About gary239955

gary239955 · 2015-12-16

Posted on December 16, 2015 at 10:20I've been trying to upgrade the firmware on my STM32F105 project by using DFU through USB. The problem is that I need to read ADC using DMA for both the boot code (to check whether some switches are set right to a...

gary239955 · 2022-10-20

By the way, don't forget to turn off PE while you set those bits, then turn PE on again afterwards.

gary239955 · 2022-10-20

I can confirm. No ACK until I set NOSTRETCH and ANFOFF. Then it works perfectly. I'm using ST32L072.

gary239955 · 2020-04-30

Hi Martin, I think I'm having the same problems as you. I'm using a 25MHz crystal with 390R resistor. I go into DFU mode by charging a capacitor on BOOT0, then let the watchdog reset. This works fine. Like you, I do not boot from flash. But DFUse doe...

gary239955 · 2015-12-21

Posted on December 21, 2015 at 16:52I'd like to re-open this thread. I am now able, thanks to clive1, to use DfuSe (v3.0.5) to upgrade my main application from boot code which goes into DFU mode when I power up with switches in a unique position. As...

gary239955 · 2015-12-17

Posted on December 17, 2015 at 17:54Thanks Clive, Your first suggestion seems to be holding up well. Disabling and de-initialising both ADC and DMA in the bootloader before jumping, then reinitialising from scratch in the application is working ever...

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