Hi,
I am currently trying to perform DFU update over BLE, I am working on SDK v11.0, and Softdevice S130 v2.0.0. My traget is an nRF51822-QFACA1.
When I enter in bootloader mode, everything works fine until I am trying to upload trhough BLE an Init packet from my smartphone with the nRF Toolbox app.
When an app is already flashed on the device, bootloader_app_is_valid returns 0, then it enters in bootloader_dfu_start() and waits for events. When I launch the upload of the new firmware, the device goes back directly to bootloader_app_is_valid (bootloader_dfu_start doesn't seems to return according to the RTT trace), then do a system reset, and the bootloader restarts.
When I have an app flashed and I use the following command :
nrfjprog --family nrf51 --memwr 0x3fc00 --val 1, I have to force the device to go in DFU with a button, which is normal. Then in DFU mode, the bootloader_app_valid function goes in the following condition :
"(p_bootloader_settings->bank_0 == BANK_VALID_APP)", which is ok and the CRC variables are the following : 'image_crc = 0, bank_0_crc = 0', then the bootloader_dfu_start function begins and waits for events. Then when I try to update the firmware, the program goes back to bootloader_app_is_valid function, which does the same than the first time, and then the bootloader starts the old version of the app.
When I have no app already flashed, a reset is done and the bootloader restarts. I noticed in this case that in the bootloader_app_is_valid function, the "(*((uint32_t *)app_addr) == EMPTY_FLASH_MASK)" condition is true, so the function returns false, and the device reset directly after that.
From know I didn't see any errors, could you please help me to understand what to do to solve this problem ?
Best regards,
Guillaume
