158 lines
4.7 KiB
C
158 lines
4.7 KiB
C
/**
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* @file main.c
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* ledcontroller-3bit
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*
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* This file is a fork of the LedController code. You will find
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* the original copyright notices below.
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*
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* @copyright Copyright (C) 2013 andmarios - http://www.andmarios.com \n
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version. \n
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. \n
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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* @copyright Original Copyright Notice: \n
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*
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* LedController \n
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* Copyright (C) 2011 jmrobles - http://robleshermoso.wordpress.com \n
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version. \n
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. \n
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>. \n
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*/
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#include <stdio.h>
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#include <libusb.h>
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#include <errno.h>
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#include <string.h>
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#define USB_VID 0x1294 /**< USB Vendor ID */
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#define USB_PID 0x1320 /**< USB Product ID */
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#define USB_EP 0x2 /**< USB EndPoint */
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static struct libusb_device_handle *devh = NULL;
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/**
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* The device has a RGB LED, which has two states for each "sub-LED",
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* on and off.
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* The "sub-LEDs" are red, green and blue.
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*
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* Obviously there are 8 possible combinations for their state.
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* It seems there aren't bits mapped to each sub-LED, but instead
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* 3-bit values mapped to the 8 combinations.
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*
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* | R | G | B | Color | Value | Comment |
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* | - | - | - | ------ | ----- | ------------------------------- |
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* | 0 | 0 | 0 | off | 0x0 | |
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* | 0 | 0 | 1 | blue | 0x1 | |
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* | 1 | 0 | 0 | red | 0x2 | |
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* | 0 | 1 | 0 | green | 0x3 | |
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* | 0 | 1 | 1 | aqua | 0x4 | |
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* | 1 | 0 | 1 | purple | 0x5 | |
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* | 1 | 1 | 0 | yellow | 0x6 | more of a mustard - green color |
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* | 1 | 1 | 1 | white | 0x7 | a very blue-ish white |
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*
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* @param argc POSIX number of parameters
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* @param argv Array of parameters
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* @return Error code (0 on success)
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*/
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int main(int argc, char **argv) {
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if (argc != 2)
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{
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printf("Syntax: %s blue | red | green | aqua | purple | yellow | white | off\n", argv[0]);
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return -1;
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}
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unsigned char color_code = 0;
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if (strcmp(argv[1], "off") == 0)
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{
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color_code = 0;
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}
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else if (strcmp(argv[1], "blue") == 0)
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{
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color_code = 1;
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}
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else if (strcmp(argv[1], "red") == 0)
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{
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color_code = 2;
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}
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else if (strcmp(argv[1], "green") == 0)
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{
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color_code = 3;
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}
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else if (strcmp(argv[1], "aqua") == 0)
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{
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color_code = 4;
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}
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else if (strcmp(argv[1], "purple") == 0)
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{
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color_code = 5;
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}
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else if (strcmp(argv[1], "yellow") == 0)
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{
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color_code = 6;
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}
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else if (strcmp(argv[1], "white") == 0)
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{
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color_code = 7;
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}
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else
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{
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puts("Invalid color");
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return -1;
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}
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libusb_init(NULL);
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devh = libusb_open_device_with_vid_pid(NULL, USB_VID, USB_PID);
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if (devh == NULL)
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{
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puts("Device not found");
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return -1;
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}
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if (libusb_kernel_driver_active(devh, 0))
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{
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puts("Detach driver from kernel");
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int ret = libusb_detach_kernel_driver(devh, 0);
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if (ret < 0)
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{
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puts("Could not detach driver");
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return -1;
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}
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}
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char data[5];
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data[0] = color_code;
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data[1] = 0x4;
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data[2] = 0x4;
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data[3] = 0x4;
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data[4] = 0x4;
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libusb_claim_interface(devh, 0);
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int ret = libusb_interrupt_transfer(devh, USB_EP, data, 5, NULL, 0);
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if (ret < 0)
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{
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perror("libusb error");
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return -1;
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}
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return 0;
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} |