lib_flash_at49.c

使用JTAG口对AT91R40008芯片进行FLASH编程的程序

//*-----------------------------------------------------------------------------
//*      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               : lib_flash_at49.c
//* Object                  : FLASH programmer for :
//*                             - AT49BV1604/AT49BV1604T
//*                             - AT49BV1614/AT49BV1604T
//*                             - AT49BV8011/AT49BV8011T
//*                             - AT49BV8011/AT49BV8011T
//*
//* 1.1 06/11/00 JPP        : Creation
//*-----------------------------------------------------------------------------

//* --------------------------- include file ----------------------------------
#include    "lib_flash_at49.h"

#define LED_3		1<<3
#define LED_4		1<<4
#define LED_5		1<<5
#define LED_6		1<<6
#define LED_16		1<<16
#define LED_17		1<<17
#define LED_18		1<<18
#define LED_19		1<<19

//* test
void led_on(int state, int led){

	int *pt=(int *)0xFFFF0030;
	if (state)	pt++;
	*pt = led;
}

//*----------------------------------------------------------------------------
//* Function Name       : read_dbg_data
//* Object              : read debug communication data register
//* Input Parameters    :
//* Output Parameters   : R0
//*----------------------------------------------------------------------------
extern u_int read_dbg_data(void);

//*----------------------------------------------------------------------------
//* Function Name       : read_dbg_control
//* Object              : read debug communication data register
//* Input Parameters    :
//* Output Parameters   : R0
//*----------------------------------------------------------------------------
extern u_int read_dbg_control(void);

//*----------------------------------------------------------------------------
//* Function Name       : write_dbg_data
//* Object              : read debug communication data register
//* Input Parameters    : Val = R0
//* Output Parameters   :
//*----------------------------------------------------------------------------
extern void write_dbg_data(u_int val);


//*----------------------------------------------------------------------------
//* Function Name       : Pause
//* Object              : wait flash response
//* Input Parameters    : none
//* Output Parameters   : none
//*----------------------------------------------------------------------------
static void Pause(void)
{
    int count;
    for (count=0;count < TIME_OUT/10 ;count++)
    {
        /* Do nothing - just wait */
    }
}

//* --------------------------- Export function -------------------------------

//*----------------------------------------------------------------------------
//* Function Name       : flash_at49_identify
//* Object              : Get the device id
//* Input Parameters    : <sart_addr> Flash base address
//* Output Parameters   : device_code or 0xFFFF if bad manuf code
//*----------------------------------------------------------------------------
//*flash_word flash_at49_identify ( flash_word *base_addr )
//* Begin
int main()
{
	u_int size;
	flash_word 		*base_addr;
    flash_word      manuf_code ;
    flash_word      device_code ;

/*	led_on(0, LED_3);
	led_on(0, LED_4);
	led_on(0, LED_5);
	led_on(0, LED_6);
	led_on(0, LED_16);
	led_on(0, LED_17);
	led_on(0, LED_18);
	led_on(0, LED_19);
*/

	led_on(1, LED_16);
	
	//* Get base address
	while( ((read_dbg_control() & R_BIT) != R_BIT) ); //* Wait a new data to read
	base_addr = (flash_word *)read_dbg_data();

	led_on(1, LED_17);

    Pause();

    //* Enter Software Product Identification Mode
    *(base_addr + FLASH_SEQ_ADD1) = FLASH_CODE1;
    *(base_addr + FLASH_SEQ_ADD2) = FLASH_CODE2;
    *(base_addr + FLASH_SEQ_ADD1) = ID_IN_CODE;

    //* Read Manufacturer and device code from the device
    manuf_code  = *base_addr ;
    device_code = *(base_addr + 1) ;

    //* Exit Software Product Identification Mode
    *(base_addr + FLASH_SEQ_ADD1) = FLASH_CODE1;
    *(base_addr + FLASH_SEQ_ADD2) = FLASH_CODE2;
    *(base_addr + FLASH_SEQ_ADD1) = ID_OUT_CODE;

	led_on(1, LED_3);

	//* Send the data
	while( ((read_dbg_control() & W_BIT) == W_BIT) ); //* Wait a new data to write
	write_dbg_data((u_int)manuf_code);
	
	led_on(1, LED_4);

	while( ((read_dbg_control() & W_BIT) == W_BIT) ); //* Wait a new data to write
	write_dbg_data((u_int)device_code);


	while(1){

		led_on(1, LED_5);

		for (size=0; size<300000;size++);

		led_on(0, LED_5);

		for (size=0; size<300000;size++);

	}
}

//* End