uart0.c

32位arm9微处理器S3C2410的异步串口测试源代码

#include <string.h>
#include <stdlib.h>
#include "2410addr.h"
#include "2410lib.h"
#include "def.h"
#include "uart0.h"
//#include "config.h"
#define	ESC_KEY		0x1b

void Uart_Port_Set(void);
void Uart_Port_Return(void);

void __irq Uart0_TxInt(void);
void __irq Uart0_RxIntOrErr(void);
void __irq Uart0_TxDmaDone(void);
void __irq Uart0_RxDmaDone(void);
void __irq Uart0_RxDmaOrErr(void);
void __irq Uart0_TxFifo(void);
void __irq Uart0_RxFifoOrErr(void);
void __irq Uart0_AfcTx(void);
void __irq Uart0_AfcRxOrErr(void);

void __sub_Uart0_RxInt(void);
void __sub_Uart0_RxFifo(void);
void __sub_Uart0_RxAfc(void);
void __sub_Uart0_RxErrInt(void);


volatile U16 rx_dncs;
volatile U32 rx_point,rx_isdone,rx_filesize,rx_checksum;
volatile U32 isDone,isTxInt,isRxInt,tx_cnt,tx_end,rx_cnt,rx_end,afc_err;
volatile U8 *txdataPt;
volatile U8 *txdataFl;
volatile U8 *rxdataPt;
volatile U8 *rxdataCk;


volatile U32 save_rGPHCON,save_rGPHDAT,save_rGPHUP;
volatile U32 save_ULCON0,save_UCON0,save_UFCON0,save_UMCON0;
volatile U32 save_ULCON1,save_UCON1,save_UFCON1,save_UMCON1;
volatile U32 save_ULCON2,save_UCON2,save_UFCON2,save_UMCON2;

volatile static char *uart0TxStr;
volatile static char *uart0RxStr;

volatile static char *uart2TxStr;
volatile static char *uart2RxStr;

void Uart_Port_Set(void)
{
    //Push UART GPIO port configuration
    save_rGPHCON=rGPHCON; 
    save_rGPHDAT=rGPHDAT;
    save_rGPHUP=rGPHUP;
    //Configure UART port
    rGPHCON&=0x3c0000;
    rGPHCON|=0x2faaa;	// nRTS1,nCTS1
    rGPHUP|=0x1ff;	//Uart port pull-up disable
    //rINTSUBMSK=0x7ff;   //SUBINT ALL MASK
    //Push Uart control registers 
    save_ULCON0=rULCON0;   		
    save_UCON0=rUCON0;	   	
    save_UFCON0=rUFCON0;   		
    save_UMCON0=rUMCON0;   		
    save_ULCON1=rULCON1;		
    save_UCON1 =rUCON1;		
    save_UFCON1=rUFCON1;		
    save_UMCON1=rUMCON1;	
    save_ULCON2=rULCON2;		
    save_UCON2 =rUCON2;		
    save_UFCON2=rUFCON2;		
    save_UMCON2=rUMCON2;		
    //Initialize UART1,2 port
}       
        
void Uart_Port_Return(void)
{       
    //Pop UART GPIO port configuration
    rGPHCON=save_rGPHCON;
    rGPHDAT=save_rGPHDAT;
    rGPHUP=save_rGPHUP;
    //Pop Uart control registers 
    rULCON0=save_ULCON0;   		
    rUCON0 =save_UCON0;   	
    rUFCON0=save_UFCON0;   		
    rUMCON0=save_UMCON0;   		
    rULCON1=save_ULCON1;		
    rUCON1 =save_UCON1;	
    rUFCON1=save_UFCON1;		
    rUMCON1=save_UMCON1;
    rULCON2=save_ULCON2;		
    rUCON2 =save_UCON2;	
    rUFCON2=save_UFCON2;		
    rUMCON2=save_UMCON2;		
}

void Uart_Uclk_En(int ch,int baud)
{
    /*
    int ch, baud;
    Uart_Printf("\nSelect UART channel[0:UART0/1:UART1/2:UART2]:\n");
    ch=Uart_GetIntNum();
    Uart_Printf("\nSelect baud rate :\n");
    baud=Uart_GetIntNum();
    */
    if(ch == 0) {
   	Uart_Select(0);
    	rUCON0|=0x400;	// Select UCLK
     	rUBRDIV0=( (int)(UCLK/16./baud) -1 );	//Baud rate divisior register
    	Uart_Printf("UCLK is enabled by UART0.\n"); 
    	}
    else if(ch==1){
    	Uart_Select(1);
    	rUCON1|=0x400;	// Select UCLK
        rUBRDIV1=( (int)(UCLK/16./baud) -1 );	//Baud rate divisior register
        Uart_Select(0);
        Uart_Printf("UCLK is enabled by UART1.\n");
    	}
    else {
    	Uart_Select(2);
    	rUCON2|=0x400;	// Select UCLK
        rUBRDIV2=( (int)(UCLK/16./baud) -1 );	//Baud rate divisior register
        Uart_Select(0);
        Uart_Printf("UCLK is enabled by UART2.\n");
    	}
    //for(i=0;i<100;i++);	// For the satble operation
}

void Uart_Pclk_En(int ch, int baud)
{
    /*
    int ch, baud;
    Uart_Printf("\nSelect UART channel[0:UART0/1:UART1/2:UART2]:\n");
    ch=Uart_GetIntNum();
    Uart_Printf("\nSelect baud rate :\n");
    baud=Uart_GetIntNum();
    */
    
    if(ch == 0) {
    	Uart_Select(0);
    	rUCON0&=0x3ff;	// Select PCLK
   	rUBRDIV0=( (int)(PCLK/16./baud) -1 );	//Baud rate divisior register
   	Uart_Printf("PCLK is enabled by UART0.\n"); 
    	}
    else if(ch==1){
    	Uart_Select(1);
    	rUCON1|=0x3ff;	// Select PCLK
   	rUBRDIV1=( (int)(PCLK/16./baud) -1 );	//Baud rate divisior register
   	Uart_Select(0);
   	Uart_Printf("PCLK is enabled by UART1.\n");
    	}
    else {
    	Uart_Select(2);
    	rUCON2|=0x3ff;	// Select PCLK
   	rUBRDIV2=( (int)(PCLK/16./baud) -1 );	//Baud rate divisior register
   	Uart_Select(0);
   	Uart_Printf("PCLK is enabled by UART2.\n");
    	}
    //for(i=0;i<100;i++);	// For the satble operation
}

void Test_Uart0(void)
{
    char rx;
    Uart_Port_Set(); 
    Uart_Select(0);    


    //Clock,Tx:Def,Rx:Def,Rx timeout:x,Rx error int:x,Loop-back:x,Send break:x,Tx:int,Rx:int
    Uart_TxEmpty(0); //wait until tx buffer is empty.

    Uart_Printf("\n[Uart channel 0 Rx]:\n");
    Uart_Printf("you will see the characters which was typed by you. ESC to quit\n");

    Uart_TxEmpty(0); //wait until tx buffer is empty.

   while(1)
 	{
 		if(rUTRSTAT0&0x1)
 		  {
 			rx=rURXH0;
 			Uart_Printf("%c",rx);
 		  }
 		if(rx==0x0d)
 		   Uart_Printf("\r");

 		if(rx==ESC_KEY)
 		  break;
 	}

   Uart_Printf("\n \n fft2410 uart test finished\n");
   Uart_Port_Return();
}