fota_can.h

#pragma once
 
/************************************************************************************************
 * @file   fota_can.h
 *
 * @brief  Header file for CAN communication in FOTA
 *
 * @date   2025-01-08
 * @author Midnight Sun Team #24 - MSXVI
 ************************************************************************************************/
 
/* Standard library Headers */
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
/* Inter-component Headers */
 
/* Intra-component Headers */
#include "fota_error.h"
 
typedef struct {
  uint16_t prescaler;
  uint32_t bs1;
  uint32_t bs2;
} FotaCanTiming;
 
typedef enum {
  FOTA_CAN_BITRATE_125KBPS,  
  FOTA_CAN_BITRATE_250KBPS,  
  FOTA_CAN_BITRATE_500KBPS,  
  FOTA_CAN_BITRATE_1000KBPS, 
  NUM_FOTA_CAN_BITRATES      
} FotaCanBitrate;
 
typedef enum { CAN_CONTINUOUS = 0, CAN_ONE_SHOT_MODE, NUM_CAN_MODES } Boot_CanMode;
 
#define CAN_HW_BASE CAN1
 
typedef struct FotaCanSettings {
  uint16_t device_id;     
  FotaCanBitrate bitrate; 
  bool loopback;          
  bool silent;            
} FotaCanSettings;
 
typedef struct {
  uint32_t id;      
  uint8_t extended; 
  size_t dlc;       
  union {
    uint64_t data;        
    uint32_t data_u32[2]; 
    uint16_t data_u16[4]; 
    uint8_t data_u8[8];   
  };
} FotaCanMessage;
 
FotaError fota_can_init(const FotaCanSettings *settings);
 
FotaError fota_can_transmit(uint32_t id, bool extended, const uint8_t *data, size_t len);
 
FotaError fota_can_receive(FotaCanMessage *const msg);