+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * 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)
-{
- 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;
- struct sr_usb_dev_inst *usb;
- int len, ret;
- unsigned char buf[7];
-
- sr_dbg("Configuring device.");
-
- usb = sdi->conn;
- devc = sdi->priv;
-
- buf[0] = CMD_CONFIGURE;
- buf[1] = devc->sample_interval;
- buf[2] = devc->alarm_low;
- buf[3] = devc->alarm_high;
- buf[4] = devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F ? 0 : 1;
- buf[5] = devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A ? 0 : 1;
- buf[6] = devc->data_source;
- ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
- if (ret != 0 || len != 7) {
- sr_dbg("Failed to configure device: %s", libusb_error_name(ret));
- return SR_ERR;
- }
-
- /* The configure command ack takes about 32ms to come in. */
- ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 1, &len, 40);
- if (ret != 0 || len != 1) {
- sr_dbg("Failed to configure device (no ack): %s", libusb_error_name(ret));
- return SR_ERR;
- }
- if (buf[0] != (CMD_CONFIGURE | 0x80)) {
- sr_dbg("Failed to configure device: invalid response 0x%2.x", buf[0]);
- return SR_ERR;
- }
-
- devc->config_dirty = FALSE;
-
- return SR_OK;
-}
-
-SR_PRIV int kecheng_kc_330b_set_date_time(struct sr_dev_inst *sdi)
-{
- struct sr_usb_dev_inst *usb;
- GDateTime *dt;
- int len, ret;
- unsigned char buf[7];
-
- sr_dbg("Setting device date/time.");
-
- usb = sdi->conn;
-
- dt = g_date_time_new_now_local();
- buf[0] = CMD_SET_DATE_TIME;
- buf[1] = g_date_time_get_year(dt) - 2000;
- buf[2] = g_date_time_get_month(dt);
- buf[3] = g_date_time_get_day_of_month(dt);
- buf[4] = g_date_time_get_hour(dt);
- buf[5] = g_date_time_get_minute(dt);
- buf[6] = g_date_time_get_second(dt);
- g_date_time_unref(dt);
- ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, 7, &len, 5);
- if (ret != 0 || len != 7) {
- sr_dbg("Failed to set date/time: %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 set date/time (no ack): %s", libusb_error_name(ret));
- return SR_ERR;
- }
- if (buf[0] != (CMD_SET_DATE_TIME | 0x80)) {
- sr_dbg("Failed to set date/time: invalid response 0x%2.x", buf[0]);
- 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_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