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rigol-ds1xx2: fix handling of partial frames.

This commit is contained in:
Martin Ling 2013-04-14 01:58:35 +01:00 committed by Bert Vermeulen
parent 4c7aca66de
commit ee7e9bee5d
3 changed files with 10 additions and 4 deletions
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2
hardware/rigol-ds1xx2/api.c
View File

@ -552,6 +552,8 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
devc->channel_frame->name[2]) != SR_OK)
return SR_ERR;
devc->num_frame_bytes = 0;
return SR_OK;
}

10
hardware/rigol-ds1xx2/protocol.c
View File

@ -47,12 +47,12 @@ SR_PRIV int rigol_ds1xx2_receive(int fd, int revents, void *cb_data)
return TRUE;
if (revents == G_IO_IN) {
len = read(fd, buf, WAVEFORM_SIZE);
len = read(fd, buf, WAVEFORM_SIZE - devc->num_frame_bytes);
sr_dbg("Received %d bytes.", len);
if (len == -1)
return TRUE;
if (devc->num_frame_samples == 0) {
if (devc->num_frame_bytes == 0) {
/* Start of a new frame. */
packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
@ -75,13 +75,17 @@ SR_PRIV int rigol_ds1xx2_receive(int fd, int revents, void *cb_data)
sr_session_send(cb_data, &packet);
g_slist_free(analog.probes);
if (len != WAVEFORM_SIZE)
devc->num_frame_bytes += len;
if (devc->num_frame_bytes != 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->channel_frame == devc->enabled_probes->data
&& devc->enabled_probes->next != NULL) {

2
hardware/rigol-ds1xx2/protocol.h
View File

@ -57,7 +57,7 @@ struct dev_context {
char *device;
int fd;
uint64_t num_frames;
uint64_t num_frame_samples;
uint64_t num_frame_bytes;
struct sr_probe *channel_frame;
};