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saleae logic: fix triggers after style changes

This commit is contained in:
Bert Vermeulen 2010-07-18 21:57:27 +02:00
parent c4fffe1e96
commit b5698bd71e
1 changed files with 48 additions and 55 deletions
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103
hardware/saleae-logic/saleae-logic.c
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@ -536,59 +536,6 @@ static int receive_data(int fd, int revents, void *user_data)
return TRUE; return TRUE;
} }
static void trigger_helper(int i, unsigned char *cur_buf,
struct datafeed_packet *packet, void *user_data,
int *trigger_offset)
{
if ((cur_buf[i] & trigger_mask[trigger_stage])
== trigger_value[trigger_stage]) {
/* Match on this trigger stage. */
trigger_buffer[trigger_stage] = cur_buf[i];
trigger_stage++;
if (trigger_stage == NUM_TRIGGER_STAGES
|| trigger_mask[trigger_stage] == 0) {
/* Match on all trigger stages, we're done. */
*trigger_offset = i + 1;
/*
* TODO: Send pre-trigger buffer to session bus.
* Tell the frontend we hit the trigger here.
*/
packet->type = DF_TRIGGER;
packet->length = 0;
session_bus(user_data, packet);
/*
* Send the samples that triggered it, since we're
* skipping past them.
*/
packet->type = DF_LOGIC8;
packet->length = trigger_stage;
packet->payload = trigger_buffer;
session_bus(user_data, packet);
// break; // FIXME???
trigger_stage = TRIGGER_FIRED;
}
return;
}
/*
* We had a match before, but not in the next sample. However, we may
* have a match on this stage in the next bit -- trigger on 0001 will
* fail on seeing 00001, so we need to go back to stage 0 -- but at
* the next sample from the one that matched originally, which the
* counter increment at the end of the loop takes care of.
*/
if (trigger_stage > 0) {
i -= trigger_stage;
if (i < -1)
i = -1; /* Oops, went back past this buffer. */
/* Reset trigger stage. */
trigger_stage = 0;
}
}
void receive_transfer(struct libusb_transfer *transfer) void receive_transfer(struct libusb_transfer *transfer)
{ {
static int num_samples = 0; static int num_samples = 0;
@ -646,8 +593,54 @@ void receive_transfer(struct libusb_transfer *transfer)
trigger_offset = 0; trigger_offset = 0;
if (trigger_stage >= 0) { if (trigger_stage >= 0) {
for (i = 0; i < cur_buflen; i++) { for (i = 0; i < cur_buflen; i++) {
trigger_helper(i, cur_buf, &packet, user_data,
&trigger_offset); if ((cur_buf[i] & trigger_mask[trigger_stage]) == trigger_value[trigger_stage]) {
/* Match on this trigger stage. */
trigger_buffer[trigger_stage] = cur_buf[i];
trigger_stage++;
if (trigger_stage == NUM_TRIGGER_STAGES || trigger_mask[trigger_stage] == 0) {
/* Match on all trigger stages, we're done. */
trigger_offset = i + 1;
/*
* TODO: Send pre-trigger buffer to session bus.
* Tell the frontend we hit the trigger here.
*/
packet.type = DF_TRIGGER;
packet.length = 0;
session_bus(user_data, &packet);
/*
* Send the samples that triggered it, since we're
* skipping past them.
*/
packet.type = DF_LOGIC8;
packet.length = trigger_stage;
packet.payload = trigger_buffer;
session_bus(user_data, &packet);
trigger_stage = TRIGGER_FIRED;
break;
}
return;
}
/*
* We had a match before, but not in the next sample. However, we may
* have a match on this stage in the next bit -- trigger on 0001 will
* fail on seeing 00001, so we need to go back to stage 0 -- but at
* the next sample from the one that matched originally, which the
* counter increment at the end of the loop takes care of.
*/
if (trigger_stage > 0) {
i -= trigger_stage;
if (i < -1)
i = -1; /* Oops, went back past this buffer. */
/* Reset trigger stage. */
trigger_stage = 0;
}
} }
} }