#include <stdlib.h>
#include <sys/time.h>
#include <string.h>
+#include <math.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
-#define LASCAR_VENDOR "Lascar"
-#define LASCAR_INTERFACE 0
-#define LASCAR_EP_IN 0x82
-#define LASCAR_EP_OUT 2
-/* Max 100ms for a device to positively identify. */
-#define SCAN_TIMEOUT 100000
-
extern struct sr_dev_driver lascar_el_usb_driver_info;
static struct sr_dev_driver *di = &lascar_el_usb_driver_info;
{ 8, "EL-USB-LITE", LOG_UNSUPPORTED },
{ 9, "EL-USB-CO", LOG_CO },
{ 10, "EL-USB-TC", LOG_UNSUPPORTED },
- { 11, "EL-USB-CO300", LOG_UNSUPPORTED },
- { 12, "EL-USB-2-LCD", LOG_UNSUPPORTED },
- { 13, "EL-USB-2+", LOG_UNSUPPORTED },
+ { 11, "EL-USB-CO300", LOG_CO },
+ { 12, "EL-USB-2-LCD", LOG_TEMP_RH },
+ { 13, "EL-USB-2+", LOG_TEMP_RH },
{ 14, "EL-USB-1-PRO", LOG_UNSUPPORTED },
{ 15, "EL-USB-TC-LCD", LOG_UNSUPPORTED },
- { 16, "EL-USB-2-LCD+", LOG_UNSUPPORTED },
+ { 16, "EL-USB-2-LCD+", LOG_TEMP_RH },
{ 17, "EL-USB-5", LOG_UNSUPPORTED },
{ 18, "EL-USB-1-RCG", LOG_UNSUPPORTED },
{ 19, "EL-USB-1-LCD", LOG_UNSUPPORTED },
};
-static void scan_xfer(struct libusb_transfer *xfer)
+static libusb_device_handle *lascar_open(struct libusb_device *dev)
+{
+ libusb_device_handle *dev_hdl;
+ int ret;
+
+ if ((ret = libusb_open(dev, &dev_hdl)) != 0) {
+ sr_dbg("failed to open device for scan: %s",
+ libusb_error_name(ret));
+ return NULL;
+ }
+
+ /* Some of these fail, but it needs doing -- some sort of mode
+ * setup for the SILabs F32x. */
+ libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
+ 0x00, 0xffff, 0x00, NULL, 0, 50);
+ libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
+ 0x02, 0x0002, 0x00, NULL, 0, 50);
+ libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
+ 0x02, 0x0001, 0x00, NULL, 0, 50);
+
+ return dev_hdl;
+}
+
+static void mark_xfer(struct libusb_transfer *xfer)
{
xfer->user_data = GINT_TO_POINTER(1);
}
-static struct sr_dev_inst *lascar_identify(libusb_device_handle *dev_hdl)
+SR_PRIV int lascar_get_config(libusb_device_handle *dev_hdl,
+ unsigned char *configblock, int *configlen)
{
struct drv_context *drvc;
- const struct elusb_profile *profile;
- struct sr_dev_inst *sdi;
struct libusb_transfer *xfer_in, *xfer_out;
struct timeval tv;
int64_t start;
- int modelid, buflen, i;
- unsigned char cmd[3], buf[256];
- char firmware[5];
+ int buflen;
+ unsigned char cmd[3], buf[MAX_CONFIGBLOCK_SIZE];
- drvc = di->priv;
- modelid = 0;
+ sr_spew("Reading config block.");
- /* Some of these fail, but it needs doing -- some sort of mode
- * setup for the SILabs F32x. */
- libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
- 0x00, 0xffff, 0x00, buf, 0, 50);
- libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
- 0x02, 0x0002, 0x00, buf, 0, 50);
- libusb_control_transfer(dev_hdl, LIBUSB_REQUEST_TYPE_VENDOR,
- 0x02, 0x0001, 0x00, buf, 0, 50);
+ drvc = di->priv;
+ *configlen = 0;
if (!(xfer_in = libusb_alloc_transfer(0)) ||
!(xfer_out = libusb_alloc_transfer(0)))
- return 0;
+ return SR_ERR;
/* Flush anything the F321 still has queued. */
while (libusb_bulk_transfer(dev_hdl, LASCAR_EP_IN, buf, 256, &buflen,
/* Keep a read request waiting in the wings, ready to pounce
* the moment the device sends something. */
libusb_fill_bulk_transfer(xfer_in, dev_hdl, LASCAR_EP_IN,
- buf, 256, scan_xfer, 0, 10000);
+ buf, 256, mark_xfer, 0, 10000);
if (libusb_submit_transfer(xfer_in) != 0)
goto cleanup;
cmd[1] = 0xff;
cmd[2] = 0xff;
libusb_fill_bulk_transfer(xfer_out, dev_hdl, LASCAR_EP_OUT,
- cmd, 3, scan_xfer, 0, 100);
+ cmd, 3, mark_xfer, 0, 100);
if (libusb_submit_transfer(xfer_out) != 0)
goto cleanup;
}
/* Got configuration structure header. */
- sr_spew("response to config request: 0x%.2x 0x%.2x 0x%.2x ",
+ sr_spew("Response to config request: 0x%.2x 0x%.2x 0x%.2x ",
buf[0], buf[1], buf[2]);
buflen = buf[1] | (buf[2] << 8);
- if (buf[0] != 0x02 || buflen > 256) {
+ if (buf[0] != 0x02 || buflen > MAX_CONFIGBLOCK_SIZE) {
sr_dbg("Invalid response to config request: "
"0x%.2x 0x%.2x 0x%.2x ", buf[0], buf[1], buf[2]);
libusb_close(dev_hdl);
xfer_in->actual_length);
goto cleanup;
}
- modelid = buf[0];
+
+ memcpy(configblock, buf, buflen);
+ *configlen = buflen;
+
+cleanup:
+ if (!xfer_in->user_data || !xfer_in->user_data) {
+ if (!xfer_in->user_data)
+ libusb_cancel_transfer(xfer_in);
+ if (!xfer_out->user_data)
+ libusb_cancel_transfer(xfer_out);
+ start = g_get_monotonic_time();
+ while (!xfer_in->user_data || !xfer_out->user_data) {
+ if (g_get_monotonic_time() - start > 10000)
+ break;
+ g_usleep(1000);
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+ }
+ }
+ libusb_free_transfer(xfer_in);
+ libusb_free_transfer(xfer_out);
+
+ return *configlen ? SR_OK : SR_ERR;
+}
+
+static int lascar_save_config(libusb_device_handle *dev_hdl,
+ unsigned char *config, int configlen)
+{
+ struct drv_context *drvc;
+ struct libusb_transfer *xfer_in, *xfer_out;
+ struct timeval tv;
+ int64_t start;
+ int buflen, ret;
+ unsigned char cmd[3], buf[256];
+
+ sr_spew("Writing config block.");
+
+ drvc = di->priv;
+
+ if (!(xfer_in = libusb_alloc_transfer(0)) ||
+ !(xfer_out = libusb_alloc_transfer(0)))
+ return SR_ERR;
+
+ /* Flush anything the F321 still has queued. */
+ while (libusb_bulk_transfer(dev_hdl, LASCAR_EP_IN, buf, 256, &buflen,
+ 5) == 0 && buflen > 0)
+ ;
+ ret = SR_OK;
+
+ /* Keep a read request waiting in the wings, ready to pounce
+ * the moment the device sends something. */
+ libusb_fill_bulk_transfer(xfer_in, dev_hdl, LASCAR_EP_IN,
+ buf, 256, mark_xfer, 0, 10000);
+ if (libusb_submit_transfer(xfer_in) != 0) {
+ ret = SR_ERR;
+ goto cleanup;
+ }
+
+ /* Request device configuration structure. */
+ cmd[0] = 0x01;
+ cmd[1] = configlen & 0xff;
+ cmd[2] = (configlen >> 8) & 0xff;
+ libusb_fill_bulk_transfer(xfer_out, dev_hdl, LASCAR_EP_OUT,
+ cmd, 3, mark_xfer, 0, 100);
+ if (libusb_submit_transfer(xfer_out) != 0) {
+ ret = SR_ERR;
+ goto cleanup;
+ }
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ while (!xfer_out->user_data) {
+ g_usleep(5000);
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+ }
+
+ libusb_fill_bulk_transfer(xfer_out, dev_hdl, LASCAR_EP_OUT,
+ config, configlen, mark_xfer, 0, 100);
+ if (libusb_submit_transfer(xfer_out) != 0) {
+ ret = SR_ERR;
+ goto cleanup;
+ }
+ while (!xfer_in->user_data || !xfer_out->user_data) {
+ g_usleep(5000);
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+ }
+
+ if (xfer_in->actual_length != 1 || buf[0] != 0xff) {
+ sr_dbg("unexpected response after transfer");
+ ret = SR_ERR;
+ }
cleanup:
if (!xfer_in->user_data || !xfer_in->user_data) {
libusb_free_transfer(xfer_in);
libusb_free_transfer(xfer_out);
+ return ret;
+}
+
+static struct sr_dev_inst *lascar_identify(unsigned char *config)
+{
+ struct dev_context *devc;
+ const struct elusb_profile *profile;
+ struct sr_dev_inst *sdi;
+ struct sr_channel *ch;
+ int modelid, i;
+ char firmware[5];
+
+ modelid = config[0];
sdi = NULL;
if (modelid) {
profile = NULL;
return NULL;
}
- i = buf[52] | (buf[53] << 8);
- memcpy(firmware, buf + 0x30, 4);
+ i = config[52] | (config[53] << 8);
+ memcpy(firmware, config + 0x30, 4);
firmware[4] = '\0';
sr_dbg("found %s with firmware version %s serial %d",
profile->modelname, firmware, i);
profile->modelname, firmware)))
return NULL;
sdi->driver = di;
+
+ if (profile->logformat == LOG_TEMP_RH) {
+ /* Model this as two channels: temperature and humidity. */
+ if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "Temp")))
+ return NULL;
+ sdi->channels = g_slist_append(NULL, ch);
+ if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "Hum")))
+ return NULL;
+ sdi->channels = g_slist_append(sdi->channels, ch);
+ } else if (profile->logformat == LOG_CO) {
+ if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "CO")))
+ return NULL;
+ sdi->channels = g_slist_append(NULL, ch);
+ } else {
+ if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1")))
+ return NULL;
+ sdi->channels = g_slist_append(NULL, ch);
+ }
+
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
+ return NULL;
+ sdi->priv = devc;
+ devc->profile = profile;
}
return sdi;
struct libusb_device **devlist;
struct libusb_device_descriptor des;
libusb_device_handle *dev_hdl;
- int ret, i;
+ int dummy, ret, i;
+ unsigned char config[MAX_CONFIGBLOCK_SIZE];
drvc = di->priv;
sdi = NULL;
libusb_get_device_address(devlist[i]) != address)
continue;
- if ((ret = libusb_open(devlist[i], &dev_hdl)) != 0) {
- sr_dbg("failed to open device for scan: %s",
- libusb_error_name(ret));
+ if (!(dev_hdl = lascar_open(devlist[i])))
+ continue;
+
+ if (lascar_get_config(dev_hdl, config, &dummy) != SR_OK)
continue;
- }
- sdi = lascar_identify(dev_hdl);
libusb_close(dev_hdl);
+ sdi = lascar_identify(config);
}
return sdi;
}
-
-SR_PRIV int lascar_el_usb_receive_data(int fd, int revents, void *cb_data)
+static void lascar_el_usb_dispatch(struct sr_dev_inst *sdi, unsigned char *buf,
+ int buflen)
{
- const struct sr_dev_inst *sdi;
struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ struct sr_channel *ch;
+ float *temp, *rh;
+ uint16_t s;
+ int samples, samples_left, i, j;
+
+ devc = sdi->priv;
+
+ samples = buflen / devc->sample_size;
+ samples_left = devc->logged_samples - devc->rcvd_samples;
+ if (samples_left < samples)
+ samples = samples_left;
+ switch (devc->profile->logformat) {
+ case LOG_TEMP_RH:
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.mqflags = 0;
+ if (!(temp = g_try_malloc(sizeof(float) * samples)))
+ break;
+ if (!(rh = g_try_malloc(sizeof(float) * samples)))
+ break;
+ for (i = 0, j = 0; i < samples; i++) {
+ /* Both Celcius and Fahrenheit stored at base -40. */
+ if (devc->temp_unit == 0)
+ /* Celcius is stored in half-degree increments. */
+ temp[j] = buf[i * 2] / 2 - 40;
+ else
+ temp[j] = buf[i * 2] - 40;
+
+ rh[j] = buf[i * 2 + 1] / 2;
+
+ if (temp[j] == 0.0 && rh[j] == 0.0)
+ /* Skip invalid measurement. */
+ continue;
+ j++;
+ }
+ analog.num_samples = j;
+
+ ch = sdi->channels->data;
+ if (ch->enabled) {
+ analog.channels = g_slist_append(NULL, ch);
+ analog.mq = SR_MQ_TEMPERATURE;
+ if (devc->temp_unit == 1)
+ analog.unit = SR_UNIT_FAHRENHEIT;
+ else
+ analog.unit = SR_UNIT_CELSIUS;
+ analog.data = temp;
+ sr_session_send(devc->cb_data, &packet);
+ }
+
+ ch = sdi->channels->next->data;
+ if (ch->enabled) {
+ analog.channels = g_slist_append(NULL, ch);
+ analog.mq = SR_MQ_RELATIVE_HUMIDITY;
+ analog.unit = SR_UNIT_PERCENTAGE;
+ analog.data = rh;
+ sr_session_send(devc->cb_data, &packet);
+ }
- if (!(sdi = cb_data))
- return TRUE;
+ g_free(temp);
+ g_free(rh);
+ break;
+ case LOG_CO:
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.channels = sdi->channels;
+ analog.num_samples = samples;
+ analog.mq = SR_MQ_CARBON_MONOXIDE;
+ analog.unit = SR_UNIT_CONCENTRATION;
+ analog.mqflags = 0;
+ if (!(analog.data = g_try_malloc(sizeof(float) * samples)))
+ break;
+ for (i = 0; i < samples; i++) {
+ s = (buf[i * 2] << 8) | buf[i * 2 + 1];
+ analog.data[i] = (s * devc->co_high + devc->co_low) / 1000000;
+ if (analog.data[i] < 0.0)
+ analog.data[i] = 0.0;
+ }
+ sr_session_send(devc->cb_data, &packet);
+ g_free(analog.data);
+ break;
+ default:
+ /* How did we even get this far? */
+ break;
+ }
+ devc->rcvd_samples += samples;
- if (!(devc = sdi->priv))
- return TRUE;
+}
+
+SR_PRIV int lascar_el_usb_handle_events(int fd, int revents, void *cb_data)
+{
+ struct drv_context *drvc = di->priv;
+ struct sr_datafeed_packet packet;
+ struct sr_dev_inst *sdi;
+ struct timeval tv;
- if (revents == G_IO_IN) {
- /* TODO */
+ (void)fd;
+ (void)revents;
+
+ sdi = cb_data;
+
+ if (sdi->status == SR_ST_STOPPING) {
+ usb_source_remove(sdi->session, drvc->sr_ctx);
+
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
}
+ memset(&tv, 0, sizeof(struct timeval));
+ libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
+ NULL);
+
return TRUE;
}
+
+SR_PRIV void lascar_el_usb_receive_transfer(struct libusb_transfer *transfer)
+{
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ int ret;
+ gboolean packet_has_error;
+
+ sdi = transfer->user_data;
+ devc = sdi->priv;
+
+ packet_has_error = FALSE;
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_NO_DEVICE:
+ /* USB device was unplugged. */
+ dev_acquisition_stop(sdi, sdi);
+ 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 (!packet_has_error) {
+ if (devc->rcvd_samples < devc->logged_samples)
+ lascar_el_usb_dispatch(sdi, transfer->buffer,
+ transfer->actual_length);
+ devc->rcvd_bytes += transfer->actual_length;
+ sr_spew("received %d/%d bytes (%d/%d samples)",
+ devc->rcvd_bytes, devc->log_size,
+ devc->rcvd_samples, devc->logged_samples);
+ if (devc->rcvd_bytes >= devc->log_size)
+ dev_acquisition_stop(sdi, sdi);
+ }
+
+ if (sdi->status == SR_ST_ACTIVE) {
+ /* Send the same request again. */
+ if ((ret = libusb_submit_transfer(transfer) != 0)) {
+ sr_err("Unable to resubmit transfer: %s.",
+ libusb_error_name(ret));
+ g_free(transfer->buffer);
+ libusb_free_transfer(transfer);
+ dev_acquisition_stop(sdi, sdi);
+ }
+ } else {
+ /* This was the last transfer we're going to receive, so
+ * clean up now. */
+ g_free(transfer->buffer);
+ libusb_free_transfer(transfer);
+ }
+
+}
+
+static int get_flags(unsigned char *configblock)
+{
+ int flags;
+
+ flags = (configblock[32] | (configblock[33] << 8)) & 0x1fff;
+ sr_spew("Read flags (0x%.4x).", flags);
+
+ return flags;
+}
+
+static int set_flags(unsigned char *configblock, int flags)
+{
+
+ sr_spew("Setting flags to 0x%.4x.", flags);
+ configblock[32] = flags & 0xff;
+ configblock[33] = (flags >> 8) & 0x1f;
+
+ return flags;
+}
+
+SR_PRIV int lascar_is_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int dummy, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &dummy) != SR_OK)
+ return -1;
+
+ flags = get_flags(devc->config);
+ if (flags & 0x0100)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+SR_PRIV int lascar_start_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int len, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &len) != SR_OK)
+ return SR_ERR;
+
+ /* Turn on logging. */
+ flags = get_flags(devc->config);
+ flags |= 0x0100;
+ set_flags(devc->config, flags);
+
+ /* Start logging in 0 seconds. */
+ memset(devc->config + 24, 0, 4);
+
+ ret = lascar_save_config(usb->devhdl, devc->config, len);
+ sr_info("Started internal logging.");
+
+ return ret;
+}
+
+SR_PRIV int lascar_stop_logging(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int len, flags, ret;
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ if (lascar_get_config(usb->devhdl, devc->config, &len) != SR_OK)
+ return SR_ERR;
+
+ flags = get_flags(devc->config);
+ flags &= ~0x0100;
+ set_flags(devc->config, flags);
+
+ ret = lascar_save_config(usb->devhdl, devc->config, len);
+ sr_info("Stopped internal logging.");
+
+ return ret;
+}
projects / libsigrok.git / blobdiff