unabale to erase/write a flash memory after ble_stack_init()

[chandru jasi]

Dear !!

Good day!!

unable to erase/write a flash memory after ble_stack_init() if writ e the event to flash memory , <error> app: Fatal error is coming kindly suggest me what is the that problem, and if it is write flash memory before the ble_stack_init(), it writing succefully. 

Note; Im using ble_app_templet projects for nrf52840 

Regards

Chandru.A

[Jared]

Hi,

Could you share the code that shows how you write to flash?

Also, specify where in your program the error is returned?

regards

Jared

[chandru jasi]

Dear sir,

FYR,

Sir here Im getting

NRF_BREAKPOINT_COND; fatal error
// On assert, the system can only recover with a reset.

here the code

Note: When i call before call it is working as fine . plz tell me sir what is the solutions for it

nvm_write();

ble_stack_init();

int main(void)
{

//nrf_delay_ms(2000);
bool erase_bonds;
// uint8_t ble_name[20]="WELCOME GYUS";
// p_addr =(uint8_t *)l_addr; // retrive thge data 1byte

uint32_t l_addr = 0x000ff000; // Last page start address 255

uint8_t * p_addr =(uint8_t *)l_addr; // retrive thge data 1byte

//uint8_t k[MAX_BUFF];
uint8_t k[] ="GOOD_DAY!!";

log_init();
timers_init();
buttons_leds_init(&erase_bonds);
power_management_init();

ble_stack_init();
nvm_write();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
peer_manager_init();

nrf_gpio_cfg_output(RED_LED);
nrf_gpio_cfg_output(GREEN_LED);
nrf_gpio_cfg_output(BLUE_LED);
nrf_gpio_pin_set(BLUE_LED);
nrf_gpio_pin_set(GREEN_LED);
nrf_gpio_pin_set(RED_LED);

saadc_init();


// Start execution.
NRF_LOG_INFO("BLE_APPLICATIONS_STARTED.");
/* application_timers_start(); // for other service
for (uint32_t i = 0; i < strlen(tx_data); i++) // tx_data conatains the welcome message
{
while (app_uart_put(*(tx_data+i)) != NRF_SUCCESS); // transimit to PC this NRF success will be wait for '1' byte transmitted.
nrf_delay_ms(100);
//printf("\r\n Transmitted=%c\n\r",tx_data[i]);
//nrf_delay_ms(500);
}*/

advertising_start(erase_bonds);
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}

// called fun

void nvm_write()
{
NRF_LOG_INFO("Application started");
NRF_LOG_INFO("Erasing page 255...");
nrf_nvmc_page_erase(l_addr); // erase the page
nrf_delay_ms(500);
// show the message
NRF_LOG_INFO("Page erased successfully");
// inform user about the step being taken
NRF_LOG_INFO("Writing the value to the given address");
// nrf_nvmc_write_words(l_addr,k, sizeof(k));
nrf_nvmc_write_bytes(l_addr,k, sizeof(k));
nrf_delay_ms(500);
// show the message
NRF_LOG_INFO("Word is written to the flash");
// Read the flash word by word and display the data over log
for(int i = 0; i<sizeof(k); i++)
{
NRF_LOG_INFO("The Data read from flash is: %c", *(p_addr + i)); //using an arithmatic pointer

}
}

[Alex@harmoniumLED]

Hello.

A bit late but still.

This problem may happen if you use Bootloader, which sets protection on some memory regions, like MBR, SD and Bootloader itself. It sets protection - and you can not clear those bits any more, until new reset happens.

Solution: got to the Bootloader's source code, eliminate setting this protection, re-build, flash new bootloader.

Registers: BPROT