About TDJ

TDJ · 2025-01-03

Trying to to set up RTC alarm for STM32U5G9 I come across this CubeMX issues:There is no option to disable Calendar date and time setup. Needless to say, probably it does not make any sense to set up date and time on every board reset if it has (as i...

TDJ · 2025-01-03

Today, for the first time I tried to set up RTC alarm using STM32U5G9 MCU. I need RTC alarm (IRQ) to fire on every second change, that is, when subsecond counter is zero - it is configured to count 32kHz clock pulses from 32k to 0 using 15-bit subsec...

TDJ · 2024-12-05

Hi All,I am looking for any simple working example on how to, let's say, draw a circle or rectangle on the screen using the new GPU2D aka NeoChrom aka 2.5D aka NEMA GFX.Does such example for STM32U5G9 already exist? I know that it has to use compiled...

TDJ · 2024-09-06

Hi All,Not so long ago ST has selected Microsoft ThreadX as one of its its strategic technologies.In my opinion it is a very good RTOS. The problem is that it was supported by Microsoft only, no other community project integrates with it, e.g. mcuboo...

TDJ · 2024-08-26

Hi, I try to use IIS3DHHC as a simple inclinometer. I learnt that to get stable readings it may be a good idea to process raw data using Extended Kalman Filter (EKF). Some ST demonstrations available on YT mention that as well, but I found no source ...

TDJ · 2025-01-10

@Sarra.S Maybe this picture below will better illustrate the problem.

TDJ · 2025-01-06

Hello @Sarra.S I tried to explain why the approach you suggested is not doable if an RTC alarm is also configured. Simply, there is no way to place code in the 'user code' section that will conditionally or unconditionally skip the date/time config a...

TDJ · 2025-01-03

@TDK I am showing that such config would cause a match on the 1st second of every minute (not on every second), effectively triggering alarm every minute e.g. at 12:00:01, 12:01:01, 12:02:01 and so on.But you got me thinking again. What I was missing...

TDJ · 2025-01-03

Of course, the above question was rhetorical, and merely intended to demonstrate how inconsistent, at best, the official ST's “narrative” is.

TDJ · 2024-12-23

@GaetanGodart Thanks, I think now I got that.It is not NEMA GFX registers, interrupts and data structures that are so complex that docs should not be just shared because they could not/would not be shared anyway.It is about NEMA GFX library complexit...

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CubeMX RTC config issues

How to fire RTC alarm every 1s?

STM32U5G9 GPU2D aka NeoChrom aka 2.5D aka NEMA_GFX simple example wanted

ThreadX status and future

IIS3DHHC sensor and (Extended) Kalman Filter (EKF)

Re: CubeMX RTC config issues

Re: CubeMX RTC config issues

Re: How to fire RTC alarm every 1s?

Re: STM32U5G9 GPU2D aka NeoChrom aka 2.5D aka NEMA_GFX simple example wanted

Re: STM32U5G9 GPU2D aka NeoChrom aka 2.5D aka NEMA_GFX simple example wanted