is BOOT pin needed for IAP of new firmware

rtursen · ‎2016-06-16

Posted on June 17, 2016 at 08:04

Hello,

I am designing a board with a STM32F0308.

STM32F0308 will be connected to a linux based SOC via UART connection. When a software update is required, I plan to send the new firmware for STM32F0308 via uart and then store it in external nand/nor flash.

After the firmware is acquired, I want to update STM32F0308 internal flash and then start with the new bootloader.

My question is, during this process, can you please confirm that I don't need to use BOOT pin?

thanks

rifo

#iap

Tesla DeLorean · ‎2016-06-17

Posted on June 17, 2016 at 15:32

IAP - In Application Programming

IAP is where you have your own boot-loader on the STM32 which you control.

If you expect to program BLANK devices using the System Loader (ROM), then you'll want to have control of the BOOT and RESET pins.

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rtursen · ‎2016-06-18

Posted on June 19, 2016 at 08:16

Hello Clive,

Then I understand that I don't need the boot and reset pins

since I won't be programming blank devices.

Thanks a lot for your answer.

rifo