sr: Unfinished Mastech VA18B (DMM) support.

configure.ac

@@ -162,6 +162,16 @@ if test "x$HW_HANTEK_DSO" = "xyes"; then
 	AC_DEFINE(HAVE_HW_HANTEK_DSO, 1, [Hantek DSO support])
 fi
 
+AC_ARG_ENABLE(mastech-va18b,
+	      AC_HELP_STRING([--enable-mastech-va18b],
+	      [enable Mastech VA18B support [default=yes]]),
+	      [HW_MASTECH_VA18B="$enableval"],
+	      [HW_MASTECH_VA18B=yes])
+AM_CONDITIONAL(HW_MASTECH_VA18B, test x$HW_MASTECH_VA18B = xyes)
+if test "x$HW_MASTECH_VA18B" = "xyes"; then
+	AC_DEFINE(HAVE_HW_MASTECH_VA18B, 1, [Mastech VA18B support])
+fi
+
 # Checks for libraries.
 
 # This variable collects the pkg-config names of all detected libs.
@@ -276,6 +286,7 @@ AC_CONFIG_FILES([Makefile
 		 hardware/openbench-logic-sniffer/Makefile
 		 hardware/zeroplus-logic-cube/Makefile
 		 hardware/hantek-dso/Makefile
+		 hardware/mastech-va18b/Makefile
 		 input/Makefile
 		 output/Makefile
 		 output/text/Makefile
@@ -317,5 +328,6 @@ echo "  - Link MSO-19..................... $LA_LINK_MSO19"
 echo "  - Openbench Logic Sniffer......... $LA_OLS"
 echo "  - ZEROPLUS Logic Cube............. $LA_ZEROPLUS_LOGIC_CUBE"
 echo "  - Hantek DSO...................... $HW_HANTEK_DSO"
+echo "  - Mastech VA18B................... $HW_MASTECH_VA18B"
 echo
 

hardware/Makefile.am

@@ -27,7 +27,8 @@ SUBDIRS = \
 	link-mso19 \
 	openbench-logic-sniffer \
 	zeroplus-logic-cube \
-	hantek-dso
+	hantek-dso \
+	mastech-va18b
 
 noinst_LTLIBRARIES = libsigrokhardware.la
 
@@ -72,3 +73,7 @@ if HW_HANTEK_DSO
 libsigrokhardware_la_LIBADD += hantek-dso/libsigrokhw_hantek_dso.la
 endif
 
+if HW_MASTECH_VA18B
+libsigrokhardware_la_LIBADD += mastech-va18b/libsigrokhw_mastech_va18b.la
+endif
+

hardware/mastech-va18b/Makefile.am

@@ -0,0 +1,32 @@
+##
+## This file is part of the sigrok project.
+##
+## Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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
+##
+
+if HW_MASTECH_VA18B
+
+# Local lib, this is NOT meant to be installed!
+noinst_LTLIBRARIES = libsigrokhw_mastech_va18b.la
+
+libsigrokhw_mastech_va18b_la_SOURCES = \
+	api.c
+
+libsigrokhw_mastech_va18b_la_CFLAGS = \
+	-I$(top_srcdir)
+
+endif

hardware/mastech-va18b/api.c

@@ -0,0 +1,381 @@
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 <stdlib.h>
+#include "sigrok.h"
+#include "sigrok-internal.h"
+
+#define MIN_NUM_SAMPLES 1
+
+struct context {
+	uint64_t limit_samples;
+	uint64_t limit_msec; /* TODO: Implement. */
+	uint64_t num_samples;
+	void *session_dev_id;
+};
+
+static const int hwcaps[] = {
+	SR_HWCAP_OSCILLOSCOPE,
+	SR_HWCAP_LIMIT_SAMPLES,
+	// SR_HWCAP_LIMIT_MSEC,
+	// SR_HWCAP_CONTINUOUS,
+	0,
+};
+
+static const char *probe_names[] = {
+	"Probe",
+	NULL,
+};
+
+static GSList *dev_insts = NULL;
+
+/* Function prototypes. */
+static int hw_dev_acquisition_stop(int dev_index, void *cb_data);
+
+static int hw_init(const char *devinfo)
+{
+	struct sr_dev_inst *sdi;
+	struct context *ctx;
+	int devcnt = 0;
+
+	/* Avoid compiler warnings. */
+	(void)devinfo; /* TODO: This specifies the serial port to use. */
+
+	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
+		sr_err("va18b: %s: ctx malloc failed.", __func__);
+		return 0;
+	}
+
+	ctx->limit_samples = 0;
+	ctx->limit_msec = 0;
+	ctx->num_samples = 0;
+	ctx->session_dev_id = NULL;
+
+	if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_ACTIVE,
+				    "Mastech", "VA18B", ""))) {
+		sr_err("va18b: %s: sr_dev_inst_new returned NULL.", __func__);
+		return 0;
+	}
+
+	sdi->priv = ctx;
+	dev_insts = g_slist_append(dev_insts, sdi);
+
+	devcnt = 1;
+
+	return devcnt;
+}
+
+static int hw_dev_open(int dev_index)
+{
+	/* Avoid compiler warnings. */
+	(void)dev_index;
+
+	/* TODO. */
+
+	return SR_OK;
+}
+
+static int hw_dev_close(int dev_index)
+{
+	/* Avoid compiler warnings. */
+	(void)dev_index;
+
+	/* TODO. */
+
+	return SR_OK;
+}
+
+static int hw_cleanup(void)
+{
+	GSList *l;
+	struct sr_dev_inst *sdi;
+	struct context *ctx;
+
+	/* Properly close and free all devices. */
+	for (l = dev_insts; l; l = l->next) {
+		if (!(sdi = l->data)) {
+			/* Log error, but continue cleaning up the rest. */
+			sr_err("va18b: %s: sdi was NULL, continuing.",
+			       __func__);
+			continue;
+		}
+		if (!(ctx = sdi->priv)) {
+			/* Log error, but continue cleaning up the rest. */
+			sr_err("va18b: %s: sdi->priv was NULL, continuing.",
+			       __func__);
+			continue;
+		}
+
+		/* TODO. */
+
+		sr_dev_inst_free(sdi);
+	}
+
+	g_slist_free(dev_insts);
+	dev_insts = NULL;
+
+	return SR_OK;
+}
+
+static const void *hw_dev_info_get(int dev_index, int dev_info_id)
+{
+	struct sr_dev_inst *sdi;
+	struct context *ctx;
+	const void *info;
+	uint64_t tmp;
+	int tmpint;
+
+	if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
+		sr_err("va18b: %s: sdi was NULL.", __func__);
+		return NULL;
+	}
+
+	if (!(ctx = sdi->priv)) {
+		sr_err("va18b: %s: sdi->priv was NULL.", __func__);
+		return NULL;
+	}
+
+	sr_spew("va18b: %s: dev_index %d, dev_info_id %d.", __func__,
+		dev_index, dev_info_id);
+
+	switch (dev_info_id) {
+	case SR_DI_INST:
+		info = sdi;
+		sr_spew("va18b: %s: Returning sdi.", __func__);
+		break;
+	case SR_DI_NUM_PROBES:
+		tmpint = 1;
+		info = (int *)tmpint;
+		sr_spew("va18b: %s: Returning number of probes: 1.", __func__);
+		break;
+	case SR_DI_PROBE_NAMES:
+		info = probe_names;
+		sr_spew("va18b: %s: Returning probenames.", __func__);
+		break;
+	case SR_DI_CUR_SAMPLERATE:
+		/* FIXME */
+		tmp = 1;
+		info = (uint64_t *)&tmp;
+		sr_spew("va18b: %s: Returning samplerate: %" PRIu64 "Hz.",
+			__func__, tmp);
+		break;
+	default:
+		/* Unknown device info ID, return NULL. */
+		sr_err("va18b: %s: Unknown device info ID: %d.",
+		       __func__, dev_info_id);
+		info = NULL;
+		break;
+	}
+
+	return info;
+}
+
+static int hw_dev_status_get(int dev_index)
+{
+	struct sr_dev_inst *sdi;
+
+	if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
+		sr_err("va18b: %s: sdi was NULL, device not found.", __func__);
+		return SR_ST_NOT_FOUND;
+	}
+
+	sr_dbg("va18b: Returning status: %d.", sdi->status);
+
+	return sdi->status;
+}
+
+static const int *hw_hwcap_get_all(void)
+{
+	sr_spew("va18b: Returning list of device capabilities.");
+
+	return hwcaps;
+}
+
+static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
+{
+	struct sr_dev_inst *sdi;
+	struct context *ctx;
+
+	if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
+		sr_err("va18b: %s: sdi was NULL.", __func__);
+		return SR_ERR_BUG;
+	}
+
+	if (!(ctx = sdi->priv)) {
+		sr_err("va18b: %s: sdi->priv was NULL.", __func__);
+		return SR_ERR_BUG;
+	}
+
+	sr_spew("va18b: %s: dev_index %d, hwcap %d.", __func__,
+		dev_index, hwcap);
+
+	switch (hwcap) {
+	case SR_HWCAP_PROBECONFIG:
+		/* TODO: Required? */
+		break;
+	case SR_HWCAP_LIMIT_MSEC:
+		if (*(const uint64_t *)value == 0) {
+			sr_err("va18b: %s: LIMIT_MSEC can't be 0.", __func__);
+			return SR_ERR;
+		}
+		ctx->limit_msec = *(const uint64_t *)value;
+		sr_dbg("va18b: Setting LIMIT_MSEC to %" PRIu64 ".",
+		       ctx->limit_msec);
+		break;
+	case SR_HWCAP_LIMIT_SAMPLES:
+		if (*(const uint64_t *)value < MIN_NUM_SAMPLES) {
+			sr_err("va18b: %s: LIMIT_SAMPLES too small.", __func__);
+			return SR_ERR;
+		}
+		ctx->limit_samples = *(const uint64_t *)value;
+		sr_dbg("va18b: Setting LIMIT_SAMPLES to %" PRIu64 ".",
+		       ctx->limit_samples);
+		break;
+	default:
+		/* Unknown capability, return SR_ERR. */
+		sr_err("va18b: %s: Unknown capability: %d.", __func__, hwcap);
+		return SR_ERR;
+		break;
+	}
+
+	return SR_OK;
+}
+
+static int receive_data(int fd, int revents, void *cb_data)
+{
+	struct sr_dev_inst *sdi;
+	struct sr_datafeed_packet packet;
+	struct sr_datafeed_analog analog;
+	struct context *ctx;
+	int num_probes;
+
+	/* Avoid compiler warnings. */
+	(void)fd;
+	(void)revents;
+
+	if (!(sdi = cb_data)) {
+		sr_err("va18b: %s: cb_data was NULL.", __func__);
+		return FALSE;
+	}
+
+	if (!(ctx = sdi->priv)) {
+		sr_err("va18b: %s: sdi->priv was NULL.", __func__);
+		return FALSE;
+	}
+
+	sr_dbg("va18b: Sending SR_DF_ANALOG packet with 1 sample.");
+	/* TODO: timestamp. */
+	num_probes = 1;
+	packet.type = SR_DF_ANALOG;
+	packet.payload = &analog;
+	analog.num_samples = 1;
+	analog.mq = SR_MQ_VOLTAGE;
+	analog.unit = SR_UNIT_VOLT;
+	/* TODO: Check alloc return value. */
+	analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
+	analog.data[0] = rand() % 42; /* Transmit dummy data for now. */
+	sr_session_send(ctx->session_dev_id, &packet);
+
+	ctx->num_samples++;
+
+	/* Support for SR_HWCAP_LIMIT_SAMPLES. */
+	if (ctx->limit_samples > 0 && ctx->num_samples > ctx->limit_samples) {
+		hw_dev_acquisition_stop(0 /* FIXME? */, cb_data);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static int hw_dev_acquisition_start(int dev_index, void *cb_data)
+{
+	struct sr_datafeed_packet packet;
+	struct sr_datafeed_header header;
+	struct sr_datafeed_meta_analog meta;
+	struct sr_dev_inst *sdi;
+	struct context *ctx;
+
+	if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
+		sr_err("va18b: %s: sdi was NULL.", __func__);
+		return SR_ERR_BUG;
+	}
+
+	if (!(ctx = sdi->priv)) {
+		sr_err("va18b: %s: sdi->priv was NULL.", __func__);
+		return SR_ERR_BUG;
+	}
+
+	sr_dbg("va18b: Starting acquisition.");
+
+	ctx->session_dev_id = cb_data;
+
+	/* Send header packet to the session bus. */
+	sr_dbg("va18b: 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(ctx->session_dev_id, &packet);
+
+	/* Send metadata about the SR_DF_ANALOG packets to come. */
+	sr_dbg("va18b: Sending SR_DF_META_ANALOG.");
+	packet.type = SR_DF_META_ANALOG;
+	packet.payload = &meta;
+	meta.num_probes = 1;
+	sr_session_send(ctx->session_dev_id, &packet);
+
+	/* Hook up a dummy handler to receive data from the device. */
+	sr_source_add(-1, G_IO_IN, 0, receive_data, sdi);
+
+	return SR_OK;
+}
+
+static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
+{
+	struct sr_datafeed_packet packet;
+
+	/* Avoid compiler warnings. */
+	(void)dev_index;
+
+	sr_dbg("va18b: Stopping acquisition.");
+
+	/* Send end packet to the session bus. */
+	sr_dbg("va18b: Sending SR_DF_END.");
+	packet.type = SR_DF_END;
+	sr_session_send(cb_data, &packet);
+
+	return SR_OK;
+}
+
+SR_PRIV struct sr_dev_driver mastech_va18b_driver_info = {
+	.name = "mastech-va18b",
+	.longname = "Mastech VA18B",
+	.api_version = 1,
+	.init = hw_init,
+	.cleanup = hw_cleanup,
+	.dev_open = hw_dev_open,
+	.dev_close = hw_dev_close,
+	.dev_info_get = hw_dev_info_get,
+	.dev_status_get = hw_dev_status_get,
+	.hwcap_get_all = hw_hwcap_get_all,
+	.dev_config_set = hw_dev_config_set,
+	.dev_acquisition_start = hw_dev_acquisition_start,
+	.dev_acquisition_stop = hw_dev_acquisition_stop,
+};

hwdriver.c

@@ -75,6 +75,9 @@ extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 #ifdef HAVE_HW_HANTEK_DSO
 extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
 #endif
+#ifdef HAVE_HW_MASTECH_VA18B
+extern SR_PRIV struct sr_dev_driver mastech_va18b_driver_info;
+#endif
 
 static struct sr_dev_driver *drivers_list[] = {
 #ifdef HAVE_LA_DEMO
@@ -103,6 +106,9 @@ static struct sr_dev_driver *drivers_list[] = {
 #endif
 #ifdef HAVE_HW_HANTEK_DSO
 	&hantek_dso_driver_info,
+#endif
+#ifdef HAVE_HW_MASTECH_VA18B
+	&mastech_va18b_driver_info,
 #endif
 	NULL,
 };