+++ /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"
-
-#define USB_CONN "1041.8101"
-#define VENDOR "Kecheng"
-#define USB_INTERFACE 0
-
-static const int32_t hwcaps[] = {
- SR_CONF_SOUNDLEVELMETER,
- SR_CONF_LIMIT_SAMPLES,
- SR_CONF_CONTINUOUS,
- SR_CONF_DATALOG,
- SR_CONF_SPL_WEIGHT_FREQ,
- SR_CONF_SPL_WEIGHT_TIME,
- SR_CONF_DATA_SOURCE,
-};
-
-SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = {
- { 1, 8 },
- { 1, 2 },
- { 1, 1 },
- { 2, 1 },
- { 5, 1 },
- { 10, 1 },
- { 60, 1 },
-};
-
-static const char *weight_freq[] = {
- "A",
- "C",
-};
-
-static const char *weight_time[] = {
- "F",
- "S",
-};
-
-static const char *data_sources[] = {
- "Live",
- "Memory",
-};
-
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
-static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info;
-
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static int scan_kecheng(struct sr_usb_dev_inst *usb, char **model)
-{
- struct drv_context *drvc;
- int len, ret;
- unsigned char cmd, buf[32];
-
- drvc = di->priv;
- if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
- return SR_ERR;
-
- cmd = CMD_IDENTIFY;
- ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
- if (ret != 0) {
- libusb_close(usb->devhdl);
- sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret));
- return SR_ERR;
- }
-
- ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10);
- if (ret != 0) {
- libusb_close(usb->devhdl);
- sr_dbg("Failed to receive response: %s", libusb_error_name(ret));
- return SR_ERR;
- }
-
- libusb_close(usb->devhdl);
- usb->devhdl = NULL;
-
- if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) {
- sr_dbg("Invalid response to Identify command");
- return SR_ERR;
- }
-
- buf[buf[1] + 2] = '\x0';
- *model = g_strndup((const gchar *)buf + 2, 30);
-
- return SR_OK;
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- struct sr_channel *ch;
- GSList *usb_devices, *devices, *l;
- char *model;
-
- (void)options;
-
- drvc = di->priv;
- drvc->instances = NULL;
-
- devices = NULL;
- if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) {
- /* We have a list of sr_usb_dev_inst matching the connection
- * string. Wrap them in sr_dev_inst and we're done. */
- for (l = usb_devices; l; l = l->next) {
- if (scan_kecheng(l->data, &model) != SR_OK)
- continue;
- if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR,
- model, NULL)))
- return NULL;
- g_free(model);
- sdi->driver = di;
- sdi->inst_type = SR_INST_USB;
- sdi->conn = l->data;
- if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "SPL")))
- return NULL;
- sdi->channels = g_slist_append(sdi->channels, ch);
-
- if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
- sr_dbg("Device context malloc failed.");
- return NULL;
- }
- sdi->priv = devc;
- devc->limit_samples = 0;
- /* The protocol provides no way to read the current
- * settings, so we'll enforce these. */
- devc->sample_interval = DEFAULT_SAMPLE_INTERVAL;
- devc->alarm_low = DEFAULT_ALARM_LOW;
- devc->alarm_high = DEFAULT_ALARM_HIGH;
- devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ;
- devc->data_source = DEFAULT_DATA_SOURCE;
- devc->config_dirty = FALSE;
-
- /* TODO: Set date/time? */
-
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
- }
- g_slist_free(usb_devices);
- } else
- g_slist_free_full(usb_devices, g_free);
-
- return devices;
-}
-
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- struct drv_context *drvc;
- struct sr_usb_dev_inst *usb;
- int ret;
-
- if (!(drvc = di->priv)) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
-
- if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
- return SR_ERR;
-
- if ((ret = libusb_set_configuration(usb->devhdl, 1))) {
- sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
-
- if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
- sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
- sdi->status = SR_ST_ACTIVE;
-
- return ret;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
-
- if (!usb->devhdl)
- /* Nothing to do. */
- return SR_OK;
-
- /* This allows a frontend to configure the device without ever
- * doing an acquisition step. */
- devc = sdi->priv;
- if (!devc->config_dirty)
- kecheng_kc_330b_configure(sdi);
-
- libusb_release_interface(usb->devhdl, USB_INTERFACE);
- libusb_close(usb->devhdl);
- usb->devhdl = NULL;
- sdi->status = SR_ST_INACTIVE;
-
- return SR_OK;
-}
-
-static int cleanup(void)
-{
- int ret;
- struct drv_context *drvc;
-
- if (!(drvc = di->priv))
- /* Can get called on an unused driver, doesn't matter. */
- return SR_OK;
-
-
- ret = std_dev_clear(di, NULL);
- g_free(drvc);
- di->priv = NULL;
-
- return ret;
-}
-
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- GVariant *rational[2];
- const uint64_t *si;
-
- (void)cg;
-
- devc = sdi->priv;
- switch (key) {
- case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
- case SR_CONF_SAMPLE_INTERVAL:
- si = kecheng_kc_330b_sample_intervals[devc->sample_interval];
- rational[0] = g_variant_new_uint64(si[0]);
- rational[1] = g_variant_new_uint64(si[1]);
- *data = g_variant_new_tuple(rational, 2);
- break;
- case SR_CONF_DATALOG:
- /* There really isn't a way to be sure the device is logging. */
- return SR_ERR_NA;
- break;
- case SR_CONF_SPL_WEIGHT_FREQ:
- if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
- *data = g_variant_new_string("A");
- else
- *data = g_variant_new_string("C");
- break;
- case SR_CONF_SPL_WEIGHT_TIME:
- if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F)
- *data = g_variant_new_string("F");
- else
- *data = g_variant_new_string("S");
- break;
- case SR_CONF_DATA_SOURCE:
- if (devc->data_source == DATA_SOURCE_LIVE)
- *data = g_variant_new_string("Live");
- else
- *data = g_variant_new_string("Memory");
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- struct dev_context *devc;
- uint64_t p, q;
- unsigned int i;
- int tmp, ret;
- const char *tmp_str;
-
- (void)cg;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- devc = sdi->priv;
- ret = SR_OK;
- switch (key) {
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = g_variant_get_uint64(data);
- sr_dbg("Setting sample limit to %" PRIu64 ".",
- devc->limit_samples);
- break;
- case SR_CONF_SAMPLE_INTERVAL:
- g_variant_get(data, "(tt)", &p, &q);
- for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
- if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q)
- continue;
- devc->sample_interval = i;
- devc->config_dirty = TRUE;
- break;
- }
- if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals))
- ret = SR_ERR_ARG;
- break;
- case SR_CONF_SPL_WEIGHT_FREQ:
- tmp_str = g_variant_get_string(data, NULL);
- if (!strcmp(tmp_str, "A"))
- tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A;
- else if (!strcmp(tmp_str, "C"))
- tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C;
- else
- return SR_ERR_ARG;
- devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
- devc->mqflags |= tmp;
- devc->config_dirty = TRUE;
- break;
- case SR_CONF_SPL_WEIGHT_TIME:
- tmp_str = g_variant_get_string(data, NULL);
- if (!strcmp(tmp_str, "F"))
- tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F;
- else if (!strcmp(tmp_str, "S"))
- tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S;
- else
- return SR_ERR_ARG;
- devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
- devc->mqflags |= tmp;
- devc->config_dirty = TRUE;
- break;
- case SR_CONF_DATA_SOURCE:
- tmp_str = g_variant_get_string(data, NULL);
- if (!strcmp(tmp_str, "Live"))
- devc->data_source = DATA_SOURCE_LIVE;
- else if (!strcmp(tmp_str, "Memory"))
- devc->data_source = DATA_SOURCE_MEMORY;
- else
- return SR_ERR;
- devc->config_dirty = TRUE;
- break;
- default:
- ret = SR_ERR_NA;
- }
-
- return ret;
-}
-
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_channel_group *cg)
-{
- GVariant *tuple, *rational[2];
- GVariantBuilder gvb;
- unsigned int i;
-
- (void)sdi;
- (void)cg;
-
- switch (key) {
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
- break;
- case SR_CONF_SAMPLE_INTERVAL:
- g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
- for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
- rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]);
- rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]);
- tuple = g_variant_new_tuple(rational, 2);
- g_variant_builder_add_value(&gvb, tuple);
- }
- *data = g_variant_builder_end(&gvb);
- break;
- case SR_CONF_SPL_WEIGHT_FREQ:
- *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
- break;
- case SR_CONF_SPL_WEIGHT_TIME:
- *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time));
- break;
- case SR_CONF_DATA_SOURCE:
- *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_meta meta;
- struct sr_config *src;
- struct sr_usb_dev_inst *usb;
- GVariant *gvar, *rational[2];
- const uint64_t *si;
- int stored_mqflags, req_len, buf_len, len, ret;
- unsigned char buf[9];
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- drvc = di->priv;
- devc = sdi->priv;
- usb = sdi->conn;
-
- devc->cb_data = cb_data;
- devc->num_samples = 0;
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, LOG_PREFIX);
-
- if (devc->data_source == DATA_SOURCE_LIVE) {
- /* Force configuration. */
- kecheng_kc_330b_configure(sdi);
-
- if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK)
- return SR_ERR;
- if (ret != DEVICE_ACTIVE) {
- sr_err("Device is inactive");
- /* Still continue though, since the device will
- * just return 30.0 until the user hits the button
- * on the device -- and then start feeding good
- * samples back. */
- }
- } else {
- if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK)
- return SR_ERR;
- stored_mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F;
- stored_mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A;
- devc->stored_samples = (buf[7] << 8) | buf[8];
- if (devc->stored_samples == 0) {
- /* Notify frontend of empty log by sending start/end packets. */
- packet.type = SR_DF_END;
- sr_session_send(cb_data, &packet);
- return SR_OK;
- }
-
- if (devc->limit_samples && devc->limit_samples < devc->stored_samples)
- devc->stored_samples = devc->limit_samples;
-
- si = kecheng_kc_330b_sample_intervals[buf[1]];
- rational[0] = g_variant_new_uint64(si[0]);
- rational[1] = g_variant_new_uint64(si[1]);
- gvar = g_variant_new_tuple(rational, 2);
- src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar);
- packet.type = SR_DF_META;
- packet.payload = &meta;
- meta.config = g_slist_append(NULL, src);
- sr_session_send(devc->cb_data, &packet);
- g_free(src);
- }
-
- if (!(devc->xfer = libusb_alloc_transfer(0)))
- return SR_ERR;
-
- usb_source_add(sdi->session, drvc->sr_ctx, 10,
- kecheng_kc_330b_handle_events, (void *)sdi);
-
- if (devc->data_source == DATA_SOURCE_LIVE) {
- buf[0] = CMD_GET_LIVE_SPL;
- buf_len = 1;
- devc->state = LIVE_SPL_WAIT;
- devc->last_live_request = g_get_monotonic_time() / 1000;
- req_len = 3;
- } else {
- buf[0] = CMD_GET_LOG_DATA;
- buf[1] = 0;
- buf[2] = 0;
- buf_len = 4;
- devc->state = LOG_DATA_WAIT;
- if (devc->stored_samples < 63)
- buf[3] = devc->stored_samples;
- else
- buf[3] = 63;
- /* Command ack byte + 2 bytes per sample. */
- req_len = 1 + buf[3] * 2;
- }
-
- ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5);
- if (ret != 0 || len != 1) {
- sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
- libusb_free_transfer(devc->xfer);
- return SR_ERR;
- }
-
- libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
- req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15);
- if (libusb_submit_transfer(devc->xfer) != 0) {
- libusb_free_transfer(devc->xfer);
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
-
- (void)cb_data;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- /* Signal USB transfer handler to clean up and stop. */
- sdi->status = SR_ST_STOPPING;
-
- devc = sdi->priv;
- if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) {
- /* The protocol doesn't have a command to clear stored data;
- * it clears it whenever new configuration is set. That means
- * we can't just configure the device any time we want when
- * it's in DATA_SOURCE_MEMORY mode. The only safe time to do
- * it is now, when we're sure we've pulled in all the stored
- * data. */
- kecheng_kc_330b_configure(sdi);
- }
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
- .name = "kecheng-kc-330b",
- .longname = "Kecheng KC-330B",
- .api_version = 1,
- .init = init,
- .cleanup = cleanup,
- .scan = scan,
- .dev_list = dev_list,
- .dev_clear = NULL,
- .config_get = config_get,
- .config_set = config_set,
- .config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
- .dev_acquisition_start = dev_acquisition_start,
- .dev_acquisition_stop = dev_acquisition_stop,
- .priv = NULL,
-};
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