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dslogic: Implement trigger functionality 

This commit implements DSLogic trigger functionality.

The following triggers are working:

 - trigger on rising edge
 - trigger on falling edge
 - trigger on any edge
 - trigger on logic one
 - trigger on logic zero

Pre-trigger capture ratio is also working.

Signed-off-by: Diego Asanza <f.asanza@gmail.com>
Tested-by: Andrew Bradford <andrew@bradfordembedded.com>
This commit is contained in:
Diego Asanza 2016-04-16 12:45:27 +02:00 committed by Uwe Hermann
parent f18e0db3b8
commit 4237fbcaac
5 changed files with 65 additions and 39 deletions
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6
src/hardware/fx2lafw/api.c
View File

@ -664,7 +664,7 @@ static int start_transfers(const struct sr_dev_inst *sdi)
devc->acq_aborted = FALSE;
devc->empty_transfer_count = 0;
if ((trigger = sr_session_trigger_get(sdi->session))) {
if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
int pre_trigger_samples = 0;
if (devc->limit_samples > 0)
pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
@ -741,11 +741,11 @@ static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer
} else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
&& transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
tpos = (struct dslogic_trigger_pos *)transfer->buffer;
sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
sr_info("tpos real_pos %d ram_saddr %d", tpos->real_pos, tpos->ram_saddr);
devc->trigger_pos = tpos->real_pos;
g_free(tpos);
start_transfers(sdi);
}
libusb_free_transfer(transfer);
}

63
src/hardware/fx2lafw/dslogic.c
View File

@ -165,14 +165,13 @@ static int dslogic_set_trigger(const struct sr_dev_inst *sdi,
struct sr_trigger *trigger;
struct sr_trigger_stage *stage;
struct sr_trigger_match *match;
struct dev_context *devc;
devc = sdi->priv;
const GSList *l, *m;
int channelbit, i = 0;
uint16_t v16;
devc = sdi->priv;
devc->trigger_en = FALSE;
cfg->trig_mask0[0] = 0xffff;
cfg->trig_mask1[0] = 0xffff;
@ -188,8 +187,33 @@ static int dslogic_set_trigger(const struct sr_dev_inst *sdi,
cfg->trig_count0[0] = 0;
cfg->trig_count1[0] = 0;
if (!(trigger = sr_session_trigger_get(sdi->session)))
cfg->trig_pos = 0;
cfg->trig_sda = 0;
cfg->trig_glb = 0;
cfg->trig_adp = cfg->count - cfg->trig_pos - 1;
for (i = 1; i < 16; i++) {
cfg->trig_mask0[i] = 0xff;
cfg->trig_mask1[i] = 0xff;
cfg->trig_value0[i] = 0;
cfg->trig_value1[i] = 0;
cfg->trig_edge0[i] = 0;
cfg->trig_edge1[i] = 0;
cfg->trig_count0[i] = 0;
cfg->trig_count1[i] = 0;
cfg->trig_logic0[i] = 2;
cfg->trig_logic1[i] = 2;
}
cfg->trig_pos = (uint32_t)(devc->capture_ratio / 100.0 * devc->limit_samples);
sr_dbg("pos: %d", cfg->trig_pos);
sr_dbg("configuring trigger");
if (!(trigger = sr_session_trigger_get(sdi->session))){
sr_dbg("No session trigger found");
return SR_OK;
}
for (l = trigger->stages; l; l = l->next) {
stage = l->data;
@ -199,7 +223,6 @@ static int dslogic_set_trigger(const struct sr_dev_inst *sdi,
/* Ignore disabled channels with a trigger. */
continue;
channelbit = 1 << (match->channel->index);
devc->trigger_en = TRUE; /* Triggered. */
/* Simple trigger support (event). */
if (match->match == SR_TRIGGER_ONE) {
cfg->trig_mask0[0] &= ~channelbit;
@ -221,34 +244,19 @@ static int dslogic_set_trigger(const struct sr_dev_inst *sdi,
cfg->trig_value1[0] |= channelbit;
cfg->trig_edge0[0] |= channelbit;
cfg->trig_edge1[0] |= channelbit;
} else if (match->match == SR_TRIGGER_EDGE){
} else if(match->match == SR_TRIGGER_EDGE){
cfg->trig_edge0[0] |= channelbit;
cfg->trig_edge1[0] |= channelbit;
}
}
}
if (devc->trigger_en) {
for (i = 1; i < 16; i++) {
cfg->trig_mask0[i] = 0xff;
cfg->trig_mask1[i] = 0xff;
cfg->trig_value0[i] = 0;
cfg->trig_value1[i] = 0;
cfg->trig_edge0[i] = 0;
cfg->trig_edge1[i] = 0;
cfg->trig_count0[i] = 0;
cfg->trig_count1[i] = 0;
cfg->trig_logic0[i] = 2;
cfg->trig_logic1[i] = 2;
}
v16 = RL16(&cfg->mode);
v16 |= 1 << 0;
WL16(&cfg->mode, v16);
}
v16 = RL16(&cfg->mode);
v16 |= 1 << 0;
WL16(&cfg->mode, v16);
return SR_OK;
}
SR_PRIV int dslogic_fpga_configure(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
@ -319,9 +327,8 @@ SR_PRIV int dslogic_fpga_configure(const struct sr_dev_inst *sdi)
v16 = 1 << 14;
else if (devc->dslogic_mode == DS_OP_LOOPBACK_TEST)
v16 = 1 << 13;
//if (devc->dslogic_external_clock)
// v16 |= 1 << 1;
//v16 |= 1 << 0;
if (devc->dslogic_external_clock)
v16 |= 1 << 1;
WL16(&cfg.mode, v16);
v32 = ceil(SR_MHZ(100) * 1.0 / devc->cur_samplerate);
WL32(&cfg.divider, v32);

3
src/hardware/fx2lafw/dslogic.h
View File

@ -55,7 +55,8 @@ struct dslogic_mode {
struct dslogic_trigger_pos {
uint32_t real_pos;
uint32_t ram_saddr;
uint8_t first_block[504];
uint32_t remain_cnt;
uint8_t first_block[500];
};
/*

30
src/hardware/fx2lafw/protocol.c
View File

@ -306,7 +306,6 @@ SR_PRIV struct dev_context *fx2lafw_dev_new(void)
devc->limit_samples = 0;
devc->capture_ratio = 0;
devc->sample_wide = FALSE;
devc->trigger_en = FALSE;
devc->stl = NULL;
return devc;
@ -455,6 +454,7 @@ SR_PRIV void LIBUSB_CALL fx2lafw_receive_transfer(struct libusb_transfer *transf
struct sr_dev_inst *sdi;
struct dev_context *devc;
gboolean packet_has_error = FALSE;
struct sr_datafeed_packet packet;
unsigned int num_samples;
int trigger_offset, cur_sample_count, unitsize;
int pre_trigger_samples;
@ -507,8 +507,6 @@ SR_PRIV void LIBUSB_CALL fx2lafw_receive_transfer(struct libusb_transfer *transf
} else {
devc->empty_transfer_count = 0;
}
if (devc->trigger_en)
devc->trigger_fired = TRUE;
if (devc->trigger_fired) {
if (!devc->limit_samples || devc->sent_samples < devc->limit_samples) {
/* Send the incoming transfer to the session bus. */
@ -517,9 +515,29 @@ SR_PRIV void LIBUSB_CALL fx2lafw_receive_transfer(struct libusb_transfer *transf
else
num_samples = cur_sample_count;
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer,
num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
if(devc->dslogic && devc->trigger_pos > devc->sent_samples
&& devc->trigger_pos <= devc->sent_samples + num_samples){
/* dslogic trigger in this block. Send trigger position */
trigger_offset = devc->trigger_pos - devc->sent_samples;
/* pre-trigger samples */
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer,
trigger_offset * unitsize, unitsize);
devc->sent_samples += trigger_offset;
/* trigger position */
devc->trigger_pos = 0;
packet.type = SR_DF_TRIGGER;
packet.payload = NULL;
sr_session_send(sdi, &packet);
/* post trigger samples */
num_samples -= trigger_offset;
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer
+ trigger_offset * unitsize, num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
}else{
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer,
num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
}
}
} else {
trigger_offset = soft_trigger_logic_check(devc->stl,

2
src/hardware/fx2lafw/protocol.h
View File

@ -133,8 +133,8 @@ struct dev_context {
/* Is this a DSLogic? */
gboolean dslogic;
uint16_t dslogic_mode;
uint32_t trigger_pos;
int dslogic_external_clock;
gboolean trigger_en;
};
SR_PRIV int fx2lafw_command_start_acquisition(const struct sr_dev_inst *sdi);