About MDrac.1

MDrac.1 · 2021-10-26

Hi,I'm trying to see what the maximal frequency I can achieve using the STM32F407-discovery board.So far I have found the following:using TIM1 Internal clock (168MHz)Output pin PE9If i put the period at 1000, I get the following result:However if I p...

MDrac.1 · 2021-06-08

Hi,I'm trying to control multiple PWM signals simultanously using DMA (used for controlling LED drivers). However I'm having an issue I can't seem to trace, one of the lines puts out an additional PWM signal cycle that shouldn't be there, this is wei...

MDrac.1 · 2021-05-14

So I'm trying to control 8 different PWM signals simultaneously using DMA (Nucleo-F429ZI connected with 8 lines of SK6812 LEDs).So save memory space I implemented the strategy described in this blog to save memory. Basically using half-transfer and f...

MDrac.1 · 2021-03-25

So I'm having this weird bug I can't seem to figure out.I'm trying to connect two stm32f4 discovery boards through SPI.The master is sending out a SS signal I want to use to synchronize with the slave.However for some reason before I send out a messa...

MDrac.1 · 2021-02-19

Okay so I'm trying to use FSMC in order to control 16 bitlines and a (custom) clocksignal for driving multiple LED drivers. (the final goal see "data-signal")My first goal was to be able to drive the 16 bitlines, this works as expected. (see "without...

MDrac.1 · 2021-10-27

That was it, thank you!Really didn't even think about checking the sampling rate of the logic analyzer. 

MDrac.1 · 2021-06-08

Well, it's this concept but applied to a slightly different LED driver so the timings are different. Normally as the output for each sequential LED driver is put out the LedCounter increases and eventually it puts the PWM signal to zero thereby 'stop...

MDrac.1 · 2021-05-04

Worked for me: Switching to OpenOCD, then switching back to ST-LINK GDB server

MDrac.1 · 2021-03-25

I forgot to connect the ground pin.

MDrac.1 · 2021-03-08

A bit late, but I had the same problem and the following worked for me:1) Right click on your project -> "Properties"2) Go to Run/Debug Settings3) Delete the old Launch configuration4) Create a new one (Don't forget to choose your C/C++ application)5...

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High-frequency square wave using timer not possible?

DMA line output is one more cycle than expected

Controlling 8 PWM signals simultaneously with DMA

SPI Slave NSS input not consistent

Parallel signaling using fsmc

Re: High-frequency square wave using timer not possible?

Re: DMA line output is one more cycle than expected

Re: Program randomly pauses and refuses to run after (handle_vCont_t, Thread already stopped)

Re: SPI Slave NSS input not consistent

Re: I am using STM32CubeIDE v1.0.2 . when i select Debug it is giving pop error as "An internal error occurred during: "Launching New_configuration (5)". java.lang.NullPointerException" please help me to clear this .thank you.