uart2_trace.c

OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI的双核处理器

#include <stdarg.h>
#include "uart2_trace.h"

void uart2_init()
{
	*(unsigned short*)0xfffb101a |= 0x00c0;     //SOFT 	
        /* Reset the core.  This will set all registers to their reset values. */
     if ((*(unsigned short*)(UART_REG_MDR1_ADDR)) != 0x07)
        {
            *(unsigned short*)(UART_REG_MDR1_ADDR) = 0x07;
        }
     *(unsigned short*)(UART_REG_LCR_ADDR) = 0xbf;
     *(unsigned short*)(UART_REG_DL_LSB_ADDR) = 0x1a;
     *(unsigned short*)(UART_REG_DL_MSB_ADRR)  = 0x00;
     
                         
      *(unsigned short*)(UART_REG_EFR_ADDR) = 0x10;
      *(unsigned short*)(UART_REG_LCR_ADDR) = 0x80;
      *(unsigned short*)(UART_REG_MCR_ADDR) = 0x40;
      *(unsigned short*)(UART_REG_SCR_ADDR) = 0x09;
      *(unsigned short*)(UART_REG_LCR_ADDR) = 0x03;
	  *(unsigned short*)(UART_REG_MDR1_ADDR) = 0x00;   //16x
	  *(unsigned short*)(UART_REG_IER_ADDR) = 0x00;	          
	     
}

void uart2_writeNchar(unsigned char *wr_buffer,unsigned short length)
{
	unsigned short i;
	for(i=0;i<length;i++)
	{
		while((*(unsigned short*)(UART_REG_LSR_ADDR)&0x60) != 0x60);
		*(unsigned short*)(UART_REG_THR_ADDR) = *wr_buffer++;
	}

}

void UA_WriteString (char *buffer)
{
	(void) uart2_writeNchar (buffer, strlen (buffer));
}
					

void UART_Printf(char *data, ...)
{
	char data_temp[256];
	va_list _ap;

	va_start(_ap, data);
	vsprintf(data_temp, data, _ap);
	UA_WriteString(data_temp);
	va_end(_ap);
}

//=====================================================================//
//UART get number                                                      //
//=====================================================================//

char *UART_Receive()
{
int i = 0;
static char data[256];
  do
  {
    while(!((*(unsigned short*)(UART_REG_LSR_ADDR))&0x01)); //wait for data in
    data[i] = *(unsigned short*)(UART_REG_RHR_ADDR);
	i++;
  }while((data[i-1] != '\n') && (data[i-1] != '\r'));

return data;
}

unsigned int UART_GetNum()
{
char *data;
unsigned int number = 0;
int i =0;

data = UART_Receive();

while(data[i] != '\n' && data[i] != '\r')
{
  if((data[0] == '0') && ((data[1] == 'x') || (data[1] == 'X')))
  {
    if((data[i] >= '0') && (data[i] <= '9'))
      number = (int)(data[i] - 0x30) + number * 16;
	else if((data[i] >= 'a') && (data[i] <= 'f'))
	  number = (int)(data[i] - 0x57) + number * 16;
	else if((data[i] >= 'A') && (data[i] <= 'F'))
	  number = (int)(data[i] - 0x37) + number * 16;
  }
  else
  {
    if((data[i] >= '0') && (data[i] <= '9'))
      number = (int)(data[i] - 0x30) + number * 10;
  }
  i++;
}

	return number;

}