About Coopdis

Coopdis · 2024-08-15

Hello,I am using a bog standard, new, out of the box Nucleo-wba52cg.For some reason I can't get PA8 aka GPIO_23 to pull lower than about 1.6V?I discovered this when running the TIM_OCToggle example program. TIM_OCToggle uses TIM2 to toggle pins on e...

Coopdis · 2024-07-29

Hi,It's been a long time since I last programmed an STM32. I've been put on a project that uses the STM32WBA55CGU7, so I've gotten a STM32WBA55G-DK1 development board.I've loaded up the example program "GPIO_InfiniteLedToggling_Init". I had hoped t...

Coopdis · 2024-08-15

Ah, okay! That did it.I guess it seems the Nucleo board is doing something on GPIO_23 that is not documented in the schematic?It seems that I maybe could have also removed SB5 to disconnect VCP1_RX from GPIO_23. Digging further, it is clear that th...

Coopdis · 2024-08-15

Huh... remove SB21?Perhaps I am looking at the wrong document? I have been referencing this document...https://www.st.com/resource/en/schematic_pack/mb1863-wba52cga-a03-schematic.pdfOn the 3rd page is the following diagram...I'm still pretty new to ...

Coopdis · 2024-08-15

Yes! I see that in the schematic.That said, a search for "VCP" in the reference manual turns up "0" hits.It seem to have something to do with a UART... which I am not using in anyway... except perhaps as a debug interface? But if it PA8 was being u...

Coopdis · 2024-07-29

Huh. Okay got it.It seems that by default LD3 is connected to GPIO_0, but on the STM32WBA55CG-U6/7 there is no physical pin available on the SoC that is labelled GPIO_0!!!!!So, for the STM32WBA55CG-DK1, LD3 is powered by PB15/GPIO_15. The example i...

Coopdis · 2024-07-29

PS. I have confirmed that the VIN is not supposed to show 5v when the STM32WBA55CG-DK1 is powered via 5V_STLK

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NUCLEO-WBA52CG - PA8/GPIO_23 Doesn't pull lower than 1.6v?

Newbie Trying to Blink w/ STM32WBA55G-DK1

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Re: NUCLEO-WBA52CG - PA8/GPIO_23 Doesn't pull lower than 1.6v?

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Re: Newbie Trying to Blink w/ STM32WBA55G-DK1