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rigol-ds: Unify code for counting expected incoming bytes.

This commit is contained in:
Martin Ling 2013-12-27 18:56:59 +01:00 committed by Bert Vermeulen
parent 677f85d00b
commit f80a0bf232
1 changed files with 17 additions and 19 deletions
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36
hardware/rigol-ds/protocol.c
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@ -405,7 +405,7 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
struct sr_datafeed_analog analog;
struct sr_datafeed_logic logic;
double vdiv, offset;
int len, i, waveform_size, vref;
int len, i, vref;
struct sr_probe *probe;
(void)fd;
@ -448,8 +448,12 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
default:
sr_err("BUG: Unknown event target encountered");
}
}
probe = devc->channel;
if (devc->num_block_bytes == 0) {
if (devc->num_block_bytes == 0) {
if (devc->model->protocol == PROTOCOL_IEEE488_2) {
sr_dbg("New block header expected");
if (sr_scpi_send(sdi->conn, ":WAV:DATA?") != SR_OK)
return TRUE;
@ -463,30 +467,26 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
* appear eventually.
*/
if (devc->data_source == DATA_SOURCE_LIVE
&& (unsigned)len < devc->num_frame_samples) {
&& (unsigned)len < devc->num_frame_samples) {
sr_dbg("Discarding short data block");
sr_scpi_read(scpi, (char *)devc->buffer, len + 1);
return TRUE;
}
devc->num_block_bytes = len;
devc->num_block_read = 0;
}
}
probe = devc->channel;
if (devc->model->protocol == PROTOCOL_IEEE488_2) {
len = devc->num_block_bytes - devc->num_block_read;
len = sr_scpi_read(scpi, (char *)devc->buffer,
len < ACQ_BUFFER_SIZE ? len : ACQ_BUFFER_SIZE);
} else {
waveform_size = probe->type == SR_PROBE_ANALOG ?
} else {
devc->num_block_bytes = probe->type == SR_PROBE_ANALOG ?
(devc->model->series == RIGOL_VS5000 ?
VS5000_ANALOG_LIVE_WAVEFORM_SIZE :
DS1000_ANALOG_LIVE_WAVEFORM_SIZE) :
DIGITAL_WAVEFORM_SIZE;
len = sr_scpi_read(scpi, (char *)devc->buffer,
waveform_size - devc->num_frame_samples);
}
devc->num_block_read = 0;
}
len = devc->num_block_bytes - devc->num_block_read;
len = sr_scpi_read(scpi, (char *)devc->buffer,
len < ACQ_BUFFER_SIZE ? len : ACQ_BUFFER_SIZE);
sr_dbg("Received %d bytes.", len);
if (len == -1)
return TRUE;
@ -556,9 +556,7 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
/* End of the frame. */
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
if (devc->model->protocol == PROTOCOL_LEGACY)
devc->num_frame_samples = 0;
else {
if (devc->model->protocol == PROTOCOL_IEEE488_2) {
/* Signal end of data download to scope */
if (devc->data_source != DATA_SOURCE_LIVE)
/*