mcuboot to perform peripheral diagnostics on bootup

[Ubaid_M]

Hi,

I am using a BL653, on which I have the following peripherals:

1. SPI
2. I2C
3. UART
4. ADC
5. PWM
6. BLE controller

Upon bootup I want mcuboot to diagnose these 6 peripherals, sort of a health check up.

Can you kindly suggest how & where in mcuboot source code I can make changes..?

Thanks,

[Edvin]

Hello,

I would be careful to add much functionality to the bootloader. Why do you need to check all these things in the bootloader, and not the application? And what do you plan to do if one of the above checks fail?

Best regards,

Edvin

[Ubaid_M]

Hello Edvin,

Edvin said:

And what do you plan to do if one of the above checks fail?

I want bootup diagnostics as these peripherals are critical for my application & device.

Edvin said:

I would be careful to add much functionality to the bootloader.

Would you please suggest your concerns with having diagnostics in bootloader rather than application..?

Thanks,

[Edvin]

You typically don't want to introduce possible bugs to the bootloader, because if the device fails, then it is bricked. Also, it introduces several images (applications) that you need to maintain when you update the SDK version, instead of keeping only one application, and use the default/standard bootloader.

But, in theory, you can do whatever you like from the bootloader. 

You can make changes (at your own risk) in the bootloader's main.c file, which is located in:

v1.9.1\bootloader\mcuboot\boot\zephyr\main.c

Best regards,

Edvin