About d.borodaenko

d.borodaenko · 2021-06-06

Hello gents!I'm trying to implement jump to DFU mode from the app (bootloader), without usage of BOOT0 pin. Logic should be following: if the user button is pressed during device startup (USB cable plug in) more than 3 sec, then device should go to D...

d.borodaenko · 2021-06-08

I found bootloader timing description in AN2606 but it is about minimum timing for bootloader initialization. In my case I have delay before device reset and bootloader init.

d.borodaenko · 2021-06-07

No, delay before SysetReset did not help...Still no DFU if delay between USB plug in and reset to DFU mode is more than 300 ms.

d.borodaenko · 2021-06-07

Ok, may be reasonable, will try to rearrange or add delay after DeInit. Thanks.

d.borodaenko · 2021-06-07

As you can see in code I have 3 sec delay in while loop before enter SystemReset, and DFU doesn't work with this delay. But if I reduce it to 300 ms or less, then it is initializing normally as DFU device.Run_App is not affected here at all, it perfo...

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STM32F411 DFU mode strange behavior

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