STM32 MCP2515 CAN 通信收发程序，调试通过

此代码是STM32F2 系类为MCU.里面包含MCP2515 CAN通信 收发程序，同时包含是SPI 初始化程序源码，这个程序源码可以直接移植使用.

#include “can_mcp2515.h“
#include “delay.h“

/* CAN 波特率选择 */
static u16 s_Baud = 125;
// static u16 s_Baud = 250; 
/* static u16 s_Baud = 500; */

/* MCP2515 外部晶振为 8M */
static u32 s_Osc = 8000;

/* mcp2515 控制指令 */
typedef enum
{
    RESET_CMD = 0xc0           
    READ_CMD = 0x03
    READ_RX_CMD	= 0x90
    WRITE_CMD = 0x02
    LOAD_TX_CMD = 0x40
    RTS_CMD = 0x80
    RTS_BUFF0_CMD = 0x81
    RTS_BUFF1_CMD = 0x82
    RTS_BUFF2_CMD = 0x84
    READ_STATUS_CMD	= 0xA0
    RX_STATUS_CMD = 0xB0
    BIT_MODIFY_CMD = 0x05
}_Cmd;

/* mcp2515 寄存器地址 */
typedef enum
{
    REG_RXF0SIDH = 0x00
    REG_RXF0SIDL = 0x01
    REG_RXF0EID8 = 0x02
    REG_RXF0EID0 = 0x03
    REG_RXF1SIDH = 0x04
    REG_RXF1SIDL = 0x05
    REG_RXF1EID8 = 0x06
    REG_RXF1EID0 = 0x07
    REG_RXF2SIDH = 0x08
    REG_RXF2SIDL = 0x09
    REG_RXF2EID8 = 0x0a
    REG_RXF2EID0 = 0x0b
    REG_BFPCTRL = 0x0c
    REG_TXRTSCTRL = 0x0d
    REG_CANSTAT = 0x0e
    REG_CANCTRL = 0x0f

    REG_RXF3SIDH = 0x10
    REG_RXF3SIDL = 0x11
    REG_RXF3EID8 = 0x12
    REG_RXF3EID0 = 0x13
    REG_RXF4SIDH = 0x14
    REG_RXF4SIDL = 0x15
    REG_RXF4EID8 = 0x16
    REG_RXF4EID0 = 0x17
    REG_RXF5SIDH = 0x18
    REG_RXF5SIDL = 0x19
    REG_RXF5EID8 = 0x1a
    REG_RXF5EID0 = 0x1b
    REG_TEC = 0x1c
    REG_REC = 0x1d

    REG_RXM0SIDH = 0x20
    REG_RXM0SIDL = 0x21
    REG_RXM0EID8 = 0x22
    REG_RXM0EID0 = 0x23
    REG_RXM1SIDH = 0x24
    REG_RXM1SIDL = 0x25
    REG_RXM1EID8 = 0x26
    REG_RXM1EID0 = 0x27
    REG_CNF3 = 0x28
    REG_CNF2 = 0x29
    REG_CNF1 = 0x2a
    REG_CANINTE = 0x2b
    REG_CANINTF = 0x2c
    REG_EFLG = 0x2d

    REG_TXB0CTRL = 0x30
    REG_TXB0SIDH = 0x31
    REG_TXB0SIDL = 0x32
    REG_TXB0EID8 = 0x33
    REG_TXB0EID0 = 0x34
    REG_TXB0DLC = 0x35
    REG_TXB0D0 = 0x36
    REG_TXB0D1 = 0x37
    REG_TXB0D2 = 0x38
    REG_TXB0D3 = 0x39
    REG_TXB0D4 = 0x3a
    REG_TXB0D5 = 0x3b
    REG_TXB0D6 = 0x3c
    REG_TXB0D7 = 0x3d

    REG_TXB1CTRL = 0x40
    REG_TXB1SIDH = 0x41
    REG_TXB1SIDL = 0x42
    REG_TXB1EID8 = 0x43
    REG_TXB1EID0 = 0x44
    REG_TXB1DLC = 0x45
    REG_TXB1D0 = 0x46
    REG_TXB1D1 = 0x47
    REG_TXB1D2 = 0x48
    REG_TXB1D3 = 0x49
    REG_TXB1D4 = 0x4a
    REG_TXB1D5 = 0x4b
    REG_TXB1D6 = 0x4c
    REG_TXB1D7 = 0x4d

    REG_TXB2CTRL = 0x50
    REG_TXB2SIDH = 0x51
    REG_TXB2SIDL = 0x52
    REG_TXB2EID8 = 0x53
    REG_TXB2EID0 = 0x54
    REG_TXB2DLC = 0x55
    REG_TXB2D0 = 0x56
    REG_TXB2D1 = 0x57
    REG_TXB2D2 = 0x58
    REG_TXB2D3 = 0x59
    REG_TXB2D4 = 0x5a
    REG_TXB2D5 = 0x5b
    REG_TXB2D6 = 0x5c
    REG_TXB2D7 = 0x5d

    REG_RXB0CTRL = 0x60
    REG_RXB0SIDH = 0x61
    REG_RXB0SIDL = 0x62
    REG_RXB0EID8 = 0x63
    REG_RXB0EID0 = 0x64
    REG_RXB0DLC = 0x65
    REG_RXB0D0 = 0x66
    REG_RXB0D1 = 0x67
    REG_RXB0D2 = 0x68

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件       19339  2017-08-26 16:47  CAN_MCP2515.c
     文件         666  2017-08-28 08:49  CAN_MCP2515.h