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OLS: fix triggers, sample order, capture ratio

This commit is contained in:
Bert Vermeulen 2010-08-05 03:54:33 +02:00
parent 3245dfcb62
commit a803c0db4d
2 changed files with 136 additions and 81 deletions
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215
hardware/openbench-logic-sniffer/ols.c
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@ -104,9 +104,11 @@ static uint64_t limit_samples = 0;
* 0 means no pre-trigger data.
*/
static int capture_ratio = 0;
static int trigger_at = -1;
static uint32_t probe_mask = 0xffffffff;
static uint32_t trigger_mask[4] = { 0, 0, 0, 0 };
static uint32_t trigger_value[4] = { 0, 0, 0, 0 };
static int num_stages = 0;
static int send_shortcommand(int fd, uint8_t command)
{
@ -149,6 +151,7 @@ static int configure_probes(GSList *probes)
trigger_value[i] = 0;
}
num_stages = 0;
for (l = probes; l; l = l->next) {
probe = (struct probe *)l->data;
if (!probe->enabled)
@ -161,7 +164,7 @@ static int configure_probes(GSList *probes)
probe_bit = 1 << (probe->index - 1);
probe_mask |= probe_bit;
if (probe->trigger)
if (!probe->trigger)
continue;
/* Configure trigger mask and value. */
@ -178,20 +181,35 @@ static int configure_probes(GSList *probes)
*/
return SIGROK_ERR;
}
if (stage > num_stages)
num_stages = stage;
}
return SIGROK_OK;
}
static void byteswap(uint32_t * in)
static uint32_t reverse16(uint32_t in)
{
uint32_t out;
out = (*in & 0xff) << 8;
out |= (*in & 0xff00) >> 8;
out |= (*in & 0xff0000) << 8;
out |= (*in & 0xff000000) >> 8;
*in = out;
out = (in & 0xff) << 8;
out |= (in & 0xff00) >> 8;
out |= (in & 0xff0000) << 8;
out |= (in & 0xff000000) >> 8;
return out;
}
static uint32_t reverse32(uint32_t in)
{
uint32_t out;
out = (in & 0xff) << 24;
out |= (in & 0xff00) << 8;
out |= (in & 0xff0000) >> 8;
out |= (in & 0xff000000) >> 24;
return out;
}
static int hw_init(char *deviceinfo)
@ -412,18 +430,11 @@ static int set_configuration_samplerate(struct sigrok_device_instance *sdi,
flag_reg &= ~FLAG_DEMUX;
divider = (CLOCK_RATE / samplerate) - 1;
}
#ifdef _WIN32
// FIXME
// divider = htonl(divider);
#else
divider = htonl(divider);
#endif
g_message("setting samplerate to %" PRIu64 " Hz (divider %u, demux %s)",
samplerate, divider, flag_reg & FLAG_DEMUX ? "on" : "off");
samplerate, divider, flag_reg & FLAG_DEMUX ? "on" : "off");
if (send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER,
divider) != SIGROK_OK)
if (send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER, reverse32(divider)) != SIGROK_OK)
return SIGROK_ERR;
cur_samplerate = samplerate;
@ -442,23 +453,29 @@ static int hw_set_configuration(int device_index, int capability, void *value)
if (sdi->status != ST_ACTIVE)
return SIGROK_ERR;
if (capability == HWCAP_SAMPLERATE) {
switch (capability) {
case HWCAP_SAMPLERATE:
tmp_u64 = value;
ret = set_configuration_samplerate(sdi, *tmp_u64);
} else if (capability == HWCAP_PROBECONFIG) {
break;
case HWCAP_PROBECONFIG:
ret = configure_probes((GSList *) value);
} else if (capability == HWCAP_LIMIT_SAMPLES) {
break;
case HWCAP_LIMIT_SAMPLES:
tmp_u64 = value;
limit_samples = *tmp_u64;
ret = SIGROK_OK;
} else if (capability == HWCAP_CAPTURE_RATIO) {
capture_ratio = strtol(value, NULL, 10);
break;
case HWCAP_CAPTURE_RATIO:
tmp_u64 = value;
capture_ratio = *tmp_u64;
if (capture_ratio < 0 || capture_ratio > 100) {
capture_ratio = 0;
ret = SIGROK_ERR;
} else
ret = SIGROK_OK;
} else {
break;
default:
ret = SIGROK_ERR;
}
@ -472,7 +489,8 @@ static int receive_data(int fd, int revents, void *user_data)
static char last_sample[4] = { 0xff, 0xff, 0xff, 0xff };
static unsigned char sample[4] = { 0, 0, 0, 0 };
static unsigned char tmp_sample[4];
int count, buflen, num_channels, i, j;
static unsigned char *raw_sample_buf = NULL;
int count, buflen, num_channels, offset, i, j;
struct datafeed_packet packet;
unsigned char byte, *buffer;
@ -484,7 +502,10 @@ static int receive_data(int fd, int revents, void *user_data)
* finished. We'll double that to 30ms to be sure...
*/
source_remove(fd);
source_add(fd, G_IO_IN, 100, receive_data, user_data);
source_add(fd, G_IO_IN, 30, receive_data, user_data);
raw_sample_buf = malloc(limit_samples * 4);
/* fill with 1010... for debugging */
memset(raw_sample_buf, 0x82, limit_samples * 4);
}
num_channels = 0;
@ -499,7 +520,9 @@ static int receive_data(int fd, int revents, void *user_data)
return FALSE;
sample[num_bytes++] = byte;
// g_message("received byte 0x%.2x", byte);
if (num_bytes == num_channels) {
// g_message("received sample 0x%.*x", num_bytes * 2, (int) *sample);
/* Got a full sample. */
if (flag_reg & FLAG_RLE) {
/*
@ -514,8 +537,7 @@ static int receive_data(int fd, int revents, void *user_data)
buffer = g_malloc(count);
buflen = 0;
for (i = 0; i < count; i++) {
memcpy(buffer + buflen,
last_sample, 4);
memcpy(buffer + buflen, last_sample, 4);
buflen += 4;
}
} else {
@ -547,7 +569,7 @@ static int receive_data(int fd, int revents, void *user_data)
j = 0;
memset(tmp_sample, 0, 4);
for (i = 0; i < 4; i++) {
if ((flag_reg & (8 >> i)) == 0) {
if (((flag_reg >> 2) & (1 << i)) == 0) {
/*
* This channel group was
* enabled, copy from received
@ -557,13 +579,22 @@ static int receive_data(int fd, int revents, void *user_data)
}
}
memcpy(sample, tmp_sample, 4);
// g_message("full sample 0x%.8x", (int) *sample);
}
/* Send it all to the session bus. */
packet.type = DF_LOGIC32;
packet.length = buflen;
packet.payload = buffer;
session_bus(user_data, &packet);
/* the OLS sends its sample buffer backwards.
* store it in reverse order here, so we can dump
* this on the session bus later.
*/
offset = (limit_samples - num_transfers) * 4;
memcpy(raw_sample_buf + offset, sample, 4);
// /* Send it all to the session bus. */
// packet.type = DF_LOGIC32;
// packet.length = buflen;
// packet.payload = buffer;
// session_bus(user_data, &packet);
if (buffer == sample)
memcpy(last_sample, buffer, num_channels);
else
@ -576,7 +607,36 @@ static int receive_data(int fd, int revents, void *user_data)
/*
* This is the main loop telling us a timeout was reached, or
* we've acquired all the samples we asked for -- we're done.
* Send the (properly-ordered) buffer to the frontend.
*/
if (trigger_at != -1) {
/* a trigger was set up, so we need to tell the frontend
* about it.
*/
if (trigger_at > 0) {
/* there are pre-trigger samples, send those first */
packet.type = DF_LOGIC32;
packet.length = trigger_at * 4;
packet.payload = raw_sample_buf;
session_bus(user_data, &packet);
}
packet.type = DF_TRIGGER;
packet.length = 0;
session_bus(user_data, &packet);
packet.type = DF_LOGIC32;
packet.length = (limit_samples * 4) - (trigger_at * 4);
packet.payload = raw_sample_buf + trigger_at * 4;
session_bus(user_data, &packet);
} else {
packet.type = DF_LOGIC32;
packet.length = limit_samples * 4;
packet.payload = raw_sample_buf;
session_bus(user_data, &packet);
}
free(raw_sample_buf);
#ifndef _WIN32
/* TODO: Move to serial.c? */
tcflush(fd, TCIOFLUSH);
@ -596,6 +656,7 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
struct datafeed_packet *packet;
struct datafeed_header *header;
struct sigrok_device_instance *sdi;
uint32_t trigger_config[4];
uint32_t data;
uint16_t readcount, delaycount;
uint8_t changrp_mask;
@ -606,52 +667,54 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
if (sdi->status != ST_ACTIVE)
return SIGROK_ERR;
readcount = limit_samples / 4;
memset(trigger_config, 0, 16);
trigger_config[num_stages-1] |= 0x08;
if (trigger_mask[0]) {
/* Trigger masks */
delaycount = readcount * (1 - capture_ratio / 100.0);
trigger_at = (readcount - delaycount) * 4 - num_stages;
g_message("ta %d", trigger_at);
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
trigger_mask[0]) != SIGROK_OK)
reverse32(trigger_mask[0])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1,
trigger_mask[1]) != SIGROK_OK)
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
reverse32(trigger_value[0])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2,
trigger_mask[2]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3,
trigger_mask[3]) != SIGROK_OK)
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
trigger_config[0]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
trigger_value[0]) != SIGROK_OK)
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1,
reverse32(trigger_mask[1])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1,
trigger_value[1]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2,
trigger_value[2]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3,
trigger_value[3]) != SIGROK_OK)
return SIGROK_ERR;
/* Trigger configuration */
/*
* TODO: The start flag should only be on the last used
* stage I think...
*/
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
0x00000008) != SIGROK_OK)
reverse32(trigger_value[1])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1,
0x00000000) != SIGROK_OK)
trigger_config[1]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2,
reverse32(trigger_mask[2])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2,
reverse32(trigger_value[2])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2,
0x00000000) != SIGROK_OK)
trigger_config[2]) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3,
reverse32(trigger_mask[3])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3,
reverse32(trigger_value[3])) != SIGROK_OK)
return SIGROK_ERR;
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3,
0x00000000) != SIGROK_OK)
trigger_config[3]) != SIGROK_OK)
return SIGROK_ERR;
delaycount = limit_samples / 4 * (capture_ratio / 100);
} else {
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
trigger_mask[0]) != SIGROK_OK)
@ -662,41 +725,33 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
0x00000008) != SIGROK_OK)
return SIGROK_ERR;
delaycount = limit_samples / 4;
delaycount = readcount;
}
set_configuration_samplerate(sdi, cur_samplerate);
/* Send sample limit and pre/post-trigger capture ratio. */
readcount = limit_samples / 4;
if (flag_reg & FLAG_DEMUX) {
data = (delaycount - 8) & 0xfff8 << 13;
data |= (readcount - 4) & 0xffff;
} else {
flag_reg |= FLAG_FILTER;
data = (readcount - 1) << 16;
data |= (delaycount - 1);
}
/* TODO: htonl()? */
byteswap(&data);
if (send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE,
data) != SIGROK_OK)
data = ((readcount - 1) & 0xffff) << 16;
data |= (delaycount - 1) & 0xffff;
if (send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, reverse16(data)) != SIGROK_OK)
return SIGROK_ERR;
/*
* Enable/disable channel groups in the flag register according to the
* probe mask. The register stores them backwards, hence shift right
* from 1000.
* probe mask.
*/
changrp_mask = 0;
for (i = 0; i < 4; i++) {
if (probe_mask & (0xff << (i * 8)))
changrp_mask |= (8 >> i);
changrp_mask |= (1 << i);
}
g_message("changrp_mask 0x%.2x", changrp_mask);
/* The flag register wants them here, and 1 means "disable channel". */
flag_reg |= ~(changrp_mask << 2) & 0x3c;
g_message("flag_reg 0x%.2x", flag_reg & 0x3c);
flag_reg |= FLAG_FILTER;
data = flag_reg << 24;
if (send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SIGROK_OK)
return SIGROK_ERR;

2
sigrok.h
View File

@ -242,7 +242,7 @@ enum {
HWCAP_LOGIC_ANALYZER,
HWCAP_SAMPLERATE, /* Change samplerate */
HWCAP_PROBECONFIG, /* Configure probe mask */
HWCAP_CAPTURE_RATIO, /* Set pre-trigger / post-trigger ratio */
HWCAP_CAPTURE_RATIO, /* Set pre/post-trigger capture ratio */
HWCAP_LIMIT_MSEC, /* Set a time limit for sample acquisition */
HWCAP_LIMIT_SAMPLES, /* Set a limit on number of samples */
};