rawhid_protocol.h

/* This file is part of ukbdc.
 *
 * ukbdc 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 2 of the License, or
 * (at your option) any later version.
 *
 * ukbdc 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 ukbdc; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#pragma once

#include "rawhid.h"

/* Packet types */
#define PING                    0x00
#define PONG                    0x01
#define MSG_START               0x02
#define MSG_CONT                0x03
#define RESET_PROTO             0x04

/* Message types */
#define MESSAGE_DFU			0x00
#define MESSAGE_WRITE_PAGE		0x01
#define MESSAGE_ACTIVATE_LAYOUT		0x02
#define MESSAGE_DEACTIVATE_LAYOUT	0x03

#define MSG_HDR_SIZE		3

/* Statuses */
#define IDLE			0
#define UNEXPECTED_CONT_ERROR	1
#define CRC_ERROR		2
#define RECEIVING_MESSAGE	3
#define EXECUTING		4
#define MESSAGE_ERROR		6
#define BUSY_ERROR		7
#define WRONG_MESSAGE_ERROR	8

struct RAWHID_packet {
	uint8_t header;
	uint8_t payload[RAWHID_SIZE - 1];
};

struct RAWHID_state {
	uint8_t status;
	int recvd;
	int len;
	uint16_t crc;
	uint8_t msg[130];
};

void RAWHID_PROTOCOL_task();
void RAWHID_PROTOCOL_handle_packet(uint8_t __attribute__((unused)) flags);