How to store two application images in nrf51822 flash

[Sudhan]

Hi,

How to store two application image in nrf51822 flash each image size is 60kb. I have enough space To store images but I don't know how to store. Please guide me to solve the problem.

[bjorn-spockeli]

Hi Sudhan,

I suggest that you take a look at this answer.

Best regards

Bjørn

[Roger Clark]

@awmeil

Most, (possibly all) STM32 MCU's have a built in serial bootloader, which can be accessed by pulling boot0 high and boot0 low on the STM32 and then toggling the STM32's reset pin.

The protocol of this is fairly simple, and their is open source C code to send firmware using this protocol (See STM32Flash), there is also Python code, but the C is probably easier to port.

There are also open source SWD implementations that could be ported to the nRF5x, but that would be far more work than using the Serial bootloader