#include "protocol.h"
+static const int32_t hwopts[] = {
+ SR_CONF_CONN,
+ SR_CONF_SERIALCOMM,
+};
+
+static const int32_t devopts[] = {
+ SR_CONF_POWER_SUPPLY,
+ SR_CONF_LIMIT_SAMPLES,
+ SR_CONF_LIMIT_MSEC,
+ SR_CONF_CONTINUOUS,
+ SR_CONF_OUTPUT_VOLTAGE,
+ SR_CONF_OUTPUT_CURRENT,
+};
+
+/* Note: All models have one power supply output only. */
+static struct hcs_model models[] = {
+ { MANSON_HCS_3200, "HCS-3200", { 1, 18, 0.1 }, { 0, 20, 0.01 } },
+ { MANSON_HCS_3202, "HCS-3202", { 1, 36, 0.1 }, { 0, 10, 0.01 } },
+ { MANSON_HCS_3204, "HCS-3204", { 1, 60, 0.1 }, { 0, 5, 0.01 } },
+ { 0, NULL, { 0, 0, 0 }, { 0, 0, 0 }, },
+};
+
SR_PRIV struct sr_dev_driver manson_hcs_3xxx_driver_info;
static struct sr_dev_driver *di = &manson_hcs_3xxx_driver_info;
+static int dev_clear(void)
+{
+ return std_dev_clear(di, NULL);
+}
+
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
static GSList *scan(GSList *options)
{
+ int i, model_id;
struct drv_context *drvc;
- GSList *devices;
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ struct sr_config *src;
+ struct sr_channel *ch;
+ GSList *devices, *l;
+ const char *conn, *serialcomm;
+ struct sr_serial_dev_inst *serial;
+ char reply[50], **tokens;
- (void)options;
-
- devices = NULL;
drvc = di->priv;
drvc->instances = NULL;
+ devices = NULL;
+ conn = NULL;
+ serialcomm = NULL;
+
+ for (l = options; l; l = l->next) {
+ src = l->data;
+ switch (src->key) {
+ case SR_CONF_CONN:
+ conn = g_variant_get_string(src->data, NULL);
+ break;
+ case SR_CONF_SERIALCOMM:
+ serialcomm = g_variant_get_string(src->data, NULL);
+ break;
+ default:
+ sr_err("Unknown option %d, skipping.", src->key);
+ break;
+ }
+ }
- return devices;
-}
+ if (!conn)
+ return NULL;
+ if (!serialcomm)
+ serialcomm = "9600/8n1";
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
+ if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
+ return NULL;
-static int dev_clear(void)
-{
- return std_dev_clear(di, NULL);
-}
+ if (serial_open(serial, SERIAL_RDWR) != SR_OK)
+ return NULL;
-static int dev_open(struct sr_dev_inst *sdi)
-{
- (void)sdi;
+ serial_flush(serial);
- sdi->status = SR_ST_ACTIVE;
+ sr_info("Probing serial port %s.", conn);
- return SR_OK;
-}
+ /* Get the device model. */
+ memset(&reply, 0, sizeof(reply));
+ serial_write_blocking(serial, "GMOD\r", 5);
+ serial_read_blocking(serial, &reply, 8);
+ tokens = g_strsplit((const gchar *)&reply, "\r", 2);
-static int dev_close(struct sr_dev_inst *sdi)
-{
- (void)sdi;
+ model_id = -1;
+ for (i = 0; models[i].name != NULL; i++) {
+ if (!strcmp(models[i].name + 4, tokens[0]))
+ model_id = i;
+ }
+ if (model_id < 0) {
+ sr_err("Unknown model '%s' detected, aborting.", tokens[0]);
+ return NULL;
+ }
+
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Manson",
+ models[model_id].name, NULL))) {
+ sr_err("Failed to create device instance.");
+ return NULL;
+ }
- sdi->status = SR_ST_INACTIVE;
+ g_strfreev(tokens);
- return SR_OK;
+ sdi->inst_type = SR_INST_SERIAL;
+ sdi->conn = serial;
+ sdi->driver = di;
+
+ if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "CH1"))) {
+ sr_err("Failed to create channel.");
+ return NULL;
+ }
+ sdi->channels = g_slist_append(sdi->channels, ch);
+
+ devc = g_malloc0(sizeof(struct dev_context));
+ devc->model = &models[model_id];
+
+ sdi->priv = devc;
+
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+
+ serial_close(serial);
+ if (!devices)
+ sr_serial_dev_inst_free(serial);
+
+ return devices;
+}
+
+static GSList *dev_list(void)
+{
+ return ((struct drv_context *)(di->priv))->instances;
}
static int cleanup(void)
static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
- int ret;
+ struct dev_context *devc;
- (void)sdi;
- (void)data;
(void)cg;
- ret = SR_OK;
+ if (!sdi)
+ return SR_ERR_ARG;
+
+ devc = sdi->priv;
+
switch (key) {
+ case SR_CONF_LIMIT_SAMPLES:
+ *data = g_variant_new_uint64(devc->limit_samples);
+ break;
+ case SR_CONF_LIMIT_MSEC:
+ *data = g_variant_new_uint64(devc->limit_msec);
+ break;
+ case SR_CONF_OUTPUT_VOLTAGE:
+ *data = g_variant_new_double(devc->voltage);
+ break;
+ case SR_CONF_OUTPUT_CURRENT:
+ *data = g_variant_new_double(devc->current);
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
- int ret;
+ struct dev_context *devc;
- (void)data;
(void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- ret = SR_OK;
+ devc = sdi->priv;
+
switch (key) {
+ 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:
- ret = SR_ERR_NA;
+ return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
- int ret;
-
(void)sdi;
- (void)data;
(void)cg;
- ret = SR_OK;
switch (key) {
+ case SR_CONF_SCAN_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
+ break;
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
- (void)sdi;
- (void)cb_data;
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
+ devc = sdi->priv;
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(cb_data, LOG_PREFIX);
+
+ devc->starttime = g_get_monotonic_time();
+ devc->num_samples = 0;
+ devc->reply_pending = FALSE;
+ devc->req_sent_at = 0;
+
+ /* Poll every 10ms, or whenever some data comes in. */
+ serial = sdi->conn;
+ serial_source_add(serial, G_IO_IN, 10, hcs_receive_data, (void *)sdi);
+
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- return SR_OK;
+ return std_serial_dev_acquisition_stop(sdi, cb_data,
+ std_serial_dev_close, sdi->conn, LOG_PREFIX);
}
SR_PRIV struct sr_dev_driver manson_hcs_3xxx_driver_info = {
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
+ .dev_open = std_serial_dev_open,
+ .dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
#include "protocol.h"
-SR_PRIV int manson_hcs_3xxx_receive_data(int fd, int revents, void *cb_data)
+#define REQ_TIMEOUT_MS 500
+
+static int send_cmd(struct sr_serial_dev_inst *serial, const char *cmd)
+{
+ int ret;
+ char *cmd_esc;
+
+ cmd_esc = g_strescape(cmd, NULL);
+ sr_dbg("Sending '%s'.", cmd_esc);
+
+ if ((ret = serial_write_blocking(serial, cmd, strlen(cmd))) < 0) {
+ sr_err("Error sending command: %d.", ret);
+ g_free(cmd_esc);
+ return ret;
+ }
+
+ g_free(cmd_esc);
+
+ return ret;
+}
+
+static int parse_volt_curr_mode(struct sr_dev_inst *sdi, char **tokens)
+{
+ char *str;
+ double val;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ /* Bytes 0-3: Voltage. */
+ str = g_strndup(tokens[0], 4);
+ val = g_ascii_strtod(str, NULL) / 100;
+ devc->voltage = val;
+ g_free(str);
+
+ /* Bytes 4-7: Current. */
+ str = g_strndup((tokens[0] + 4), 4);
+ val = g_ascii_strtod(str, NULL) / 100;
+ devc->current = val;
+ g_free(str);
+
+ /* Byte 8: Mode ('0' means CV, '1' means CC). */
+ devc->cc_mode = (tokens[0][8] == '1');
+
+ return SR_OK;
+}
+
+static void send_sample(struct sr_dev_inst *sdi)
{
- const struct sr_dev_inst *sdi;
struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+
+ devc = sdi->priv;
+
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.channels = sdi->channels;
+ analog.num_samples = 1;
+
+ analog.mq = SR_MQ_VOLTAGE;
+ analog.unit = SR_UNIT_VOLT;
+ analog.mqflags = SR_MQFLAG_DC;
+ analog.data = &devc->voltage;
+ sr_session_send(sdi, &packet);
+
+ analog.mq = SR_MQ_CURRENT;
+ analog.unit = SR_UNIT_AMPERE;
+ analog.mqflags = 0;
+ analog.data = &devc->current;
+ sr_session_send(sdi, &packet);
+
+ devc->num_samples++;
+}
+
+static int parse_reply(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ char *reply_esc, **tokens;
+
+ devc = sdi->priv;
+
+ reply_esc = g_strescape(devc->buf, NULL);
+ sr_dbg("Received '%s'.", reply_esc);
+
+ tokens = g_strsplit(devc->buf, "\r", 0);
+
+ if (parse_volt_curr_mode(sdi, tokens) < 0)
+ return SR_ERR;
+ send_sample(sdi);
+
+ g_free(reply_esc);
+ g_strfreev(tokens);
+
+ return SR_OK;
+}
+
+static int handle_new_data(struct sr_dev_inst *sdi)
+{
+ int len;
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
+
+ devc = sdi->priv;
+ serial = sdi->conn;
+
+ len = serial_read(serial, devc->buf + devc->buflen, 1);
+ if (len < 1)
+ return SR_ERR;
+
+ devc->buflen += len;
+ devc->buf[devc->buflen] = '\0';
+
+ /* Wait until we received an "OK\r" (among other bytes). */
+ if (!g_str_has_suffix(devc->buf, "OK\r"))
+ return SR_OK;
+
+ parse_reply(sdi);
+
+ devc->buf[0] = '\0';
+ devc->buflen = 0;
+
+ devc->reply_pending = FALSE;
+
+ return SR_OK;
+}
+
+SR_PRIV int hcs_receive_data(int fd, int revents, void *cb_data)
+{
+ struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
+ int64_t t, elapsed_us;
(void)fd;
if (!(devc = sdi->priv))
return TRUE;
+ serial = sdi->conn;
+
if (revents == G_IO_IN) {
+ /* New data arrived. */
+ handle_new_data(sdi);
+ } else {
+ /* Timeout. */
+ }
+
+ if (devc->limit_samples && (devc->num_samples >= devc->limit_samples)) {
+ sr_info("Requested number of samples reached.");
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ return TRUE;
+ }
+
+ if (devc->limit_msec) {
+ t = (g_get_monotonic_time() - devc->starttime) / 1000;
+ if (t > (int64_t)devc->limit_msec) {
+ sr_info("Requested time limit reached.");
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ return TRUE;
+ }
+ }
+
+ /* Request next packet, if required. */
+ if (sdi->status == SR_ST_ACTIVE) {
+ if (devc->reply_pending) {
+ elapsed_us = g_get_monotonic_time() - devc->req_sent_at;
+ if (elapsed_us > (REQ_TIMEOUT_MS * 1000))
+ devc->reply_pending = FALSE;
+ return TRUE;
+ }
+
+ /* Send command to get voltage, current, and mode (CC or CV). */
+ if (send_cmd(serial, "GETD\r") < 0)
+ return TRUE;
+
+ devc->req_sent_at = g_get_monotonic_time();
+ devc->reply_pending = TRUE;
}
return TRUE;
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