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packet.h
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packet.h
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/*
Copyright 2016 - 2021 Benjamin Vedder benjamin@vedder.se
This file is part of the VESC BMS firmware.
The VESC BMS firmware 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 3 of the License, or
(at your option) any later version.
The VESC BMS firmware 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PACKET_H_
#define PACKET_H_
#include <stdint.h>
#include <stdbool.h>
// Settings
#ifndef PACKET_MAX_PL_LEN
#define PACKET_MAX_PL_LEN 512
#endif
#define PACKET_BUFFER_LEN (PACKET_MAX_PL_LEN + 8)
// Types
typedef struct {
void(*send_func)(unsigned char *data, unsigned int len);
void(*process_func)(unsigned char *data, unsigned int len);
unsigned int rx_read_ptr;
unsigned int rx_write_ptr;
int bytes_left;
unsigned char rx_buffer[PACKET_BUFFER_LEN];
unsigned char tx_buffer[PACKET_BUFFER_LEN];
} PACKET_STATE_t;
// Functions
void packet_init(void (*s_func)(unsigned char *data, unsigned int len),
void (*p_func)(unsigned char *data, unsigned int len), PACKET_STATE_t *state);
void packet_reset(PACKET_STATE_t *state);
void packet_process_byte(uint8_t rx_data, PACKET_STATE_t *state);
void packet_send_packet(unsigned char *data, unsigned int len, PACKET_STATE_t *state);
#endif /* PACKET_H_ */