#include?“Physical_Mcp2515.h“
#define?SPI1_DR_Address????0x4001300C
#define?SPI2_DR_Address????0x4000380C
#define?BUFFERSIZE?????????20
#define?CRCPOLYNOMIAL??????7

unsigned?char?PhyMcp2515_BufferRx[BUFFERSIZE];
unsigned?char?PhyMcp2515_BufferTx[BUFFERSIZE];
MCP2515MSG?st_phyMcp_canMsg0;
MCP2515MSG?st_phyMcp_canMsg1;

unsigned?short?us_phyMcp2515_dmaErrFlag;
unsigned?short?us_phyMcp2515_errStep;
unsigned?char?uc_phyMcp2515_commFlag;//通訊正常1
unsigned?char?uc_PhyMcp2515_canIntf;
unsigned?char?uc_phyCan_resetFlag;

//調用此函數初始化即可。波特率50K，CS-PB12?MISO-PB14，SCK-PB13?and?MOSI-PB15。使用SPI2，未使用MCP2515的中斷引腳。
void?PhyMcp2515_PeriphInit（void）
{
	PhyMcp2515_GpioConfig（）;
	PhyMcp2515_PeriphRegisterConfig（）;
	//PhyMcp2515_McpConfig（100）;
	PhyMcp2515_McpConfig（50）;
}

void?PhyMcp2515_PeriphRegisterConfig（void）
{
	PhyMcp2515_Spi2RegisterConfig（）;
	PhyMcp2515_DmaRegisterConfig（）;
	//PhyMcp2515_ExtiLine12Config（）;?采用查詢方式接收
	SPI_SSOutputCmd（SPI2?DISABLE）;
	/*?Enable?SPI2?DMA?Tx?request?*/
	SPI_I2S_DMACmd（SPI2?SPI_I2S_DMAReq_Tx?ENABLE）;
	/*?Enable?SPI2?DMA?Rx?request?*/
	SPI_I2S_DMACmd（SPI2?SPI_I2S_DMAReq_Rx?ENABLE）;
	/*?Enable?SPI2?*/
	SPI_Cmd（SPI2?ENABLE）;
}

void?PhyMcp2515_GpioConfig（void）
{
	GPIO_InitTypeDef?GPIO_InitStructure;

	RCC_APB2PeriphClockCmd（RCC_APB2Periph_GPIOB?|?RCC_APB2Periph_GPIOD?|?RCC_APB2Periph_AFIO?ENABLE）;
	
????????//for?CS?pin
	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_12;
	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_Out_PP;
	GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
	GPIO_Init（GPIOB?&GPIO_InitStructure）;
	/*?Configure?SPI2?pins:?SCK?and?MOSI?*/
	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_13?|?GPIO_Pin_15;
	GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_AF_PP;
	GPIO_Init（GPIOB?&GPIO_InitStructure）;

		/*?Configure?SPI1?pins:?MISO?*/
	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_14;
	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_IN_FLOATING;
	GPIO_Init（GPIOB?&GPIO_InitStructure）;
	
	//for?interrupt?pin?pc12
	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_12;
	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_IN_FLOATING;
	//GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
	GPIO_Init（GPIOC?&GPIO_InitStructure）;
}

void?PhyMcp2515_Spi2RegisterConfig（void）
{
	SPI_InitTypeDef????SPI_InitStructure;
????
????RCC_APB1PeriphClockCmd（RCC_APB1Periph_SPI2?ENABLE）;
	/*?SPI2?configuration?*/
	SPI_InitStructure.SPI_Direction?=?SPI_Direction_2Lines_FullDuplex;
	SPI_InitStructure.SPI_Mode?=?SPI_Mode_Master;
	SPI_InitStructure.SPI_DataSize?=?SPI_DataSize_8b;
	SPI_InitStructure.SPI_CPOL?=?SPI_CPOL_Low;
	SPI_InitStructure.SPI_CPHA?=?SPI_CPHA_1Edge;
	SPI_InitStructure.SPI_NSS?=?SPI_NSS_Soft;
????SPI_InitStructure.SPI_CRCPolynomial?=?CRCPOLYNOMIAL;
	SPI_InitStructure.SPI_BaudRatePrescaler?=?SPI_BaudRatePrescaler_4;//設置波特率72/2/4
????//SPI_InitStructure.SPI_BaudRatePrescaler?=?SPI_BaudRatePrescaler_32;
	SPI_InitStructure.SPI_FirstBit?=?SPI_FirstBit_MSB;
	

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????6060??2018-11-13?20:18??Physical_Mcp2515.h
?????文件???????21465??2018-11-13?20:13??Physical_Mcp2515.c