serial-dmm, metex14: add support for multiple channels per DMM

[libsigrok.git] / src / hardware / serial-dmm / protocol.c

diff --git a/src/hardware/serial-dmm/protocol.c b/src/hardware/serial-dmm/protocol.c
index 9d3bc916271cb6e9fc0bc0cd09328f56ecde8862..e5f50ff7a1de7bf3587d755a68bc770d9480f0f5 100644 (file)
--- a/src/hardware/serial-dmm/protocol.c
+++ b/src/hardware/serial-dmm/protocol.c
@@ -49,31 +49,42 @@ static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
        struct sr_analog_meaning meaning;
        struct sr_analog_spec spec;
        struct dev_context *devc;
+       gboolean sent_sample;
+       size_t ch_idx;
 
        dmm = (struct dmm_info *)sdi->driver;
 
        log_dmm_packet(buf);
        devc = sdi->priv;
 
-       /* Note: digits/spec_digits will be overridden by the DMM parsers. */
-       sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
-
-       analog.meaning->channels = sdi->channels;
-       analog.num_samples = 1;
-       analog.meaning->mq = 0;
-
-       dmm->packet_parse(buf, &floatval, &analog, info);
-       analog.data = &floatval;
-
-       /* If this DMM needs additional handling, call the resp. function. */
-       if (dmm->dmm_details)
-               dmm->dmm_details(&analog, info);
+       sent_sample = FALSE;
+       memset(info, 0, dmm->info_size);
+       for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
+               /* Note: digits/spec_digits will be overridden by the DMM parsers. */
+               sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
+
+               analog.meaning->channels =
+                       g_slist_append(NULL, g_slist_nth_data(sdi->channels, ch_idx));
+               analog.num_samples = 1;
+               analog.meaning->mq = 0;
+
+               dmm->packet_parse(buf, &floatval, &analog, info);
+               analog.data = &floatval;
+
+               /* If this DMM needs additional handling, call the resp. function. */
+               if (dmm->dmm_details)
+                       dmm->dmm_details(&analog, info);
+
+               if (analog.meaning->mq != 0) {
+                       /* Got a measurement. */
+                       packet.type = SR_DF_ANALOG;
+                       packet.payload = &analog;
+                       sr_session_send(sdi, &packet);
+                       sent_sample = TRUE;
+               }
+       }
 
-       if (analog.meaning->mq != 0) {
-               /* Got a measurement. */
-               packet.type = SR_DF_ANALOG;
-               packet.payload = &analog;
-               sr_session_send(sdi, &packet);
+       if (sent_sample) {
                sr_sw_limits_update_samples_read(&devc->limits, 1);
        }
 }