s110 Bootloader for SDK9 not working?

[Raj]

Hi, In my project I am using nrf51822 device and I need to perform dfu operation,for that I am using soft device s110 and boot loader nRF51_SDK_9.0.0_2e23562\examples\dfu\bootloader, it not working on nrf51822 . if i use same softdevice and boot loader on nrf51422 DK board it is working. i don't known where the problem exactly , can any one help me? Can any one guide me which bootloader i need to use for nrf51822, s110 soft device ?

[Hung Bui]

Hi Raj, You should use rev 3 chip with SDK v9.0. If you have rev2, you should use SDK v7.0 and S110 v.7. You still can use S110 v8 but some patch need to be applied ( see release note).

Also if you don't have 32kHz crystal on board, please init the softdevice with 32kHz RC instead of 32kHz crystal ( for example use NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION in ble_stack_init() )