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64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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* This file is part of the canrelay project.
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* Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifndef __CAN_H__
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#define __CAN_H__
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#include "hardware.h"
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// CAN ID mask (11 bits)
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#define CANIDMASK (0x7ff)
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// amount of filter banks in STM32F0
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#define STM32F0FBANKNO (28)
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// flood period in milliseconds
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#define FLOOD_PERIOD_MS (5)
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// incoming message buffer size
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#define CAN_INMESSAGE_SIZE (8)
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// CAN message
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typedef struct{
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uint8_t data[8]; // up to 8 bytes of data
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uint8_t length; // data length
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uint16_t ID; // ID of receiver
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} CAN_message;
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typedef enum{
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CAN_STOP,
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CAN_READY,
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CAN_BUSY,
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CAN_OK,
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CAN_FIFO_OVERRUN
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} CAN_status;
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CAN_status CAN_get_status();
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void CAN_reinit(uint16_t speed);
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void CAN_setup(uint16_t speed);
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CAN_status can_send(uint8_t *msg, uint8_t len, uint16_t target_id);
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void can_proc();
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CAN_message *CAN_messagebuf_pop();
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void set_flood(CAN_message *msg);
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#endif // __CAN_H__
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