Secure OTA in custom Board

RE: Secure OTA in custom Board

bjorn-spockeli — Wed, 26 Jul 2017 11:15:16 GMT

Happy to help :) I would appreciate if you could mark the answer as correct/accepted by clicking the check mark in the grey circle to the left of the answer.

RE: Secure OTA in custom Board

Nilesh Bhavsar — Wed, 26 Jul 2017 10:34:36 GMT

Thank you for quick response. It's working now.

RE: Secure OTA in custom Board

bjorn-spockeli — Wed, 26 Jul 2017 09:35:58 GMT

Yes, the RL-51822-A1 uses the QFAA variant(i.e. 16kB RAM) so you will have to adjust the memory settings according to this answer, i.e.

IRAM1 Start: 0x200025E0 Size: 0x1A20

or if you're using gcc and linker scripts

RAM (rwx) :  ORIGIN = 0x200025E0, LENGTH = 0x1A20

RE: Secure OTA in custom Board

Nilesh Bhavsar — Wed, 26 Jul 2017 07:40:57 GMT

I have done this setting but my custom board not emitted "DFUtarg".

Any IROM/IRAM setting require in keil for uploading bootloader in this custom board?

RE: Secure OTA in custom Board

bjorn-spockeli — Tue, 25 Jul 2017 12:45:31 GMT

The RL-51822-A1 does not have the optional 32kHz crystal, so you have to set the low frequency clock source to the internal RC oscillator. This is done by definingNRF_CLOCK_LFCLKSRC as shown below in pca10028.h (or custom_board.h if you've created your own board file)

#define NRF_CLOCK_LFCLKSRC      {.source        = NRF_CLOCK_LF_SRC_RC,            \
                                 .rc_ctiv       = 16,                                \
                                 .rc_temp_ctiv  = 2,                                \
                                 .xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM