#define USB_TIMEOUT (3 * 1000)
+SR_PRIV int dslogic_set_vth(const struct sr_dev_inst *sdi, double vth)
+{
+ struct sr_usb_dev_inst *usb;
+ int ret;
+ uint8_t cmd;
+
+ usb = sdi->conn;
+
+ cmd = (vth / 5.0) * 255;
+
+ /* Send the control command. */
+ ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
+ LIBUSB_ENDPOINT_OUT, DS_CMD_VTH, 0x0000, 0x0000,
+ (unsigned char *)&cmd, sizeof(cmd), 3000);
+ if (ret < 0) {
+ sr_err("Unable to send VTH command: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
SR_PRIV int dslogic_fpga_firmware_upload(const struct sr_dev_inst *sdi,
const char *name)
{
int ret;
devc = sdi->priv;
- mode.flags = 0;
+ mode.flags = DS_START_FLAGS_MODE_LA;
mode.sample_delay_h = mode.sample_delay_l = 0;
if (devc->sample_wide)
mode.flags |= DS_START_FLAGS_SAMPLE_WIDE;
return SR_OK;
}
+/*
+ * Get the session trigger and configure the FPGA structure
+ * accordingly.
+ */
+static int dslogic_set_trigger(const struct sr_dev_inst *sdi,
+ struct dslogic_fpga_config *cfg)
+{
+ struct sr_trigger *trigger;
+ struct sr_trigger_stage *stage;
+ struct sr_trigger_match *match;
+ struct dev_context *devc;
+ const GSList *l, *m;
+ int channelbit, i = 0;
+ uint16_t v16;
+
+ devc = sdi->priv;
+
+ cfg->trig_mask0[0] = 0xffff;
+ cfg->trig_mask1[0] = 0xffff;
+
+ cfg->trig_value0[0] = 0;
+ cfg->trig_value1[0] = 0;
+
+ cfg->trig_edge0[0] = 0;
+ cfg->trig_edge1[0] = 0;
+
+ cfg->trig_logic0[0] = 0;
+ cfg->trig_logic1[0] = 0;
+
+ cfg->trig_count0[0] = 0;
+ cfg->trig_count1[0] = 0;
+
+ 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;
+ for (m = stage->matches; m; m = m->next) {
+ match = m->data;
+ if (!match->channel->enabled)
+ /* Ignore disabled channels with a trigger. */
+ continue;
+ channelbit = 1 << (match->channel->index);
+ /* Simple trigger support (event). */
+ if (match->match == SR_TRIGGER_ONE) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_value0[0] |= channelbit;
+ cfg->trig_value1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_ZERO) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ } else if (match->match == SR_TRIGGER_FALLING) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_RISING) {
+ cfg->trig_mask0[0] &= ~channelbit;
+ cfg->trig_mask1[0] &= ~channelbit;
+ cfg->trig_value0[0] |= channelbit;
+ cfg->trig_value1[0] |= channelbit;
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ } else if (match->match == SR_TRIGGER_EDGE) {
+ cfg->trig_edge0[0] |= channelbit;
+ cfg->trig_edge1[0] |= channelbit;
+ }
+ }
+ }
+
+ 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;
int transferred, len, ret;
sr_dbg("Configuring FPGA.");
+
usb = sdi->conn;
devc = sdi->priv;
LIBUSB_ENDPOINT_OUT, DS_CMD_CONFIG, 0x0000, 0x0000,
c, 3, USB_TIMEOUT);
if (ret < 0) {
- sr_err("Failed to send FPGA configure command: %s.", libusb_error_name(ret));
+ sr_err("Failed to send FPGA configure command: %s.",
+ libusb_error_name(ret));
return SR_ERR;
}
* 15 1 = internal test mode
* 14 1 = external test mode
* 13 1 = loopback test mode
- * 8-12 unused
+ * 12 1 = stream mode
+ * 11 1 = serial trigger
+ * 8-10 unused
* 7 1 = analog mode
* 6 1 = samplerate 400MHz
* 5 1 = samplerate 200MHz or analog mode
* 4 0 = logic, 1 = dso or analog
- * 2-3 unused
- * 1 0 = internal clock, 1 = external clock
+ * 3 1 = RLE encoding (enable for more than 16 Megasamples)
+ * 1-2 00 = internal clock,
+ * 01 = external clock rising,
+ * 11 = external clock falling
* 0 1 = trigger enabled
*/
v16 = 0x0000;
v16 = 1 << 14;
else if (devc->dslogic_mode == DS_OP_LOOPBACK_TEST)
v16 = 1 << 13;
- if (devc->dslogic_external_clock)
- v16 |= 1 << 2;
- WL16(&cfg.mode, v16);
+ if (devc->dslogic_continuous_mode)
+ v16 |= 1 << 12;
+ if (devc->dslogic_external_clock) {
+ v16 |= 1 << 1;
+ if (devc->dslogic_clock_edge == DS_EDGE_FALLING)
+ v16 |= 1 << 2;
+ }
+ if (devc->limit_samples > DS_MAX_LOGIC_DEPTH *
+ ceil(devc->cur_samplerate * 1.0 / DS_MAX_LOGIC_SAMPLERATE)
+ && !devc->dslogic_continuous_mode) {
+ /* Enable RLE for long captures.
+ * Without this, captured data present errors.
+ */
+ v16 |= 1 << 3;
+ }
- v32 = ceil(SR_MHZ(100) * 1.0 / devc->cur_samplerate);
+ WL16(&cfg.mode, v16);
+ v32 = ceil(DS_MAX_LOGIC_SAMPLERATE * 1.0 / devc->cur_samplerate);
WL32(&cfg.divider, v32);
WL32(&cfg.count, devc->limit_samples);
+ dslogic_set_trigger(sdi, &cfg);
+
len = sizeof(struct dslogic_fpga_config);
ret = libusb_bulk_transfer(usb->devhdl, 2 | LIBUSB_ENDPOINT_OUT,
(unsigned char *)&cfg, len, &transferred, USB_TIMEOUT);
return SR_OK;
}
+
+static int to_bytes_per_ms(struct dev_context *devc)
+{
+ if (devc->cur_samplerate > SR_MHZ(100))
+ return SR_MHZ(100) / 1000 * (devc->sample_wide ? 2 : 1);
+
+ return devc->cur_samplerate / 1000 * (devc->sample_wide ? 2 : 1);
+}
+
+static size_t get_buffer_size(struct dev_context *devc)
+{
+ size_t s;
+
+ /*
+ * The buffer should be large enough to hold 10ms of data and
+ * a multiple of 512.
+ */
+ s = 10 * to_bytes_per_ms(devc);
+ // s = to_bytes_per_ms(devc->cur_samplerate);
+ return (s + 511) & ~511;
+}
+
+SR_PRIV int dslogic_get_number_of_transfers(struct dev_context *devc)
+{
+ unsigned int n;
+
+ /* Total buffer size should be able to hold about 100ms of data. */
+ n = (100 * to_bytes_per_ms(devc) / get_buffer_size(devc));
+ sr_info("New calculation: %d", n);
+
+ if (n > NUM_SIMUL_TRANSFERS)
+ return NUM_SIMUL_TRANSFERS;
+
+ return n;
+}
projects / libsigrok.git / blobdiff