spidemo.c

三星ARM9 2410 SPI接口驱动源代码 for linux 2.4 内核

#include <linux/types.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
#include <stdio.h>
#include "spi.h"

int dev_handle,boot_handle,PacketNum,DotNum;
unsigned char bootdata[60*1024],*p;
unsigned int filelen;
unsigned long temp;

void check_packet()
{

  while(1)
    {
      if(ioctl(dev_handle,SPI_CHECK_DATA,&PacketNum)==TestDataTimeOut)
	{
	  //      printf("Test Time out!Reboot dsp\n");
	  //	  boot();
	  break;
	}
      if(ioctl(dev_handle,SPI_CHECK_DATA,&PacketNum)==TestDataReady)
	{
	  printf("Received %d Packet\n",PacketNum);
	  while(PacketNum--)
	    {
	      ioctl(dev_handle,SPI_GET_DATA,bootdata);
	      if(*(unsigned short *)bootdata!=0x55aa)
		printf("Packet flag error,not 0x55aa\n");
	      else
		{
		  printf("Packet Len=%d\n",*(unsigned short *)(bootdata+2));
		  if(bootdata[4]!=DataPacket)
		    printf("Error packet type\n");
		  else
		    {
		      printf("Data packet\n");
	  
		      switch(bootdata[5]){
		      case SPI_ADSL_PSD:
			printf("SPI_ADSL_PSD Packet received!\n");
			break;
		      case SPI_ADSL_RMS:
			printf("SPI_ADSL_RMS Packet received!\n");
			break;
		      case SPI_ADSL_ATT:
			printf("SPI_ADSL_ATT Packet received!");
			break;
		      case SPI_ADSL_BALANCE:
			printf("SPI_ADSL_BALANCE Packet received!\n");
			break;
		      case SPI_ADSL_FEXT:
			printf("SPI_ADSL_FEXT Packet received!\n");
			break;
		      case SPI_ADSL_NEXT:
			printf("SPI_ADSL_NEXT Packet received!\n");
			break;
		      case SPI_ADSL_VOL:
			printf("SPI_ADSL_VOL Packet received!\n");
			break;
		      case SPI_ADSL_RES:
			printf("SPI_ADSL_RES Packet received!\n");
			break;
		      default:
			printf("error packet type\n");
			break;
		      }

		      p=bootdata+18;
		      switch(bootdata[5]){
		      case SPI_ADSL_PSD:
		      case SPI_ADSL_ATT:
		      case SPI_ADSL_BALANCE:
		      case SPI_ADSL_FEXT:
		      case SPI_ADSL_NEXT:

			break;



		      case SPI_ADSL_VOL:
		      case SPI_ADSL_RES:
		      case SPI_ADSL_RMS:

			temp=((*p)>>4&0xf)*10000000;
			temp+=((*p)&0xf)*1000000;
			p++;
			temp+=((*p)>>4&0xf)*100000;
			temp+=((*p)&0xf)*10000;
			p++;
			temp+=((*p)>>4&0xf)*1000;
			temp+=((*p)&0xf)*100;
			p++;
			temp+=((*p)>>4&0xf)*10;
			temp+=((*p)&0xf);
			printf("Value=%d.",temp);

			p++;
			temp=((*p)>>4&0xf)*1000;
			temp+=((*p)&0xf)*100;
			p++;
			temp+=((*p)>>4&0xf)*10;
			temp+=((*p)&0xf);
			printf("%d\n.",temp);
			break;
		      default:
			printf("error packet type\n");
			break;
		      }
		    }
		}
	    }
	  break;
	}
    }              //while(1) end
}



int boot()
{  
  boot_handle=open("bootload.bin",O_RDONLY);
  if(boot_handle==-1)
    {
      printf("Boot file not found,reset dsp fauler!\n");
      close(dev_handle);
      return -1;
    }
  
  filelen=lseek(boot_handle,0,SEEK_END);
  lseek(boot_handle,0,SEEK_SET);
  read(boot_handle,bootdata,filelen);
  close(boot_handle);

  ioctl(dev_handle,SPI_SET_BOOTLEN,filelen);
  return ioctl(dev_handle,SPI_SEND_BOOTDATA,bootdata);
} 

/*
#define SPI_ADSL_PSD     1
#define SPI_ADSL_RMS     2
#define SPI_ADSL_ATT     3
#define SPI_ADSL_BALANCE 4
#define SPI_ADSL_FEXT    5
#define SPI_ADSL_NEXT    6
#define SPI_ADSL_VOL     7
#define SPI_ADSL_RES     8
#define SPI_ADSL_STOPTEST 9
*/

int main()
{

  
  dev_handle=open("/dev/spi_drv",O_RDWR);
  if(dev_handle==-1)
    {
      printf("Device not exist,check system!\n");
      return -1;
    }

  while(1)
    {
      printf("0:boot dsp  1:PSD   2:RMS   3:ATT    4:BALANCE\n");
      printf("5:FEXT      6:NEXT  7:VOL   8:RES    9:end demo\n");
      printf("p:Power off r:Modem reset   b:BL on  o:BL off\n");

      bootdata[0]="\0";
      fgets(bootdata,100,stdin);
      if(!strcmp(bootdata,"0\n"))
	boot();

      if(!strcmp(bootdata,"p\n"))
	ioctl(dev_handle,SPI_POWER_OFF,NULL);

      if(!strcmp(bootdata,"r\n"))
	ioctl(dev_handle,SPI_MODEM_RESET,NULL);

      if(!strcmp(bootdata,"b\n"))
	ioctl(dev_handle,SPI_BLIGHT_ON,NULL);

      if(!strcmp(bootdata,"o\n"))
	ioctl(dev_handle,SPI_BLIGHT_OFF,NULL);

      if(!strcmp(bootdata,"1\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_PSD,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}
      if(!strcmp(bootdata,"2\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_RMS,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}
      if(!strcmp(bootdata,"3\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_ATT,1);             //slave
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}

      if(!strcmp(bootdata,"4\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_BALANCE,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}

      if(!strcmp(bootdata,"5\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_FEXT,1);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}

      if(!strcmp(bootdata,"6\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_NEXT,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}
      if(!strcmp(bootdata,"7\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_VOL,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}
      if(!strcmp(bootdata,"8\n"))
	{
	  ioctl(dev_handle,SPI_ADSL_RES,NULL);
	  check_packet();
	  //	  ioctl(dev_handle,SPI_ADSL_STOPTEST,NULL);
	}
      if(!strcmp(bootdata,"9\n"))
	break;
    }
      

    
  close(dev_handle);
  return 0;
}