test_uart_rs485.c

2440 开发板的测试程序。包括uart,iic,lcd

#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h" 

/********************************************************************************************************************
【函数名称】void Uart0_Uart1_Test( void )
【功能描述】在串口0和1之间切换
********************************************************************************************************************/
void Uart0_Uart1_Test( void )
{
	U8 m ;
	U8 n = 1 ;

	rGPHCON = ( rGPHCON & (~( 0xf << 4 )) ) | ( 0x0a << 4 );		//TXD0,RXD0
	rGPHCON = ( rGPHCON & (~( 0xf << 8 )) ) | ( 0x0a << 8 );		//TXD1,RXD1
	
   	Uart_Printf( "\nUART1 Test\n" ) ;
   	Uart_Printf( "\nPlease pull out COM cable and plug into the UART1 connector\n" ) ;
   	
   	Uart_Select( 1 ) ;
	while( (m=Uart_GetKey()) != ESC_KEY )
	{
	   	if( m != 0 )  
	   	{
	   		Uart_Printf( "'ESC' key return to UART0, The input of you is " ) ;
	   		Uart_SendByte( m ) ;		Uart_Printf( "\n" ) ;
	   		n = 0 ;
	   	}
	   	else  
	   	{
	   		if( n == 1 )
	   		{
		   		Uart_Printf( "Now is UART1 output, do you see?  Any key to display, 'ESC' key return to UART0 \n" ) ;
		   		n = 1 ;
		   		Delay( 500 ) ;
	   		}
	   	}
	}

   	Uart_Printf( "\nPlease pull out COM cable and plug into the UART0 connector\n" ) ;
   	Uart_Select( 0 ) ;
	while( (m=Uart_GetKey()) != ESC_KEY )
	{
   		Uart_Printf( "Please Enter 'ESC' key to Main menu \n" ) ;
   		Delay( 500 ) ;
	}
}

/********************************************************************************************************************
【函数名称】void Test_Uart1_RS485(void)
【功能描述】UART1用作RS485测试
********************************************************************************************************************/
void Test_Uart1_RS485(void)
{
	U16 m ;
	U32 baud;

	rGPHCON = ( rGPHCON & (~( 0xf << 4 )) ) | ( 0x0a << 4 );		//TXD0,RXD0
	rGPHCON = ( rGPHCON & (~( 0xf << 12 )) ) | ( 0x0a << 12 );		//TXD2,RXD2
	
	Uart_Printf("Test Uart2 Use As RS485,Please select baud rate\n1: 9600\n2: 19200\n3: 57600\n4: 115200\n");
	
	while(1) 
	{
		m = Uart_Getch();
		if( m >= '1' && m <= '4' )
			break;
		if( m == ESC_KEY )
			return;
	}
	
	switch(m)
	{
		case '1':
			baud = 9600;
			break;
		
		case '2':
			baud = 19200;
			break;

		case '3':
			baud = 57600;
			break;

		default:
			baud = 115200;
	}
	
	Uart_Printf("set UART2 baud rate to %d\n", baud);

	rUFCON2 = 0x0;
 	rULCON2 = 0x3;
	rUCON2 = 0x245;
	rUBRDIV2 = ( ( int ) ( FCLK / 16. / baud + 0.5 ) - 1 );    
  
    while(1)
    {
   		m = Uart_GetKey();
		if( m == ESC_KEY )
			break;
			
		if(m) {
			RS485_2_Out_In( TRUE );
			while(!(rUTRSTAT2 & 0x4)); //Wait until THR is empty.
			WrUTXH2(m);
			while(!(rUTRSTAT2 & 0x4)); //Wait until THR is empty.
			RS485_2_Out_In( FALSE );
		}
		
		if((rUTRSTAT2 & 0x1)) //Receive data ready
			Uart_SendByte( RdURXH2() );
    }

}


/********************************************************************************************************************
【函数名称】void Test_Uart2_RS485(void)
【功能描述】UART2用作RS485测试
********************************************************************************************************************/
void Test_Uart2_RS485(void)
{
	U8 m ;
	U8 n = 2 ;

	rGPHCON = ( rGPHCON & (~( 0xf << 4 )) ) | ( 0x0a << 4 );		//TXD0,RXD0
	rGPHCON = ( rGPHCON & (~( 0xf << 12 )) ) | ( 0x0a << 12 );		//TXD2,RXD2
	
   	Uart_Printf( "\nUART2 As RS485 Test\n" ) ;
   	Uart_Printf( "\nPlease pull out COM cable and plug into the RS485 connector\n" ) ;
   	
   	Uart_Select( n ) ;
	while( (m = Uart_GetKey()) != ESC_KEY )
	{
	   	if( m != 0 )  
	   	{
	   		Uart_Printf( "'ESC' key return to UART0, The input of you is " ) ;
	   		Uart_SendByte( m ) ;		Uart_Printf( "\n" ) ;
	   		n = 0 ;
	   	}
	   	else  
	   	{
	   		if( n == 2 )
	   		{
		   		Uart_Printf( "Now is UART2 output, do you see?  Any key to display, 'ESC' key return to UART0 \n" ) ;
		   		n = 2 ;
		   		Delay( 500 ) ;
	   		}
	   	}
	}

   	Uart_Printf( "\nPlease pull out COM cable and plug into the UART0 connector\n" ) ;
   	Uart_Select( 0 ) ;
	while( (m=Uart_GetKey()) != ESC_KEY )
	{
   		Uart_Printf( "Please Enter 'ESC' key to Main menu \n" ) ;
   		Delay( 500 ) ;
	}
}


/********************************************************************************************************************
【函数名称】void Test_Uart2_RS485(void)
【功能描述】UART2用作RS485测试
********************************************************************************************************************/
/*
void Test_Uart2_RS485(void)
{
	U8 m ;
	U8 n = 2 ;

	rGPHCON = ( rGPHCON & (~( 0xf << 4 )) ) | ( 0x0a << 4 );		//TXD0,RXD0
	rGPHCON = ( rGPHCON & (~( 0xf << 8 )) ) | ( 0x0a << 8 );		//TXD1,RXD1
	rGPHCON = ( rGPHCON & (~( 0xf << 12 )) ) | ( 0x0a << 12 );		//TXD2,RXD2

	rGPBCON = ( rGPBCON & ~( 0x3 << 14 ) ) | ( 0x01 << 14 );		//OUTPUT
	rGPBCON = ( rGPBCON & ~( 0x3 << 16 ) ) | ( 0x01 << 16 );		//OUTPUT

	//rGPBDAT = ( rGPBDAT & ~( 0x1 << 7 ) ) | ( 0x01 << 7 );		//RS485 TX
	rGPBDAT = ( rGPBDAT & ~( 0x1 << 7 ) ) | ( 0x00 << 7 );		//RS485 RX

	rGPBDAT = ( rGPBDAT & ~( 0x1 << 8 ) ) | ( 0x01 << 8 );		//RS485 TX
	//rGPBDAT = ( rGPBDAT & ~( 0x1 << 8 ) ) | ( 0x00 << 8 );		//RS485 RX
	
   	Uart_Printf( "\nUART2 As RS485 Test\n" ) ;
   	Uart_Printf( "\nPlease pull out COM cable and plug into the RS485 connector\n" ) ;
   	
	while( 1 )
	{
		//rUTXH1 = 0x55 ;
		//rUTXH1 = 0xaa ;
		
		rUTXH2 = 0x55 ;
		rUTXH2 = 0xaa ;
	}

}*/