* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
+#include <string.h>
+#include <strings.h>
+#include <stdarg.h>
+#include "scpi.h"
#include "protocol.h"
+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, devc->device->commands, SCPI_CMD_SELECT_CHANNEL,
+ new_pch->hwname)) >= 0)
+ devc->cur_channel = ch;
+
+ return ret;
+}
+
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;
+ struct sr_analog_encoding encoding;
+ struct sr_analog_meaning meaning;
+ struct sr_analog_spec spec;
+ const struct sr_dev_inst *sdi;
+ struct sr_channel *next_channel;
+ struct sr_scpi_dev_inst *scpi;
+ struct pps_channel *pch;
+ const struct channel_spec *ch_spec;
+ 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;
+ ch_spec = &devc->device->channels[pch->hw_output_idx];
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ /* Note: digits/spec_digits will be overridden later. */
+ sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
+ analog.meaning->channels = g_slist_append(NULL, devc->cur_channel);
+ analog.num_samples = 1;
+ analog.meaning->mq = pch->mq;
+ if (pch->mq == SR_MQ_VOLTAGE) {
+ analog.meaning->unit = SR_UNIT_VOLT;
+ analog.encoding->digits = ch_spec->voltage[4];
+ analog.spec->spec_digits = ch_spec->voltage[3];
+ } else if (pch->mq == SR_MQ_CURRENT) {
+ analog.meaning->unit = SR_UNIT_AMPERE;
+ analog.encoding->digits = ch_spec->current[4];
+ analog.spec->spec_digits = ch_spec->current[3];
+ } else if (pch->mq == SR_MQ_POWER) {
+ analog.meaning->unit = SR_UNIT_WATT;
+ analog.encoding->digits = ch_spec->power[4];
+ analog.spec->spec_digits = ch_spec->power[3];
+ }
+ analog.meaning->mqflags = SR_MQFLAG_DC;
+ analog.data = &f;
+ sr_session_send(sdi, &packet);
+ g_slist_free(analog.meaning->channels);
+ }
+
+ if (g_slist_length(sdi->channels) > 1) {
+ next_channel = sr_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_FREQUENCY)
+ cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
+ 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, devc->device->commands, cmd);
+
return TRUE;
}