X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=hardware%2Fasix-sigma%2Fasix-sigma.c;h=cac386200f12a488f68a1ce4c371c6c7a3362e99;hb=917e0e71d53cb0a0ac7965cb4f36791b14f7e5ff;hp=6efa266f1f0ae8c54dbb40eda1c35ec9c205a676;hpb=edca2c5c2261ef4d6862d97e6d28d5a1c148a2f1;p=libsigrok.git diff --git a/hardware/asix-sigma/asix-sigma.c b/hardware/asix-sigma/asix-sigma.c index 6efa266f..cac38620 100644 --- a/hardware/asix-sigma/asix-sigma.c +++ b/hardware/asix-sigma/asix-sigma.c @@ -35,6 +35,7 @@ #define USB_VENDOR_NAME "ASIX" #define USB_MODEL_NAME "SIGMA" #define USB_MODEL_VERSION "" +#define TRIGGER_TYPES "rf10" static GSList *device_instances = NULL; @@ -46,10 +47,16 @@ static struct timeval start_tv; static int cur_firmware = -1; static int num_probes = 0; static int samples_per_event = 0; +static int capture_ratio = 50; +static struct sigma_trigger trigger; +static struct sigma_state sigma; static uint64_t supported_samplerates[] = { + KHZ(200), KHZ(250), + KHZ(500), MHZ(1), + MHZ(5), MHZ(10), MHZ(25), MHZ(50), @@ -59,7 +66,7 @@ static uint64_t supported_samplerates[] = { }; static struct samplerates samplerates = { - KHZ(250), + KHZ(200), MHZ(200), 0, supported_samplerates, @@ -68,8 +75,9 @@ static struct samplerates samplerates = { static int capabilities[] = { HWCAP_LOGIC_ANALYZER, HWCAP_SAMPLERATE, + HWCAP_CAPTURE_RATIO, + HWCAP_PROBECONFIG, - /* These are really implemented in the driver, not the hardware. */ HWCAP_LIMIT_MSEC, 0, }; @@ -90,16 +98,17 @@ 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 */ - "asix-sigma-50sync.fw", /* Asynchronous sampling */ + "asix-sigma-50sync.fw", /* Synchronous clock from pin */ "asix-sigma-phasor.fw", /* Frequency counter */ }; -static int sigma_read(void* buf, size_t size) +static void hw_stop_acquisition(int device_index, gpointer session_device_id); + +static int sigma_read(void *buf, size_t size) { int ret; @@ -195,6 +204,13 @@ static int sigma_read_pos(uint32_t *stoppos, uint32_t *triggerpos) *triggerpos = result[0] | (result[1] << 8) | (result[2] << 16); *stoppos = result[3] | (result[4] << 8) | (result[5] << 16); + /* Not really sure why this must be done, but according to spec. */ + if ((--*stoppos & 0x1ff) == 0x1ff) + stoppos -= 64; + + if ((*--triggerpos & 0x1ff) == 0x1ff) + triggerpos -= 64; + return 1; } @@ -229,6 +245,64 @@ static int sigma_read_dram(uint16_t startchunk, size_t numchunks, uint8_t *data) return sigma_read(data, numchunks * CHUNK_SIZE); } +/* Upload trigger look-up tables to Sigma. */ +static int sigma_write_trigger_lut(struct triggerlut *lut) +{ + int i; + uint8_t tmp[2]; + uint16_t bit; + + /* Transpose the table and send to Sigma. */ + for (i = 0; i < 16; ++i) { + bit = 1 << i; + + tmp[0] = tmp[1] = 0; + + if (lut->m2d[0] & bit) + tmp[0] |= 0x01; + if (lut->m2d[1] & bit) + tmp[0] |= 0x02; + if (lut->m2d[2] & bit) + tmp[0] |= 0x04; + if (lut->m2d[3] & bit) + tmp[0] |= 0x08; + + if (lut->m3 & bit) + tmp[0] |= 0x10; + if (lut->m3s & bit) + tmp[0] |= 0x20; + if (lut->m4 & bit) + tmp[0] |= 0x40; + + if (lut->m0d[0] & bit) + tmp[1] |= 0x01; + if (lut->m0d[1] & bit) + tmp[1] |= 0x02; + if (lut->m0d[2] & bit) + tmp[1] |= 0x04; + if (lut->m0d[3] & bit) + tmp[1] |= 0x08; + + if (lut->m1d[0] & bit) + tmp[1] |= 0x10; + if (lut->m1d[1] & bit) + tmp[1] |= 0x20; + if (lut->m1d[2] & bit) + tmp[1] |= 0x40; + if (lut->m1d[3] & bit) + tmp[1] |= 0x80; + + sigma_write_register(WRITE_TRIGGER_SELECT0, tmp, sizeof(tmp)); + sigma_set_register(WRITE_TRIGGER_SELECT1, 0x30 | i); + } + + /* Send the parameters */ + sigma_write_register(WRITE_TRIGGER_SELECT0, (uint8_t *) &lut->params, + sizeof(lut->params)); + + return SIGROK_OK; +} + /* Generate the bitbang stream for programming the FPGA. */ static int bin2bitbang(const char *filename, unsigned char **buf, size_t *buf_size) @@ -392,7 +466,7 @@ static int upload_firmware(int firmware_idx) break; } - /* Prepare firmware */ + /* Prepare firmware. */ snprintf(firmware_path, sizeof(firmware_path), "%s/%s", FIRMWARE_DIR, firmware_files[firmware_idx]); @@ -408,7 +482,7 @@ static int upload_firmware(int firmware_idx) g_free(buf); if ((ret = ftdi_set_bitmode(&ftdic, 0x00, BITMODE_RESET)) < 0) { - g_warning("ftdi_set_bitmode failed: %s", + g_warning("ftdi_set_bitmode failed: %s", ftdi_get_error_string(&ftdic)); return SIGROK_ERR; } @@ -440,7 +514,7 @@ static int hw_opendev(int device_index) struct sigrok_device_instance *sdi; int ret; - /* Make sure it's an ASIX SIGMA */ + /* Make sure it's an ASIX SIGMA. */ if ((ret = ftdi_usb_open_desc(&ftdic, USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { @@ -458,7 +532,8 @@ static int hw_opendev(int device_index) return SIGROK_OK; } -static int set_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerate) +static int set_samplerate(struct sigrok_device_instance *sdi, + uint64_t samplerate) { int i, ret; @@ -474,7 +549,6 @@ static int set_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerat if (samplerate <= MHZ(50)) { ret = upload_firmware(0); num_probes = 16; - // XXX: Setup divider if < 50 MHz } if (samplerate == MHZ(100)) { ret = upload_firmware(1); @@ -487,17 +561,98 @@ static int set_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerat cur_samplerate = samplerate; samples_per_event = 16 / num_probes; + sigma.state = SIGMA_IDLE; g_message("Firmware uploaded"); return ret; } +/* + * In 100 and 200 MHz mode, only a single pin rising/falling can be + * set as trigger. In other modes, two rising/falling triggers can be set, + * in addition to value/mask trigger for any number of probes. + * + * The Sigma supports complex triggers using boolean expressions, but this + * has not been implemented yet. + */ +static int configure_probes(GSList *probes) +{ + struct probe *probe; + GSList *l; + int trigger_set = 0; + int probebit; + + memset(&trigger, 0, sizeof(struct sigma_trigger)); + + for (l = probes; l; l = l->next) { + probe = (struct probe *)l->data; + probebit = 1 << (probe->index - 1); + + if (!probe->enabled || !probe->trigger) + continue; + + if (cur_samplerate >= MHZ(100)) { + /* Fast trigger support. */ + if (trigger_set) { + g_warning("Asix Sigma only supports a single " + "pin trigger in 100 and 200 " + "MHz mode."); + return SIGROK_ERR; + } + if (probe->trigger[0] == 'f') + trigger.fallingmask |= probebit; + else if (probe->trigger[0] == 'r') + trigger.risingmask |= probebit; + else { + g_warning("Asix Sigma only supports " + "rising/falling trigger in 100 " + "and 200 MHz mode."); + return SIGROK_ERR; + } + + ++trigger_set; + } else { + /* Simple trigger support (event). */ + if (probe->trigger[0] == '1') { + trigger.simplevalue |= probebit; + trigger.simplemask |= probebit; + } + else if (probe->trigger[0] == '0') { + trigger.simplevalue &= ~probebit; + trigger.simplemask |= probebit; + } + else if (probe->trigger[0] == 'f') { + trigger.fallingmask |= probebit; + ++trigger_set; + } + else if (probe->trigger[0] == 'r') { + trigger.risingmask |= probebit; + ++trigger_set; + } + + if (trigger_set > 2) { + g_warning("Asix Sigma only supports 2 rising/" + "falling triggers."); + return SIGROK_ERR; + } + } + } + + return SIGROK_OK; +} + static void hw_closedev(int device_index) { - device_index = device_index; + struct sigrok_device_instance *sdi; - ftdi_usb_close(&ftdic); + if ((sdi = get_sigrok_device_instance(device_instances, device_index))) + { + if (sdi->status == ST_ACTIVE) + ftdi_usb_close(&ftdic); + + sdi->status = ST_INACTIVE; + } } static void hw_cleanup(void) @@ -525,7 +680,7 @@ static void *hw_get_device_info(int device_index, int device_info_id) info = &samplerates; break; case DI_TRIGGER_TYPES: - info = 0; //TRIGGER_TYPES; + info = (char *)TRIGGER_TYPES; break; case DI_CUR_SAMPLERATE: info = &cur_samplerate; @@ -562,10 +717,15 @@ static int hw_set_configuration(int device_index, int capability, void *value) if (capability == HWCAP_SAMPLERATE) { ret = set_samplerate(sdi, *(uint64_t*) value); } else if (capability == HWCAP_PROBECONFIG) { - ret = SIGROK_OK; + ret = configure_probes(value); } else if (capability == HWCAP_LIMIT_MSEC) { limit_msec = strtoull(value, NULL, 10); ret = SIGROK_OK; + } else if (capability == HWCAP_CAPTURE_RATIO) { + capture_ratio = strtoull(value, NULL, 10); + ret = SIGROK_OK; + } else if (capability == HWCAP_PROBECONFIG) { + ret = configure_probes((GSList *) value); } else { ret = SIGROK_ERR; } @@ -573,6 +733,37 @@ static int hw_set_configuration(int device_index, int capability, void *value) return ret; } +/* Software trigger to determine exact trigger position. */ +static int get_trigger_offset(uint16_t *samples, uint16_t last_sample, + struct sigma_trigger *t) +{ + int i; + + for (i = 0; i < 8; ++i) { + if (i > 0) + last_sample = samples[i-1]; + + /* Simple triggers. */ + if ((samples[i] & t->simplemask) != t->simplevalue) + continue; + + /* Rising edge. */ + if ((last_sample & t->risingmask) != 0 || (samples[i] & + t->risingmask) != t->risingmask) + continue; + + /* Falling edge. */ + if ((last_sample & t->fallingmask) != t->fallingmask || + (samples[i] & t->fallingmask) != 0) + continue; + + break; + } + + /* If we did not match, return original trigger pos. */ + return i & 0x7; +} + /* * Decode chunk of 1024 bytes, 64 clusters, 7 events per cluster. * Each event is 20ns apart, and can contain multiple samples. @@ -583,7 +774,7 @@ static int hw_set_configuration(int device_index, int capability, void *value) * spread 20 ns apart. */ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, - uint16_t *lastsample, void *user_data) + uint16_t *lastsample, int triggerpos, void *user_data) { uint16_t tsdiff, ts; uint16_t samples[65536 * samples_per_event]; @@ -593,8 +784,21 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, int clustersize = EVENTS_PER_CLUSTER * samples_per_event; uint16_t *event; uint16_t cur_sample; + int triggerts = -1; + + /* Check if trigger is in this chunk. */ + if (triggerpos != -1) { + if (cur_samplerate <= MHZ(50)) + triggerpos -= EVENTS_PER_CLUSTER - 1; + + if (triggerpos < 0) + triggerpos = 0; + + /* Find in which cluster the trigger occured. */ + triggerts = triggerpos / 7; + } - /* For each ts */ + /* For each ts. */ for (i = 0; i < 64; ++i) { ts = *(uint16_t *) &buf[i * 16]; tsdiff = ts - *lastts; @@ -609,8 +813,22 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, n = numpad; } - event = (uint16_t *) &buf[i * 16 + 2]; + /* Send samples between previous and this timestamp to sigrok. */ + sent = 0; + while (sent < n) { + tosend = MIN(2048, n - sent); + packet.type = DF_LOGIC; + packet.length = tosend * sizeof(uint16_t); + packet.unitsize = 2; + packet.payload = samples + sent; + session_bus(user_data, &packet); + + sent += tosend; + } + n = 0; + + event = (uint16_t *) &buf[i * 16 + 2]; cur_sample = 0; /* For each event in cluster. */ @@ -630,20 +848,44 @@ static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, } } - *lastsample = samples[n - 1]; - - /* Send to sigrok. */ + /* Send data up to trigger point (if triggered). */ sent = 0; - while (sent < n) { - tosend = MIN(2048, n - sent); + if (i == triggerts) { + /* + * Trigger is not always accurate to sample because of + * pipeline delay. However, it always triggers before + * the actual event. We therefore look at the next + * samples to pinpoint the exact position of the trigger. + */ + tosend = get_trigger_offset(samples, *lastsample, + &trigger); + + if (tosend > 0) { + packet.type = DF_LOGIC; + packet.length = tosend * sizeof(uint16_t); + packet.unitsize = 2; + packet.payload = samples; + session_bus(user_data, &packet); + + sent += tosend; + } - packet.type = DF_LOGIC16; - packet.length = tosend * sizeof(uint16_t); - packet.payload = samples + sent; + packet.type = DF_TRIGGER; + packet.length = 0; + packet.payload = 0; session_bus(user_data, &packet); - - sent += tosend; } + + /* Send rest of the chunk to sigrok. */ + tosend = n - sent; + + packet.type = DF_LOGIC; + packet.length = tosend * sizeof(uint16_t); + packet.unitsize = 2; + packet.payload = samples + sent; + session_bus(user_data, &packet); + + *lastsample = samples[n - 1]; } return SIGROK_OK; @@ -654,75 +896,244 @@ static int receive_data(int fd, int revents, void *user_data) struct datafeed_packet packet; const int chunks_per_read = 32; unsigned char buf[chunks_per_read * CHUNK_SIZE]; - int bufsz, numchunks, curchunk, i, newchunks; - uint32_t triggerpos, stoppos, running_msec; + int bufsz, numchunks, i, newchunks; + uint32_t running_msec; struct timeval tv; - uint16_t lastts = 0; - uint16_t lastsample = 0; fd = fd; revents = revents; - /* Get the current position. */ - sigma_read_pos(&stoppos, &triggerpos); - numchunks = stoppos / 512; - - /* Check if the has expired, or memory is full. */ - gettimeofday(&tv, 0); - running_msec = (tv.tv_sec - start_tv.tv_sec) * 1000 + - (tv.tv_usec - start_tv.tv_usec) / 1000; + numchunks = sigma.stoppos / 512; - if (running_msec < limit_msec && numchunks < 32767) + if (sigma.state == SIGMA_IDLE) return FALSE; - /* Stop acqusition. */ - sigma_set_register(WRITE_MODE, 0x11); + if (sigma.state == SIGMA_CAPTURE) { - /* Set SDRAM Read Enable. */ - sigma_set_register(WRITE_MODE, 0x02); + /* Check if the timer has expired, or memory is full. */ + gettimeofday(&tv, 0); + running_msec = (tv.tv_sec - start_tv.tv_sec) * 1000 + + (tv.tv_usec - start_tv.tv_usec) / 1000; - /* Get the current position. */ - sigma_read_pos(&stoppos, &triggerpos); + if (running_msec < limit_msec && numchunks < 32767) + return FALSE; - /* Read mode status. We will care for this later. */ - sigma_get_register(READ_MODE); + hw_stop_acquisition(-1, user_data); - /* Download sample data. */ - for (curchunk = 0; curchunk < numchunks;) { - newchunks = MIN(chunks_per_read, numchunks - curchunk); + return FALSE; + + } else if (sigma.state == SIGMA_DOWNLOAD) { + if (sigma.chunks_downloaded >= numchunks) { + /* End of samples. */ + packet.type = DF_END; + packet.length = 0; + session_bus(user_data, &packet); + + sigma.state = SIGMA_IDLE; + + return TRUE; + } + + newchunks = MIN(chunks_per_read, + numchunks - sigma.chunks_downloaded); g_message("Downloading sample data: %.0f %%", - 100.0 * curchunk / numchunks); + 100.0 * sigma.chunks_downloaded / numchunks); - bufsz = sigma_read_dram(curchunk, newchunks, buf); + bufsz = sigma_read_dram(sigma.chunks_downloaded, + newchunks, buf); /* Find first ts. */ - if (curchunk == 0) - lastts = *(uint16_t *) buf - 1; + if (sigma.chunks_downloaded == 0) { + sigma.lastts = *(uint16_t *) buf - 1; + sigma.lastsample = 0; + } /* Decode chunks and send them to sigrok. */ for (i = 0; i < newchunks; ++i) { - decode_chunk_ts(buf + (i * CHUNK_SIZE), - &lastts, &lastsample, user_data); + if (sigma.chunks_downloaded + i == sigma.triggerchunk) + decode_chunk_ts(buf + (i * CHUNK_SIZE), + &sigma.lastts, &sigma.lastsample, + sigma.triggerpos & 0x1ff, + user_data); + else + decode_chunk_ts(buf + (i * CHUNK_SIZE), + &sigma.lastts, &sigma.lastsample, + -1, user_data); } - curchunk += newchunks; + sigma.chunks_downloaded += newchunks; } - /* End of data */ - packet.type = DF_END; - packet.length = 0; - session_bus(user_data, &packet); - return TRUE; } +/* Build a LUT entry used by the trigger functions. */ +static void build_lut_entry(uint16_t value, uint16_t mask, uint16_t *entry) +{ + int i, j, k, bit; + + /* For each quad probe. */ + for (i = 0; i < 4; ++i) { + entry[i] = 0xffff; + + /* For each bit in LUT. */ + for (j = 0; j < 16; ++j) + + /* For each probe in quad. */ + for (k = 0; k < 4; ++k) { + bit = 1 << (i * 4 + k); + + /* Set bit in entry */ + if ((mask & bit) && + ((!(value & bit)) != + (!(j & (1 << k))))) + entry[i] &= ~(1 << j); + } + } +} + +/* Add a logical function to LUT mask. */ +static void add_trigger_function(enum triggerop oper, enum triggerfunc func, + int index, int neg, uint16_t *mask) +{ + int i, j; + int x[2][2], tmp, a, b, aset, bset, rset; + + memset(x, 0, 4 * sizeof(int)); + + /* Trigger detect condition. */ + switch (oper) { + case OP_LEVEL: + x[0][1] = 1; + x[1][1] = 1; + break; + case OP_NOT: + x[0][0] = 1; + x[1][0] = 1; + break; + case OP_RISE: + x[0][1] = 1; + break; + case OP_FALL: + x[1][0] = 1; + break; + case OP_RISEFALL: + x[0][1] = 1; + x[1][0] = 1; + break; + case OP_NOTRISE: + x[1][1] = 1; + x[0][0] = 1; + x[1][0] = 1; + break; + case OP_NOTFALL: + x[1][1] = 1; + x[0][0] = 1; + x[0][1] = 1; + break; + case OP_NOTRISEFALL: + x[1][1] = 1; + x[0][0] = 1; + break; + } + + /* Transpose if neg is set. */ + if (neg) { + for (i = 0; i < 2; ++i) + for (j = 0; j < 2; ++j) { + tmp = x[i][j]; + x[i][j] = x[1-i][1-j]; + x[1-i][1-j] = tmp; + } + } + + /* Update mask with function. */ + for (i = 0; i < 16; ++i) { + a = (i >> (2 * index + 0)) & 1; + b = (i >> (2 * index + 1)) & 1; + + aset = (*mask >> i) & 1; + bset = x[b][a]; + + if (func == FUNC_AND || func == FUNC_NAND) + rset = aset & bset; + else if (func == FUNC_OR || func == FUNC_NOR) + rset = aset | bset; + else if (func == FUNC_XOR || func == FUNC_NXOR) + rset = aset ^ bset; + + if (func == FUNC_NAND || func == FUNC_NOR || func == FUNC_NXOR) + rset = !rset; + + *mask &= ~(1 << i); + + if (rset) + *mask |= 1 << i; + } +} + +/* + * Build trigger LUTs used by 50 MHz and lower sample rates for supporting + * simple pin change and state triggers. Only two transitions (rise/fall) can be + * set at any time, but a full mask and value can be set (0/1). + */ +static int build_basic_trigger(struct triggerlut *lut) +{ + int i,j; + uint16_t masks[2] = { 0, 0 }; + + memset(lut, 0, sizeof(struct triggerlut)); + + /* Contant for simple triggers. */ + lut->m4 = 0xa000; + + /* Value/mask trigger support. */ + build_lut_entry(trigger.simplevalue, trigger.simplemask, lut->m2d); + + /* Rise/fall trigger support. */ + for (i = 0, j = 0; i < 16; ++i) { + if (trigger.risingmask & (1 << i) || + trigger.fallingmask & (1 << i)) + masks[j++] = 1 << i; + } + + build_lut_entry(masks[0], masks[0], lut->m0d); + build_lut_entry(masks[1], masks[1], lut->m1d); + + /* Add glue logic */ + if (masks[0] || masks[1]) { + /* Transition trigger. */ + if (masks[0] & trigger.risingmask) + add_trigger_function(OP_RISE, FUNC_OR, 0, 0, &lut->m3); + if (masks[0] & trigger.fallingmask) + add_trigger_function(OP_FALL, FUNC_OR, 0, 0, &lut->m3); + if (masks[1] & trigger.risingmask) + add_trigger_function(OP_RISE, FUNC_OR, 1, 0, &lut->m3); + if (masks[1] & trigger.fallingmask) + add_trigger_function(OP_FALL, FUNC_OR, 1, 0, &lut->m3); + } else { + /* Only value/mask trigger. */ + lut->m3 = 0xffff; + } + + /* Triggertype: event. */ + lut->params.selres = 3; + + return SIGROK_OK; +} + static int hw_start_acquisition(int device_index, gpointer session_device_id) { struct sigrok_device_instance *sdi; struct datafeed_packet packet; struct datafeed_header header; - uint8_t trigger_option[2] = { 0x38, 0x00 }; + struct clockselect_50 clockselect; + int frac; + uint8_t triggerselect; + struct triggerinout triggerinout_conf; + struct triggerlut lut; + int triggerpin; session_device_id = session_device_id; @@ -731,20 +1142,50 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id) device_index = device_index; - if (cur_firmware == -1) { - /* Samplerate has not been set. Default to 200 MHz */ - set_samplerate(sdi, 200); - } + /* If the samplerate has not been set, default to 50 MHz. */ + if (cur_firmware == -1) + set_samplerate(sdi, MHZ(50)); - /* Setup trigger (by trigger-in). */ + /* Enter trigger programming mode. */ sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20); - /* More trigger setup. */ + /* 100 and 200 MHz mode. */ + if (cur_samplerate >= MHZ(100)) { + sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81); + + /* Find which pin to trigger on from mask. */ + for (triggerpin = 0; triggerpin < 8; ++triggerpin) + if ((trigger.risingmask | trigger.fallingmask) & + (1 << triggerpin)) + break; + + /* Set trigger pin and light LED on trigger. */ + triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); + + /* Default rising edge. */ + if (trigger.fallingmask) + triggerselect |= 1 << 3; + + /* All other modes. */ + } else if (cur_samplerate <= MHZ(50)) { + build_basic_trigger(&lut); + + sigma_write_trigger_lut(&lut); + + triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); + } + + /* 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; + sigma_write_register(WRITE_TRIGGER_OPTION, - trigger_option, sizeof(trigger_option)); + (uint8_t *) &triggerinout_conf, + sizeof(struct triggerinout)); - /* Trigger normal (falling edge). */ - sigma_set_register(WRITE_TRIGGER_SELECT1, 0x08); + /* Go back to normal mode. */ + sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect); /* Set clock select register. */ if (cur_samplerate == MHZ(200)) @@ -755,37 +1196,27 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id) sigma_set_register(WRITE_CLOCK_SELECT, 0x00); 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 mode (or fraction thereof). Any fraction down to + * 50 MHz / 256 can be used, but is not supported by sigrok API. */ + frac = MHZ(50) / cur_samplerate - 1; - int frac = MHZ(50) / cur_samplerate - 1; - - struct clockselect_50 clockselect = { - .async = 0, - .fraction = frac, - .disabled_probes = 0, - }; + clockselect.async = 0; + clockselect.fraction = frac; + clockselect.disabled_probes = 0; sigma_write_register(WRITE_CLOCK_SELECT, - (uint8_t *) &clockselect, - sizeof(clockselect)); + (uint8_t *) &clockselect, + sizeof(clockselect)); } - /* Setup maximum post trigger time. */ - sigma_set_register(WRITE_POST_TRIGGER, 0xff); + sigma_set_register(WRITE_POST_TRIGGER, (capture_ratio * 255) / 100); - /* Start acqusition (software trigger start). */ + /* Start acqusition. */ gettimeofday(&start_tv, 0); sigma_set_register(WRITE_MODE, 0x0d); - /* Add capture source. */ - source_add(0, G_IO_IN, 10, receive_data, session_device_id); - - receive_data(0, 1, session_device_id); - /* Send header packet to the session bus. */ packet.type = DF_HEADER; packet.length = sizeof(struct datafeed_header); @@ -794,22 +1225,45 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id) gettimeofday(&header.starttime, NULL); header.samplerate = cur_samplerate; header.protocol_id = PROTO_RAW; - header.num_probes = num_probes; + header.num_logic_probes = num_probes; + header.num_analog_probes = 0; session_bus(session_device_id, &packet); + /* Add capture source. */ + source_add(0, G_IO_IN, 10, receive_data, session_device_id); + + sigma.state = SIGMA_CAPTURE; + return SIGROK_OK; } static void hw_stop_acquisition(int device_index, gpointer session_device_id) { + uint8_t modestatus; + device_index = device_index; session_device_id = session_device_id; /* Stop acquisition. */ sigma_set_register(WRITE_MODE, 0x11); - // XXX Set some state to indicate that data should be sent to sigrok - // Now, we just wait for timeout + /* Set SDRAM Read Enable. */ + sigma_set_register(WRITE_MODE, 0x02); + + /* Get the current position. */ + sigma_read_pos(&sigma.stoppos, &sigma.triggerpos); + + /* Check if trigger has fired. */ + modestatus = sigma_get_register(READ_MODE); + if (modestatus & 0x20) { + sigma.triggerchunk = sigma.triggerpos / 512; + + } else + sigma.triggerchunk = -1; + + sigma.chunks_downloaded = 0; + + sigma.state = SIGMA_DOWNLOAD; } struct device_plugin asix_sigma_plugin_info = { @@ -824,5 +1278,5 @@ struct device_plugin asix_sigma_plugin_info = { hw_get_capabilities, hw_set_configuration, hw_start_acquisition, - hw_stop_acquisition + hw_stop_acquisition, };