Using NRF52840 To Serial Flash a STM Chip

[Lewy2552]

Hello!

I have a complex issue that I am trying to brainstorm. The task is that I am trying to receive a file over the air and be able to serial flash my STM32U575xx.

The two questions I have to start with (Will be more, but I am trying to gather what to start with):

1. How can I receive a file over the air and store it in memory? I have the process to flash the nrf ota, but did not know if the process to store it would follow what the dev academy shows.

2. How can I interface with this so that I can send it over my rx and tx pins for the flash process?

[runsiv]

Hi

1. I would check out the OtA documentation and use the SMP server sample  to download the image and transport it to next device. I would suggest checking out Sigurds reply here. How do you plan to get the image from the air? 

2. On the STM side i can't really say to much as I'm not familiar with it. But if you are using Zephyr I would use the smp_cliemt sample and send the data over uart

Regards

Runar