Hi @ErichStyger I used the sdk example to save data in flash and it worked. But when I commented all the write and erase function of flash and then try to read the flash data only but it jumps into hardfault_handler file. My s_buffer_rbc variable is not able to get the value from the flash.Why it is showing the error in following code. I am sharing the code snippet.
/*
* Copyright 2018 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_debug_console.h"
#include "pin_mux.h"
#include "board.h"
#include "fsl_iap.h"
#include "fsl_iap_ffr.h"
#include "fsl_common.h"
#include "fsl_power.h"
////////////////////////////////////////////////////////////////////////////////
// Definitions
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
// Prototypes
////////////////////////////////////////////////////////////////////////////////
static void verify_status(status_t status);
static void error_trap();
////////////////////////////////////////////////////////////////////////////////
// Variables
////////////////////////////////////////////////////////////////////////////////
#define BUFFER_LEN 512 / 4
static uint32_t s_buffer_rbc[BUFFER_LEN];
////////////////////////////////////////////////////////////////////////////////
// Code
////////////////////////////////////////////////////////////////////////////////
int main()
{
flash_config_t flashInstance;
static uint32_t status;
uint32_t destAdrss; /* Address of the target location */
uint32_t failedAddress, failedData;
uint32_t pflashBlockBase = 0;
uint32_t pflashTotalSize = 0;
uint32_t pflashSectorSize = 0;
uint32_t PflashPageSize = 0;
const uint32_t s_buffer[BUFFER_LEN] = {12, 32, 13, 84};
/* Init board hardware. */
/* set BOD VBAT level to 1.65V */
POWER_SetBodVbatLevel(kPOWER_BodVbatLevel1650mv, kPOWER_BodHystLevel50mv, false);
/* attach 12 MHz clock to FLEXCOMM0 (debug console) */
CLOCK_AttachClk(BOARD_DEBUG_UART_CLK_ATTACH);
/* enable clock for GPIO*/
CLOCK_EnableClock(kCLOCK_Gpio0);
CLOCK_EnableClock(kCLOCK_Gpio1);
BOARD_InitBootPins();
BOARD_BootClockFROHF96M();
BOARD_InitDebugConsole();
/* Print basic information for Flash Driver API.*/
PRINTF("\r\nFlash driver API tree Demo Application...\r\n");
/* Initialize flash driver */
PRINTF("Initializing flash driver...\r\n");
if (FLASH_Init(&flashInstance) == kStatus_Success)
{
PRINTF("Flash init successfull!!. Halting...\r\n");
}
else
{
error_trap();
}
/* Get flash properties kFLASH_ApiEraseKey */
FLASH_GetProperty(&flashInstance, kFLASH_PropertyPflashBlockBaseAddr, &pflashBlockBase);
FLASH_GetProperty(&flashInstance, kFLASH_PropertyPflashSectorSize, &pflashSectorSize);
FLASH_GetProperty(&flashInstance, kFLASH_PropertyPflashTotalSize, &pflashTotalSize);
FLASH_GetProperty(&flashInstance, kFLASH_PropertyPflashPageSize, &PflashPageSize);
/* print welcome message */
PRINTF("\r\n PFlash Example Start \r\n");
/* Print flash information - PFlash. */
PRINTF("\tkFLASH_PropertyPflashBlockBaseAddr = 0x%X\r\n", pflashBlockBase);
PRINTF("\tkFLASH_PropertyPflashSectorSize = %d\r\n", pflashSectorSize);
PRINTF("\tkFLASH_PropertyPflashTotalSize = %d\r\n", pflashTotalSize);
PRINTF("\tkFLASH_PropertyPflashPageSize = 0x%X\r\n", PflashPageSize);
/*
PAGE_INDEX_FROM_END = 1 means the last page,
PAGE_INDEX_FROM_END = 2 means (the last page -1 )...
*/
#ifndef PAGE_INDEX_FROM_END
#define PAGE_INDEX_FROM_END 1U
#endif
destAdrss = pflashBlockBase + (pflashTotalSize - (PAGE_INDEX_FROM_END * PflashPageSize));
/* Verify programming by reading back from flash directly */
for (uint32_t i = 0; i < BUFFER_LEN; i++)
{
s_buffer_rbc[i] = *(volatile uint32_t *)(destAdrss + i * 4);
if (s_buffer_rbc[i] != s_buffer[i])
{
error_trap();
}
}
PRINTF("\r\n Successfully Programmed and Verified Location 0x%x -> 0x%x \r\n", destAdrss,
(destAdrss + sizeof(s_buffer)));
/* resume flash memory status */
status = FLASH_Erase(&flashInstance, destAdrss, PflashPageSize, kFLASH_ApiEraseKey);
PRINTF("Done!\r\n");
while (1)
{
}
}
void verify_status(status_t status)
{
char *tipString = "Unknown status";
switch (status)
{
case kStatus_Success:
tipString = "Done.";
break;
case kStatus_InvalidArgument:
tipString = "Invalid argument.";
break;
case kStatus_FLASH_AlignmentError:
tipString = "Alignment Error.";
break;
case kStatus_FLASH_AccessError:
tipString = "Flash Access Error.";
break;
case kStatus_FLASH_CommandNotSupported:
tipString = "This API is not supported in current target.";
break;
default:
break;
}
PRINTF("%s\r\n\r\n", tipString);
}
/*
* @brief Gets called when an error occurs.
*/
void error_trap(void)
{
PRINTF("\r\n\r\n\r\n\t---- HALTED DUE TO FLASH ERROR! ----");
while (1)
{
}
}
////////////////////////////////////////////////////////////////////////////////
// EOF
////////////////////////////////////////////////////////////////////////////////
