Flash memory utilization

[Sébastien Despont]

Dear Nordic Support Team,

I am trying to write some information in the flash memory without success. In the ble_flash.h file, it is specified that the pages 0-127 are reserved to the soft device. So, I can use the next page to store my data, am I right?

Can you tell me why the following code crash ?

uint32_t page = 128;

uint8_t word_count = 1;
uint32_t data_array[2]={0};

err_code = ble_flash_page_write(page,(uint32_t *) &data_array,1);
APP_ERROR_CHECK(err_code);
														
err_code = ble_flash_page_read(page, (uint32_t *) & data_array, &word_count);
APP_ERROR_CHECK(err_code);

[jeff]

static void updateSetting(){
   uint8_t err_code;

simple_uart_putstring((const uint8_t *)"writing Settings\n");

uint32_t* indata = malloc(32*sizeof(uint32_t));

int i;
for (i=0;i<32;i++){
	
	 indata[i] = i;
}

err_code =  ble_flash_page_write 	( 128,	indata,		32	) ;	
APP_ERROR_CHECK(err_code);
}

/**@brief function to get setting from flash */

static void getSetting(){

uint8_t err_code;

simple_uart_putstring((const uint8_t *)"getting Settings\n");


uint32_t *setting0 = malloc(32*sizeof(uint32_t));
uint8_t *length = malloc(4*sizeof(uint8_t));
err_code = ble_flash_page_read(128, setting0, length);
APP_ERROR_CHECK(err_code);

int msg_length = (length[3]<<24 |length[2]<<16 | length[1]<<8 | length[0]) ;



int i=0;
for (i=0;i<msg_length;i++){
	uint32_t value = setting0[i];
	uint8_t result[4];

	result[0] = (value & 0x000000ff);
	result[1] = (value & 0x0000ff00) >> 8;
	result[2] = (value & 0x00ff0000) >> 16;
	result[3] = (value & 0xff000000) >> 24;
	
	char msg[9];
	sprintf(msg,"%08lx\n",(unsigned long)value);
	simple_uart_putstring((const uint8_t *)msg);
}

}