Bootloader for nRF51422 ?

[Robin]

Hello Everybody,

I need to write a boot loader for nRF51422. Any suggestion for it, reference site ,sample code for quick reference ?

thanks and regards Robin Singh

[Robin]

Hi Audun/All,

I am referring the device firmware update example from nrf51822 and trying it for nrf51422. but i face on problem about IROM and IRAM setting and jump to final application.

First it seems to be if i flash any sample program other then 0xA000 , it does not work. Do i need to modify any setting for it. or soft device always jump to 0xa000 ?

1. i am trying to flash the bootloader @0x1A000 and APP at 0xA000 . it is not working for me. any suggestion ? what setting i need to modify on nRF51422

2. i tried another approach, boot loader at 0xa000 and size = 0x26000 then app at 0x30000 size = 0x2800. i am writing a .hex file as app on 0x30000. but when i jump to app via function pointer at 0x30000 , it does not boot this app. ========================================================= my sample code snippet:

     start_packet_handle(); //just setup and erase the flash 
     data_packet_handle();//here i write the .hex file to 0x30000
   

   //uint32_t n_err_code = sd_softdevice_disable(); //this i tried to comment out and with out comment out. // APP_ERROR_CHECK(n_err_code); //(void)sd_softdevice_forward_to_application(); // i do not have this call on softdevice.

   my_application_main_t application_main = *(my_application_main_t *)(0x30000+4); if (application_main != (my_application_main_t) 0xFFFFFFFF) {

    application_main();
   

}

3. My application image is a sample uart program from ANT sample code , with IROM start = 0x30000 and size = 0x2800.

can you please suggest me what i am missing ?

4. why i am not able to find out this api sd_softdevice_forward_to_application(); does it only for BLE chipset?

on nrf51422 sdk. compiler says its not defined ?

thanks Robin Singh