Also known as Digitek DT4000ZC.
Signed-off-by: Alexandru Gagniuc <redacted>
AC_DEFINE(HAVE_HW_RADIOSHACK_DMM, 1, [RadioShack DMM support])
fi
+AC_ARG_ENABLE(tekpower-dmm, AC_HELP_STRING([--enable-tekpower-dmm],
+ [enable Tekpower DMM support. [default=yes]]),
+ [HW_TEKPOWER_DMM="$enableval"],
+ [HW_TEKPOWER_DMM=yes])
+AM_CONDITIONAL(HW_TEKPOWER_DMM, test x$HW_TEKPOWER_DMM = xyes)
+if test "x$HW_TEKPOWER_DMM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_TEKPOWER_DMM, 1, [TekPower DMM support])
+fi
+
AC_ARG_ENABLE(zeroplus-logic-cube,
AC_HELP_STRING([--enable-zeroplus-logic-cube],
[enable ZEROPLUS Logic Cube support [default=yes]]),
hardware/link-mso19/Makefile
hardware/openbench-logic-sniffer/Makefile
hardware/radioshack-dmm/Makefile
+ hardware/tekpower-dmm/Makefile
hardware/zeroplus-logic-cube/Makefile
input/Makefile
output/Makefile
echo " - Link MSO-19..................... $LA_LINK_MSO19"
echo " - Openbench Logic Sniffer......... $LA_OLS"
echo " - Radioshack DMM.................. $HW_RADIOSHACK_DMM"
+echo " - Tekpower DMM.................... $HW_TEKPOWER_DMM"
echo " - ZEROPLUS Logic Cube............. $LA_ZEROPLUS_LOGIC_CUBE"
echo
link-mso19 \
openbench-logic-sniffer \
radioshack-dmm \
+ tekpower-dmm \
zeroplus-logic-cube
noinst_LTLIBRARIES = libsigrokhardware.la
libsigrokhardware_la_LIBADD += radioshack-dmm/libsigrokhwradioshackdmm.la
endif
+if HW_TEKPOWER_DMM
+libsigrokhardware_la_LIBADD += tekpower-dmm/libsigrokhwtekpowerdmm.la
+endif
+
if LA_ZEROPLUS_LOGIC_CUBE
libsigrokhardware_la_LIBADD += zeroplus-logic-cube/libsigrokhwzeroplus.la
endif
--- /dev/null
+##
+## This file is part of the sigrok project.
+##
+## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+if HW_TEKPOWER_DMM
+
+# Local lib, this is NOT meant to be installed!
+noinst_LTLIBRARIES = libsigrokhwtekpowerdmm.la
+
+libsigrokhwtekpowerdmm_la_SOURCES = \
+ api.c \
+ protocol.c \
+ protocol.h
+
+libsigrokhwtekpowerdmm_la_CFLAGS = \
+ -I$(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.h"
+#include "libsigrok-internal.h"
+#include "protocol.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 tekpower_driver_info;
+static struct sr_dev_driver *di = &tekpower_driver_info;
+
+/* 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("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 *lcd14_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_RDONLY|O_NONBLOCK)) == -1) {
+ sr_err("unable to open %s: %s",
+ conn, strerror(errno));
+ return NULL;
+ }
+ if (serial_set_paramstr(fd, serialcomm) != SR_OK) {
+ sr_err("unable to set serial parameters");
+ return NULL;
+ }
+
+ sr_info("probing port %s readonly", conn);
+
+ drvc = di->priv;
+ b = buf;
+ retry = 0;
+ devices = NULL;
+ serial_flush(fd);
+ /* 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++;
+
+ /* Let's get a bit of data and see if we can find a packet */
+ len = sizeof(buf);
+ serial_readline(fd, &b, &len, 500);
+ if( (len == 0) || (len < LCD14_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 - LCD14_PACKET_SIZE + 1;
+ /* don't increment i here */ )
+ {
+ const lcd14_packet *packet = (void *)(&buf[i]);
+ if( !lcd14_is_packet_valid(packet, NULL) ){
+ i++;
+ continue;
+ }
+ good_packets++;
+ i += LCD14_PACKET_SIZE;
+ }
+
+ /* If we dropped more than two packets worth of data, something
+ * is wrong */
+ size_t dropped = len - (good_packets * LCD14_PACKET_SIZE);
+ if(dropped > 2 * LCD14_PACKET_SIZE)
+ continue;
+
+ /* Let's see if we have anything good */
+ if (good_packets == 0)
+ continue;
+
+ sr_info("found device on port %s", conn);
+
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "TekPower",
+ "TP4000ZC", "")))
+ return NULL;
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_dbg("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 = lcd14_scan(conn, serialcomm);
+ } else {
+ /* Then try the default 2400 8n1 */
+ devices = lcd14_scan(conn, "2400/8n1");
+ }
+
+ 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("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ devc->serial->fd = serial_open(devc->serial->port, O_RDONLY);
+ if (devc->serial->fd == -1) {
+ sr_err("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("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("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("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ switch (hwcap) {
+ case SR_HWCAP_LIMIT_SAMPLES:
+ devc->limit_samples = *(const uint64_t *)value;
+ sr_dbg("Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
+ default:
+ sr_err("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("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("Starting acquisition.");
+
+ devc->cb_data = cb_data;
+
+ /* Reset the number of samples to take. If we've already collected our
+ * quota, but we start a new session, and don't reset this, we'll just
+ * quit without aquiring any new samples */
+ devc->num_samples = 0;
+
+ /* Send header packet to the session bus. */
+ sr_dbg("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("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,
+ lcd14_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("sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("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("Sending SR_DF_END.");
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+
+ return SR_OK;
+}
+
+SR_PRIV struct sr_dev_driver tekpower_driver_info = {
+ .name = "tekpower-dmm",
+ .longname = "TekPower/Digitek 4000ZC",
+ .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 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 "protocol.h"
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include <errno.h>
+
+
+static gboolean lcd14_is_sync_valid(const lcd14_packet *packet)
+{
+ size_t i;
+ /* Check the syncronization nibbles, and make sure they all match */
+ for(i = 0; i < LCD14_PACKET_SIZE; i++)
+ {
+ uint8_t sync = (packet->raw[i] & LCD14_SYNC_MASK) >> 4;
+ if(sync != (i+1) )
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean lcd14_is_selection_good(const lcd14_data *data)
+{
+ int n_postfix = 0;
+ int n_type = 0;
+ /* Does the packet have more than one multiplier ? */
+ if(data->flags & LCD14_NANO)
+ n_postfix++;
+ if(data->flags & LCD14_MICRO)
+ n_postfix++;
+ if(data->flags & LCD14_MILLI)
+ n_postfix++;
+ if(data->flags & LCD14_KILO)
+ n_postfix++;
+ if(data->flags & LCD14_MEGA)
+ n_postfix++;
+
+ if(n_postfix > 1)
+ return FALSE;
+
+ /* Does the packet "measure" more than one type of value ?*/
+ if(data->flags & LCD14_HZ)
+ n_type++;
+ if(data->flags & LCD14_OHM)
+ n_type++;
+ if(data->flags & LCD14_FARAD)
+ n_type++;
+ if(data->flags & LCD14_AMP)
+ n_type++;
+ if(data->flags & LCD14_VOLT)
+ n_type++;
+ if(data->flags & LCD14_DUTY)
+ n_type++;
+ if(data->flags & LCD14_CELSIUS)
+ n_type++;
+ /* Do not test for hFE. hFE is not implemented and always '1' */
+ if(n_type > 1)
+ return FALSE;
+
+ /* Both AC and DC ? */
+ if( (data->flags & LCD14_AC) && (data->flags & LCD14_DC) )
+ return FALSE;
+
+ /* OK, no duplicates */
+ return TRUE;
+}
+
+/* We "cook" a raw lcd14_pcaket into a more pallatable form, lcd14_data */
+static void lcd14_cook_raw(const lcd14_packet *packet, lcd14_data * data)
+{
+ size_t i;
+
+ /* Get the digits out */
+ for(i = 0; i < 4; i++)
+ {
+ size_t j = (i << 1) + 1;
+ data->digit[i] = ( (packet->raw[j] & ~LCD14_SYNC_MASK) << 4 ) |
+ ( (packet->raw[j+1] & ~LCD14_SYNC_MASK) );
+ }
+
+ /* Now extract the flags */
+ data->flags = ( (packet->raw[0] & ~LCD14_SYNC_MASK) << 20) |
+ ( (packet->raw[9] & ~LCD14_SYNC_MASK) << 16) |
+ ( (packet->raw[10]& ~LCD14_SYNC_MASK) << 12) |
+ ( (packet->raw[11]& ~LCD14_SYNC_MASK) << 8) |
+ ( (packet->raw[12]& ~LCD14_SYNC_MASK) << 4) |
+ ( (packet->raw[13]& ~LCD14_SYNC_MASK) );
+}
+
+
+/* Since the DMM 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 mechanism depends
+ * on how well we can filter out bad packets packets */
+SR_PRIV gboolean lcd14_is_packet_valid(const lcd14_packet *packet,
+ lcd14_data *data)
+{
+ /* Callers not interested in the data, pass NULL */
+ lcd14_data placeholder;
+ if(data == NULL)
+ data = &placeholder;
+ /* We start with our syncronization nibbles, then move to more advanced
+ * checks */
+ if(!lcd14_is_sync_valid(packet))
+ return FALSE;
+
+ lcd14_cook_raw(packet, data);
+
+ if(!lcd14_is_selection_good(data))
+ return FALSE;
+
+ /* Made it here, huh? Then this looks to be a valid packet */
+ return TRUE;
+}
+
+static uint8_t lcd14_to_digit(uint8_t raw_digit)
+{
+ /* Take out the decimal point, so we can use a simple switch() */
+ raw_digit &= ~LCD14_DP_MASK;
+ switch(raw_digit)
+ {
+ case 0x00:
+ case LCD14_LCD_0:
+ return 0;
+ case LCD14_LCD_1:
+ return 1;
+ case LCD14_LCD_2:
+ return 2;
+ case LCD14_LCD_3:
+ return 3;
+ case LCD14_LCD_4:
+ return 4;
+ case LCD14_LCD_5:
+ return 5;
+ case LCD14_LCD_6:
+ return 6;
+ case LCD14_LCD_7:
+ return 7;
+ case LCD14_LCD_8:
+ return 8;
+ case LCD14_LCD_9:
+ return 9;
+ default:
+ return LCD14_LCD_INVALID;
+ }
+}
+
+static double lcdraw_to_double(lcd14_data *data)
+{
+ /* *********************************************************************
+ * Get a raw floating point value from the data
+ **********************************************************************/
+ double rawval;
+ double multiplier = 1;
+ uint8_t digit;
+ gboolean dp_reached = FALSE;
+ int i;
+
+ /* We have 4 digits, and we start from the most significant */
+ for(i = 0; i < 4; i++)
+ {
+ uint8_t raw_digit = data->digit[i];
+ digit = lcd14_to_digit(raw_digit);
+ if(digit == LCD14_LCD_INVALID) {
+ 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 > 0) && (raw_digit & LCD14_DP_MASK) )
+ dp_reached = TRUE;
+ if(dp_reached) multiplier /= 10;
+ rawval = rawval * 10 + digit;
+ }
+ rawval *= multiplier;
+ if(data->digit[0] & LCD14_D0_NEG)
+ rawval *= -1;
+
+ /* See if we need to multiply our raw value by anything */
+ if(data->flags & LCD14_NANO) {
+ rawval *= 1E-9;
+ } else if(data->flags & LCD14_MICRO) {
+ rawval *= 1E-6;
+ } else if(data->flags & LCD14_MILLI) {
+ rawval *= 1E-3;
+ } else if(data->flags & LCD14_KILO) {
+ rawval *= 1E3;
+ } else if(data->flags & LCD14_MEGA) {
+ rawval *= 1E6;
+ }
+
+ return rawval;
+}
+
+static void lcd14_handle_packet(lcd14_data *data, struct dev_context *devc)
+{
+ double rawval = lcdraw_to_double(data);
+ /* *********************************************************************
+ * Now see what the value means, and pass that on
+ **********************************************************************/
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog *analog;
+
+ if( !(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))) ) {
+ sr_err("failed to malloc packet");
+ return;
+ }
+ analog->num_samples = 1;
+ if( !(analog->data = g_try_malloc(sizeof(float))) ) {
+ sr_err("failed to malloc data");
+ g_free(analog);
+ return;
+ }
+ *analog->data = (float)rawval;
+ analog->mq = -1;
+
+ /* What does the data mean ? */
+ if(data->flags & LCD14_VOLT) {
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ if(data->flags & LCD14_AC)
+ analog->mqflags |= SR_MQFLAG_AC;
+ else
+ analog->mqflags |= SR_MQFLAG_DC;
+ }
+ else if(data->flags & LCD14_AMP) {
+ analog->mq = SR_MQ_CURRENT;
+ analog->unit = SR_UNIT_AMPERE;
+ if(data->flags & LCD14_AC)
+ analog->mqflags |= SR_MQFLAG_AC;
+ else
+ analog->mqflags |= SR_MQFLAG_DC;
+ }
+ else if(data->flags & LCD14_OHM) {
+ if(data->flags & LCD14_BEEP)
+ analog->mq = SR_MQ_CONTINUITY;
+ else
+ analog->mq = SR_MQ_RESISTANCE;
+ if(!isnan(rawval) )
+ analog->unit = SR_UNIT_OHM;
+ else {
+ analog->unit = SR_UNIT_BOOLEAN;
+ *analog->data = FALSE;
+ }
+ }
+ else if(data->flags & LCD14_FARAD) {
+ analog->mq = SR_MQ_CAPACITANCE;
+ analog->unit = SR_UNIT_FARAD;
+ }
+ else if(data->flags & LCD14_CELSIUS) {
+ analog->mq = SR_MQ_TEMPERATURE;
+ /* No Kelvin or Fahrenheit from the deive, just Celsius */
+ analog->unit = SR_UNIT_CELSIUS;
+ }
+ else if(data->flags & LCD14_HZ) {
+ analog->mq = SR_MQ_FREQUENCY;
+ analog->unit = SR_UNIT_HERTZ;
+ }
+ else if(data->flags & LCD14_DUTY) {
+ analog->mq = SR_MQ_DUTY_CYCLE;
+ analog->unit = SR_UNIT_PERCENTAGE;
+ }
+ else if(data->flags & LCD14_HFE) {
+ analog->mq = SR_MQ_GAIN;
+ analog->unit = SR_UNIT_UNITLESS;
+ }
+ else if(data->flags & LCD14_DIODE) {
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ analog->mqflags |= SR_MQFLAG_DIODE | SR_MQFLAG_DC;
+ }
+ else {
+ sr_warn("unable to identify measurement mode");
+ }
+
+ /* What other flags are associated with the data? */
+ if(data->flags & LCD14_HOLD) {
+ analog->mqflags |= SR_MQFLAG_HOLD;
+ }
+ if(data->flags & LCD14_AUTO) {
+ analog->mqflags |= SR_MQFLAG_AUTORANGE;
+ }
+ if(data->flags & LCD14_REL) {
+ analog->mqflags |= SR_MQFLAG_RELATIVE;
+ }
+
+ if (analog->mq != -1) {
+ /* Got a measurement. */
+ sr_spew("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(struct dev_context *devc, int fd)
+{
+ int len;
+ size_t i;
+ size_t offset = 0;
+ /* Try to get as much data as the buffer can hold */
+ len = DMM_BUFSIZE - devc->buflen;
+ len = serial_read(fd, devc->buf + devc->buflen, len);
+ if (len < 1) {
+ sr_err("serial port read error!");
+ return;
+ }
+ devc->buflen += len;
+
+ /* Now look for packets in that data */
+ while((devc->buflen - offset) >= LCD14_PACKET_SIZE)
+ {
+ lcd14_packet * packet = (void *)(devc->buf + offset);
+ lcd14_data data;
+ if( lcd14_is_packet_valid(packet, &data) )
+ {
+ lcd14_handle_packet(&data, devc);
+ offset += LCD14_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 lcd14_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;
+}
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * 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_HARDWARE_TEKPOWER_DMM_PROTOCOL_H
+#define LIBSIGROK_HARDWARE_TEKPOWER_DMM_PROTOCOL_H
+
+/* Message logging helpers with driver-specific prefix string. */
+#define DRIVER_LOG_DOMAIN "tekpower-dmm: "
+#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
+#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
+
+#define DMM_BUFSIZE 256
+
+/* Flags present in the packet */
+#define LCD14_AC (1<<23)
+#define LCD14_DC (1<<22)
+#define LCD14_AUTO (1<<21)
+#define LCD14_RS232 (1<<20)
+#define LCD14_MICRO (1<<19)
+#define LCD14_NANO (1<<18)
+#define LCD14_KILO (1<<17)
+#define LCD14_DIODE (1<<16)
+#define LCD14_MILLI (1<<15)
+#define LCD14_DUTY (1<<14)
+#define LCD14_MEGA (1<<13)
+#define LCD14_BEEP (1<<12)
+#define LCD14_FARAD (1<<11)
+#define LCD14_OHM (1<<10)
+#define LCD14_REL (1<< 9)
+#define LCD14_HOLD (1<< 8)
+#define LCD14_AMP (1<< 7)
+#define LCD14_VOLT (1<< 6)
+#define LCD14_HZ (1<< 5)
+#define LCD14_LOW_BATT (1<< 4)
+#define LCD14_HFE (1<< 3)
+#define LCD14_CELSIUS (1<< 2)
+#define LCD14_RSVD1 (1<< 1)
+#define LCD14_RSVD0 (0<< 0)
+
+/* mask to remove the decimal point from a digit */
+#define LCD14_DP_MASK (0x80)
+#define LCD14_D0_NEG LCD14_DP_MASK
+/* mask to remove the syncronization nibble */
+#define LCD14_SYNC_MASK (0xF0)
+
+/* What the LCD values represent */
+#define LCD14_LCD_0 0x7d
+#define LCD14_LCD_1 0x05
+#define LCD14_LCD_2 0x5b
+#define LCD14_LCD_3 0x1f
+#define LCD14_LCD_4 0x27
+#define LCD14_LCD_5 0x3e
+#define LCD14_LCD_6 0x7e
+#define LCD14_LCD_7 0x15
+#define LCD14_LCD_8 0x7f
+#define LCD14_LCD_9 0x3f
+
+
+#define LCD14_LCD_INVALID 0xff
+
+typedef struct {
+ uint8_t raw[14];
+} lcd14_packet;
+
+typedef struct {
+ uint8_t digit[4];
+ uint32_t flags;
+} lcd14_data;
+
+#define LCD14_PACKET_SIZE (sizeof(lcd14_packet))
+
+SR_PRIV gboolean lcd14_is_packet_valid(const lcd14_packet *packet,
+ lcd14_data *data);
+
+/* Private, per-device-instance driver context. */
+struct dev_context {
+ 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[DMM_BUFSIZE];
+ size_t bufoffset;
+ size_t buflen;
+};
+
+
+SR_PRIV int lcd14_receive_data(int fd, int revents, void *cb_data);
+
+#endif /* LIBSIGROK_HARDWARE_TEKPOWER_DMM_PROTOCOL_H */
#ifdef HAVE_HW_RADIOSHACK_DMM
extern SR_PRIV struct sr_dev_driver radioshackdmm_driver_info;
#endif
+#ifdef HAVE_HW_TEKPOWER_DMM
+extern SR_PRIV struct sr_dev_driver tekpower_driver_info;
+#endif
/** @endcond */
static struct sr_dev_driver *drivers_list[] = {
#endif
#ifdef HAVE_HW_RADIOSHACK_DMM
&radioshackdmm_driver_info,
+#endif
+#ifdef HAVE_HW_TEKPOWER_DMM
+ &tekpower_driver_info,
#endif
NULL,
};
projects / libsigrok.git / commitdiff