* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <string.h>
+#include <stdarg.h>
#include "protocol.h"
+SR_PRIV const char *scpi_cmd_get(const struct sr_dev_inst *sdi, int command)
+{
+ struct dev_context *devc;
+ unsigned int i;
+ const char *cmd;
+
+ devc = sdi->priv;
+ cmd = NULL;
+ for (i = 0; i < devc->device->num_commands; i++) {
+ if (devc->device->commands[i].command == command) {
+ cmd = devc->device->commands[i].string;
+ break;
+ }
+ }
+
+ return cmd;
+}
+
+SR_PRIV int scpi_cmd(const struct sr_dev_inst *sdi, int command, ...)
+{
+ struct sr_scpi_dev_inst *scpi;
+ va_list args;
+ int ret;
+ const char *cmd;
+
+ if (!(cmd = scpi_cmd_get(sdi, command))) {
+ /* Device does not implement this command, that's OK. */
+ return SR_OK_CONTINUE;
+ }
+
+ scpi = sdi->conn;
+ va_start(args, command);
+ ret = sr_scpi_send_variadic(scpi, cmd, args);
+ va_end(args);
+
+ return ret;
+}
+
+SR_PRIV int scpi_cmd_resp(const struct sr_dev_inst *sdi, GVariant **gvar,
+ const GVariantType *gvtype, int command, ...)
+{
+ struct sr_scpi_dev_inst *scpi;
+ va_list args;
+ double d;
+ int ret;
+ char *s;
+ const char *cmd;
+
+ if (!(cmd = scpi_cmd_get(sdi, command))) {
+ /* Device does not implement this command, that's OK. */
+ return SR_OK_CONTINUE;
+ }
+
+ scpi = sdi->conn;
+ va_start(args, command);
+ ret = sr_scpi_send_variadic(scpi, cmd, args);
+ va_end(args);
+ if (ret != SR_OK)
+ return ret;
+
+ /* Non-standard data type responses. */
+ if (command == SCPI_CMD_GET_OUTPUT_REGULATION) {
+ /*
+ * The Rigol DP800 series return CV/CC/UR, Philips PM2800
+ * return VOLT/CURR. We always return a GVariant string in
+ * the Rigol notation.
+ */
+ if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
+ return ret;
+ if (!strcmp(s, "CV") || !strcmp(s, "VOLT")) {
+ *gvar = g_variant_new_string("CV");
+ } else if (!strcmp(s, "CC") || !strcmp(s, "CURR")) {
+ *gvar = g_variant_new_string("CC");
+ } else if (!strcmp(s, "UR")) {
+ *gvar = g_variant_new_string("UR");
+ } else {
+ sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
+ ret = SR_ERR_DATA;
+ }
+ g_free(s);
+ } else {
+ /* Straight SCPI getters to GVariant types. */
+ if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_BOOLEAN)) {
+ if ((ret = sr_scpi_get_string(scpi, NULL, &s)) != SR_OK)
+ return ret;
+ if (!strcasecmp(s, "ON") || !strcasecmp(s, "1") || !strcasecmp(s, "YES"))
+ *gvar = g_variant_new_boolean(TRUE);
+ else if (!strcasecmp(s, "OFF") || !strcasecmp(s, "0") || !strcasecmp(s, "NO"))
+ *gvar = g_variant_new_boolean(FALSE);
+ else
+ ret = SR_ERR;
+ g_free(s);
+ } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_DOUBLE)) {
+ if ((ret = sr_scpi_get_double(scpi, NULL, &d)) == SR_OK)
+ *gvar = g_variant_new_double(d);
+ } if (g_variant_type_equal(gvtype, G_VARIANT_TYPE_STRING)) {
+ if ((ret = sr_scpi_get_string(scpi, NULL, &s)) == SR_OK)
+ *gvar = g_variant_new_string(s);
+ }
+ }
+
+ return ret;
+}
+
+SR_PRIV int select_channel(const struct sr_dev_inst *sdi, struct sr_channel *ch)
+{
+ struct dev_context *devc;
+ struct pps_channel *cur_pch, *new_pch;
+ int ret;
+
+ if (g_slist_length(sdi->channels) == 1)
+ return SR_OK;
+
+ devc = sdi->priv;
+ if (ch == devc->cur_channel)
+ return SR_OK;
+
+ new_pch = ch->priv;
+ if (devc->cur_channel) {
+ cur_pch = devc->cur_channel->priv;
+ if (cur_pch->hw_output_idx == new_pch->hw_output_idx) {
+ /* Same underlying output channel. */
+ devc->cur_channel = ch;
+ return SR_OK;
+ }
+ }
+
+ if ((ret = scpi_cmd(sdi, SCPI_CMD_SELECT_CHANNEL, new_pch->hwname)) == SR_OK)
+ devc->cur_channel = ch;
+
+ return ret;
+}
+
+SR_PRIV struct sr_channel *next_enabled_channel(const struct sr_dev_inst *sdi,
+ struct sr_channel *cur_channel)
+{
+ struct sr_channel *next_channel;
+ GSList *l;
+
+ next_channel = cur_channel;
+ do {
+ l = g_slist_find(sdi->channels, next_channel);
+ if (l && l->next)
+ next_channel = l->next->data;
+ else
+ next_channel = sdi->channels->data;
+ } while (!next_channel->enabled);
+
+ return next_channel;
+}
+
SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data)
{
- const struct sr_dev_inst *sdi;
struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ const struct sr_dev_inst *sdi;
+ struct sr_channel *next_channel;
+ struct sr_scpi_dev_inst *scpi;
+ struct pps_channel *pch;
+ float f;
+ int cmd;
(void)fd;
+ (void)revents;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
- if (revents == G_IO_IN) {
- /* TODO */
+ scpi = sdi->conn;
+
+ /* Retrieve requested value for this state. */
+ if (sr_scpi_get_float(scpi, NULL, &f) == SR_OK) {
+ pch = devc->cur_channel->priv;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.channels = g_slist_append(NULL, devc->cur_channel);
+ analog.num_samples = 1;
+ analog.mq = pch->mq;
+ if (pch->mq == SR_MQ_VOLTAGE)
+ analog.unit = SR_UNIT_VOLT;
+ else if (pch->mq == SR_MQ_CURRENT)
+ analog.unit = SR_UNIT_AMPERE;
+ else if (pch->mq == SR_MQ_POWER)
+ analog.unit = SR_UNIT_WATT;
+ analog.mqflags = SR_MQFLAG_DC;
+ analog.data = &f;
+ sr_session_send(sdi, &packet);
+ g_slist_free(analog.channels);
}
+ if (g_slist_length(sdi->channels) > 1) {
+ next_channel = next_enabled_channel(sdi, devc->cur_channel);
+ if (select_channel(sdi, next_channel) != SR_OK) {
+ sr_err("Failed to select channel %s", next_channel->name);
+ return FALSE;
+ }
+ }
+
+ pch = devc->cur_channel->priv;
+ if (pch->mq == SR_MQ_VOLTAGE)
+ cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
+ else if (pch->mq == SR_MQ_CURRENT)
+ cmd = SCPI_CMD_GET_MEAS_CURRENT;
+ else if (pch->mq == SR_MQ_POWER)
+ cmd = SCPI_CMD_GET_MEAS_POWER;
+ else
+ return SR_ERR;
+ scpi_cmd(sdi, cmd);
+
return TRUE;
}
projects / libsigrok.git / blobdiff