+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 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 SERIALCOMM "115200/8n1"
-
-SR_PRIV struct sr_dev_driver testo_driver_info;
-static struct sr_dev_driver *di = &testo_driver_info;
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-
-static const int32_t scanopts[] = {
- SR_CONF_CONN,
-};
-
-static const int32_t devopts[] = {
- SR_CONF_MULTIMETER,
- SR_CONF_LIMIT_MSEC,
- SR_CONF_LIMIT_SAMPLES,
- SR_CONF_CONTINUOUS,
-};
-
-unsigned char TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 };
-struct testo_model models[] = {
- { "435", 9, TESTO_x35_REQUEST },
-};
-
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *scan(GSList *options)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_config *src;
- struct sr_dev_inst *sdi;
- struct sr_usb_dev_inst *usb;
- struct libusb_device_descriptor des;
- libusb_device **devlist;
- struct libusb_device_handle *hdl;
- GSList *conn_devices, *devices, *l;
- int devcnt, ret, i;
- const char *str;
- char manufacturer[64], product[64];
-
- devices = NULL;
- drvc = di->priv;
- drvc->instances = NULL;
-
- conn_devices = NULL;
- for (l = options; l; l = l->next) {
- src = l->data;
- if (src->key != SR_CONF_CONN)
- continue;
- str = g_variant_get_string(src->data, NULL);
- conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str);
- }
-
- libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
- for (i = 0; devlist[i]; i++) {
- if (conn_devices) {
- usb = NULL;
- for (l = conn_devices; l; l = l->next) {
- usb = l->data;
- if (usb->bus == libusb_get_bus_number(devlist[i])
- && usb->address == libusb_get_device_address(devlist[i]))
- break;
- }
- if (!l)
- /* This device matched none of the ones that
- * matched the conn specification. */
- continue;
- }
-
- if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
- sr_warn("Failed to get device descriptor: %s.",
- libusb_error_name(ret));
- continue;
- }
-
- if ((ret = libusb_open(devlist[i], &hdl)) < 0)
- continue;
-
- manufacturer[0] = product[0] = '\0';
- if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii(
- hdl, des.iManufacturer, (unsigned char *) manufacturer,
- sizeof(manufacturer))) < 0) {
- sr_warn("Failed to get manufacturer string descriptor: %s.",
- libusb_error_name(ret));
- }
- if (des.iProduct && (ret = libusb_get_string_descriptor_ascii(
- hdl, des.iProduct, (unsigned char *) product,
- sizeof(product))) < 0) {
- sr_warn("Failed to get product string descriptor: %s.",
- libusb_error_name(ret));
- }
- libusb_close(hdl);
-
- if (strncmp(manufacturer, "testo", 5))
- continue;
-
- /* Hardcode the 435 for now.*/
- if (strcmp(product, "testo 435/635/735"))
- continue;
-
- devcnt = g_slist_length(drvc->instances);
- sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, "Testo",
- "435/635/735", NULL);
- sdi->driver = di;
- sdi->inst_type = SR_INST_USB;
- sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
- libusb_get_device_address(devlist[i]), NULL);
- devc = g_malloc(sizeof(struct dev_context));
- devc->model = &models[0];
- devc->limit_msec = 0;
- devc->limit_samples = 0;
- sdi->priv = devc;
- if (testo_probe_channels(sdi) != SR_OK)
- continue;
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
- }
- libusb_free_device_list(devlist, 1);
- g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
-
- return devices;
-}
-
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int dev_clear(void)
-{
- return std_dev_clear(di, NULL);
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- struct drv_context *drvc = di->priv;
- struct sr_usb_dev_inst *usb;
- libusb_device **devlist;
- int ret, i;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- usb = sdi->conn;
- libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
- for (i = 0; devlist[i]; i++) {
- if (libusb_get_bus_number(devlist[i]) != usb->bus
- || libusb_get_device_address(devlist[i]) != usb->address)
- continue;
- if ((ret = libusb_open(devlist[i], &usb->devhdl))) {
- sr_err("Failed to open device: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
- break;
- }
- libusb_free_device_list(devlist, 1);
- if (!devlist[i]) {
- sr_err("Device not found.");
- return SR_ERR;
- }
-
- if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
- if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
- if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
- sr_err("Failed to detach kernel driver: %s.",
- libusb_error_name(ret));
- return SR_ERR;
- }
- }
- }
-
- if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
- sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- 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;
-
- libusb_release_interface(usb->devhdl, 0);
- 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))
- return SR_OK;
-
- ret = dev_clear();
- 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 sr_usb_dev_inst *usb;
- char str[128];
-
- (void)cg;
-
- switch (key) {
- case SR_CONF_CONN:
- if (!sdi || !sdi->conn)
- return SR_ERR_ARG;
- usb = sdi->conn;
- snprintf(str, 128, "%d.%d", usb->bus, usb->address);
- *data = g_variant_new_string(str);
- 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;
- gint64 now;
- int ret;
-
- (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_MSEC:
- devc->limit_msec = g_variant_get_uint64(data);
- now = g_get_monotonic_time() / 1000;
- devc->end_time = now + devc->limit_msec;
- sr_dbg("Setting time limit to %" PRIu64 "ms.",
- devc->limit_msec);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = g_variant_get_uint64(data);
- sr_dbg("Setting sample limit to %" PRIu64 ".",
- devc->limit_samples);
- 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)
-{
- (void)sdi;
- (void)cg;
-
- switch (key) {
- case SR_CONF_SCAN_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
- break;
- case SR_CONF_DEVICE_OPTIONS:
- *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
- devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
- break;
- default:
- return SR_ERR_NA;
- }
-
- return SR_OK;
-}
-
-static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len)
-{
- struct dev_context *devc;
- int packet_size;
- uint16_t crc;
-
- devc = sdi->priv;
-
- if (devc->reply_size + len > MAX_REPLY_SIZE) {
- /* Something went very wrong. */
- sr_dbg("Receive buffer overrun.");
- devc->reply_size = 0;
- return;
- }
-
- memcpy(devc->reply + devc->reply_size, data, len);
- devc->reply_size += len;
- /* Sixth byte contains the length of the packet. */
- if (devc->reply_size < 7)
- return;
-
- packet_size = 7 + devc->reply[6] * 7 + 2;
- if (devc->reply_size < packet_size)
- return;
-
- if (!testo_check_packet_prefix(devc->reply, devc->reply_size))
- return;
-
- crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2);
- if (crc == RL16(&devc->reply[devc->reply_size - 2])) {
- testo_receive_packet(sdi);
- devc->num_samples++;
- } else {
- sr_dbg("Packet has invalid CRC.");
- }
-
- devc->reply_size = 0;
- if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
- dev_acquisition_stop(sdi, devc->cb_data);
- else
- testo_request_packet(sdi);
-
-}
-
-SR_PRIV void receive_transfer(struct libusb_transfer *transfer)
-{
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- int ret;
-
- sdi = transfer->user_data;
- devc = sdi->priv;
- if (transfer == devc->out_transfer)
- /* Just the command acknowledgement. */
- return;
-
- if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
- /* USB device was unplugged. */
- dev_acquisition_stop(sdi, devc->cb_data);
- } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
- /* First two bytes in any transfer are FTDI status bytes. */
- if (transfer->actual_length > 2)
- receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2);
- }
- /* Anything else is either an error or a timeout, which is fine:
- * we were just going to send another transfer request anyway. */
-
- if (sdi->status == SR_ST_ACTIVE) {
- 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, devc->cb_data);
- }
- } 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 handle_events(int fd, int revents, void *cb_data)
-{
- struct dev_context *devc;
- struct drv_context *drvc = di->priv;
- struct sr_datafeed_packet packet;
- struct sr_dev_inst *sdi;
- struct timeval tv;
- gint64 now;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
-
- if (devc->limit_msec) {
- now = g_get_monotonic_time() / 1000;
- if (now > devc->end_time)
- dev_acquisition_stop(sdi, devc->cb_data);
- }
-
- if (sdi->status == SR_ST_STOPPING) {
- usb_source_remove(sdi->session, drvc->sr_ctx);
-
- dev_close(sdi);
-
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
- }
-
- memset(&tv, 0, sizeof(struct timeval));
- libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
- NULL);
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- struct libusb_transfer *transfer;
- int ret;
- unsigned char *buf;
-
- drvc = di->priv;
- 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;
- usb = sdi->conn;
- devc->cb_data = cb_data;
- devc->end_time = 0;
- devc->num_samples = 0;
- devc->reply_size = 0;
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, LOG_PREFIX);
-
- usb_source_add(sdi->session, drvc->sr_ctx, 100,
- handle_events, (void *)sdi);
-
- if (testo_set_serial_params(usb) != SR_OK)
- return SR_ERR;
-
- devc->out_transfer = libusb_alloc_transfer(0);
- if (testo_request_packet(sdi) != SR_OK)
- return SR_ERR;
-
- buf = g_try_malloc(MAX_REPLY_SIZE);
- transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf,
- MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100);
- if ((ret = libusb_submit_transfer(transfer) != 0)) {
- sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
- libusb_free_transfer(transfer);
- g_free(buf);
- return SR_ERR;
- }
- devc->reply_size = 0;
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- (void)cb_data;
-
- if (!di->priv) {
- sr_err("Driver was not initialized.");
- return SR_ERR;
- }
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- sdi->status = SR_ST_STOPPING;
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver testo_driver_info = {
- .name = "testo",
- .longname = "Testo",
- .api_version = 1,
- .init = init,
- .cleanup = cleanup,
- .scan = scan,
- .dev_list = dev_list,
- .dev_clear = dev_clear,
- .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,
-};
projects / libsigrok.git / blobdiff