static int get_cfg(const struct sr_dev_inst *sdi, char *cmd, char *reply) { int len; if (rigol_ds1xx2_send(sdi, cmd) != SR_OK) return SR_ERR; if ((len = serial_read(sdi->conn, reply, 255)) < 0) return SR_ERR; reply[len] = '\0'; sr_spew("Received '%s'.", reply); return SR_OK; }
static int set_cfg(const struct sr_dev_inst *sdi, const char *format, ...) { va_list args; char buf[256]; va_start(args, format); vsnprintf(buf, 255, format, args); va_end(args); if (rigol_ds1xx2_send(sdi, buf) != SR_OK) return SR_ERR; /* When setting a bunch of parameters in a row, the DS1052E scrambles * some of them unless there is at least 100ms delay in between. */ sr_spew("delay %dms", 100); g_usleep(100000); return SR_OK; }
SR_PRIV int rigol_ds1xx2_receive(int fd, int revents, void *cb_data) { struct sr_dev_inst *sdi; struct sr_serial_dev_inst *serial; struct dev_context *devc; struct sr_datafeed_packet packet; struct sr_datafeed_analog analog; struct sr_datafeed_logic logic; unsigned char buf[DIGITAL_WAVEFORM_SIZE]; double vdiv, offset; float data[ANALOG_WAVEFORM_SIZE]; int len, i, waveform_size; struct sr_probe *probe; (void)fd; if (!(sdi = cb_data)) return TRUE; if (!(devc = sdi->priv)) return TRUE; serial = sdi->conn; if (revents == G_IO_IN) { probe = devc->channel_frame; waveform_size = probe->type == SR_PROBE_ANALOG ? ANALOG_WAVEFORM_SIZE : DIGITAL_WAVEFORM_SIZE; len = serial_read(serial, buf, waveform_size - devc->num_frame_bytes); sr_dbg("Received %d bytes.", len); if (len == -1) return TRUE; if (devc->num_frame_bytes == 0) { /* Start of a new frame. */ packet.type = SR_DF_FRAME_BEGIN; sr_session_send(sdi, &packet); } if (probe->type == SR_PROBE_ANALOG) { for (i = 0; i < len; i++) { vdiv = devc->vdiv[probe->index]; offset = devc->vert_offset[probe->index]; data[i] = vdiv / 25.6 * (128 - buf[i]) - offset; } analog.probes = g_slist_append(NULL, probe); analog.num_samples = len; analog.data = data; analog.mq = SR_MQ_VOLTAGE; analog.unit = SR_UNIT_VOLT; analog.mqflags = 0; packet.type = SR_DF_ANALOG; packet.payload = &analog; sr_session_send(cb_data, &packet); g_slist_free(analog.probes); if (len != ANALOG_WAVEFORM_SIZE) /* Don't have the whole frame yet. */ return TRUE; } else { logic.length = len - 10; logic.unitsize = 2; logic.data = buf + 10; packet.type = SR_DF_LOGIC; packet.payload = &logic; sr_session_send(cb_data, &packet); if (len != DIGITAL_WAVEFORM_SIZE) /* Don't have the whole frame yet. */ return TRUE; } /* End of the frame. */ packet.type = SR_DF_FRAME_END; sr_session_send(sdi, &packet); devc->num_frame_bytes = 0; if (devc->enabled_analog_probes && devc->channel_frame == devc->enabled_analog_probes->data && devc->enabled_analog_probes->next != NULL) { /* We got the frame for the first analog channel, but * there's a second analog channel. */ devc->channel_frame = devc->enabled_analog_probes->next->data; rigol_ds1xx2_send(sdi, ":WAV:DATA? CHAN%c", devc->channel_frame->name[2]); } else { /* Done with both analog channels in this frame. */ if (devc->enabled_digital_probes && devc->channel_frame != devc->enabled_digital_probes->data) { /* Now we need to get the digital data. */ devc->channel_frame = devc->enabled_digital_probes->data; rigol_ds1xx2_send(sdi, ":WAV:DATA? DIG"); } else if (++devc->num_frames == devc->limit_frames) { /* End of last frame. */ packet.type = SR_DF_END; sr_session_send(sdi, &packet); sdi->driver->dev_acquisition_stop(sdi, cb_data); } else { /* Get the next frame, starting with the first analog channel. */ if (devc->enabled_analog_probes) { devc->channel_frame = devc->enabled_analog_probes->data; rigol_ds1xx2_send(sdi, ":WAV:DATA? CHAN%c", devc->channel_frame->name[2]); } else { devc->channel_frame = devc->enabled_digital_probes->data; rigol_ds1xx2_send(sdi, ":WAV:DATA? DIG"); } } } } return TRUE; }
static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) { struct sr_serial_dev_inst *serial; struct dev_context *devc; struct sr_probe *probe; GSList *l; char cmd[256]; if (sdi->status != SR_ST_ACTIVE) return SR_ERR_DEV_CLOSED; serial = sdi->conn; devc = sdi->priv; for (l = sdi->probes; l; l = l->next) { probe = l->data; sr_dbg("handling probe %s", probe->name); if (probe->type == SR_PROBE_ANALOG) { if (probe->enabled) devc->enabled_analog_probes = g_slist_append( devc->enabled_analog_probes, probe); if (probe->enabled != devc->analog_channels[probe->index]) { /* Enabled channel is currently disabled, or vice versa. */ sprintf(cmd, ":CHAN%d:DISP %s", probe->index + 1, probe->enabled ? "ON" : "OFF"); if (rigol_ds1xx2_send(sdi, cmd) != SR_OK) return SR_ERR; } } else if (probe->type == SR_PROBE_LOGIC) { if (probe->enabled) devc->enabled_digital_probes = g_slist_append( devc->enabled_digital_probes, probe); if (probe->enabled != devc->digital_channels[probe->index]) { /* Enabled channel is currently disabled, or vice versa. */ sprintf(cmd, ":DIG%d:TURN %s", probe->index, probe->enabled ? "ON" : "OFF"); if (rigol_ds1xx2_send(sdi, cmd) != SR_OK) return SR_ERR; } } } if (!devc->enabled_analog_probes && !devc->enabled_digital_probes) return SR_ERR; sr_source_add(serial->fd, G_IO_IN, 50, rigol_ds1xx2_receive, (void *)sdi); /* Send header packet to the session bus. */ std_session_send_df_header(cb_data, LOG_PREFIX); /* Fetch the first frame. */ if (devc->enabled_analog_probes) { devc->channel_frame = devc->enabled_analog_probes->data; if (rigol_ds1xx2_send(sdi, ":WAV:DATA? CHAN%d", devc->channel_frame->index + 1) != SR_OK) return SR_ERR; } else { devc->channel_frame = devc->enabled_digital_probes->data; if (rigol_ds1xx2_send(sdi, ":WAV:DATA? DIG") != SR_OK) return SR_ERR; } devc->num_frame_bytes = 0; return SR_OK; }