* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <string.h>
#include "protocol.h"
+extern struct sr_dev_driver kecheng_kc_330b_driver_info;
+static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info;
+extern const uint64_t kecheng_kc_330b_sample_intervals[][2];
+
SR_PRIV int kecheng_kc_330b_handle_events(int fd, int revents, void *cb_data)
{
- const struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_dev_inst *sdi;
+ struct sr_usb_dev_inst *usb;
struct timeval tv;
+ const uint64_t *intv_entry;
+ gint64 now, interval;
+ int offset, len, ret;
+ unsigned char buf[4];
(void)fd;
(void)revents;
+ drvc = di->priv;
sdi = cb_data;
devc = sdi->priv;
+ usb = sdi->conn;
+
+ memset(&tv, 0, sizeof(struct timeval));
+ libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
+ NULL);
+ if (sdi->status == SR_ST_STOPPING) {
+ libusb_free_transfer(devc->xfer);
+ usb_source_remove(sdi->session, drvc->sr_ctx);
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+ sdi->status = SR_ST_ACTIVE;
+ return TRUE;
+ }
+
+ if (devc->state == LIVE_SPL_IDLE) {
+ /* Request samples at the interval rate. */
+ now = g_get_monotonic_time() / 1000;
+ intv_entry = kecheng_kc_330b_sample_intervals[devc->sample_interval];
+ interval = intv_entry[0] * 1000 / intv_entry[1];
+ if (now - devc->last_live_request > interval) {
+ buf[0] = CMD_GET_LIVE_SPL;
+ ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
+ if (ret != 0 || len != 1) {
+ sr_dbg("Failed to request new acquisition: %s",
+ libusb_error_name(ret));
+ sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
+ devc->cb_data);
+ return TRUE;
+ }
+ libusb_submit_transfer(devc->xfer);
+ devc->last_live_request = now;
+ devc->state = LIVE_SPL_WAIT;
+ }
+ } else if (devc->state == LIVE_SPL_IDLE) {
+ buf[0] = CMD_GET_LOG_DATA;
+ offset = devc->num_samples / 63;
+ buf[1] = (offset >> 8) & 0xff;
+ buf[2] = offset & 0xff;
+ if (devc->stored_samples - devc->num_samples > 63)
+ buf[3] = 63;
+ else
+ /* Last chunk. */
+ buf[3] = devc->stored_samples - devc->num_samples;
+ ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 4, &len, 5);
+ if (ret != 0 || len != 4) {
+ sr_dbg("Failed to request next chunk: %s",
+ libusb_error_name(ret));
+ sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
+ devc->cb_data);
+ return TRUE;
+ }
+ libusb_submit_transfer(devc->xfer);
+ devc->state = LIVE_SPL_WAIT;
+ }
return TRUE;
}
+static void send_data(const struct sr_dev_inst *sdi, void *buf, unsigned int buf_len)
+{
+ struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+
+ devc = sdi->priv;
+
+ memset(&analog, 0, sizeof(struct sr_datafeed_analog));
+ analog.mq = SR_MQ_SOUND_PRESSURE_LEVEL;
+ analog.mqflags = devc->mqflags;
+ analog.unit = SR_UNIT_DECIBEL_SPL;
+ analog.channels = sdi->channels;
+ analog.num_samples = buf_len;
+ analog.data = buf;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ sr_session_send(devc->cb_data, &packet);
+
+}
+
+SR_PRIV void kecheng_kc_330b_receive_transfer(struct libusb_transfer *transfer)
+{
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ float fvalue[64];
+ int packet_has_error, num_samples, i;
+
+ sdi = transfer->user_data;
+ devc = sdi->priv;
+
+ packet_has_error = FALSE;
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_NO_DEVICE:
+ /* USB device was unplugged. */
+ sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
+ devc->cb_data);
+ 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)
+ return;
+
+ if (devc->state == LIVE_SPL_WAIT) {
+ if (transfer->actual_length != 3 || transfer->buffer[0] != 0x88) {
+ sr_dbg("Received invalid SPL packet.");
+ } else {
+ fvalue[0] = ((transfer->buffer[1] << 8) + transfer->buffer[2]) / 10.0;
+ send_data(sdi, fvalue, 1);
+ devc->num_samples++;
+ if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
+ sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
+ devc->cb_data);
+ } else {
+ /* let USB event handler fire off another
+ * request when the time is right. */
+ devc->state = LIVE_SPL_IDLE;
+ }
+ }
+ } else if (devc->state == LOG_DATA_WAIT) {
+ if (transfer->actual_length < 1 || !(transfer->actual_length & 0x01)) {
+ sr_dbg("Received invalid stored SPL packet.");
+ } else {
+ num_samples = (transfer->actual_length - 1) / 2;
+ for (i = 0; i < num_samples; i++) {
+ fvalue[i] = transfer->buffer[1 + i * 2] << 8;
+ fvalue[i] += transfer->buffer[1 + i * 2 + 1];
+ fvalue[i] /= 10.0;
+ }
+ send_data(sdi, fvalue, 1);
+ devc->num_samples += num_samples;
+ if (devc->num_samples >= devc->stored_samples) {
+ sdi->driver->dev_acquisition_stop((struct sr_dev_inst *)sdi,
+ devc->cb_data);
+ } else {
+ /* let USB event handler fire off another
+ * request when the time is right. */
+ devc->state = LOG_DATA_IDLE;
+ }
+ }
+ }
+
+}
+
SR_PRIV int kecheng_kc_330b_configure(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
return SR_ERR;
}
+ devc->config_dirty = FALSE;
+
return SR_OK;
}
return SR_ERR;
}
+ return SR_OK;
+}
+SR_PRIV int kecheng_kc_330b_status_get(const struct sr_dev_inst *sdi,
+ int *status)
+{
+ struct sr_usb_dev_inst *usb;
+ int len, ret;
+ unsigned char buf;
+
+ sr_dbg("Getting device status.");
+
+ usb = sdi->conn;
+ buf = CMD_GET_STATUS;
+ ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &buf, 1, &len, 5);
+ if (ret != 0 || len != 1) {
+ sr_dbg("Failed to get status: %s", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ ret = libusb_bulk_transfer(usb->devhdl, EP_IN, &buf, 1, &len, 10);
+ if (ret != 0 || len != 1) {
+ sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ /* Need either 0x84 or 0xa4. */
+ if (buf != (CMD_GET_STATUS | 0x80) && buf != (CMD_GET_STATUS | 0xa0)) {
+ sr_dbg("Failed to get status: invalid response 0x%2.x", buf);
+ return SR_ERR;
+ }
+
+ if (buf & 0x20)
+ *status = DEVICE_INACTIVE;
+ else
+ *status = DEVICE_ACTIVE;
return SR_OK;
}
-SR_PRIV int kecheng_kc_330b_recording_get(const struct sr_dev_inst *sdi,
- gboolean *tmp)
+SR_PRIV int kecheng_kc_330b_log_info_get(const struct sr_dev_inst *sdi,
+ unsigned char *buf)
{
+ struct sr_usb_dev_inst *usb;
+ int len, ret;
+
+ sr_dbg("Getting logging info.");
+
+ usb = sdi->conn;
+ buf[0] = CMD_GET_LOG_INFO;
+ ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 1, &len, 5);
+ if (ret != 0 || len != 1) {
+ sr_dbg("Failed to get status: %s", libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 9, &len, 10);
+ if (ret != 0 || len != 9) {
+ sr_dbg("Failed to get status (no ack): %s", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ if (buf[0] != (CMD_GET_LOG_INFO | 0x80) || buf[1] > 6) {
+ sr_dbg("Failed to get log info: invalid response 0x%2.x", buf[0]);
+ return SR_ERR;
+ }
return SR_OK;
}
projects / libsigrok.git / blobdiff