STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

Andrew J — Mon, 10 Aug 2020 08:46:41 GMT

Nice one. I’m following along to see how well it goes. After vacillating somewhat, I had thought about applying for the roadtest for this one as well. In the end I didn’t because it would just have been a replica of what you are doing which wouldn’t have added any value to anyone. I’m definitely interested in how well it goes, how easy to develop for and any problems/issues that may become a blocker or just too much hassle. The problems with the breakout board not fitting properly, and the Arduino headers being the wrong pitch are crazy though. I would already find it a challenge without adding unnecessary issues into the mix!

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

Jan Cumps — Sun, 09 Aug 2020 22:45:42 GMT

First interaction between LCD and electronic load:

[View:https://www.youtube.com/watch?v=H3f5N-Sa-ok:1110:699]

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

Jan Cumps — Sat, 08 Aug 2020 19:00:21 GMT

Now that I have the TouchGFX module working and a UART that I can connect to the electronic load, I'll be able to build the project I set out for this road test.

If anything doesn't work now, it'll most likely be because of my artistic skills [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-e49344ba-72c5-4ab7-9052-eba36bdc12c7/contentimage_5F00_1.png:16:16].

This is good news, because I can then spend more time investigating the peripherals. This is a decent controller with a wealth of modules.

I'd also like to find out how / where the example projects store their graphics. If I build a moderate GUI I run into memory limitations, and ST's examples have rich bitmaps.

I suspect it's in extended memory or the additional Octo-SPI flash. A nice feature to investigate ...

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

genebren — Sat, 08 Aug 2020 17:59:01 GMT

It is frustrating when things that should go together, don't. Nice fix!

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

jomoenginer — Sat, 08 Aug 2020 17:50:43 GMT

On my board, the fanout board does plugin but is quite snug up against the WiFi module and not completely inserted into the header but all pins seem to be making contact. I suppose an extender would help like 2 of the 1x10 Arduino headers.

The interesting thing is that the pic for the STM32H7B3i-DK with the Fanout board connected from the STM page shows it plugged into the finer pitch CN3 connector which the User's Guide lists as a Audio connector. I wonder how they tested that.

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

DAB — Sat, 08 Aug 2020 17:38:43 GMT

Great work around Jan.

DAB

RE: STM32H7B3I - the Development Kit STMod+ Connector and Using UART2

Jan Cumps — Sat, 08 Aug 2020 14:47:58 GMT

I removed the Grove connector:

[View:/resized-image/__size/620x542/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-e49344ba-72c5-4ab7-9052-eba36bdc12c7/0447.contentimage_5F00_192189.png:620:542]

Even though I took care, one of the unconnected solder pads lifted (you can see it if you look closely under the 4 connected pads - the pad half disappearing under the WiFI antenna is gone).

It doesn't matter, because I'll not put a Grove connector back, and the pad was only for physical force. Still I would have preferred that the pad was still there ...

I also touched the female header next to it with my heat gun. Well, only cosmetic damage.