QMK/rawhid.c

#include "rawhid.h"

uint8_t hid_anim_data[32];

// See rawhid.h for prococol documentation
void raw_hid_receive(uint8_t *data, uint8_t length) {
	uint8_t cmd = data[0];

	switch (cmd) {
		case CMD_HELLO:
			ergodox_right_led_1_on();
			_delay_ms(50);
			ergodox_right_led_1_off();

			hid_send_state();
			break;

		#ifdef RGB_MATRIX_DATAPOINTER_ENABLED
		case CMD_ANIM_DATA:
			cmd_animation(data, length);
			break;
		#endif

		default:
			break;
	}

}



void hid_send_state() {
	uint8_t packet[RAW_EPSIZE] = {
		CMD_SEND_STATE
	};


	if (rgb_matrix_get_flags() != LED_FLAG_ALL) {
		// RGB matrix is disabled
		packet[1] = 0x00;
	} else {
		uint8_t mode = rgb_matrix_get_mode();
		switch (mode) {
			case RGB_MATRIX_CUSTOM_FFT_ANIM:
				// FFT Animation is active
				packet[1] = 0x02;
				break;

			default:
				// Normal animation is active
				packet[1] = 0x01;
				break;
		}
	}

	// Note that all sent packets MUST be
	// RAW_EPSIZE long.
	raw_hid_send(packet, RAW_EPSIZE);
}



#ifdef RGB_MATRIX_DATAPOINTER_ENABLED
void cmd_animation(uint8_t *data, uint8_t length) {
	switch (data[1]) {
		case CMD_ANIM_DATA_fft:
			// Only read data if animation is in fft mode
			if (rgb_matrix_get_mode() == RGB_MATRIX_CUSTOM_FFT_ANIM) {
				// rgb_matrix_anim_data is set to NULL at animation init.
				if (rgb_matrix_anim_data == NULL) { rgb_matrix_anim_data = hid_anim_data; }

				// Copy data into rgb matrix array
				memcpy(
					hid_anim_data,
					data + 2,
					sizeof(uint8_t) + 10
				);
			} else {
				// If not in fft mode and we receive fft data, send a state packet so host stops sending data.
				hid_send_state();
			}
			break;
	}
}
#endif