
+ return SR_ERR;
+ }
+ sdi->status = SR_ST_ACTIVE;
+
+ return SR_OK;
+}
+
+static int hw_dev_close(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("radioshack-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ if (devc->serial && devc->serial->fd != -1) {
+ serial_close(devc->serial->fd);
+ devc->serial->fd = -1;
+ sdi->status = SR_ST_INACTIVE;
+ }
+
+ return SR_OK;
+}
+
+static int hw_cleanup(void)
+{
+ clear_instances();
+
+ return SR_OK;
+}
+
+static int hw_info_get(int info_id, const void **data,
+ const struct sr_dev_inst *sdi)
+{
+ (void)sdi; /* Does nothing. prevents "unused parameter" warning */
+
+ switch (info_id) {
+ case SR_DI_HWOPTS:
+ *data = hwopts;
+ break;
+ case SR_DI_HWCAPS:
+ *data = hwcaps;
+ break;
+ case SR_DI_NUM_PROBES:
+ *data = GINT_TO_POINTER(1);
+ break;
+ case SR_DI_PROBE_NAMES:
+ *data = probe_names;
+ break;
+ default:
+ return SR_ERR_ARG;
+ }
+
+ return SR_OK;
+}
+
+static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
+ const void *value)
+{
+ struct dev_context *devc;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("radioshack-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ switch (hwcap) {
+ case SR_HWCAP_LIMIT_SAMPLES:
+ devc->limit_samples = *(const uint64_t *)value;
+ sr_dbg("radioshack-dmm: Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
+ default:
+ sr_err("radioshack-dmm: Unknown capability: %d.", hwcap);
+ return SR_ERR;
+ break;
+ }
+
+ return SR_OK;
+}
+
+static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+ void *cb_data)
+{
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_header header;
+ struct sr_datafeed_meta_analog meta;
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("radioshack-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("radioshack-dmm: Starting acquisition.");
+
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ sr_dbg("radioshack-dmm: Sending SR_DF_HEADER.");
+ packet.type = SR_DF_HEADER;
+ packet.payload = (uint8_t *)&header;
+ header.feed_version = 1;
+ gettimeofday(&header.starttime, NULL);
+ sr_session_send(devc->cb_data, &packet);
+
+ /* Send metadata about the SR_DF_ANALOG packets to come. */
+ sr_dbg("radioshack-dmm: Sending SR_DF_META_ANALOG.");
+ packet.type = SR_DF_META_ANALOG;
+ packet.payload = &meta;
+ meta.num_probes = 1;
+ sr_session_send(devc->cb_data, &packet);
+
+ /* Poll every 100ms, or whenever some data comes in. */
+ sr_source_add(devc->serial->fd, G_IO_IN, 50,
+ radioshack_receive_data, (void *)sdi );
+
+ return SR_OK;
+}
+
+static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
+ void *cb_data)
+{
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("radioshack-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("radioshack-dmm: Stopping acquisition.");
+
+ sr_source_remove(devc->serial->fd);
+ hw_dev_close((struct sr_dev_inst *)sdi);
+
+ /* Send end packet to the session bus. */
+ sr_dbg("radioshack-dmm: Sending SR_DF_END.");
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+
+ return SR_OK;
+}
+
+SR_PRIV struct sr_dev_driver radioshackdmm_driver_info = {
+ .name = "radioshack-dmm",
+ .longname = "Radioshack 22-812/22-039 DMMs",
+ .api_version = 1,
+ .init = hw_init,
+ .cleanup = hw_cleanup,
+ .scan = hw_scan,
+ .dev_list = hw_dev_list,
+ .dev_clear = clear_instances,
+ .dev_open = hw_dev_open,
+ .dev_close = hw_dev_close,
+ .info_get = hw_info_get,
+ .dev_config_set = hw_dev_config_set,
+ .dev_acquisition_start = hw_dev_acquisition_start,
+ .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .priv = NULL,
+};
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBSIGROK_RADIOSHACK_DMM_H
+#define LIBSIGROK_RADIOSHACK_DMM_H
+
+#define RS_DMM_BUFSIZE 256
+
+/* Byte 1 of the packet, and the modes it represents */
+#define RS_22_812_IND1_HZ (0x80)
+#define RS_22_812_IND1_OHM (0x40)
+#define RS_22_812_IND1_KILO (0x20)
+#define RS_22_812_IND1_MEGA (0x10)
+#define RS_22_812_IND1_FARAD (0x08)
+#define RS_22_812_IND1_AMP (0x04)
+#define RS_22_812_IND1_VOLT (0x02)
+#define RS_22_812_IND1_MILI (0x01)
+/* Byte 2 of the packet, and the modes it represents */
+#define RS_22_812_IND2_MICRO (0x80)
+#define RS_22_812_IND2_NANO (0x40)
+#define RS_22_812_IND2_DBM (0x20)
+#define RS_22_812_IND2_SEC (0x10)
+#define RS_22_812_IND2_DUTY (0x08)
+#define RS_22_812_IND2_HFE (0x04)
+#define RS_22_812_IND2_REL (0x02)
+#define RS_22_812_IND2_MIN (0x01)
+/* Byte 7 of the packet, and the modes it represents */
+#define RS_22_812_INFO_BEEP (0x80)
+#define RS_22_812_INFO_DIODE (0x30)
+#define RS_22_812_INFO_BAT (0x20)
+#define RS_22_812_INFO_HOLD (0x10)
+#define RS_22_812_INFO_NEG (0x08)
+#define RS_22_812_INFO_AC (0x04)
+#define RS_22_812_INFO_RS232 (0x02)
+#define RS_22_812_INFO_AUTO (0x01)
+/* Instead of a decimal point, digit 4 carries the MAX flag */
+#define RS_22_812_DIG4_MAX (0x08)
+/* mask to remove the decimal point fr0m a digit */
+#define RS_22_812_DP_MASK (0x08)
+
+/* What the LCD values represent */
+#define RS_22_812_LCD_0 0xd7
+#define RS_22_812_LCD_1 0x50
+#define RS_22_812_LCD_2 0xb5
+#define RS_22_812_LCD_3 0xf1
+#define RS_22_812_LCD_4 0x72
+#define RS_22_812_LCD_5 0xe3
+#define RS_22_812_LCD_6 0xe7
+#define RS_22_812_LCD_7 0x51
+#define RS_22_812_LCD_8 0xf7
+#define RS_22_812_LCD_9 0xf3
+
+#define RS_22_812_LCD_C 0x87
+#define RS_22_812_LCD_E
+#define RS_22_812_LCD_F
+#define RS_22_812_LCD_h 0x66
+#define RS_22_812_LCD_H
+#define RS_22_812_LCD_I
+#define RS_22_812_LCD_n
+#define RS_22_812_LCD_P 0x37
+#define RS_22_812_LCD_r
+
+typedef struct {
+ uint8_t mode;
+ uint8_t indicatrix1;
+ uint8_t indicatrix2;
+ uint8_t digit4;
+ uint8_t digit3;
+ uint8_t digit2;
+ uint8_t digit1;
+ uint8_t info;
+ uint8_t checksum;
+} rs_22_812_packet;
+
+#define RS_22_812_PACKET_SIZE (sizeof(rs_22_812_packet))
+
+typedef enum {
+ RS_22_812_MODE_DC_V = 0,
+ RS_22_812_MODE_AC_V = 1,
+ RS_22_812_MODE_DC_UA = 2,
+ RS_22_812_MODE_DC_MA = 3,
+ RS_22_812_MODE_DC_A = 4,
+ RS_22_812_MODE_AC_UA = 5,
+ RS_22_812_MODE_AC_MA = 6,
+ RS_22_812_MODE_AC_A = 7,
+ RS_22_812_MODE_OHM = 8,
+ RS_22_812_MODE_FARAD = 9,
+ RS_22_812_MODE_HZ = 10,
+ RS_22_812_MODE_VOLT_HZ = 11,
+ RS_22_812_MODE_AMP_HZ = 12,
+ RS_22_812_MODE_DUTY = 13,
+ RS_22_812_MODE_VOLT_DUTY= 14,
+ RS_22_812_MODE_AMP_DUTY = 15,
+ RS_22_812_MODE_WIDTH = 16,
+ RS_22_812_MODE_VOLT_WIDTH = 17,
+ RS_22_812_MODE_AMP_WIDTH = 18,
+ RS_22_812_MODE_DIODE = 19,
+ RS_22_812_MODE_CONT = 20,
+ RS_22_812_MODE_HFE = 21,
+ RS_22_812_MODE_LOGIC = 22,
+ RS_22_812_MODE_DBM = 23,
+ //RS_22_812_MODE_ EF = 24,
+ RS_22_812_MODE_TEMP = 25,
+ RS_22_812_MODE_INVALID = 26,
+} rs_22_812_mode;
+
+SR_PRIV gboolean rs_22_812_is_packet_valid(const rs_22_812_packet *data );
+
+/* Supported models */
+typedef enum {
+ RADIOSHACK_22_812 = 1,
+} radioshack_model;
+
+/* Supported device profiles */
+struct radioshackdmm_profile {
+ radioshack_model model;
+ const char *modelname;
+ /* How often to poll, in ms. */
+ int poll_period;
+};
+
+/* Private, per-device-instance driver context. */
+typedef struct dev_context {
+ /* const struct radioshackdmm_profile *profile; */
+ uint64_t limit_samples;
+ struct sr_serial_dev_inst *serial;
+ char *serialcomm;
+
+ /* Opaque pointer passed in by the frontend. */
+ void *cb_data;
+
+ /* Runtime. */
+ uint64_t num_samples;
+ uint8_t buf[RS_DMM_BUFSIZE];
+ size_t bufoffset;
+ size_t buflen;
+} rs_dev_ctx;
+
+
+SR_PRIV int radioshack_receive_data(int fd, int revents, void *cb_data);
+
+#endif /* LIBSIGROK_RADIOSHACK_DMM_H */
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+#include "config.h"
+#include "radioshack-dmm.h"
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include <errno.h>
+
+
+static gboolean rs_22_812_is_checksum_valid(const rs_22_812_packet *data)
+{
+ uint8_t *raw = (void *) data;
+ uint8_t sum = 0;
+ size_t i;
+ for(i = 0; i < RS_22_812_PACKET_SIZE - 1; i++)
+ sum += raw[i];
+ /* This is just a funky constant added to the checksum */
+ sum += 57;
+ sum -= data->checksum;
+ return(sum == 0);
+}
+
+static gboolean rs_22_812_is_mode_valid(rs_22_812_mode mode)
+{
+ return(mode < RS_22_812_MODE_INVALID);
+}
+
+static gboolean rs_22_812_is_selection_good(const rs_22_812_packet *data)
+{
+ int n_postfix = 0;
+ int n_type = 0;
+ /* Does the packet have more than one multiplier ? */
+ if(data->indicatrix1 & RS_22_812_IND1_KILO)
+ n_postfix++;
+ if(data->indicatrix1 & RS_22_812_IND1_MEGA)
+ n_postfix++;
+ if(data->indicatrix1 & RS_22_812_IND1_MILI)
+ n_postfix++;
+ if(data->indicatrix2 & RS_22_812_IND2_MICRO)
+ n_postfix++;
+ if(data->indicatrix2 & RS_22_812_IND2_NANO)
+ n_postfix++;
+ if(n_postfix > 1)
+ return FALSE;
+
+ /* Does the packet "measure" more than one type of value ?*/
+ if(data->indicatrix1 & RS_22_812_IND1_HZ)
+ n_type++;
+ if(data->indicatrix1 & RS_22_812_IND1_OHM)
+ n_type++;
+ if(data->indicatrix1 & RS_22_812_IND1_FARAD)
+ n_type++;
+ if(data->indicatrix1 & RS_22_812_IND1_AMP)
+ n_type++;
+ if(data->indicatrix1 & RS_22_812_IND1_VOLT)
+ n_type++;
+ if(data->indicatrix2 & RS_22_812_IND2_DBM)
+ n_type++;
+ if(data->indicatrix2 & RS_22_812_IND2_SEC)
+ n_type++;
+ if(data->indicatrix2 & RS_22_812_IND2_DUTY)
+ n_type++;
+ if(data->indicatrix2 & RS_22_812_IND2_HFE)
+ n_type++;
+ if(n_type > 1)
+ return FALSE;
+
+ /* OK, no duplicates */
+ return TRUE;
+}
+
+/* Since the RS 22-812 does not identify itslef in any way shape, or form,
+ * we really don't know for sure who is sending the data. We must use every
+ * possible check to filter out bad packets, especially since detection of the
+ * 22-812 depends on how well we can filter the packets */
+SR_PRIV gboolean rs_22_812_is_packet_valid(const rs_22_812_packet *packet)
+{
+ /* Unfortunately, the packet doesn't have a signature, so we must
+ * compute its checksum first */
+ if(!rs_22_812_is_checksum_valid(packet))
+ return FALSE;
+
+ if(!rs_22_812_is_mode_valid(packet->mode))
+ return FALSE;
+
+ if(!rs_22_812_is_selection_good(packet)) {
+ return FALSE;
+ }
+ /* Made it here, huh? Then this looks to be a valid packet */
+ return TRUE;
+}
+
+static uint8_t rs_22_812_to_digit(uint8_t raw_digit)
+{
+ /* Take out the decimal point, so we can use a simple switch() */
+ raw_digit &= ~RS_22_812_DP_MASK;
+ switch(raw_digit)
+ {
+ case 0x00:
+ case RS_22_812_LCD_0:
+ return 0;
+ case RS_22_812_LCD_1:
+ return 1;
+ case RS_22_812_LCD_2:
+ return 2;
+ case RS_22_812_LCD_3:
+ return 3;
+ case RS_22_812_LCD_4:
+ return 4;
+ case RS_22_812_LCD_5:
+ return 5;
+ case RS_22_812_LCD_6:
+ return 6;
+ case RS_22_812_LCD_7:
+ return 7;
+ case RS_22_812_LCD_8:
+ return 8;
+ case RS_22_812_LCD_9:
+ return 9;
+ default:
+ return 0xff;
+ }
+}
+
+typedef enum {
+ READ_ALL,
+ READ_TEMP,
+} value_type;
+
+static double lcdraw_to_double(rs_22_812_packet *rs_packet, value_type type)
+{
+ /* *********************************************************************
+ * Get a raw floating point value from the data
+ **********************************************************************/
+ double rawval;
+ double multiplier = 1;
+ uint8_t digit;
+ gboolean dp_reached = FALSE;
+ int i, end;
+ switch(type) {
+ case READ_TEMP:
+ /* Do not parse the last digit */
+ end = 1;
+ break;
+ case READ_ALL:
+ default:
+ /* Parse all digits */
+ end = 0;
+ }
+ /* We have 4 digits, and we start from the most significant */
+ for(i = 3; i >= end; i--)
+ {
+ uint8_t raw_digit = *(&(rs_packet->digit4) + i);
+ digit = rs_22_812_to_digit(raw_digit);
+ if(digit == 0xff) {
+ rawval = NAN;
+ break;
+ }
+ /* Digit 1 does not have a decimal point. Instead, the decimal
+ * point is used to indicate MAX, so we must avoid testing it */
+ if( (i < 3) && (raw_digit & RS_22_812_DP_MASK) )
+ dp_reached = TRUE;
+ if(dp_reached) multiplier /= 10;
+ rawval = rawval * 10 + digit;
+ }
+ rawval *= multiplier;
+ if(rs_packet->info & RS_22_812_INFO_NEG)
+ rawval *= -1;
+
+ /* See if we need to multiply our raw value by anything */
+ if(rs_packet->indicatrix1 & RS_22_812_IND2_NANO) {
+ rawval *= 1E-9;
+ } else if(rs_packet->indicatrix2 & RS_22_812_IND2_MICRO) {
+ rawval *= 1E-6;
+ } else if(rs_packet->indicatrix1 & RS_22_812_IND1_MILI) {
+ rawval *= 1E-3;
+ } else if(rs_packet->indicatrix1 & RS_22_812_IND1_KILO) {
+ rawval *= 1E3;
+ } else if(rs_packet->indicatrix1 & RS_22_812_IND1_MEGA) {
+ rawval *= 1E6;
+ }
+
+ return rawval;
+}
+
+static gboolean rs_22_812_is_celsius(rs_22_812_packet *rs_packet)
+{
+ return((rs_packet->digit4 & ~RS_22_812_DP_MASK) == RS_22_812_LCD_C);
+}
+
+static gboolean rs_22_812_is_shortcirc(rs_22_812_packet *rs_packet)
+{
+ return((rs_packet->digit2 & ~RS_22_812_DP_MASK) == RS_22_812_LCD_h);
+}
+
+static void rs_22_812_handle_packet(rs_22_812_packet *rs_packet,
+ rs_dev_ctx *devc)
+{
+ double rawval = lcdraw_to_double(rs_packet, READ_ALL);
+ /* *********************************************************************
+ * Now see what the value means, and pass that on
+ **********************************************************************/
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog *analog;
+
+ analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
+ analog->num_samples = 1;
+ analog->data = g_try_malloc(sizeof(float));
+ *analog->data = (float)rawval;
+ analog->mq = -1;
+
+ switch(rs_packet->mode) {
+ case RS_22_812_MODE_DC_V:
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ analog->mqflags |= SR_MQFLAG_DC;
+ break;
+ case RS_22_812_MODE_AC_V:
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ analog->mqflags |= SR_MQFLAG_AC;
+ break;
+ case RS_22_812_MODE_DC_UA:
+ case RS_22_812_MODE_DC_MA:
+ case RS_22_812_MODE_DC_A:
+ analog->mq = SR_MQ_CURRENT;
+ analog->unit = SR_UNIT_AMPERE;
+ analog->mqflags |= SR_MQFLAG_DC;
+ break;
+ case RS_22_812_MODE_AC_UA:
+ case RS_22_812_MODE_AC_MA:
+ case RS_22_812_MODE_AC_A:
+ analog->mq = SR_MQ_CURRENT;
+ analog->unit = SR_UNIT_AMPERE;
+ analog->mqflags |= SR_MQFLAG_AC;
+ break;
+ case RS_22_812_MODE_OHM:
+ analog->mq = SR_MQ_RESISTANCE;
+ analog->unit = SR_UNIT_OHM;
+ break;
+ case RS_22_812_MODE_FARAD:
+ analog->mq = SR_MQ_CAPACITANCE;
+ analog->unit = SR_UNIT_FARAD;
+ break;
+ case RS_22_812_MODE_CONT:
+ analog->mq = SR_MQ_CONTINUITY;
+ analog->unit = SR_UNIT_BOOLEAN;
+ *analog->data = rs_22_812_is_shortcirc(rs_packet);
+ break;
+ case RS_22_812_MODE_DIODE:
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ analog->mqflags |= SR_MQFLAG_DIODE | SR_MQFLAG_DC;
+ break;
+ case RS_22_812_MODE_HZ:
+ case RS_22_812_MODE_VOLT_HZ:
+ case RS_22_812_MODE_AMP_HZ:
+ analog->mq = SR_MQ_FREQUENCY;
+ analog->unit = SR_UNIT_HERTZ;
+ break;
+ case RS_22_812_MODE_LOGIC:
+ analog->mq = 0; /* FIXME */
+ analog->unit = SR_UNIT_BOOLEAN;
+ sr_warn("radioshack-dmm: LOGIC mode not supported yet");
+ g_free(analog->data);
+ g_free(analog);
+ return;
+ break;
+ case RS_22_812_MODE_HFE:
+ analog->mq = SR_MQ_GAIN;
+ analog->unit = SR_UNIT_UNITLESS;
+ break;
+ case RS_22_812_MODE_DUTY:
+ case RS_22_812_MODE_VOLT_DUTY:
+ case RS_22_812_MODE_AMP_DUTY:
+ analog->mq = SR_MQ_DUTY_CYCLE;
+ analog->unit = SR_UNIT_PERCENTAGE;
+ break;
+ case RS_22_812_MODE_WIDTH:
+ case RS_22_812_MODE_VOLT_WIDTH:
+ case RS_22_812_MODE_AMP_WIDTH:
+ analog->mq = SR_MQ_PULSE_WIDTH;
+ analog->unit = SR_UNIT_SECOND;
+ case RS_22_812_MODE_TEMP:
+ analog->mq = SR_MQ_TEMPERATURE;
+ /* We need to reparse */
+ *analog->data = lcdraw_to_double(rs_packet, READ_TEMP);
+ analog->unit = rs_22_812_is_celsius(rs_packet)?
+ SR_UNIT_CELSIUS:SR_UNIT_FAHRENHEIT;
+ break;
+ case RS_22_812_MODE_DBM:
+ analog->mq = SR_MQ_POWER;
+ analog->unit = SR_UNIT_DECIBEL_MW;
+ analog->mqflags |= SR_MQFLAG_AC;
+ break;
+ default:
+ sr_warn("radioshack-dmm: unkown mode: %d", rs_packet->mode);
+ break;
+ }
+
+ if(rs_packet->info & RS_22_812_INFO_HOLD) {
+ analog->mqflags |= SR_MQFLAG_HOLD;
+ }
+ if(rs_packet->digit4 & RS_22_812_DIG4_MAX) {
+ analog->mqflags |= SR_MQFLAG_MAX;
+ }
+ if(rs_packet->indicatrix2 & RS_22_812_IND2_MIN) {
+ analog->mqflags |= SR_MQFLAG_MIN;
+ }
+ if(rs_packet->info & RS_22_812_INFO_AUTO) {
+ analog->mqflags |= SR_MQFLAG_AUTORANGE;
+ }
+
+ if (analog->mq != -1) {
+ /* Got a measurement. */
+ sr_spew("radioshack-dmm: val %f", rawval);
+ packet.type = SR_DF_ANALOG;
+ packet.payload = analog;
+ sr_session_send(devc->cb_data, &packet);
+ devc->num_samples++;
+ }
+ g_free(analog->data);
+ g_free(analog);
+}
+
+static void handle_new_data(rs_dev_ctx *devc, int fd)
+{
+ int len;
+ size_t i;
+ size_t offset = 0;
+ /* Try to get as much data as the buffer can hold */
+ len = RS_DMM_BUFSIZE - devc->buflen;
+ len = serial_read(fd, devc->buf + devc->buflen, len);
+ if (len < 1) {
+ sr_err("radioshack-dmm: serial port read error!");
+ return;
+ }
+ devc->buflen += len;
+
+ /* Now look for packets in that data */
+ while((devc->buflen - offset) >= RS_22_812_PACKET_SIZE)
+ {
+ rs_22_812_packet * packet = (void *)(devc->buf + offset);
+ if( rs_22_812_is_packet_valid(packet) )
+ {
+ rs_22_812_handle_packet(packet, devc);
+ offset += RS_22_812_PACKET_SIZE;
+ } else {
+ offset++;
+ }
+ }
+
+ /* If we have any data left, move it to the beginning of our buffer */
+ for(i = 0; i < devc->buflen - offset; i++)
+ devc->buf[i] = devc->buf[offset + i];
+ devc->buflen -= offset;
+}
+
+SR_PRIV int radioshack_receive_data(int fd, int revents, void *cb_data)
+{
+ const struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+
+ if (!(sdi = cb_data))
+ return TRUE;
+
+ if (!(devc = sdi->priv))
+ return TRUE;
+
+ if (revents == G_IO_IN)
+ {
+ /* Serial data arrived. */
+ handle_new_data(devc, fd);
+ }
+
+ if (devc->num_samples >= devc->limit_samples) {
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ return TRUE;
+ }
+
+ return TRUE;
+}
+
+
#ifdef HAVE_HW_FLUKE_DMM
extern SR_PRIV struct sr_dev_driver flukedmm_driver_info;
#endif
+#ifdef HAVE_HW_RADIOSHACK_DMM
+extern SR_PRIV struct sr_dev_driver radioshackdmm_driver_info;
+#endif
static struct sr_dev_driver *drivers_list[] = {
#ifdef HAVE_LA_DEMO
#endif
#ifdef HAVE_HW_FLUKE_DMM
&flukedmm_driver_info,
+#endif
+#ifdef HAVE_HW_RADIOSHACK_DMM
+ &radioshackdmm_driver_info,
#endif
NULL,
};
projects / libsigrok.git / commitdiff