argbColors/src/argbColors.c

 /**********************
 Dmitry Isaenko
 License: GNU GPL v.3
 redrise.ru, github.com/developersu
 2025, Russia
 ***********************/

#include <stdio.h>
#include <stdlib.h>
#include "libusb-1.0/libusb.h"

#include "device_configuration.h"
#include "init_terminate.c"
#include "commands.c"
#include "iousb.c"
#include "helpers.c"

int findDevice(libusb_device *dev){

	struct libusb_device_descriptor desc;

	int ret = libusb_get_device_descriptor(dev, &desc);
	if (ret < 0) {
		fprintf(stderr, "failed to get device descriptor");
		return 0;
	}

	if (desc.idVendor == VID && desc.idProduct == PID){
		printf("Found VID:PID device: %04x:%04x\n", desc.idVendor, desc.idProduct);
		return 1;
	}

	return 0;
}

int main(int argc, char *argv[]) {

	libusb_context *context;
	int ret = libusb_init_context(&context, /*options=*/NULL, /*num_options=*/0);
	if (ret < 0){
		printf("libusb_init_context failure\n");
		return ret;
	}

	libusb_device **devs;
	ssize_t count = libusb_get_device_list(context, &devs);
	if (count < 0) {
		libusb_exit(NULL);
		printf("libusb_get_device_list failed\n");
		return 1;
	}
	
	// Get deivce list
	libusb_device* device = NULL;
	for (int i = 0; devs[i]; i++){
		if (findDevice(devs[i])){
			device = devs[i];
			break;
		}
	}

	if (device == NULL){
		libusb_exit(NULL);
		printf("Device not found\n");
		return 1;
	}

	// Free deivce list
	libusb_free_device_list(devs, 1);
	/*
	libusb_device_handle* device = libusb_open_device_with_vid_pid(context, VID, PID);
	
	if (device == NULL)
		printf("Device not found\n");
	*/

	ret = libusb_open(device, &dev_handle);
	if (ret < 0) {
		libusb_exit(NULL);
		printf("libusb_open failed\n");
		return ret;
	}

	// We will rule, not kernel modules :D
	printf("libusb_set_auto_detach_kernel_driver - %d\n", libusb_set_auto_detach_kernel_driver(dev_handle, 1));
	
	// Let's find out current CONFIGURATION
	int bConfigurationValue;
	ret = libusb_get_configuration(dev_handle, &bConfigurationValue);
	if (ret < 0) {
		libusb_exit(NULL);
		printf("libusb_get_configuration failed: %d\n", ret);
		return ret;
	}
	printf("Current bConfigurationValue: %d\n", bConfigurationValue);

	// Set configuration (soft reset device)
	// if device used by kernel drivers already
	ret = libusb_kernel_driver_active(dev_handle, 1);
	printf("libusb_kernel_driver_active: %d\n", ret);

	if(ret != LIBUSB_ERROR_NOT_SUPPORTED && ret < 0){
		ret = libusb_detach_kernel_driver(dev_handle, 1);
		if (ret != LIBUSB_ERROR_NOT_SUPPORTED && ret < 0) {
			libusb_exit(NULL);
			printf("libusb_detach_kernel_driver failed: %d\n", ret);
			return ret;
		}
	}

	/*
	// Now let's reset device
	// Or just comment it out, since it's always this kinda shit appears: [25465.608100] usb 3-13: usbfs: interface 0 claimed by usbhid while 'argbColors' sets config #1
	// Either way it works
	ret = libusb_set_configuration(dev_handle, 1);
	if (ret < 0) {
		libusb_exit(NULL);
		printf("libusb_set_configuration failed: %d\n", ret);
		return ret;
	}
	*/

	// Claim interface
	ret = libusb_claim_interface(dev_handle, 1);
	if (ret < 0) {
		libusb_exit(NULL);
		printf("libusb_claim_interface failed: %d\n", ret);
		return ret;
	}


	if (init_sequence()){
		printf("Initial sequence transfer failure\n");
		libusb_close(dev_handle);
		return -1;
	}

	if(staticColorSeparate(0xff, 0xff, 0x2b, 0x00)){
		printf("Command transfer failure\n");
		libusb_close(dev_handle);
		return -1;
	}

	if (terminate_sequence()){
		printf("Termination sequence transfer failure\n");
		libusb_close(dev_handle);
		return -1;
	}
	
	libusb_close(dev_handle);

	return 0;
}