main.c

Go to the documentation of this file.

/*
 * @brief Startup file for SPIFI programmer example
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#include <string.h>

#include "flash_config.h"

/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/

static uint8_t data_buffer[PROG_SIZE];
static SPIFIobj spifi_obj;

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

/*****************************************************************************
 * Private functions
 ****************************************************************************/

/* Verify the spifi data */
static int verify_spifi_data(const uint8_t *buff, int size)
{
 int i;
 for (i = 0; i < size; i++) {
  if (*buff++ == (uint8_t) i) {
   break;
  }
 }
 return i == size ? 0 : i;
}

/* Initializes the buffer from 00 to FF */
static void prepare_write_data(uint8_t *buff, int size)
{
 int i;
 for (i = 0; i < size; i++) {
  *buff++ = (uint8_t) i;
 }
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/

int main(void)
{
 SPIFIobj *obj = &spifi_obj;
 uint32_t spifi_clk_mhz;
 SPIFIopers opers;
 int ret;

 spifi_rom_init();

#ifndef USE_SPIFI_LIB
 /* Decrease the CPU Clock for accessing ROM */
 Chip_Clock_SetCPUClockDiv(2);
#endif

 /* Initialize the board & LEDs for error indication */
 Board_Init();

 DEBUGSTR("SPIFI Demo\r\n");

 /* Initialize SPIFI interface */
 Board_SPIFI_Init();

 /* Enable SPIFI Clocking */
 Chip_SPIFI_Init();

 /* Since this code runs from SPIFI no special initialization required here */
 prepare_write_data(data_buffer, sizeof(data_buffer));

 spifi_clk_mhz = Chip_Clock_GetSPIFIClockRate() / 1000000;

 /* Typical time tCS is 20 ns min, we give 200 ns to be on safer side */
 ret = spifi_init(obj, spifi_clk_mhz / 5, S_RCVCLK | S_FULLCLK, spifi_clk_mhz);
 if (ret) {
  DEBUGOUT("Error 0x%x: Initializing SPIFI interface!\r\n", ret);
  Board_LED_Set(1, 1);
  goto end_prog;
 }

 /* Prepare the operations structure */
 memset(&opers, 0, sizeof(SPIFIopers));
 opers.dest = (char *) SPIFI_WRITE_SECTOR_OFFSET;
 opers.length = sizeof(data_buffer);
 opers.scratch = NULL;
 opers.protect = 0;
 opers.options = S_VERIFY_PROG;

 /* NOTE: All interrupts must be disabled before calling program as
  * any triggered interrupts might attempt to run a code from SPIFI area
  */
 ret = spifi_program(obj, (char *) data_buffer, &opers);
 if (ret) {
  DEBUGOUT("Error 0x%x: Programming of data buffer to SPIFI Failed!\r\n", ret);
  Board_LED_Set(1, 1);
  goto end_prog;
 }
 DEBUGSTR("SPIFI Programming successful!\r\n");

 if (verify_spifi_data((uint8_t *) SPIFI_WRITE_SECTOR_ADDRESS, sizeof(data_buffer))) {
  DEBUGSTR("Error: Verifying the SPIFI data\r\n");
  Board_LED_Set(1, 1);
  goto end_prog;
 }

 Board_LED_Set(0, 1);
 DEBUGSTR("SPIFI Data verified!\r\n");

end_prog:
 while (1) {
  __WFI();
 }
}