main.c

ATMEL ATSAM7S64处理器部分控制程序。

//*--------------------------------------------------------------------------------------
//*      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           : Boot_loader main file
//* Object              :
//* Translator          :
//* 1.0 19/03/01 HI		: Creation
//* 1.1 02/10/02 FB		: Add on Svc DataFlash
//* 1.2 13/Sep/04 JPP	: Add DBGU
//*--------------------------------------------------------------------------------------

#include "board.h"
#include "dbgu.h"
#include "cdc_enumerate.h"

#define MSG_SIZE 				1000

struct _AT91S_CDC 	pCDC;

//*----------------------------------------------------------------------------
//* \fn    AT91F_USB_Open
//* \brief This function Open the USB device
//*----------------------------------------------------------------------------
void AT91F_USB_Open(void)
{
    // Set the PLL USB Divider
    AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;

    // Specific Chip USB Initialisation
    // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock
    AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;
    AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);

    // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO
    // Set in PIO mode and Configure in Output
    AT91F_PIO_CfgOutput(AT91C_BASE_PIOA,AT91C_PIO_PA16);
    // Clear for set the Pul up resistor
    AT91F_PIO_ClearOutput(AT91C_BASE_PIOA,AT91C_PIO_PA16);

    // CDC Open by structure initialization
    AT91F_CDC_Open(&pCDC, AT91C_BASE_UDP);
}

//*--------------------------------------------------------------------------------------
//* Function Name       : main
//* Object              :
//*--------------------------------------------------------------------------------------
Main ( void )
{
	char data[MSG_SIZE];
	char message[30];
	unsigned int length = 0;

    // Init trace DBGU
    AT91F_DBGU_Init();
    AT91F_DBGU_Printk("\n\r-I- BasicUSB\n\r 0) Set Pull-UP 1) Clear Pull UP\n\r");

    // Init USB device
    AT91F_USB_Open();
    // Start waiting some cmd
    while (1)
   {
	// Check enumeration
	if (pCDC.IsConfigured(&pCDC)) {
            // Loop
	    length = pCDC.Read(&pCDC, data, MSG_SIZE);
	    pCDC.Write(&pCDC, data, length);
	    sprintf(message,"-I- Len %d\n\r",length);
	// send char
            AT91F_DBGU_Frame(message);
	}
   }
}