Re: Were to send patches & Looking for a example for ADC and DFSDM for the stm32f4


Erwan Gouriou
 

Hi Stefan,

I've not heard about DFSM support so far, but support would be welcomed indeed.

About ADC, I advise to have a look to adc drivers implemented so far /drivers/adc/.
You could rely on STM32Cube HAL to help you in implementing the driver.

For new pin configuration , you should know that pinctrl is not used from dts yet,
but you can submit  a patch and we can have a look.

Erwan


On Tue, 19 Jun 2018 at 13:57, Stefan Jaritz <stefan@...> wrote:
Hej

I still playing a bit around with Zephyr OS.

I manged so far to setup the UART1 using PA10 & PA15. This config is not
included. I can submit a patch. Who is maintaining the stm32 dts?

Now I want to go one step further. I would like to use the ADC and the
DFSDM module of the stm32f4. I was checking the sample section. I only
found the "grove_temperature" as an ADC sample. But for me it still
remains unclear how to do ADC in Zephyr OS from the scratch.


Maybe someone can explain it to me at an example:

1) ADC

My "simple" problem is to read the PC1(ADC Channel 11), PC3(ADC Channel
13) and VRefInt. I created my own board. I would like to know all the
necessary steps to finally read in my main.c a value from the ADC :D

Think to solve this I need to add some lines at

pinmux.c

myBoard.dts

myBoard_defconfig

main.c

2nd) DFSDM

The stm32f4 MCU contains a DFSDM interface. I like to use it to read
microphone data. Are there people who tried to do this in zephyr? What
were the steps? Is there a DFSDM driver?

Kind regards!

Stefan




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