X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fvictor-dmm%2Fapi.c;h=66eff890a107ea39b3e76070e54abae070a7b3aa;hb=HEAD;hp=c15239eddef18e4eb95ae8780edd14a54978d4f6;hpb=e73ffd4238c6d1be58d3fcdcf7f100200f033856;p=libsigrok.git diff --git a/hardware/victor-dmm/api.c b/hardware/victor-dmm/api.c deleted file mode 100644 index c15239ed..00000000 --- a/hardware/victor-dmm/api.c +++ /dev/null @@ -1,482 +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 int32_t hwopts[] = { - SR_CONF_CONN, -}; - -static const int32_t hwcaps[] = { - SR_CONF_MULTIMETER, - SR_CONF_LIMIT_MSEC, - SR_CONF_LIMIT_SAMPLES, - SR_CONF_CONTINUOUS, -}; - -/* 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(sdi->conn); - sr_dev_inst_free(sdi); - } - - g_slist_free(drvc->instances); - drvc->instances = NULL; - - return SR_OK; -} - -static int hw_init(struct sr_context *sr_ctx) -{ - return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); -} - -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; - - drvc = di->priv; - - /* USB scan is always authoritative. */ - clear_instances(); - - devices = NULL; - libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &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 (!(sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), - libusb_get_device_address(devlist[i]), NULL))) - return NULL; - sdi->inst_type = SR_INST_USB; - - 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) -{ - return ((struct drv_context *)(di->priv))->instances; -} - -static int hw_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; - } - - /* The device reports as HID class, so the kernel would have - * claimed it. */ - 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, - 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 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, VICTOR_INTERFACE); - libusb_close(usb->devhdl); - 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 config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) -{ - struct sr_usb_dev_inst *usb; - char str[128]; - - switch (id) { - 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 id, GVariant *data, const struct sr_dev_inst *sdi) -{ - struct dev_context *devc; - gint64 now; - int ret; - - 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 (id) { - 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) -{ - - (void)sdi; - - switch (key) { - case SR_CONF_SCAN_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, - hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); - break; - case SR_CONF_DEVICE_OPTIONS: - *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, - hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); - break; - default: - return SR_ERR_NA; - } - - return SR_OK; -} - -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)); - g_free(transfer->buffer); - libusb_free_transfer(transfer); - hw_dev_acquisition_stop(sdi, sdi); - } - } 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; - 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(drvc->sr_ctx->libusb_ctx, &tv, - NULL); - - return TRUE; -} - -static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, - void *cb_data) -{ - struct dev_context *devc; - struct drv_context *drvc = di->priv; - const struct libusb_pollfd **pfd; - struct sr_usb_dev_inst *usb; - struct libusb_transfer *transfer; - int ret, i; - unsigned char *buf; - - 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; - - /* Send header packet to the session bus. */ - std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); - - pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); - 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, 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, - .config_get = config_get, - .config_set = config_set, - .config_list = config_list, - .dev_open = hw_dev_open, - .dev_close = hw_dev_close, - .dev_acquisition_start = hw_dev_acquisition_start, - .dev_acquisition_stop = hw_dev_acquisition_stop, - .priv = NULL, -};