Arduino for STM32

So you didn't read carefully...
Syntax is :
-DHAL_TIM_MODULE_ONLY


Thank you, I got mixed up reading the documentation when it was right there!


Few errors here:
First, you used Stream6, channel0 , which is used for (timer1) ch1 or ch2 or ch3 but later you try to call it with "TIM_DMA_UPDATE ...

Following these guides I have tried to add a build_opt.h file with "#define HAL_TIM_MODULE_ONLY". This isn't producing any results either.

https://github.com/stm32duino/wiki/wiki/Customize-build-options-using-build_opt.h
https://github.com/stm32duino/wiki/wiki/HAL-configuration#hal-module-only ...

Hello,

I got the DMA code for the timer based blinky from this site. It's the second code under the "Bonus Timer DMA" example down at the bottom:
https://ucexperiment.wordpress.com/2021/05/01/dma-in-the-ide/

Unfortunately the code doesn't work. I'm using the STM32F401 black pill, so I used the ...

Thank you. I've got a few of these same boards on hand in case I ever feel like giving it a try. It's the simple act of soldering the pin headers on a new one that's keeping me from doing it :lol: It would greatly simplify my setup as I currently have a hydra of jumper cables from a breadboard to ...

ag123 wrote: Mon May 23, 2022 5:18 am technically it shouldn't be done, but that it still works having both of them connected as both of them are 5v

my understanding of electrical engineering is still pretty poor. what happens to the voltages in this case? does it stay at 5v where the two power sources intersect?

thank you very much!

Hello again,

I have here the schematic for the board here that I've been using, the f401"green pill". based off of this, I am unsure whether I can have the board safely plugged in via USB, while power is being supplied to the 5v pin.

the reason i ask is because the testing that I want to do ...

just 2 cents, if you are changing all the bits in one go, you may as well use ODR.
for BSRR, to do the same, it may be 2 transactions, first reset all bits, then set the bits again separately.

the alternate would be to do things like

GPIOA->BSRR = value | (~ value << 16);



perfect, thank ...

I have previously done this project using an Arduino Uno: https://create.arduino.cc/projecthub/instrumentation-system/dac-8-bit-using-r-2r-ladder-964837

The Arduino writes an arbitrary 8 bit value to PORTD, using 8 digital output pins. The command to set the register is very simple, but since ...

something like PORTA->IDR


Worked like a charm :)



Secondly, when you are working at that level, you are exposed to differences between the different STM32 processor families. As far as I know, STM32F4 processors don't have CRL/CRH registers for GPIO, but instead have other registers which ...