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Sigma: Small cleanups.

This commit is contained in:
Håvard Espeland 2010-05-01 14:22:22 +02:00
parent e65679b15e
commit eec5275e2f
1 changed files with 25 additions and 22 deletions
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47
hardware/asix-sigma/asix-sigma.c
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@ -49,7 +49,7 @@ static int num_probes = 0;
static int samples_per_event = 0;
static int capture_ratio = 50;
/* Single-pin trigger support */
/* Single-pin trigger support. */
static uint8_t triggerpin = 1;
static uint8_t triggerfall = 0;
@ -80,7 +80,6 @@ static int capabilities[] = {
HWCAP_CAPTURE_RATIO,
HWCAP_PROBECONFIG,
/* These are really implemented in the driver, not the hardware. */
HWCAP_LIMIT_MSEC,
0,
};
@ -101,8 +100,7 @@ static uint8_t logic_mode_start[] = {
0x2a, 0x3a, 0x40, 0x03, 0x20, 0x38,
};
static const char *firmware_files[] =
{
static const char *firmware_files[] = {
"asix-sigma-50.fw", /* 50 MHz, supports 8 bit fractions */
"asix-sigma-100.fw", /* 100 MHz */
"asix-sigma-200.fw", /* 200 MHz */
@ -510,13 +508,19 @@ static int set_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerat
return ret;
}
/* Only trigger on single pin supported (in 100-200 MHz modes) */
/* Only trigger on single pin supported (in 100-200 MHz modes). */
static int configure_probes(GSList *probes)
{
struct probe *probe;
GSList *l;
int trigger_set = 0;
if (cur_samplerate <= MHZ(50)) {
g_warning("Trigger support only implemented "
"in 100 and 200 MHz mode.");
return SIGROK_ERR;
}
for (l = probes; l; l = l->next) {
probe = (struct probe *)l->data;
@ -524,13 +528,12 @@ static int configure_probes(GSList *probes)
continue;
if (trigger_set) {
g_warning("Asix Sigma only supports a single pin trigger"
" in 100 and 200 MHz mode.");
g_warning("Asix Sigma only supports a single pin trigger "
"in 100 and 200 MHz mode.");
return SIGROK_ERR;
}
/* Found trigger */
/* Found trigger. */
if (probe->trigger[0] == 'f')
triggerfall = 1;
else
@ -650,11 +653,11 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts,
uint16_t cur_sample;
int triggerts = -1;
/* Find in which cluster the trigger occured */
/* Find in which cluster the trigger occured. */
if (triggerpos != -1)
triggerts = (triggerpos / 7);
/* For each ts */
/* For each ts. */
for (i = 0; i < 64; ++i) {
ts = *(uint16_t *) &buf[i * 16];
tsdiff = ts - *lastts;
@ -705,7 +708,7 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts,
*lastsample = samples[n - 1];
/* Send data up to trigger point (if triggered) */
/* Send data up to trigger point (if triggered). */
sent = 0;
if (i == triggerts) {
/*
@ -731,7 +734,7 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts,
session_bus(user_data, &packet);
}
/* Send rest of the chunk to sigrok */
/* Send rest of the chunk to sigrok. */
tosend = n - sent;
packet.type = DF_LOGIC16;
@ -780,7 +783,7 @@ static int receive_data(int fd, int revents, void *user_data)
/* Get the current position. */
sigma_read_pos(&stoppos, &triggerpos);
/* Check if trigger has fired */
/* Check if trigger has fired. */
modestatus = sigma_get_register(READ_MODE);
if (modestatus & 0x20) {
triggerchunk = triggerpos / 512;
@ -814,7 +817,7 @@ static int receive_data(int fd, int revents, void *user_data)
curchunk += newchunks;
}
/* End of data */
/* End of data. */
packet.type = DF_END;
packet.length = 0;
session_bus(user_data, &packet);
@ -843,24 +846,24 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
if (cur_firmware == -1)
set_samplerate(sdi, MHZ(50));
/* Enter trigger programming mode */
/* Enter trigger programming mode. */
sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20);
/* 100 and 200 MHz mode */
/* 100 and 200 MHz mode. */
if (cur_samplerate >= MHZ(100)) {
sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81);
triggerselect = (1 << LEDSEL1) | (triggerfall << 3) |
(triggerpin & 0x7);
/* All other modes */
/* All other modes. */
} else if (cur_samplerate <= MHZ(50)) {
sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20);
triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0);
}
/* Setup trigger in and out pins to default values */
/* Setup trigger in and out pins to default values. */
memset(&triggerinout_conf, 0, sizeof(struct triggerinout));
triggerinout_conf.trgout_bytrigger = 1;
triggerinout_conf.trgout_enable = 1;
@ -869,7 +872,7 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
(uint8_t *) &triggerinout_conf,
sizeof(struct triggerinout));
/* Go back to normal mode */
/* Go back to normal mode. */
sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect);
/* Set clock select register. */
@ -882,7 +885,7 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
else {
/*
* 50 MHz mode (or fraction thereof). Any fraction down to
* 50 MHz / 256 can be used, but is not suppoted by sigrok API.
* 50 MHz / 256 can be used, but is not supported by sigrok API.
*/
frac = MHZ(50) / cur_samplerate - 1;
@ -898,7 +901,7 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
/* Setup maximum post trigger time. */
sigma_set_register(WRITE_POST_TRIGGER, (capture_ratio * 256) / 100);
/* Start acqusition (software trigger start). */
/* Start acqusition. */
gettimeofday(&start_tv, 0);
sigma_set_register(WRITE_MODE, 0x0d);