CAN总线及SAE J1939协议应用程序分析所对应的驱动文件

// make sure we are in configuration mode
i=0;
while( (CAN_SPI_CMD( SPI_CMD_READ, TOLONG(&(MCP2510_MAP->CANSTAT)), ARG_UN
{
i++;
if(i == 1000)
{
printk("Please connect the CAN PORT with MCU!! error is MCP2510_Init
struct semaphore sem; //semaphore used for mutex
unsigned int unsigned int //unsigned int
IrqNum; MinorNum;/*device minor number*/
BaudRate;
//unsigned char
CAN_SPI_CMD( SPI_CMD_RESET, ARG_UNUSED, ARG_UNUSED, ARG_UNUSED); mdelay(10); canstat=CAN_SPI_CMD(SPI_CMD_READ,TOLONG(&(MCP2510_MAP->CANSTAT)),ARG_UNUSE canctrl=CAN_SPI_CMD(SPI_CMD_READ,TOLONG(&(MCP2510_MAP->CANCTRL)),ARG_UNUSE printk("CANSTAT80=: 0x%02X!\n",canstat); printk("CANCTRLe7=: 0x%02X!\n",canctrl); if((canstat != 0x80) && (canctrl != 0xe7)) {
*SendBuf;
//unsigned int
SendNum;
//volatile unsigned long SendHead;
//volatile unsigned long SendTail;
}__attribute__((aligned(L1_CACHE_BYTES),packed));
/*****************************Variable define*******************************/ unsigned int MCP_major = MCP_MAJOR; struct MCP_device *Device[MCP_NUM]; unsigned int MCP_irq[MCP_NUM] = {IRQ_EINT5,IRQ_EINT19}; static char *MCP_name[MCP_NUM] = {"mcpcan0","mcpcan1"};
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->CNF3)),
CNF3_INI

CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->CNF2)),
CNF2_INI
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->CNF1)),
volatile unsigned long RecvBuf; volatile unsigned long RecvHead; volatile unsigned long RecvTail; volatile unsigned long RecvNum;
wait_queue_head_t inq; //or use as a global variable
*/
/*****************************MCP device initialize*************************/
static int MCP2510_Init(int MinorNum )
{
// Configure the SPI Interface in MX1
Device[i]->MinorNum = i; Device[i]->IrqNum = MCP_irq[i];
init_waitqueue_head(&(Device[i]->inq));//初初初激激激激 init_MUTEX(&(Device[i]->sem)); //函函初初初函函函设函函函。 函函函设函函函没互互。该只只将该激激只只访 } return 0; }
#define BUF_SIZE sizeof(struct MCP_device) * 100
volatile int *rGPGCON=NULL; volatile int *rGPGUP=NULL; volatile int *rGPGDAT=NULL;
volatile int *rCLKCON;
CNF1_
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->CANINTE)),
CANINTE_
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->CANINTF)),
CANINTF_
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->EFLG)),
//malloc the Send buffer //Device[i]->SendBuf = kmalloc(sizeof(struct MCP_device) * Buf_long,GFP //if(Device[i]->SendBuf == NULL) { // printk(KERN_ALERT"allocate Send memory failed.\n"); // return(-ENOMEM); //} //memset((char *)Device[i]->SendBuf,0,sizeof(struct MCP_device) * Buf_l
/* MCP device initialize */ /* Initialize the mcp2510
Configure the mcp2510 through spi interface
Return : RC_SUCCESS 0
MCP2510_Init_fail 3
By
: xiaopenghui
printk("Please check the spi PORT with MCU!! \n"); return MCP2510_Init_fail; }
CAN_SPI_CMD( SPI_CMD_BITMOD, TOLONG(&(MCP2510_MAP->CANCTRL)), 0xe0, 0x80 ) canctrl=CAN_SPI_CMD(SPI_CMD_READ,TOLONG(&(MCP2510_MAP->CANCTRL)),ARG_UNUSE printk("CANCTRL87=: 0x%02X! CONFIG MODE\n",canctrl);
驱驱驱驱:J:\workspace\mcp2510\011_mcpfor1939\mcp2510.c 2010-11-30, 14:29:39
#include <linux/fs.h> #include <asm/uaccess.h> /* for get_user and put_user */ #include <linux/module.h> #include <asm/io.h> #include <linux/delay.h> #include <linux/ioport.h> /* for verify_area */ #include <linux/errno.h> /* for -EBUSY */ #include <linux/sched.h> #include <linux/interrupt.h> /* for module_init */ #include <linux/irq.h> #include "mcp2510.h"
return MCP2510_Init_fail;
}
}
// start configuration
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->BFPCTRL)),
BFPCTRL_
CAN_SPI_CMD( SPI_CMD_WRITE, TOLONG(&(MCP2510_MAP->TXRTSCTRL)), TXRTSCTR
printk(KERN_ALERT"allocate device memory failed.\n"); return(-ENOMEM); } memset((char *)Device[i],0,sizeof(struct MCP_device));//初初初设0
//malloc the recv buffer Device[i]->RecvBuf = (unsigned long)kmalloc(sizeof(struct MCP_device) * if(Device[i]->RecvBuf == 0) {
/*****************************MCP2510 device initialize********************** //这该函函没函对struct MCP_device激程初初初 //Buf_long设将为没是是如为 static int MCP_device_init(void) {