centry.c

这是arm10上面的linux环境下的串口通信源程序,方便学习和调试

#include "pxa-regs.h"
#include "GPIO.h"
#include "types.h"
#include "serial.h"

void FFUART_GPIO_Init()
{
	GPDR1 &= ~GPIO_34;
	GPDR1 |= GPIO_39;
	GAFR1_L = GPIO_34_AF1_FFRXD | GPIO_39_AF2_FFTXD;
	CKEN |=CKEN6_FFUART;
}

void CEntry()
{
	char c;

	FFUART_GPIO_Init();
	SerialInit(baud115k2);
	SerialOutputString("\n  ***************************************************************************\n");
	SerialOutputString("  *                                                                         *\n");
	SerialOutputString("  *                             Welcom To EFlag                             *\n");
	SerialOutputString("  *                                                                         *\n");
	SerialOutputString("  ***************************************************************************\n");
	SerialOutputString("\n");
	SerialOutputString("\nThis is a FFUART test,Please input any key:\n>");

	while(1)
	{
		/* try to get a byte from the serial port */
		while(!SerialInputByte(&c));

		if((c == '\r') || (c == '\n')) {
			/* print newline */
			SerialOutputByte('\n');
		} else if(c == '\b') {
				/* cursor one position back. */
				SerialOutputString("\b \b");
			
		} else {
			/* print character */
			SerialOutputByte(c);
		}
	}
}