dbgu.c

AT91SAM7SE系列IAR编程中外扩NAND的源码。

//*----------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : dbgu.c
//* Object              : DBGU routines written in C
//* Creation            : JG   16/Aug/2004
//*----------------------------------------------------------------------------

// Include Standard files
#include "project.h"

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_Printk
//* \brief This function is used to send a string through the DBGU channel (Very low level debugging)
//*----------------------------------------------------------------------------
void AT91F_DBGU_Printk(char *buffer) // \arg pointer to a string ending by \0
{
	while(*buffer != '\0') {
		while (!AT91F_US_TxReady((AT91PS_USART)AT91C_BASE_DBGU));
		AT91F_US_PutChar((AT91PS_USART)AT91C_BASE_DBGU, *buffer++);
	}
}

void Init_DBGU(unsigned int uClock)
{
    // Open PIO for DBGU
    AT91F_DBGU_CfgPIO();
	
    // Configure DBGU
    AT91F_US_Configure(
		(AT91PS_USART)AT91C_BASE_DBGU, // DBGU base address
		uClock,            	       // Master Clock
		AT91C_US_ASYNC_MODE,           // mode Register to be programmed
		115200,                        // baudrate to be programmed
		0                              // timeguard to be programmed
    );

    // Enable Transmitter
    AT91F_US_EnableTx((AT91PS_USART)AT91C_BASE_DBGU);
    // Enable Receiver
    AT91F_US_EnableRx((AT91PS_USART)AT91C_BASE_DBGU);
}