--- /dev/null
+/*
+ * 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,
+};
projects / libsigrok.git / commitdiff