mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 02:35:23 +03:00
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
|
|
* geany_encoding=koi8-r
|
|
* can.h
|
|
*
|
|
* Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
#pragma once
|
|
#ifndef __CAN_H__
|
|
#define __CAN_H__
|
|
|
|
#include "hardware.h"
|
|
|
|
// identifier mask
|
|
#define CAN_ID_MASK ((uint16_t)0x7F0)
|
|
// prefix of identifiers
|
|
#define CAN_ID_PREFIX ((uint16_t)0xAAA)
|
|
// this is master - Controller_address==0
|
|
#define MASTER_ID (CAN_ID_PREFIX & CAN_ID_MASK)
|
|
// broadcasting to every slave
|
|
#define BCAST_ID ((uint16_t)0x7F7)
|
|
// send dummy message to this ID for testing CAN bus status
|
|
#define NOONE_ID ((uint16_t)0x7FF)
|
|
|
|
extern uint16_t curcanspeed;
|
|
extern uint16_t CANID;
|
|
extern int8_t cansniffer;
|
|
|
|
typedef struct{
|
|
uint8_t data[8];
|
|
uint8_t length;
|
|
uint16_t ID; // ID of receiver
|
|
} CAN_message;
|
|
|
|
typedef enum{
|
|
CAN_NOTMASTER, // can't send command - not a master
|
|
CAN_STOP, // CAN stopped
|
|
CAN_READY, // ready to send
|
|
CAN_BUSY, // bus is busy
|
|
CAN_OK, // all OK?
|
|
CAN_FIFO_OVERRUN, // FIFO overrun
|
|
CAN_ERROR // no recipients on bus or too many errors
|
|
} CAN_status;
|
|
|
|
CAN_status CAN_get_status();
|
|
|
|
void readCANID();
|
|
|
|
void CAN_setup(uint16_t speed);
|
|
void CAN_listenall();
|
|
void CAN_listenone();
|
|
|
|
void can_proc();
|
|
CAN_status can_send(uint8_t *msg, uint8_t len, uint16_t target_id);
|
|
|
|
CAN_message *CAN_messagebuf_pop();
|
|
|
|
#endif // __CAN_H__
|