About Elijah Brown

Elijah Brown · 2020-11-04

I am having a problem where the IWDG seems to not reset the processor. I have setup a very simple project that enables the IWDG and then doesn't pet it - it should reset, but it doesn't. Running under the debugger or running standalone, it doesn't re...

Elijah Brown · 2017-01-31

Posted on February 01, 2017 at 02:32I have the STMicro USB library configured as a full speed CDC device. This is running on a STM32F405OG chip. Everything works as expected but (very) occasionally it gets into a state where the device NAKs every ...

Elijah Brown · 2020-11-04

You are right, the reset circuit diagram does suggest that holding that pin high would prevent a reset. Thanks for the suggestion, I believe this is the problem.

Elijah Brown · 2020-11-04

Yes, it is connected to an external reset control chip which probably keeps that pin held high - would that keep it from resetting? I didn't think a watchdog reset would actually try and pull down that pin.

Elijah Brown · 2017-02-06

Posted on February 07, 2017 at 01:37I have exactly this problem with USB receive. The HAL_Lock logic is hopelessly broken and it's littered throughout the ST libraries causing goodness knows what other race conditions. I am also interested in a so...

Elijah Brown · 2017-02-06

Posted on February 07, 2017 at 01:53The issue has to do with the HAL_LOCK logic implemented in the HAL layer of the STMicro USB CDC driver. When CDC_Receive_FS() calls USBD_CDC_ReceivePacket() to prepare the endpoint for the next transfer, it occas...

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STM32F405 IWDG doesn't reset

STM32 USB Library NAKs OUT packets from host

Re: STM32F405 IWDG doesn't reset

Re: STM32F405 IWDG doesn't reset

Re: Questions surrounding __HAL_LOCK

Re: STM32 USB Library NAKs OUT packets from host