Hello Nordic
I am using nrf52832, skd 16.0 , s132 v7, the data with the new FW will be delivered via UART
I wish to understand some issues regarding FW update, after doing some reading
first, if there is an example for a non secure FW update (we have no security issues in our project), for the soc i am working on because i saw there are only examples for 10056 and 10059 and not for 10040 with s132 (with no security that is) ?
1. First how is it located in memory ? there is a section for the bootloader, section for the softdevice and section for the app? How can I know the address or do I actually don't need to know them ?
2. When updating FW do I need to update the softdevice separately and then the app or, maybe I don't need to update the softdevice at all when updating FW ?
3. did I understand correctly: when power up, the bootloader always runs first. Then, if there is no FW update flag, it goes to the softdevice address and then to running the app ?
4. what kind of hardware flag (I guess it's hardware, correct me if I am wrong) the bootloader checks is it a designated pin or maybe a certain register ? (if it’s a pin I am not sure how to do it because all my gpios are taken) ?
5. when bootloader needs to start (FW update flag's up), then it starts coping arriving data (in my case from uart). How can I know where it should be copied to ? and how do I copy it making sure I don't harm or attempt to write over protected flash ?
6. is there an option with the nrf52832 to work with 2 banks in case some updating did not go well ? otherwise I am running over my current app
7. does having a watchdog running in the app effect the FW update in any way ? should the bootloader with the FW update mechanism have a watchdog incase something is not working like a problem with the serial comm, and if such a problem accurse how can I make sure I keep on coping data from where I stopped, beside keeping a trek on number of bytes copied and packets ids and so ?
8. just to make sure I understand, when I want to flush a bootloader to my device I implement a bootloader project (.ses in my case working with Segger) ? if so how do I flash it to the correct location and not just like a regular app or softdevice ?
9. I read everywhere about MBR, sorry but what does MBR stands for (I could not find it in the nrf52832 data sheet) ?
10. Is there a some nrf ready to use pc app for FW updating and if so, is it an open source ?
11. do i need to reset before starting to update the FW , or can FW update accrue while app is running ?
A lot of questions I know, it's my first FW update project, hope it will not be to complicated
Best regards
Ziv
