static void brymen_bm86x_handle_packet(const struct sr_dev_inst *sdi,
unsigned char *buf)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog[2];
struct sr_analog_encoding encoding[2];
struct sr_analog_meaning meaning[2];
struct sr_analog_spec spec[2];
float floatval[2];
devc = sdi->priv;
sr_analog_init(&analog[0], &encoding[0], &meaning[0], &spec[0], 0);
sr_analog_init(&analog[1], &encoding[1], &meaning[1], &spec[1], 0);
analog[0].meaning->mq = 0;
analog[0].meaning->mqflags = 0;
analog[1].meaning->mq = 0;
analog[1].meaning->mqflags = 0;
brymen_bm86x_parse(buf, floatval, analog);
if (analog[0].meaning->mq != 0) {
/* Got a measurement. */
analog[0].num_samples = 1;
analog[0].data = &floatval[0];
analog[0].meaning->channels = g_slist_append(NULL, sdi->channels->data);
packet.type = SR_DF_ANALOG;
packet.payload = &analog[0];
sr_session_send(sdi, &packet);
g_slist_free(analog[0].meaning->channels);
}
if (analog[1].meaning->mq != 0) {
/* Got a measurement. */
analog[1].num_samples = 1;
analog[1].data = &floatval[1];
analog[1].meaning->channels = g_slist_append(NULL, sdi->channels->next->data);
packet.type = SR_DF_ANALOG;
packet.payload = &analog[1];
sr_session_send(sdi, &packet);
g_slist_free(analog[1].meaning->channels);
}
if (analog[0].meaning->mq != 0 || analog[1].meaning->mq != 0)
sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
}
static void send_sample(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
devc = sdi->priv;
sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
analog.meaning->channels = sdi->channels;
analog.num_samples = 1;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = SR_MQFLAG_DC;
analog.data = &devc->voltage;
sr_session_send(sdi, &packet);
analog.meaning->mq = SR_MQ_CURRENT;
analog.meaning->unit = SR_UNIT_AMPERE;
analog.meaning->mqflags = 0;
analog.data = &devc->current;
sr_session_send(sdi, &packet);
sr_sw_limits_update_samples_read(&devc->limits, 1);
}
static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi)
{
float floatval;
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
devc = sdi->priv;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.num_samples = 1;
analog.meaning->mq = 0;
if (brymen_parse(buf, &floatval, &analog, NULL) != SR_OK)
return;
analog.data = &floatval;
analog.meaning->channels = sdi->channels;
if (analog.meaning->mq != 0) {
/* Got a measurement. */
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
}
}
static void send_data(const struct sr_dev_inst *sdi, float sample)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
devc = sdi->priv;
sr_analog_init(&analog, &encoding, &meaning, &spec, 1);
meaning.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
meaning.mqflags = devc->cur_mqflags;
meaning.unit = SR_UNIT_DECIBEL_SPL;
meaning.channels = sdi->channels;
analog.num_samples = 1;
analog.data = &sample;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
devc->num_samples++;
if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi);
}
static void teleinfo_send_value(struct sr_dev_inst *sdi, const char *channel_name,
float value, enum sr_mq mq, enum sr_unit unit)
{
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct sr_channel *ch;
ch = teleinfo_find_channel(sdi, channel_name);
if (!ch || !ch->enabled)
return;
/* Note: digits/spec_digits is actually really 0 for this device! */
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = g_slist_append(analog.meaning->channels, ch);
analog.num_samples = 1;
analog.meaning->mq = mq;
analog.meaning->unit = unit;
analog.data = &value;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
}
static void push_samples(const struct sr_dev_inst *sdi, uint8_t *buf, size_t num)
{
struct dev_context *devc = sdi->priv;
float *data = devc->samples;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct sr_datafeed_packet packet = {
.type = SR_DF_ANALOG,
.payload = &analog,
};
float factor = devc->factor;
while (num--)
data[num] = (buf[num] - 0x80) * factor;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = devc->enabled_channel;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0;
analog.num_samples = num;
analog.data = data;
sr_session_send(sdi, &packet);
}
static int handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi, int idx)
{
float temperature, humidity;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct dev_context *devc;
GSList *l;
int ret;
(void)idx;
devc = sdi->priv;
ret = packet_parse((const char *)buf, idx, &temperature, &humidity);
if (ret < 0) {
sr_err("Failed to parse packet.");
return SR_ERR;
}
sr_analog_init(&analog, &encoding, &meaning, &spec, 3);
/* Common values for both channels. */
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
analog.num_samples = 1;
/* Temperature. */
l = g_slist_copy(sdi->channels);
l = g_slist_remove_link(l, g_slist_nth(l, 1));
meaning.channels = l;
meaning.mq = SR_MQ_TEMPERATURE;
meaning.unit = SR_UNIT_CELSIUS; /* TODO: Use C/F correctly. */
analog.data = &temperature;
sr_session_send(sdi, &packet);
g_slist_free(l);
/* Humidity. */
if (mic_devs[idx].has_humidity) {
l = g_slist_copy(sdi->channels);
l = g_slist_remove_link(l, g_slist_nth(l, 0));
meaning.channels = l;
meaning.mq = SR_MQ_RELATIVE_HUMIDITY;
meaning.unit = SR_UNIT_PERCENTAGE;
analog.data = &humidity;
sr_session_send(sdi, &packet);
g_slist_free(l);
}
devc->num_samples++;
return SR_OK;
}
static void maynuo_m97_session_send_value(const struct sr_dev_inst *sdi, struct sr_channel *ch, float value, enum sr_mq mq, enum sr_unit unit)
{
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = g_slist_append(NULL, ch);
analog.num_samples = 1;
analog.data = &value;
analog.meaning->mq = mq;
analog.meaning->unit = unit;
analog.meaning->mqflags = SR_MQFLAG_DC;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
}
static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
void *info)
{
struct dmm_info *dmm;
float floatval;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct dev_context *devc;
dmm = (struct dmm_info *)sdi->driver;
log_dmm_packet(buf);
devc = sdi->priv;
/* Note: digits/spec_digits will be overridden by the DMM parsers. */
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = sdi->channels;
analog.num_samples = 1;
analog.meaning->mq = 0;
dmm->packet_parse(buf, &floatval, &analog, info);
analog.data = &floatval;
/* If this DMM needs additional handling, call the resp. function. */
if (dmm->dmm_details)
dmm->dmm_details(&analog, info);
if (analog.meaning->mq != 0) {
/* Got a measurement. */
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
sr_sw_limits_update_samples_read(&devc->limits, 1);
}
}
/** Send data packets for current measurements. */
static void send_data(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
int i;
float data[MAX_CHANNELS];
devc = sdi->priv;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = sdi->channels;
analog.num_samples = 1;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = SR_MQFLAG_DC;
analog.data = data;
for (i = 0; i < devc->model->num_channels; i++)
((float *)analog.data)[i] = devc->channel_status[i].output_voltage_last; /* Value always 3.3 or 5 for channel 3, if present! */
sr_session_send(sdi, &packet);
analog.meaning->mq = SR_MQ_CURRENT;
analog.meaning->unit = SR_UNIT_AMPERE;
analog.meaning->mqflags = 0;
analog.data = data;
for (i = 0; i < devc->model->num_channels; i++)
((float *)analog.data)[i] = devc->channel_status[i].output_current_last; /* Value always 0 for channel 3, if present! */
sr_session_send(sdi, &packet);
sr_sw_limits_update_samples_read(&devc->limits, 1);
}
SR_PRIV void mso_send_data_proc(struct sr_dev_inst *sdi,
uint8_t *data, size_t length, size_t sample_width)
{
size_t i;
struct dev_context *devc;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
(void)sample_width;
devc = sdi->priv;
length /= 2;
/* Send the logic */
for (i = 0; i < length; i++) {
devc->logic_buffer[i] = data[i * 2];
/* Rescale to -10V - +10V from 0-255. */
devc->analog_buffer[i] = (data[i * 2 + 1] - 128.0f) / 12.8f;
};
const struct sr_datafeed_logic logic = {
.length = length,
.unitsize = 1,
.data = devc->logic_buffer
};
const struct sr_datafeed_packet logic_packet = {
.type = SR_DF_LOGIC,
.payload = &logic
};
sr_session_send(sdi, &logic_packet);
sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
analog.meaning->channels = devc->enabled_analog_channels;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0 /* SR_MQFLAG_DC */;
analog.num_samples = length;
analog.data = devc->analog_buffer;
const struct sr_datafeed_packet analog_packet = {
.type = SR_DF_ANALOG,
.payload = &analog
};
sr_session_send(sdi, &analog_packet);
}
SR_PRIV void la_send_data_proc(struct sr_dev_inst *sdi,
uint8_t *data, size_t length, size_t sample_width)
{
const struct sr_datafeed_logic logic = {
.length = length,
.unitsize = sample_width,
.data = data
};
const struct sr_datafeed_packet packet = {
.type = SR_DF_LOGIC,
.payload = &logic
};
sr_session_send(sdi, &packet);
}
SR_PRIV void LIBUSB_CALL fx2lafw_receive_transfer(struct libusb_transfer *transfer)
{
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;
sdi = transfer->user_data;
devc = sdi->priv;
/*
* If acquisition has already ended, just free any queued up
* transfer that come in.
*/
if (devc->acq_aborted) {
free_transfer(transfer);
return;
}
sr_dbg("receive_transfer(): status %s received %d bytes.",
libusb_error_name(transfer->status), transfer->actual_length);
/* Save incoming transfer before reusing the transfer struct. */
unitsize = devc->sample_wide ? 2 : 1;
cur_sample_count = transfer->actual_length / unitsize;
switch (transfer->status) {
case LIBUSB_TRANSFER_NO_DEVICE:
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
return;
case LIBUSB_TRANSFER_COMPLETED:
case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
break;
default:
packet_has_error = TRUE;
break;
}
if (transfer->actual_length == 0 || packet_has_error) {
devc->empty_transfer_count++;
if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
/*
* The FX2 gave up. End the acquisition, the frontend
* will work out that the samplecount is short.
*/
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
} else {
resubmit_transfer(transfer);
}
return;
} else {
devc->empty_transfer_count = 0;
}
if (devc->trigger_fired) {
if (!devc->limit_samples || devc->sent_samples < devc->limit_samples) {
/* Send the incoming transfer to the session bus. */
if (devc->limit_samples && devc->sent_samples + cur_sample_count > devc->limit_samples)
num_samples = devc->limit_samples - devc->sent_samples;
else
num_samples = cur_sample_count;
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,
transfer->buffer, transfer->actual_length, &pre_trigger_samples);
if (trigger_offset > -1) {
devc->sent_samples += pre_trigger_samples;
num_samples = cur_sample_count - trigger_offset;
if (devc->limit_samples &&
num_samples > devc->limit_samples - devc->sent_samples)
num_samples = devc->limit_samples - devc->sent_samples;
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer
+ trigger_offset * unitsize,
num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
devc->trigger_fired = TRUE;
}
}
if (devc->limit_samples && devc->sent_samples >= devc->limit_samples) {
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
} else
resubmit_transfer(transfer);
}
static unsigned int to_bytes_per_ms(unsigned int samplerate)
{
return samplerate / 1000;
}
SR_PRIV size_t fx2lafw_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->cur_samplerate);
return (s + 511) & ~511;
}
/**
* Process received line. It consists of 20 hex digits + \\r\\n,
* e.g. '08100400018100400000'.
*/
static void nma_process_line(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
int pos, flags;
int vt, range; /* Measurement value type, range in device format */
int mmode, devstat; /* Measuring mode, device status */
float value; /* Measured value */
float scale; /* Scaling factor depending on range and function */
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct sr_datafeed_packet packet;
devc = sdi->priv;
devc->buf[LINE_LENGTH] = '\0';
sr_spew("Received line '%s'.", devc->buf);
/* Check line. */
if (strlen((const char *)devc->buf) != LINE_LENGTH) {
sr_err("line: Invalid status '%s', must be 20 hex digits.",
devc->buf);
devc->buflen = 0;
return;
}
for (pos = 0; pos < LINE_LENGTH; pos++) {
if (!isxdigit(devc->buf[pos])) {
sr_err("line: Expected hex digit in '%s' at pos %d!",
devc->buf, pos);
devc->buflen = 0;
return;
}
}
/* Start decoding. */
value = 0.0;
scale = 1.0;
/* TODO: Use proper 'digits' value for this device (and its modes). */
sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
/*
* The numbers are hex digits, starting from 0.
* 0: Keyboard status, currently not interesting.
* 1: Central switch status, currently not interesting.
* 2: Type of measured value.
*/
vt = xgittoint(devc->buf[2]);
switch (vt) {
case 0:
analog.meaning->mq = SR_MQ_VOLTAGE;
break;
case 1:
analog.meaning->mq = SR_MQ_CURRENT; /* 2A */
break;
case 2:
analog.meaning->mq = SR_MQ_RESISTANCE;
break;
case 3:
analog.meaning->mq = SR_MQ_CAPACITANCE;
break;
case 4:
analog.meaning->mq = SR_MQ_TEMPERATURE;
break;
case 5:
analog.meaning->mq = SR_MQ_FREQUENCY;
break;
case 6:
analog.meaning->mq = SR_MQ_CURRENT; /* 10A */
break;
case 7:
analog.meaning->mq = SR_MQ_GAIN; /* TODO: Scale factor */
break;
case 8:
analog.meaning->mq = SR_MQ_GAIN; /* Percentage */
scale /= 100.0;
break;
case 9:
analog.meaning->mq = SR_MQ_GAIN; /* dB */
scale /= 100.0;
break;
default:
sr_err("Unknown value type: 0x%02x.", vt);
break;
}
/* 3: Measurement range for measured value */
range = xgittoint(devc->buf[3]);
switch (vt) {
case 0: /* V */
scale *= pow(10.0, range - 5);
break;
case 1: /* A */
scale *= pow(10.0, range - 7);
break;
case 2: /* Ω */
scale *= pow(10.0, range - 2);
break;
case 3: /* F */
scale *= pow(10.0, range - 12);
break;
case 4: /* °C */
scale *= pow(10.0, range - 1);
break;
case 5: /* Hz */
scale *= pow(10.0, range - 2);
break;
// No default, other value types have fixed display format.
}
/* 5: Sign and 1st digit */
flags = xgittoint(devc->buf[5]);
value = (flags & 0x03);
if (flags & 0x04)
scale *= -1;
/* 6-9: 2nd-4th digit */
for (pos = 6; pos < 10; pos++)
value = value * 10 + xgittoint(devc->buf[pos]);
value *= scale;
/* 10: Display counter */
mmode = xgittoint(devc->buf[10]);
switch (mmode) {
case 0: /* Frequency */
analog.meaning->unit = SR_UNIT_HERTZ;
break;
case 1: /* V TRMS, only type 5 */
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags |= (SR_MQFLAG_AC | SR_MQFLAG_DC | SR_MQFLAG_RMS);
break;
case 2: /* V AC */
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags |= SR_MQFLAG_AC;
if (devc->type >= 3)
analog.meaning->mqflags |= SR_MQFLAG_RMS;
break;
case 3: /* V DC */
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags |= SR_MQFLAG_DC;
break;
case 4: /* Ohm */
analog.meaning->unit = SR_UNIT_OHM;
break;
case 5: /* Continuity */
analog.meaning->unit = SR_UNIT_BOOLEAN;
analog.meaning->mq = SR_MQ_CONTINUITY;
/* TODO: Continuity handling is a bit odd in libsigrok. */
break;
case 6: /* Degree Celsius */
analog.meaning->unit = SR_UNIT_CELSIUS;
break;
case 7: /* Capacity */
analog.meaning->unit = SR_UNIT_FARAD;
break;
case 8: /* Current DC */
analog.meaning->unit = SR_UNIT_AMPERE;
analog.meaning->mqflags |= SR_MQFLAG_DC;
break;
case 9: /* Current AC */
analog.meaning->unit = SR_UNIT_AMPERE;
analog.meaning->mqflags |= SR_MQFLAG_AC;
if (devc->type >= 3)
analog.meaning->mqflags |= SR_MQFLAG_RMS;
break;
case 0xa: /* Current TRMS, only type 5 */
analog.meaning->unit = SR_UNIT_AMPERE;
analog.meaning->mqflags |= (SR_MQFLAG_AC | SR_MQFLAG_DC | SR_MQFLAG_RMS);
break;
case 0xb: /* Diode */
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags |= (SR_MQFLAG_DIODE | SR_MQFLAG_DC);
break;
default:
sr_err("Unknown mmode: 0x%02x.", mmode);
break;
}
/* 11: Device status */
devstat = xgittoint(devc->buf[11]);
switch (devstat) {
case 1: /* Normal measurement */
break;
case 2: /* Input loop (limit, reference values) */
break;
case 3: /* TRANS/SENS */
break;
case 4: /* Error */
sr_err("Device error. Fuse?"); /* TODO: Really abort? */
devc->buflen = 0;
return; /* Cannot continue. */
default:
sr_err("Unknown device status: 0x%02x", devstat);
break;
}
/* 12-19: Flags and display symbols */
/* 12, 13 */
flags = (xgittoint(devc->buf[12]) << 8) | xgittoint(devc->buf[13]);
/* 0x80: PRINT TODO: Stop polling when discovered? */
/* 0x40: EXTR */
if (analog.meaning->mq == SR_MQ_CONTINUITY) {
if (flags & 0x20)
value = 1.0; /* Beep */
else
value = 0.0;
}
/* 0x10: AVG */
/* 0x08: Diode */
if (flags & 0x04) /* REL */
analog.meaning->mqflags |= SR_MQFLAG_RELATIVE;
/* 0x02: SHIFT */
if (flags & 0x01) /* % */
analog.meaning->unit = SR_UNIT_PERCENTAGE;
/* 14, 15 */
flags = (xgittoint(devc->buf[14]) << 8) | xgittoint(devc->buf[15]);
if (!(flags & 0x80)) /* MAN: Manual range */
analog.meaning->mqflags |= SR_MQFLAG_AUTORANGE;
if (flags & 0x40) /* LOBATT1: Low battery, measurement still within specs */
devc->lowbatt = 1;
/* 0x20: PEAK */
/* 0x10: COUNT */
if (flags & 0x08) /* HOLD */
analog.meaning->mqflags |= SR_MQFLAG_HOLD;
/* 0x04: LIMIT */
if (flags & 0x02) /* MAX */
analog.meaning->mqflags |= SR_MQFLAG_MAX;
if (flags & 0x01) /* MIN */
analog.meaning->mqflags |= SR_MQFLAG_MIN;
/* 16, 17 */
flags = (xgittoint(devc->buf[16]) << 8) | xgittoint(devc->buf[17]);
/* 0xe0: undefined */
if (flags & 0x10) { /* LOBATT2: Low battery, measurement inaccurate */
devc->lowbatt = 2;
sr_warn("Low battery, measurement quality degraded!");
}
/* 0x08: SCALED */
/* 0x04: RATE (=lower resolution, allows higher data rate up to 10/s. */
/* 0x02: Current clamp */
if (flags & 0x01) { /* dB */
/*
* TODO: The Norma has an adjustable dB reference value. If
* changed from default, this is not correct.
*/
if (analog.meaning->unit == SR_UNIT_VOLT)
analog.meaning->unit = SR_UNIT_DECIBEL_VOLT;
else
analog.meaning->unit = SR_UNIT_UNITLESS;
}
/* 18, 19 */
/* flags = (xgittoint(devc->buf[18]) << 8) | xgittoint(devc->buf[19]); */
/* 0x80: Undefined. */
/* 0x40: Remote mode, keyboard locked */
/* 0x38: Undefined. */
/* 0x04: MIN > MAX */
/* 0x02: Measured value < Min */
/* 0x01: Measured value > Max */
/* 4: Flags. Evaluating this after setting value! */
flags = xgittoint(devc->buf[4]);
if (flags & 0x04) /* Invalid value */
value = NAN;
else if (flags & 0x01) /* Overload */
value = INFINITY;
if (flags & 0x02) { /* Duplicate value, has been sent before. */
sr_spew("Duplicate value, dismissing!");
devc->buflen = 0;
return;
}
sr_spew("range=%d/scale=%f/value=%f", range,
(double)scale, (double)value);
/* Finish and send packet. */
analog.meaning->channels = sdi->channels;
analog.num_samples = 1;
analog.data = &value;
memset(&packet, 0, sizeof(struct sr_datafeed_packet));
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
/* Finish processing. */
sr_sw_limits_update_samples_read(&devc->limits, 1);
devc->buflen = 0;
}
SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
{
struct sr_dev_inst *sdi;
struct sr_scpi_dev_inst *scpi;
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct sr_datafeed_logic logic;
double vdiv, offset;
int len, i, vref;
struct sr_channel *ch;
gsize expected_data_bytes;
(void)fd;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
scpi = sdi->conn;
if (!(revents == G_IO_IN || revents == 0))
return TRUE;
switch (devc->wait_event) {
case WAIT_NONE:
break;
case WAIT_TRIGGER:
if (rigol_ds_trigger_wait(sdi) != SR_OK)
return TRUE;
if (rigol_ds_channel_start(sdi) != SR_OK)
return TRUE;
return TRUE;
case WAIT_BLOCK:
if (rigol_ds_block_wait(sdi) != SR_OK)
return TRUE;
break;
case WAIT_STOP:
if (rigol_ds_stop_wait(sdi) != SR_OK)
return TRUE;
if (rigol_ds_check_stop(sdi) != SR_OK)
return TRUE;
if (rigol_ds_channel_start(sdi) != SR_OK)
return TRUE;
return TRUE;
default:
sr_err("BUG: Unknown event target encountered");
break;
}
ch = devc->channel_entry->data;
expected_data_bytes = ch->type == SR_CHANNEL_ANALOG ?
devc->analog_frame_size : devc->digital_frame_size;
if (devc->num_block_bytes == 0) {
if (devc->model->series->protocol >= PROTOCOL_V4) {
if (sr_scpi_send(sdi->conn, ":WAV:START %d",
devc->num_channel_bytes + 1) != SR_OK)
return TRUE;
if (sr_scpi_send(sdi->conn, ":WAV:STOP %d",
MIN(devc->num_channel_bytes + ACQ_BLOCK_SIZE,
devc->analog_frame_size)) != SR_OK)
return TRUE;
}
if (devc->model->series->protocol >= PROTOCOL_V3)
if (sr_scpi_send(sdi->conn, ":WAV:DATA?") != SR_OK)
return TRUE;
if (sr_scpi_read_begin(scpi) != SR_OK)
return TRUE;
if (devc->format == FORMAT_IEEE488_2) {
sr_dbg("New block header expected");
len = rigol_ds_read_header(sdi);
if (len == 0)
/* Still reading the header. */
return TRUE;
if (len == -1) {
sr_err("Read error, aborting capture.");
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
/* At slow timebases in live capture the DS2072
* sometimes returns "short" data blocks, with
* apparently no way to get the rest of the data.
* Discard these, the complete data block will
* appear eventually.
*/
if (devc->data_source == DATA_SOURCE_LIVE
&& (unsigned)len < expected_data_bytes) {
sr_dbg("Discarding short data block");
sr_scpi_read_data(scpi, (char *)devc->buffer, len + 1);
return TRUE;
}
devc->num_block_bytes = len;
} else {
devc->num_block_bytes = expected_data_bytes;
}
devc->num_block_read = 0;
}
len = devc->num_block_bytes - devc->num_block_read;
if (len > ACQ_BUFFER_SIZE)
len = ACQ_BUFFER_SIZE;
sr_dbg("Requesting read of %d bytes", len);
len = sr_scpi_read_data(scpi, (char *)devc->buffer, len);
if (len == -1) {
sr_err("Read error, aborting capture.");
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
sr_dbg("Received %d bytes.", len);
devc->num_block_read += len;
if (ch->type == SR_CHANNEL_ANALOG) {
vref = devc->vert_reference[ch->index];
vdiv = devc->vdiv[ch->index] / 25.6;
offset = devc->vert_offset[ch->index];
if (devc->model->series->protocol >= PROTOCOL_V3)
for (i = 0; i < len; i++)
devc->data[i] = ((int)devc->buffer[i] - vref) * vdiv - offset;
else
for (i = 0; i < len; i++)
devc->data[i] = (128 - devc->buffer[i]) * vdiv - offset;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = g_slist_append(NULL, ch);
analog.num_samples = len;
analog.data = devc->data;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
} else {
logic.length = len;
// TODO: For the MSO1000Z series, we need a way to express that
// this data is in fact just for a single channel, with the valid
// data for that channel in the LSB of each byte.
logic.unitsize = devc->model->series->protocol == PROTOCOL_V4 ? 1 : 2;
logic.data = devc->buffer;
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
sr_session_send(sdi, &packet);
}
if (devc->num_block_read == devc->num_block_bytes) {
sr_dbg("Block has been completed");
if (devc->model->series->protocol >= PROTOCOL_V3) {
/* Discard the terminating linefeed */
sr_scpi_read_data(scpi, (char *)devc->buffer, 1);
}
if (devc->format == FORMAT_IEEE488_2) {
/* Prepare for possible next block */
devc->num_header_bytes = 0;
devc->num_block_bytes = 0;
if (devc->data_source != DATA_SOURCE_LIVE)
rigol_ds_set_wait_event(devc, WAIT_BLOCK);
}
if (!sr_scpi_read_complete(scpi)) {
sr_err("Read should have been completed");
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
devc->num_block_read = 0;
} else {
sr_dbg("%" PRIu64 " of %" PRIu64 " block bytes read",
devc->num_block_read, devc->num_block_bytes);
}
devc->num_channel_bytes += len;
if (devc->num_channel_bytes < expected_data_bytes)
/* Don't have the full data for this channel yet, re-run. */
return TRUE;
/* End of data for this channel. */
if (devc->model->series->protocol == PROTOCOL_V3) {
/* Signal end of data download to scope */
if (devc->data_source != DATA_SOURCE_LIVE)
/*
* This causes a query error, without it switching
* to the next channel causes an error. Fun with
* firmware...
*/
rigol_ds_config_set(sdi, ":WAV:END");
}
if (devc->channel_entry->next) {
/* We got the frame for this channel, now get the next channel. */
devc->channel_entry = devc->channel_entry->next;
rigol_ds_channel_start(sdi);
} else {
/* Done with this frame. */
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
if (++devc->num_frames == devc->limit_frames) {
/* Last frame, stop capture. */
sdi->driver->dev_acquisition_stop(sdi);
} else {
/* Get the next frame, starting with the first channel. */
devc->channel_entry = devc->enabled_channels;
rigol_ds_capture_start(sdi);
/* Start of next frame. */
packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
}
}
return TRUE;
}
SR_PRIV int gwinstek_gds_800_receive_data(int fd, int revents, void *cb_data)
{
struct sr_dev_inst *sdi;
struct sr_scpi_dev_inst *scpi;
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
char command[32];
char *response;
float volts_per_division;
int num_samples, i;
float samples[MAX_SAMPLES];
uint32_t sample_rate;
char *end_ptr;
(void)fd;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
scpi = sdi->conn;
if (!(revents == G_IO_IN || revents == 0))
return TRUE;
switch (devc->state) {
case START_ACQUISITION:
if (sr_scpi_send(scpi, ":TRIG:MOD 3") != SR_OK) {
sr_err("Failed to set trigger mode to SINGLE.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
if (sr_scpi_send(scpi, ":STOP") != SR_OK) {
sr_err("Failed to put the trigger system into STOP state.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
if (sr_scpi_send(scpi, ":RUN") != SR_OK) {
sr_err("Failed to put the trigger system into RUN state.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
devc->cur_acq_channel = 0;
devc->state = START_TRANSFER_OF_CHANNEL_DATA;
break;
case START_TRANSFER_OF_CHANNEL_DATA:
if (((struct sr_channel *)g_slist_nth_data(sdi->channels, devc->cur_acq_channel))->enabled) {
if (sr_scpi_send(scpi, ":ACQ%d:MEM?", devc->cur_acq_channel+1) != SR_OK) {
sr_err("Failed to acquire memory.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
if (sr_scpi_read_begin(scpi) != SR_OK) {
sr_err("Could not begin reading SCPI response.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
devc->state = WAIT_FOR_TRANSFER_OF_BEGIN_TRANSMISSION_COMPLETE;
devc->cur_rcv_buffer_position = 0;
} else {
/* All channels acquired. */
if (devc->cur_acq_channel == ANALOG_CHANNELS - 1) {
sr_spew("All channels acquired.");
if (devc->cur_acq_frame == devc->frame_limit - 1) {
/* All frames accquired. */
sr_spew("All frames acquired.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
} else {
/* Start acquiring next frame. */
if (devc->df_started) {
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
}
devc->cur_acq_frame++;
devc->state = START_ACQUISITION;
}
} else {
/* Start acquiring next channel. */
devc->cur_acq_channel++;
}
}
break;
case WAIT_FOR_TRANSFER_OF_BEGIN_TRANSMISSION_COMPLETE:
if (read_data(sdi, scpi, devc, 1) == SR_OK) {
if (devc->rcv_buffer[0] == '#')
devc->state = WAIT_FOR_TRANSFER_OF_DATA_SIZE_DIGIT_COMPLETE;
}
break;
case WAIT_FOR_TRANSFER_OF_DATA_SIZE_DIGIT_COMPLETE:
if (read_data(sdi, scpi, devc, 1) == SR_OK) {
if (devc->rcv_buffer[0] != '4' &&
devc->rcv_buffer[0] != '5' &&
devc->rcv_buffer[0] != '6') {
sr_err("Data size digits is not 4, 5 or 6 but "
"'%c'.", devc->rcv_buffer[0]);
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
} else {
devc->data_size_digits = devc->rcv_buffer[0] - '0';
devc->state = WAIT_FOR_TRANSFER_OF_DATA_SIZE_COMPLETE;
}
}
break;
case WAIT_FOR_TRANSFER_OF_DATA_SIZE_COMPLETE:
if (read_data(sdi, scpi, devc, devc->data_size_digits) == SR_OK) {
devc->rcv_buffer[devc->data_size_digits] = 0;
if (sr_atoi(devc->rcv_buffer, &devc->data_size) != SR_OK) {
sr_err("Could not parse data size '%s'", devc->rcv_buffer);
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
} else
devc->state = WAIT_FOR_TRANSFER_OF_SAMPLE_RATE_COMPLETE;
}
break;
case WAIT_FOR_TRANSFER_OF_SAMPLE_RATE_COMPLETE:
if (read_data(sdi, scpi, devc, sizeof(float)) == SR_OK) {
/*
* Contrary to the documentation, this field is
* transfered with most significant byte first!
*/
sample_rate = RB32(devc->rcv_buffer);
memcpy(&devc->sample_rate, &sample_rate, sizeof(float));
devc->state = WAIT_FOR_TRANSFER_OF_CHANNEL_INDICATOR_COMPLETE;
if (!devc->df_started) {
std_session_send_df_header(sdi);
packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
devc->df_started = TRUE;
}
}
break;
case WAIT_FOR_TRANSFER_OF_CHANNEL_INDICATOR_COMPLETE:
if (read_data(sdi, scpi, devc, 1) == SR_OK)
devc->state = WAIT_FOR_TRANSFER_OF_RESERVED_DATA_COMPLETE;
break;
case WAIT_FOR_TRANSFER_OF_RESERVED_DATA_COMPLETE:
if (read_data(sdi, scpi, devc, 3) == SR_OK)
devc->state = WAIT_FOR_TRANSFER_OF_CHANNEL_DATA_COMPLETE;
break;
case WAIT_FOR_TRANSFER_OF_CHANNEL_DATA_COMPLETE:
if (read_data(sdi, scpi, devc, devc->data_size - 8) == SR_OK) {
/* Fetch data needed for conversion from device. */
snprintf(command, sizeof(command), ":CHAN%d:SCAL?",
devc->cur_acq_channel + 1);
if (sr_scpi_get_string(scpi, command, &response) != SR_OK) {
sr_err("Failed to get volts per division.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
}
volts_per_division = g_ascii_strtod(response, &end_ptr);
if (!strcmp(end_ptr, "mV"))
volts_per_division *= 1.e-3;
g_free(response);
num_samples = (devc->data_size - 8) / 2;
sr_spew("Received %d number of samples from channel "
"%d.", num_samples, devc->cur_acq_channel + 1);
float vbit = volts_per_division * VERTICAL_DIVISIONS / 256.0;
float vbitlog = log10f(vbit);
int digits = -(int)vbitlog + (vbitlog < 0.0);
/* Convert data. */
for (i = 0; i < num_samples; i++)
samples[i] = ((float) ((int16_t) (RB16(&devc->rcv_buffer[i*2])))) * vbit;
/* Fill frame. */
sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
analog.meaning->channels = g_slist_append(NULL, g_slist_nth_data(sdi->channels, devc->cur_acq_channel));
analog.num_samples = num_samples;
analog.data = samples;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
/* All channels acquired. */
if (devc->cur_acq_channel == ANALOG_CHANNELS - 1) {
sr_spew("All channels acquired.");
if (devc->cur_acq_frame == devc->frame_limit - 1) {
/* All frames acquired. */
sr_spew("All frames acquired.");
sdi->driver->dev_acquisition_stop(sdi);
return TRUE;
} else {
/* Start acquiring next frame. */
if (devc->df_started) {
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
packet.type = SR_DF_FRAME_BEGIN;
sr_session_send(sdi, &packet);
}
devc->cur_acq_frame++;
devc->state = START_ACQUISITION;
}
} else {
/* Start acquiring next channel. */
devc->state = START_TRANSFER_OF_CHANNEL_DATA;
devc->cur_acq_channel++;
return TRUE;
}
}
break;
}
return TRUE;
}
static int recv_log(const struct sr_dev_inst *sdi, GMatchInfo *match,
const int mqs[], const int units[], const int exponents[],
unsigned int num_functions)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
char *mstr;
unsigned function;
int value, negative, overload, exponent, alternate_unit, mq, unit;
int mqflags = 0;
float fvalue;
sr_spew("LOG response '%s'.", g_match_info_get_string(match));
devc = sdi->priv;
mstr = g_match_info_fetch(match, 2);
if (sr_atoi(mstr, (int*)&function) != SR_OK || function >= num_functions) {
g_free(mstr);
sr_dbg("Invalid function.");
return SR_ERR;
}
g_free(mstr);
mstr = g_match_info_fetch(match, 3);
if (sr_atoi(mstr, &value) != SR_OK) {
g_free(mstr);
sr_dbg("Invalid value.");
return SR_ERR;
}
g_free(mstr);
mstr = g_match_info_fetch(match, 1);
negative = mstr[7] & 2 ? -1 : 1;
overload = mstr[8] & 4;
exponent = (mstr[9] & 0xF) + exponents[function];
alternate_unit = mstr[10] & 1;
if (mstr[ 8] & 1) mqflags |= SR_MQFLAG_DC;
if (mstr[ 8] & 2) mqflags |= SR_MQFLAG_AC;
if (mstr[11] & 4) mqflags |= SR_MQFLAG_RELATIVE;
if (mstr[12] & 1) mqflags |= SR_MQFLAG_AVG;
if (mstr[12] & 2) mqflags |= SR_MQFLAG_MIN;
if (mstr[12] & 4) mqflags |= SR_MQFLAG_MAX;
if (function == 5) mqflags |= SR_MQFLAG_DIODE | SR_MQFLAG_DC;
g_free(mstr);
mq = mqs[function];
unit = units[function];
if (alternate_unit) {
if (mq == SR_MQ_RESISTANCE)
mq = SR_MQ_CONTINUITY;
if (unit == SR_UNIT_DECIBEL_MW)
unit = SR_UNIT_DECIBEL_VOLT;
if (unit == SR_UNIT_CELSIUS) {
unit = SR_UNIT_FAHRENHEIT;
if (devc->profile->model == KEYSIGHT_U1281 ||
devc->profile->model == KEYSIGHT_U1282)
exponent--;
}
}
if (overload)
fvalue = NAN;
else
fvalue = negative * value * powf(10, exponent);
sr_analog_init(&analog, &encoding, &meaning, &spec, -exponent);
analog.meaning->mq = mq;
analog.meaning->unit = unit;
analog.meaning->mqflags = mqflags;
analog.meaning->channels = g_slist_append(NULL, devc->cur_channel);
analog.num_samples = 1;
analog.data = &fvalue;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
sr_sw_limits_update_samples_read(&devc->limits, 1);
devc->cur_sample++;
return JOB_LOG;
}
static void mso_send_data_proc(struct sr_dev_inst *sdi,
uint8_t *data, size_t length, size_t sample_width)
{
size_t i;
struct dev_context *devc;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
(void)sample_width;
devc = sdi->priv;
length /= 2;
/* Send the logic */
for (i = 0; i < length; i++) {
devc->logic_buffer[i] = data[i * 2];
/* Rescale to -10V - +10V from 0-255. */
devc->analog_buffer[i] = (data[i * 2 + 1] - 128.0f) / 12.8f;
};
const struct sr_datafeed_logic logic = {
.length = length,
.unitsize = 1,
.data = devc->logic_buffer
};
const struct sr_datafeed_packet logic_packet = {
.type = SR_DF_LOGIC,
.payload = &logic
};
sr_session_send(sdi, &logic_packet);
sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
analog.meaning->channels = devc->enabled_analog_channels;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0 /* SR_MQFLAG_DC */;
analog.num_samples = length;
analog.data = devc->analog_buffer;
const struct sr_datafeed_packet analog_packet = {
.type = SR_DF_ANALOG,
.payload = &analog
};
sr_session_send(sdi, &analog_packet);
}
static void la_send_data_proc(struct sr_dev_inst *sdi,
uint8_t *data, size_t length, size_t sample_width)
{
const struct sr_datafeed_logic logic = {
.length = length,
.unitsize = sample_width,
.data = data
};
const struct sr_datafeed_packet packet = {
.type = SR_DF_LOGIC,
.payload = &logic
};
sr_session_send(sdi, &packet);
}
static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
{
struct sr_dev_inst *sdi;
struct dev_context *devc;
gboolean packet_has_error = FALSE;
unsigned int num_samples;
int trigger_offset, cur_sample_count, unitsize;
int pre_trigger_samples;
sdi = transfer->user_data;
devc = sdi->priv;
/*
* If acquisition has already ended, just free any queued up
* transfer that come in.
*/
if (devc->acq_aborted) {
free_transfer(transfer);
return;
}
sr_dbg("receive_transfer(): status %s received %d bytes.",
libusb_error_name(transfer->status), transfer->actual_length);
/* Save incoming transfer before reusing the transfer struct. */
unitsize = devc->sample_wide ? 2 : 1;
cur_sample_count = transfer->actual_length / unitsize;
switch (transfer->status) {
case LIBUSB_TRANSFER_NO_DEVICE:
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
return;
case LIBUSB_TRANSFER_COMPLETED:
case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
break;
default:
packet_has_error = TRUE;
break;
}
if (transfer->actual_length == 0 || packet_has_error) {
devc->empty_transfer_count++;
if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
/*
* The FX2 gave up. End the acquisition, the frontend
* will work out that the samplecount is short.
*/
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
} else {
resubmit_transfer(transfer);
}
return;
} else {
devc->empty_transfer_count = 0;
}
if (devc->trigger_fired) {
if (!devc->limit_samples || devc->sent_samples < devc->limit_samples) {
/* Send the incoming transfer to the session bus. */
if (devc->limit_samples && devc->sent_samples + cur_sample_count > devc->limit_samples)
num_samples = devc->limit_samples - devc->sent_samples;
else
num_samples = cur_sample_count;
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,
transfer->buffer, transfer->actual_length, &pre_trigger_samples);
if (trigger_offset > -1) {
devc->sent_samples += pre_trigger_samples;
num_samples = cur_sample_count - trigger_offset;
if (devc->limit_samples &&
num_samples > devc->limit_samples - devc->sent_samples)
num_samples = devc->limit_samples - devc->sent_samples;
devc->send_data_proc(sdi, (uint8_t *)transfer->buffer
+ trigger_offset * unitsize,
num_samples * unitsize, unitsize);
devc->sent_samples += num_samples;
devc->trigger_fired = TRUE;
}
}
if (devc->limit_samples && devc->sent_samples >= devc->limit_samples) {
fx2lafw_abort_acquisition(devc);
free_transfer(transfer);
} else
resubmit_transfer(transfer);
}
static int configure_channels(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
const GSList *l;
int p;
struct sr_channel *ch;
uint32_t channel_mask = 0, num_analog = 0;
devc = sdi->priv;
g_slist_free(devc->enabled_analog_channels);
devc->enabled_analog_channels = NULL;
for (l = sdi->channels, p = 0; l; l = l->next, p++) {
ch = l->data;
if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)
&& (ch->enabled)) {
num_analog++;
devc->enabled_analog_channels =
g_slist_append(devc->enabled_analog_channels, ch);
} else {
channel_mask |= ch->enabled << p;
}
}
/*
* Use wide sampling if either any of the LA channels 8..15 is enabled,
* and/or at least one analog channel is enabled.
*/
devc->sample_wide = channel_mask > 0xff || num_analog > 0;
return SR_OK;
}
static unsigned int to_bytes_per_ms(unsigned int samplerate)
{
return samplerate / 1000;
}
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->cur_samplerate);
return (s + 511) & ~511;
}
static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_channel *ch;
struct sr_channel_group *cg, *acg;
struct sr_config *src;
struct analog_gen *ag;
GSList *l;
int num_logic_channels, num_analog_channels, pattern, i;
char channel_name[16];
num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS;
num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS;
for (l = options; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_NUM_LOGIC_CHANNELS:
num_logic_channels = g_variant_get_int32(src->data);
break;
case SR_CONF_NUM_ANALOG_CHANNELS:
num_analog_channels = g_variant_get_int32(src->data);
break;
}
}
sdi = g_malloc0(sizeof(struct sr_dev_inst));
sdi->status = SR_ST_INACTIVE;
sdi->model = g_strdup("Demo device");
devc = g_malloc0(sizeof(struct dev_context));
devc->cur_samplerate = SR_KHZ(200);
devc->num_logic_channels = num_logic_channels;
devc->logic_unitsize = (devc->num_logic_channels + 7) / 8;
devc->logic_pattern = PATTERN_SIGROK;
devc->num_analog_channels = num_analog_channels;
if (num_logic_channels > 0) {
/* Logic channels, all in one channel group. */
cg = g_malloc0(sizeof(struct sr_channel_group));
cg->name = g_strdup("Logic");
for (i = 0; i < num_logic_channels; i++) {
sprintf(channel_name, "D%d", i);
ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
cg->channels = g_slist_append(cg->channels, ch);
}
sdi->channel_groups = g_slist_append(NULL, cg);
}
/* Analog channels, channel groups and pattern generators. */
if (num_analog_channels > 0) {
pattern = 0;
/* An "Analog" channel group with all analog channels in it. */
acg = g_malloc0(sizeof(struct sr_channel_group));
acg->name = g_strdup("Analog");
sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);
devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
for (i = 0; i < num_analog_channels; i++) {
snprintf(channel_name, 16, "A%d", i);
ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG,
TRUE, channel_name);
acg->channels = g_slist_append(acg->channels, ch);
/* Every analog channel gets its own channel group as well. */
cg = g_malloc0(sizeof(struct sr_channel_group));
cg->name = g_strdup(channel_name);
cg->channels = g_slist_append(NULL, ch);
sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
/* Every channel gets a generator struct. */
ag = g_malloc(sizeof(struct analog_gen));
ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
ag->packet.meaning->channels = cg->channels;
ag->packet.meaning->mq = 0;
ag->packet.meaning->mqflags = 0;
ag->packet.meaning->unit = SR_UNIT_VOLT;
ag->packet.data = ag->pattern_data;
ag->pattern = pattern;
ag->avg_val = 0.0f;
ag->num_avgs = 0;
g_hash_table_insert(devc->ch_ag, ch, ag);
if (++pattern == ARRAY_SIZE(analog_pattern_str))
pattern = 0;
}
}
sdi->priv = devc;
return std_scan_complete(di, g_slist_append(NULL, sdi));
}
static void decode_buf(struct sr_dev_inst *sdi, unsigned char *data)
{
struct sr_datafeed_packet packet;
struct sr_datafeed_analog2 analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct dev_context *devc;
long factor, ivalue;
uint8_t digits[4];
gboolean is_duty, is_continuity, is_diode, is_ac, is_dc, is_auto;
gboolean is_hold, is_max, is_min, is_relative, minus;
float fvalue;
devc = sdi->priv;
digits[0] = decode_digit(data[12]);
digits[1] = decode_digit(data[11]);
digits[2] = decode_digit(data[10]);
digits[3] = decode_digit(data[9]);
if (digits[0] == 0x0f && digits[1] == 0x00 && digits[2] == 0x0a &&
digits[3] == 0x0f)
/* The "over limit" (OL) display comes through like this */
ivalue = -1;
else if (digits[0] > 9 || digits[1] > 9 || digits[2] > 9 || digits[3] > 9)
/* An invalid digit in any position denotes no value. */
ivalue = -2;
else {
ivalue = digits[0] * 1000;
ivalue += digits[1] * 100;
ivalue += digits[2] * 10;
ivalue += digits[3];
}
/* Decimal point position */
factor = 0;
switch (data[7] >> 4) {
case 0x00:
factor = 0;
break;
case 0x02:
factor = 1;
break;
case 0x04:
factor = 2;
break;
case 0x08:
factor = 3;
break;
default:
sr_err("Unknown decimal point byte: 0x%.2x.", data[7]);
break;
}
/* Minus flag */
minus = data[2] & 0x01;
/* Mode detail symbols on the right side of the digits */
is_duty = is_continuity = is_diode = FALSE;
switch (data[4]) {
case 0x00:
/* None. */
break;
case 0x01:
/* Micro */
factor += 6;
break;
case 0x02:
/* Milli */
factor += 3;
break;
case 0x04:
/* Kilo */
ivalue *= 1000;
break;
case 0x08:
/* Mega */
ivalue *= 1000000;
break;
case 0x10:
/* Continuity shows up as Ohm + this bit */
is_continuity = TRUE;
break;
case 0x20:
/* Diode tester is Volt + this bit */
is_diode = TRUE;
break;
case 0x40:
is_duty = TRUE;
break;
case 0x80:
/* Never seen */
sr_dbg("Unknown mode right detail: 0x%.2x.", data[4]);
break;
default:
sr_dbg("Unknown/invalid mode right detail: 0x%.2x.", data[4]);
break;
}
/* Scale flags on the right, continued */
is_max = is_min = FALSE;
if (data[5] & 0x04)
is_max = TRUE;
if (data[5] & 0x08)
is_min = TRUE;
if (data[5] & 0x40)
/* Nano */
factor += 9;
/* Mode detail symbols on the left side of the digits */
is_auto = is_dc = is_ac = is_hold = is_relative = FALSE;
if (data[6] & 0x04)
is_auto = TRUE;
if (data[6] & 0x08)
is_dc = TRUE;
if (data[6] & 0x10)
is_ac = TRUE;
if (data[6] & 0x20)
is_relative = TRUE;
if (data[6] & 0x40)
is_hold = TRUE;
fvalue = (float)ivalue / pow(10, factor);
if (minus)
fvalue = -fvalue;
sr_analog_init(&analog, &encoding, &meaning, &spec, 4);
/* Measurement mode */
meaning.channels = sdi->channels;
meaning.mq = 0;
switch (data[3]) {
case 0x00:
if (is_duty) {
meaning.mq = SR_MQ_DUTY_CYCLE;
meaning.unit = SR_UNIT_PERCENTAGE;
} else
sr_dbg("Unknown measurement mode: %.2x.", data[3]);
break;
case 0x01:
if (is_diode) {
meaning.mq = SR_MQ_VOLTAGE;
meaning.unit = SR_UNIT_VOLT;
meaning.mqflags |= SR_MQFLAG_DIODE;
if (ivalue < 0)
fvalue = NAN;
} else {
if (ivalue < 0)
break;
meaning.mq = SR_MQ_VOLTAGE;
meaning.unit = SR_UNIT_VOLT;
if (is_ac)
meaning.mqflags |= SR_MQFLAG_AC;
if (is_dc)
meaning.mqflags |= SR_MQFLAG_DC;
}
break;
case 0x02:
meaning.mq = SR_MQ_CURRENT;
meaning.unit = SR_UNIT_AMPERE;
if (is_ac)
meaning.mqflags |= SR_MQFLAG_AC;
if (is_dc)
meaning.mqflags |= SR_MQFLAG_DC;
break;
case 0x04:
if (is_continuity) {
meaning.mq = SR_MQ_CONTINUITY;
meaning.unit = SR_UNIT_BOOLEAN;
fvalue = ivalue < 0 ? 0.0 : 1.0;
} else {
meaning.mq = SR_MQ_RESISTANCE;
meaning.unit = SR_UNIT_OHM;
if (ivalue < 0)
fvalue = INFINITY;
}
break;
case 0x08:
/* Never seen */
sr_dbg("Unknown measurement mode: 0x%.2x.", data[3]);
break;
case 0x10:
meaning.mq = SR_MQ_FREQUENCY;
meaning.unit = SR_UNIT_HERTZ;
break;
case 0x20:
meaning.mq = SR_MQ_CAPACITANCE;
meaning.unit = SR_UNIT_FARAD;
break;
case 0x40:
meaning.mq = SR_MQ_TEMPERATURE;
meaning.unit = SR_UNIT_CELSIUS;
break;
case 0x80:
meaning.mq = SR_MQ_TEMPERATURE;
meaning.unit = SR_UNIT_FAHRENHEIT;
break;
default:
sr_dbg("Unknown/invalid measurement mode: 0x%.2x.", data[3]);
break;
}
if (meaning.mq == 0)
return;
if (is_auto)
meaning.mqflags |= SR_MQFLAG_AUTORANGE;
if (is_hold)
meaning.mqflags |= SR_MQFLAG_HOLD;
if (is_max)
meaning.mqflags |= SR_MQFLAG_MAX;
if (is_min)
meaning.mqflags |= SR_MQFLAG_MIN;
if (is_relative)
meaning.mqflags |= SR_MQFLAG_RELATIVE;
analog.data = &fvalue;
analog.num_samples = 1;
packet.type = SR_DF_ANALOG2;
packet.payload = &analog;
sr_session_send(devc->cb_data, &packet);
devc->num_samples++;
}
SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
const struct sr_dev_inst *sdi;
struct sr_channel *next_channel;
struct sr_scpi_dev_inst *scpi;
struct pps_channel *pch;
const struct channel_spec *ch_spec;
float f;
int cmd;
(void)fd;
(void)revents;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
scpi = sdi->conn;
/* Retrieve requested value for this state. */
if (sr_scpi_get_float(scpi, NULL, &f) == SR_OK) {
pch = devc->cur_channel->priv;
ch_spec = &devc->device->channels[pch->hw_output_idx];
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
/* Note: digits/spec_digits will be overridden later. */
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
analog.meaning->channels = g_slist_append(NULL, devc->cur_channel);
analog.num_samples = 1;
analog.meaning->mq = pch->mq;
if (pch->mq == SR_MQ_VOLTAGE) {
analog.meaning->unit = SR_UNIT_VOLT;
analog.encoding->digits = ch_spec->voltage[4];
analog.spec->spec_digits = ch_spec->voltage[3];
} else if (pch->mq == SR_MQ_CURRENT) {
analog.meaning->unit = SR_UNIT_AMPERE;
analog.encoding->digits = ch_spec->current[4];
analog.spec->spec_digits = ch_spec->current[3];
} else if (pch->mq == SR_MQ_POWER) {
analog.meaning->unit = SR_UNIT_WATT;
analog.encoding->digits = ch_spec->power[4];
analog.spec->spec_digits = ch_spec->power[3];
}
analog.meaning->mqflags = SR_MQFLAG_DC;
analog.data = &f;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
}
if (g_slist_length(sdi->channels) > 1) {
next_channel = sr_next_enabled_channel(sdi, devc->cur_channel);
if (select_channel(sdi, next_channel) != SR_OK) {
sr_err("Failed to select channel %s", next_channel->name);
return FALSE;
}
}
pch = devc->cur_channel->priv;
if (pch->mq == SR_MQ_VOLTAGE)
cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
else if (pch->mq == SR_MQ_FREQUENCY)
cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
else if (pch->mq == SR_MQ_CURRENT)
cmd = SCPI_CMD_GET_MEAS_CURRENT;
else if (pch->mq == SR_MQ_POWER)
cmd = SCPI_CMD_GET_MEAS_POWER;
else
return SR_ERR;
scpi_cmd(sdi, devc->device->commands, cmd);
return TRUE;
}
static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
int num_samples)
{
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct dev_context *devc = sdi->priv;
GSList *channels = devc->enabled_channels;
const float ch_bit[] = { RANGE(0) / 255, RANGE(1) / 255 };
const float ch_center[] = { RANGE(0) / 2, RANGE(1) / 2 };
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
analog.num_samples = num_samples;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;
analog.meaning->mqflags = 0;
analog.data = g_try_malloc(num_samples * sizeof(float));
if (!analog.data) {
sr_err("Analog data buffer malloc failed.");
devc->dev_state = STOPPING;
return;
}
for (int ch = 0; ch < 2; ch++) {
if (!devc->ch_enabled[ch])
continue;
float vdivlog = log10f(ch_bit[ch]);
int digits = -(int)vdivlog + (vdivlog < 0.0);
analog.encoding->digits = digits;
analog.spec->spec_digits = digits;
analog.meaning->channels = g_slist_append(NULL, channels->data);
for (int i = 0; i < num_samples; i++) {
/*
* The device always sends data for both channels. If a channel
* is disabled, it contains a copy of the enabled channel's
* data. However, we only send the requested channels to
* the bus.
*
* Voltage values are encoded as a value 0-255, where the
* value is a point in the range represented by the vdiv
* setting. There are 10 vertical divs, so e.g. 500mV/div
* represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V.
*/
((float *)analog.data)[i] = ch_bit[ch] * *(buf + i * 2 + ch) - ch_center[ch];
}
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
channels = channels->next;
}
g_free(analog.data);
}
static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
struct sr_analog_encoding encoding;
struct sr_analog_meaning meaning;
struct sr_analog_spec spec;
struct sr_channel *prev_chan;
float fvalue;
const char *s;
char *mstr;
int i, exp;
sr_spew("FETC reply '%s'.", g_match_info_get_string(match));
devc = sdi->priv;
i = devc->cur_channel->index;
if (devc->cur_mq[i] == -1)
/* This detects when channel P2 is reporting TEMP as an identical
* copy of channel P3. In this case, we just skip P2. */
goto skip_value;
s = g_match_info_get_string(match);
if (!strcmp(s, "-9.90000000E+37") || !strcmp(s, "+9.90000000E+37")) {
/* An invalid measurement shows up on the display as "O.L", but
* comes through like this. Since comparing 38-digit floats
* is rather problematic, we'll cut through this here. */
fvalue = NAN;
} else {
mstr = g_match_info_fetch(match, 1);
if (sr_atof_ascii(mstr, &fvalue) != SR_OK) {
g_free(mstr);
sr_dbg("Invalid float.");
return SR_ERR;
}
g_free(mstr);
if (devc->cur_exponent[i] != 0)
fvalue *= powf(10, devc->cur_exponent[i]);
}
if (devc->cur_unit[i] == SR_UNIT_DECIBEL_MW ||
devc->cur_unit[i] == SR_UNIT_DECIBEL_VOLT ||
devc->cur_unit[i] == SR_UNIT_PERCENTAGE) {
mstr = g_match_info_fetch(match, 2);
if (mstr && sr_atoi(mstr, &exp) == SR_OK) {
devc->cur_digits[i] = MIN(4 - exp, devc->cur_digits[i]);
devc->cur_encoding[i] = MIN(5 - exp, devc->cur_encoding[i]);
}
g_free(mstr);
}
sr_analog_init(&analog, &encoding, &meaning, &spec,
devc->cur_digits[i] - devc->cur_exponent[i]);
analog.meaning->mq = devc->cur_mq[i];
analog.meaning->unit = devc->cur_unit[i];
analog.meaning->mqflags = devc->cur_mqflags[i];
analog.meaning->channels = g_slist_append(NULL, devc->cur_channel);
analog.num_samples = 1;
analog.data = &fvalue;
encoding.digits = devc->cur_encoding[i] - devc->cur_exponent[i];
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(sdi, &packet);
g_slist_free(analog.meaning->channels);
sr_sw_limits_update_samples_read(&devc->limits, 1);
skip_value:
prev_chan = devc->cur_channel;
devc->cur_channel = sr_next_enabled_channel(sdi, devc->cur_channel);
if (devc->cur_channel->index > prev_chan->index)
return JOB_AGAIN;
else
return JOB_FETC;
}