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rigol-ds: Don't run rigol_ds_block_wait() code unless supported.

This commit is contained in:
Martin Ling 2014-01-22 08:15:12 +00:00 committed by Bert Vermeulen
parent aff00e4088
commit 4472867a9f
1 changed files with 22 additions and 19 deletions
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41
hardware/rigol-ds/protocol.c
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@ -261,29 +261,32 @@ static int rigol_ds_block_wait(const struct sr_dev_inst *sdi)
if (!(devc = sdi->priv))
return SR_ERR;
start = time(NULL);
if (devc->model->series->protocol >= PROTOCOL_V3) {
do {
if (time(NULL) - start >= 3) {
sr_dbg("Timeout waiting for data block");
return SR_ERR_TIMEOUT;
}
start = time(NULL);
/*
* The scope copies data really slowly from sample
* memory to its output buffer, so try not to bother
* it too much with SCPI requests but don't wait too
* long for short sample frame sizes.
*/
g_usleep(devc->analog_frame_size < 15000 ? 100000 : 1000000);
do {
if (time(NULL) - start >= 3) {
sr_dbg("Timeout waiting for data block");
return SR_ERR_TIMEOUT;
}
/* "READ,nnnn" (still working) or "IDLE,nnnn" (finished) */
if (sr_scpi_get_string(sdi->conn, ":WAV:STAT?", &buf) != SR_OK)
return SR_ERR;
/*
* The scope copies data really slowly from sample
* memory to its output buffer, so try not to bother
* it too much with SCPI requests but don't wait too
* long for short sample frame sizes.
*/
g_usleep(devc->analog_frame_size < 15000 ? 100000 : 1000000);
if (parse_int(buf + 5, &len) != SR_OK)
return SR_ERR;
} while (buf[0] == 'R' && len < 1000000);
/* "READ,nnnn" (still working) or "IDLE,nnnn" (finished) */
if (sr_scpi_get_string(sdi->conn, ":WAV:STAT?", &buf) != SR_OK)
return SR_ERR;
if (parse_int(buf + 5, &len) != SR_OK)
return SR_ERR;
} while (buf[0] == 'R' && len < 1000000);
}
rigol_ds_set_wait_event(devc, WAIT_NONE);