X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fvictor-dmm%2Fapi.c;h=bed4ce159ae0d6780b94211256c63926238c1b2e;hb=HEAD;hp=ae471d76fe82a124c37e406febe1d1fb8720646a;hpb=fa7730623a82bd1703b0d91adb97693e29b2a70c;p=libsigrok.git diff --git a/hardware/victor-dmm/api.c b/hardware/victor-dmm/api.c deleted file mode 100644 index ae471d76..00000000 --- a/hardware/victor-dmm/api.c +++ /dev/null @@ -1,488 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2012 Bert Vermeulen - * - * 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 . - */ - -#include -#include -#include -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" -#include "protocol.h" - -#define VICTOR_VID 0x1244 -#define VICTOR_PID 0xd237 -#define VICTOR_VENDOR "Victor" -#define VICTOR_INTERFACE 0 -#define VICTOR_ENDPOINT LIBUSB_ENDPOINT_IN | 1 - -SR_PRIV struct sr_dev_driver victor_dmm_driver_info; -static struct sr_dev_driver *di = &victor_dmm_driver_info; -static int hw_dev_close(struct sr_dev_inst *sdi); -static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); - -static const int hwcaps[] = { - SR_HWCAP_MULTIMETER, - SR_HWCAP_LIMIT_MSEC, - SR_HWCAP_LIMIT_SAMPLES, - SR_HWCAP_CONTINUOUS, - 0 -}; - -static const char *probe_names[] = { - "P1", -}; - -/* Properly close and free all devices. */ -static int clear_instances(void) -{ - struct sr_dev_inst *sdi; - struct drv_context *drvc; - struct dev_context *devc; - GSList *l; - - if (!(drvc = di->priv)) - /* Can get called on an unused driver, doesn't matter. */ - return SR_OK; - - for (l = drvc->instances; l; l = l->next) { - if (!(sdi = l->data)) - continue; - if (!(devc = sdi->priv)) - continue; - hw_dev_close(sdi); - sr_usb_dev_inst_free(devc->usb); - sr_dev_inst_free(sdi); - } - - g_slist_free(drvc->instances); - drvc->instances = NULL; - - return SR_OK; -} - -static int hw_init(void) -{ - struct drv_context *drvc; - - if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { - sr_err("Driver context malloc failed."); - return SR_ERR_MALLOC; - } - di->priv = drvc; - - return SR_OK; -} - -static GSList *hw_scan(GSList *options) -{ - struct drv_context *drvc; - struct dev_context *devc; - struct sr_dev_inst *sdi; - struct sr_probe *probe; - struct libusb_device_descriptor des; - libusb_device **devlist; - GSList *devices; - int ret, devcnt, i; - - (void)options; - - if (!(drvc = di->priv)) { - sr_err("Driver was not initialized."); - return NULL; - } - - /* USB scan is always authoritative. */ - clear_instances(); - - devices = NULL; - libusb_get_device_list(NULL, &devlist); - for (i = 0; devlist[i]; i++) { - if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) { - sr_warn("Failed to get device descriptor: %s", - libusb_error_name(ret)); - continue; - } - - if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID) - continue; - - devcnt = g_slist_length(drvc->instances); - if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE, - VICTOR_VENDOR, NULL, NULL))) - return NULL; - sdi->driver = di; - - if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) - return NULL; - sdi->priv = devc; - - if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) - return NULL; - sdi->probes = g_slist_append(NULL, probe); - - if (!(devc->usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), - libusb_get_device_address(devlist[i]), NULL))) - return NULL; - - drvc->instances = g_slist_append(drvc->instances, sdi); - devices = g_slist_append(devices, sdi); - } - libusb_free_device_list(devlist, 1); - - return devices; -} - -static GSList *hw_dev_list(void) -{ - struct drv_context *drvc; - - if (!(drvc = di->priv)) { - sr_err("Driver was not initialized."); - return NULL; - } - - return drvc->instances; -} - -static int hw_dev_open(struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - libusb_device **devlist; - int ret, i; - - if (!di->priv) { - sr_err("Driver was not initialized."); - return SR_ERR; - } - - devc = sdi->priv; - libusb_get_device_list(NULL, &devlist); - for (i = 0; devlist[i]; i++) { - if (libusb_get_bus_number(devlist[i]) != devc->usb->bus - || libusb_get_device_address(devlist[i]) != devc->usb->address) - continue; - if ((ret = libusb_open(devlist[i], &devc->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; - } - - /* The device reports as HID class, so the kernel would have - * claimed it. */ - if (libusb_kernel_driver_active(devc->usb->devhdl, 0) == 1) { - if (libusb_detach_kernel_driver(devc->usb->devhdl, 0) < 0) { - sr_err("Failed to detach kernel driver."); - return SR_ERR; - } - } - - if ((ret = libusb_claim_interface(devc->usb->devhdl, - VICTOR_INTERFACE))) { - sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); - return SR_ERR; - } - sdi->status = SR_ST_ACTIVE; - - return SR_OK; -} - -static int hw_dev_close(struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - - if (!di->priv) { - sr_err("Driver was not initialized."); - return SR_ERR; - } - - devc = sdi->priv; - if (!devc->usb->devhdl) - /* Nothing to do. */ - return SR_OK; - - libusb_release_interface(devc->usb->devhdl, VICTOR_INTERFACE); - libusb_close(devc->usb->devhdl); - devc->usb->devhdl = NULL; - sdi->status = SR_ST_INACTIVE; - - return SR_OK; -} - -static int hw_cleanup(void) -{ - struct drv_context *drvc; - - if (!(drvc = di->priv)) - /* Can get called on an unused driver, doesn't matter. */ - return SR_OK; - - clear_instances(); - g_free(drvc); - di->priv = NULL; - - return SR_OK; -} - -static int hw_info_get(int info_id, const void **data, - const struct sr_dev_inst *sdi) -{ - (void)sdi; - - switch (info_id) { - case SR_DI_HWCAPS: - *data = hwcaps; - break; - case SR_DI_NUM_PROBES: - *data = GINT_TO_POINTER(1); - break; - case SR_DI_PROBE_NAMES: - *data = probe_names; - break; - default: - sr_err("Unknown info_id: %d.", info_id); - return SR_ERR_ARG; - } - - return SR_OK; -} - -static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, - const void *value) -{ - struct dev_context *devc; - gint64 now; - int ret; - - if (!di->priv) { - sr_err("Driver was not initialized."); - return SR_ERR; - } - - if (sdi->status != SR_ST_ACTIVE) { - sr_err("Device inactive, can't set config options."); - return SR_ERR; - } - - devc = sdi->priv; - ret = SR_OK; - switch (hwcap) { - case SR_HWCAP_LIMIT_MSEC: - devc->limit_msec = *(const int64_t *)value; - 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_HWCAP_LIMIT_SAMPLES: - devc->limit_samples = *(const uint64_t *)value; - sr_dbg("Setting sample limit to %" PRIu64 ".", - devc->limit_samples); - break; - default: - sr_err("Unknown hardware capability: %d.", hwcap); - ret = SR_ERR_ARG; - } - - return ret; -} - -static 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->status == LIBUSB_TRANSFER_NO_DEVICE) { - /* USB device was unplugged. */ - hw_dev_acquisition_stop(sdi, sdi); - } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { - sr_dbg("Got %d-byte packet.", transfer->actual_length); - if (transfer->actual_length == DMM_DATA_SIZE) { - victor_dmm_receive_data(sdi, transfer->buffer); - if (devc->limit_samples) { - if (devc->num_samples >= devc->limit_samples) - hw_dev_acquisition_stop(sdi, sdi); - } - } - } - /* 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) { - /* Send the same request again. */ - if ((ret = libusb_submit_transfer(transfer) != 0)) { - sr_err("Unable to resubmit transfer: %s.", - libusb_error_name(ret)); - libusb_free_transfer(transfer); - g_free(transfer->buffer); - hw_dev_acquisition_stop(sdi, sdi); - } - } else { - /* This was the last transfer we're going to receive, so - * clean up now. */ - libusb_free_transfer(transfer); - g_free(transfer->buffer); - } -} - -static int handle_events(int fd, int revents, void *cb_data) -{ - struct dev_context *devc; - struct sr_datafeed_packet packet; - struct sr_dev_inst *sdi; - struct timeval tv; - gint64 now; - int i; - - (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) - hw_dev_acquisition_stop(sdi, sdi); - } - - if (sdi->status == SR_ST_STOPPING) { - for (i = 0; devc->usbfd[i] != -1; i++) - sr_source_remove(devc->usbfd[i]); - - hw_dev_close(sdi); - - packet.type = SR_DF_END; - sr_session_send(cb_data, &packet); - } - - memset(&tv, 0, sizeof(struct timeval)); - libusb_handle_events_timeout_completed(NULL, &tv, NULL); - - return TRUE; -} - -static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, - void *cb_data) -{ - struct sr_datafeed_packet packet; - struct sr_datafeed_header header; - struct sr_datafeed_meta_analog meta; - struct dev_context *devc; - const struct libusb_pollfd **pfd; - struct libusb_transfer *transfer; - int ret, i; - unsigned char *buf; - - if (!di->priv) { - sr_err("Driver was not initialized."); - return SR_ERR; - } - - sr_dbg("Starting acquisition."); - - devc = sdi->priv; - devc->cb_data = cb_data; - - /* Send header packet to the session bus. */ - sr_dbg("Sending SR_DF_HEADER."); - packet.type = SR_DF_HEADER; - packet.payload = (uint8_t *)&header; - header.feed_version = 1; - sr_session_send(devc->cb_data, &packet); - - /* Send metadata about the SR_DF_ANALOG packets to come. */ - packet.type = SR_DF_META_ANALOG; - packet.payload = &meta; - meta.num_probes = 1; - sr_session_send(devc->cb_data, &packet); - - pfd = libusb_get_pollfds(NULL); - for (i = 0; pfd[i]; i++) { - /* Handle USB events every 100ms, for decent latency. */ - sr_source_add(pfd[i]->fd, pfd[i]->events, 100, - handle_events, (void *)sdi); - /* We'll need to remove this fd later. */ - devc->usbfd[i] = pfd[i]->fd; - } - devc->usbfd[i] = -1; - - buf = g_try_malloc(DMM_DATA_SIZE); - transfer = libusb_alloc_transfer(0); - /* Each transfer request gets 100ms to arrive before it's restarted. - * The device only sends 1 transfer/second no matter how many - * times you ask, but we want to keep step with the USB events - * handling above. */ - libusb_fill_interrupt_transfer(transfer, devc->usb->devhdl, - VICTOR_ENDPOINT, buf, DMM_DATA_SIZE, receive_transfer, - cb_data, 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; - } - - return SR_OK; -} - -static int hw_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) { - sr_err("Device not active, can't stop acquisition."); - return SR_ERR; - } - - sdi->status = SR_ST_STOPPING; - - return SR_OK; -} - -SR_PRIV struct sr_dev_driver victor_dmm_driver_info = { - .name = "victor-dmm", - .longname = "Victor DMMs", - .api_version = 1, - .init = hw_init, - .cleanup = hw_cleanup, - .scan = hw_scan, - .dev_list = hw_dev_list, - .dev_clear = clear_instances, - .dev_open = hw_dev_open, - .dev_close = hw_dev_close, - .info_get = hw_info_get, - .dev_config_set = hw_dev_config_set, - .dev_acquisition_start = hw_dev_acquisition_start, - .dev_acquisition_stop = hw_dev_acquisition_stop, - .priv = NULL, -};