mirror of https://github.com/nirenjan/libx52.git
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* LibUSB test utility library
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*
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* This program calls the libusb_control_transfer API to log the bytes to
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* the given file. This is useful to generate a file with the same syntax
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* and verify that they match.
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*
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* Copyright (C) Nirenjan Krishnan (nirenjan@nirenjan.org)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "libusbx52.h"
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#include "x52_commands.h"
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libusb_context *global_context;
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static int send_command(libusb_device_handle *hdl, uint16_t index, uint16_t value)
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{
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return libusb_control_transfer(hdl,
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LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT,
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X52_VENDOR_REQUEST, value, index, NULL, 0, 5000);
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}
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static libusb_device_handle *libusbx52_init(void)
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{
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int rc;
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ssize_t count;
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int i;
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libusb_device **list;
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libusb_device *device;
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libusb_device_handle *hdl = NULL;
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struct libusb_device_descriptor desc;
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rc = libusb_init(&global_context);
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if (rc) {
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return NULL;
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}
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libusb_set_debug(global_context, LIBUSB_LOG_LEVEL_ERROR);
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count = libusb_get_device_list(global_context, &list);
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for (i = 0; i < count; i++) {
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device = list[i];
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if (!libusb_get_device_descriptor(device, &desc)) {
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if (desc.idVendor == 0x06a3) {
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if (desc.idProduct == 0x0762) {
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rc = libusb_open(device, &hdl);
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if (rc) {
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if (hdl) free(hdl);
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hdl = NULL;
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break;
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}
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}
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}
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}
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}
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libusb_free_device_list(list, 1);
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return hdl;
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}
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int main(int argc, char *argv[])
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{
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int index;
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int value;
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int parsed;
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int i;
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libusb_device_handle *hdl;
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libusb_context *ctx;
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hdl = libusbx52_init();
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ctx = hdl->ctx;
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/* Process arguments until there are fewer than 2 remaining */
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for (i = 1; i < argc && (argc - i) >= 2; i += 2) {
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parsed = sscanf(argv[i], "%x", &index);
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if (parsed != 1) break;
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parsed = sscanf(argv[i+1], "%x", &value);
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if (parsed != 1) break;
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send_command(hdl, index, value);
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}
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libusb_close(hdl);
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libusb_exit(ctx);
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return 0;
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}
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