BL600 NUS service and DFU support

[sowmya]

Hello,

I am using BL600A module and Nordic softdevice and SDK9.0. The system is having NUS service and TX and RX characteristic. Now I have a requirement for firmware upgrade OTA.

My question is, Can I use DFU and bootloader without affecting the NUS service and its characteristics to upgrade the firmware?

How it can be done?

Regards,
Sowmya

[sowmya]

No, it is not coming to main. Arguments for the external tool is --family NRF51 --program "#H" and the address is as below:

Update: This is a screenshot after debugging. Hex file is : nrf51422_xxac.hex Axf file: nrf51422_xxac.axf

This is the hex and axf file after changing the RAM registers: nrf51422_xxac.hex nrf51422_xxac.axf

This is the screenshot taken after executing and stopping:

[Vidar Berg]

Please add a screenshot of the register view when you debug the code:

• Start a new debug session and start execution, then stop after few seconds to take the screenshot.

[Vidar Berg]

Can't read the register content in the screenshot you sent, but the code appears to be stuck in the hardfault handler inside the MBR. Please attach the .hex/.axf file you're using.

[sowmya]

Hi Vidar, if I just flash the program using F8 in Keil, I am getting the error : Reading flash area to program to guarantee it is erased. Checking that the area to write is not protected. Programing device.. Then I tried to debug the code, breakpoint is hitting main and when I execute, hardfault is occuring for CRC16 in the following code snippet:

uint32_t dfu_ble_peer_data_get(dfu_ble_peer_data_t * p_peer_data)
{
uint16_t crc;

if (p_peer_data == NULL)
{
    return NRF_ERROR_NULL;
}

crc = crc16_compute((uint8_t *)&m_peer_data, sizeof(m_peer_data), NULL);
if (crc != m_peer_data_crc)
{
    return NRF_ERROR_INVALID_DATA;
}

[Vidar Berg]

Guess the BL600A has 16K of RAM then. Changing the RAM settings in target options should fix this:

IRAM1: 0x20002c00 0x1380 IRAM2: 0x20003F80 0x80

[sowmya]

For testing purpose, I am testing on Evaluation board: NRF51822QFAAG0 which has 256KB flash and 16KB RAM. So for 16KB of RAM, I had changed the IRAM1 and IRAM settings as discussed in one of the thread in forum, but it is also not working.