About CMorg.1

CMorg.1 · 2023-09-02

I'm wondering if this is caused by the use of a usb type-c connector. Is there recommended wiring for how to connect a type-c to STM32 processors while retaining the ability for dfu functionality? Note that for BOOT0 R30 has been modified to be 0 ohm...

CMorg.1 · 2021-01-04

I've read a ton of app notes, the STM32H7 reference manual, posts here, and I can't figure out how to have the timer UP event trigger a DMA operation. I'm sure this is obvious to someone with more understanding and could be gleaned from other STM32 m...

CMorg.1 · 2023-09-08

I've also reviewed https://www.st.com/resource/en/application_note/an5225-usb-typec-power-delivery-using-stm32-mcus-and-mpus-stmicroelectronics.pdf and its unclear whether the STM32H723 can use the USB 2.0 approach (which I've used), or if it needs t...

CMorg.1 · 2023-09-02

And the code runs as expected on the board too, serial terminal, gpio pins etc.

CMorg.1 · 2023-09-02

Able to connect over SWD. USB is connected to DP and DM only, no connection to vbus or ID pins.Board boots normally if reset without holding the BOOT0 button but hangs at startup if booted when holding the BOOT0 button. So maybe its getting stuck in ...

CMorg.1 · 2021-01-05

@TDK no you are right, I've not been particularly clear. I was thinking that to test it I could set up the timer and write to the GPIO and look on the scope to see the expected output signal (a DMA writing say 0x0000FFFF and then 0xFFFF0000 should p...

CMorg.1 · 2021-01-04

@TDK thank you for the reference. Looking at that code it appears that the DMA hardware has the ability to have an external trigger and that's what is being used to initiate the DAC. I was hoping to use the TIM UP event to capture a value from gpio ...

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STM32H723 not entering usb dfu mode - usb type-c configuration/wiring issue?

Is there a HAL example of a memory to memory, or memory to peripheral DMA operation triggered directly by a TIMER event (not via a timer ISR) on the STM32H7?

Re: STM32H723 not entering usb dfu mode - usb type-c configuration/wiring issue?

Re: STM32H723 not entering usb dfu mode - usb type-c configuration/wiring issue?

Re: STM32H723 not entering usb dfu mode - usb type-c configuration/wiring issue?

Re: Is there a HAL example of a memory to memory, or memory to peripheral DMA operation triggered directly by a TIMER event (not via a timer ISR) on the STM32H7?

Re: Is there a HAL example of a memory to memory, or memory to peripheral DMA operation triggered directly by a TIMER event (not via a timer ISR) on the STM32H7?