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rigol-ds: Unify partial read handling.

This commit is contained in:
Martin Ling 2013-12-27 19:50:48 +01:00 committed by Bert Vermeulen
parent f80a0bf232
commit 48460c6f3e
1 changed files with 25 additions and 27 deletions
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52
hardware/rigol-ds/protocol.c
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@ -491,6 +491,8 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
if (len == -1)
return TRUE;
devc->num_block_read += len;
if (devc->num_frame_samples == 0) {
/* Start of a new frame. */
packet.type = SR_DF_FRAME_BEGIN;
@ -498,8 +500,6 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
}
if (probe->type == SR_PROBE_ANALOG) {
if (devc->model->protocol == PROTOCOL_IEEE488_2)
devc->num_block_read += len;
vref = devc->vert_reference[probe->index];
vdiv = devc->vdiv[probe->index] / 25.6;
offset = devc->vert_offset[probe->index];
@ -519,27 +519,6 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
packet.payload = &analog;
sr_session_send(cb_data, &packet);
g_slist_free(analog.probes);
if (devc->model->protocol == PROTOCOL_IEEE488_2) {
if (devc->num_block_read == devc->num_block_bytes) {
sr_dbg("Block has been completed");
/* Discard the terminating linefeed and prepare for
possible next block */
sr_scpi_read(scpi, (char *)devc->buffer, 1);
devc->num_block_bytes = 0;
if (devc->data_source != DATA_SOURCE_LIVE)
rigol_ds_set_wait_event(devc, WAIT_BLOCK);
} else
sr_dbg("%d of %d block bytes read", devc->num_block_read, devc->num_block_bytes);
}
devc->num_frame_samples += len;
if (devc->num_frame_samples < devc->analog_frame_size)
/* Don't have the whole frame yet. */
return TRUE;
sr_dbg("Frame completed, %d samples", devc->num_frame_samples);
} else {
logic.length = len - 10;
logic.unitsize = 2;
@ -547,13 +526,32 @@ SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
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;
}
if (devc->num_block_read == devc->num_block_bytes) {
sr_dbg("Block has been completed");
if (devc->model->protocol == PROTOCOL_IEEE488_2) {
/* Discard the terminating linefeed and prepare for
possible next block */
sr_scpi_read(scpi, (char *)devc->buffer, 1);
devc->num_block_bytes = 0;
if (devc->data_source != DATA_SOURCE_LIVE)
rigol_ds_set_wait_event(devc, WAIT_BLOCK);
}
devc->num_block_read = 0;
} else {
sr_dbg("%d of %d block bytes read", devc->num_block_read, devc->num_block_bytes);
}
devc->num_frame_samples += len;
if (devc->num_frame_samples < (probe->type == SR_PROBE_ANALOG ?
devc->analog_frame_size : DIGITAL_WAVEFORM_SIZE))
/* Don't have the whole frame yet. */
return TRUE;
/* End of the frame. */
sr_dbg("Frame completed, %d samples", devc->num_frame_samples);
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
if (devc->model->protocol == PROTOCOL_IEEE488_2) {