LPC2138外围模块底层驱动程序（刚写的，待续）

/*******************************************************************************************************
* 文件名：main.c
* 功  能：底层驱动模块（触摸屏）
* 作  者：Andy Jiang
* 日  期：2008年12月23号

|                                                         
|                        main.c                          
|                     by Andy jiang                       
|                      2008.12.123                        
|                                                          
|                    CS8920 software group                
|                    www.midoriya.co.jp                   
|                                                           
                            

********************************************************************************************************/
#include "config.h"
#define  baud_rate  1200
#define  ADC0       18
#define  ADC1       21
#define  UART0      6
#define  UART1      7
#define  TIMER0     4
#define  EXTRN     14
#define  TIMER1     5
#define  RTC       13
 uint32   adresult;
 uint32   voltage1;
 uint32   voltage2;
 //uint8 a[100]={0};
 uint8 send_counter;
 uint32  state;
/************************************************************/
/************function prototypes*****************************/
/************************************************************/
void EXTRN_Init(void);
void Port_Init( void );
void Timer0_Init( void );
void UART1_Init( void );
void UART0_Init( void );
void RTCI_Init( void );
void UART0_Sendbyte( uint8 sendbyte);
void UART0_Senddata( uint8 send_bytes, uint8 *buffer );
uint8 UART0_Recebyte( void ); 
void UART0_Recdata( uint8 rece_bytes, uint8 *buffer );
void UART1_Senddata(uint8 send_bytes, uint8 *buffer );

void Timer0_Int( void ) __irq ;   
void ADC0_Int  ( void ) __irq ;
void Uart0_Int ( void ) __irq ;
void Uart1_Int ( void ) __irq ;
void EXTRN_Int ( void ) __irq ;
void RTC_Int   ( void ) __irq ; 
/************************************************************/
/***********************serial0 driver***********************/
/************************************************************/
 void RTC_Int   ( void ) __irq
    {
   VICVectAddr=0xFF;
 }

 void ADC0_Int(  ) __irq         //AD0 i nterrupt service programme
   {

     VICVectAddr=0xFF;
   } 
 
   void ADC1_Int(  ) __irq       //AD1 interrupt service programme
   {
      VICVectAddr=0xFF;
   }  

  void EXTRN_Int(  ) __irq       //EXTRN  interrupt service programme
  {
     IO0SET=0X00;
      while((EXTINT&0X01)!=0X01)
            {
       EXTINT=0X01;
      }
   EXTINT=0X01;
      VICVectAddr=0xFF;   
  }
    
 
 void Timer0_Int( )  __irq      //Timer0 interrupt service programme
  {
    T0IR=0X01;
   VICVectAddr=0xFF;
  
   }   
    
 void Uart0_Int(   ) __irq      //UART0  interrupt service programme
  {

 VICVectAddr = 0xFF;

  }
 
 void Uart1_Int(   ) __irq     //UART1  interrupt service programme
  {
      VICVectAddr = 0xFF;
  }

 void  Port_Init( void )      // Port initialize
    {
      PINSEL0=0X00;
      PINSEL1=0X00000001;
    //  PINSEL2=0X00;               //BE CARE FOR THIS CODE！！！!!!!
      IO0DIR= 0X00;
      IO1DIR= 0X00;
      IO2DIR= 0X00;
      IO3DIR= 0X00;
      IO0SET= 0X00;
      IO0CLR= 0X00;
      IO1SET= 0X00;
      IO1CLR= 0X00;
   EXTMODE= 0X00;
    }
   
  void  Timer0_Init( void)
    {
      T0TC= 0;
      T0PR= 0;
      T0MCR= 0X03;
      T0MR0= Fpclk/2;
      T0TCR= 0X01;
      VICIntSelect= 0x00000000;                     /*dispatch as IRQ           */  
      VICVectCntl3= 0x20|TIMER0;                    /*Timer0  as IRQ slot1      */ 
      VICVectAddr3= (uint32)Timer0_Int;             /*get timer0 inter service  */
      VICIntEnable= 1<<TIMER0;                      /*timer0 Enable             */
                                 
     }
    
  void UART0_Init( void )
    {
      PINSEL0= PINSEL0&(~0x0F)|0x05;                 /* Enable RxD0 and TxD0                     */
      U0LCR= 0x83;                                   /* 8 bits, no Parity, 1 Stop bit            */
      U0DLL= 625%256;                                /* 1200 Baud Rate @ 12MHz VPB Clock */
      U0DLM=  625/256;       
      U0LCR= 0x03;                                   /*LOCK*/
      U0IER= 0X07;
  // U0LCR=0X81;                                   /*INT ENABLE*/
      VICVectCntl0= 0x20|UART0;                      /*UART0 as IRQ slot0*/ 
      VICVectAddr0= (uint32)Uart0_Int;               /*get UART0 inter service*/
      VICIntEnable= 1<<UART0;                                
    }
   
void UART1_Init( void )
    {
      PINSEL0= PINSEL0&(~(0x0F<<16))|(0x05<<16);     /* Enable RxD1 and TxD1                     */
      U1LCR= 0x83;                                   /* 8 bits, no Parity, 1 Stop bit            */
      U1DLL= 65535%256;                                /* 1200 Baud Rate @ 12MHz VPB Clock */
      U1DLM= 65535/256;       
      U1LCR= 0x03;
      U1IER= 0X03;
      VICVectCntl0= 0x20|UART1;                      /*UART0 as IRQ slot0*/ 
      VICVectAddr2= (uint32)Uart1_Int;               /*get UART0 inter service*/
      VICIntEnable= 1<<UART1;
    }
   
 uint16 ADC0_Init( void)
    {
    uint16 adresult;
       VICIntSelect=0x00000000;                     //dispatch as IRQ   
       VICVectCntl0=0x20|ADC0;                      //AD0 as IRQ slot0 
       VICVectAddr0=(uint32)ADC0_Int;               //get ad inter service
       VICIntEnable=1<<ADC0;
    return  (adresult);
    }
  uint16 ADC1_Init( void)
    {
    uint16 adresult;
       VICIntSelect=0x00000000;                     //dispatch as IRQ   
       VICVectCntl0=0x20|ADC1;                      //AD0 as IRQ slot0 
       VICVectAddr0=(uint32)ADC1_Int;               //get ad inter service
       VICIntEnable=1<<ADC1;
    return  (adresult);
    }
  void  EXTRN_Init( void)
    {
   VICIntSelect=0x00000000;                     //dispatch as IRQ 
   PINSEL0=0X00000001; 
      VICVectCntl0=0x20|EXTRN;                      //EXT0 as IRQ slot0 
      VICVectAddr0=(uint32)EXTRN_Int;               //get ad inter service
      VICIntEnable=1<<EXTRN;
 }
   
 void UART0_Sendbyte(uint8 sendbyte)
   {
     U0THR= sendbyte;
    
     while( U0LSR&0X40== 0);
   }
   
  void  RTC_Init( void)
   {
     PREINT=Fpclk/32768-1;
  PREFRAC=Fpclk-(Fpclk/32768)*32768;
  CIIR=0X01;
  VICIntSelect= 0x00000000;                     /*dispatch as IRQ           */  
     VICVectCntl3= 0x20|RTC;                    /*Timer0  as IRQ slot1      */ 
     VICVectAddr3= (uint32)RTC_Int;             /*get timer0 inter service  */
     VICIntEnable= 1<<RTC;                      /*timer0 Enable     */
   }
   
 void UART0_Senddata(uint8 send_bytes, uint8 *buffer)
   {
     uint8 i ;
     for(i=0; i<send_bytes; i++)
         {
           U0THR=*buffer;
            buffer++;
            while( U0LSR&0x40== 0);
         }
   }
  
uint8 UART0_Recebyte( void ) 
  { 
      uint8 Recebyte;
     while(!(U0LSR&0X01));
      Recebyte=U0RBR;
      return (Recebyte);
  }
 
     
void UART0_Recdata( uint8 rece_bytes,uint8 *buffer)
   {
     uint8 i ;
     for(i=0; i<rece_bytes; i++)
        {
          while(!(U0LSR&0X01));
          *buffer=U0RBR;
          buffer++;
         }
   }
  
 /************************************************************/
 /***********************serial1 driver***********************/
 /************************************************************/ 

 void UART1_Senddata(uint8 send_bytes, uint8 *buffer)
   {
     uint8 i ;
     for(i=0;i<send_bytes;i++)
         {
           U1THR=*buffer;
            buffer++;
            while( U1LSR&0x40==0);
         }
   }
  
  
void UART1_Recdata( uint8 rece_bytes,uint8 *buffer)
   {
     uint8 i ;
     for(i=0;i<rece_bytes;i++)
        {
          while(!(U1LSR&0X01));
          *buffer=U1RBR;
          buffer++;
        }
  
   }
  
 void  delayms(uint8 time)
      {
     uint16 i;
  uint16 j;
  uint8  k;

  for(i=0;i<=time;i++)
      {
        for(j=0;j<=10000;j++)
            {
           for(k=0;k<=10000 ;k++)
             {
           ;
        }
      }

   }
   }
        

  void   touchgetx( void ) 
  
    {
   uint8 adtime;
  IOSET=IOSET|0X02;
  IO0CLR=IO0CLR|0X02;
  delayms(10);
  for( adtime=0;adtime<=20;adtime++)
       ;
    }
 

   
   
/**********************************************************/
/***************中断服务程序*******************************/
/**********************************************************/

 /***************************************************************/
 /************************主程序*********************************/
 /***************************************************************/
 
    
int main (  )
{
  
     uint8 volt_high,volt_low,volt_midd; 
     //  IRQEnable( );                     //IRQ enable
      Port_Init( );
      Timer0_Init( );
      UART0_Init( );
      UART1_Init( );
      ADC0_Init( );
      ADC1_Init( );   

   //  while(1) ;
     
    //  UART0_Init( );
     // while(1)
     //    {
      //  UART0_Sendbyte(0x30);
       //   while(1);
       //  }
        
                                  

     
      /***************************************************************/
      /************************AD SUB PROG****************************/
      /***************************************************************/
     
   //   PINSEL1=PINSEL1&(~(0X03<<26))|(0X01<<26);   //pin mapped as ad in
   //   AD0CR=(1<<2)               |                //channel select
   //   (0XFF<<8)                  |                //convert clock frequency
   //   (0<<16)                    |                //software converter
  //    (0<<17)                    |                //clks=0,,11clock con
 //     (1<<21)                    |                //pdn=1;
  //    (0<<22)                    |                //test1:0=00
  //    (1<<24)                    |                //start=1
 //     (0<<27);
  //    while(1);                   
  //  while((ADDR&0X80000000)==0);
  //  adresult=(ADDR>>6)&0x3ff;
     while(1)
     {
         
      
       //    ADCR|=(1<<24) ;
      //     while((AD0DR&0X80000000)==0);
     PINSEL1=0X00000001;

//   EXTMODE= 0X00;

//   VICIntSelect=0x00000000;                     //dispatch as IRQ   
  //    VICVectCntl0=0x20|14;                       //AD0 as IRQ slot0 
  //    VICVectAddr0=(uint32)ADC0_Int;               //get ad inter service
   //   VICIntEnable=1<<14;
//   EXTINT=0X01;

           adresult=(ADDR>>6)&0x3ff;
           voltage1=adresult*330/1023;
           volt_high=voltage1/100;
           volt_midd=voltage1%100/10;
           volt_low=voltage1%10;
           voltage2=(volt_high<<8)|(volt_midd<<4)|volt_low;
    //EXTINT=0X01;
      }
    //return 0;
}