Search found 4 matches

by ndclarkehall
Sun Jun 27, 2021 11:00 am
Forum: Raspberry Pi microcontroller boards
Topic: Using DMA as a beginner
Replies: 7
Views: 6336

Re: Using DMA as a beginner

That's working now! Thanks :D

Is there a way to reload the DMA without rerunning the script?

The brief needs the program to run as a standalone where triggers on a GPIO pin play back wave32 from the beginning.
by ndclarkehall
Wed Jun 23, 2021 12:27 pm
Forum: Raspberry Pi microcontroller boards
Topic: Using DMA as a beginner
Replies: 7
Views: 6336

Re: Using DMA as a beginner

Been going through this for a while and am still unsure how to get it to actually send the voltages to the pins in hippy's code- it just seems to print the values.

I assume PioDac is the key but it doesn't behave like any function I've come across before.
by ndclarkehall
Sat Jun 19, 2021 12:04 pm
Forum: Raspberry Pi microcontroller boards
Topic: Using DMA as a beginner
Replies: 7
Views: 6336

Re: Using DMA as a beginner

V helpful thanks!

I'll try and get my head around it

I was aware of that post, my design is partially based off the instructable!
by ndclarkehall
Fri Jun 18, 2021 3:46 pm
Forum: Raspberry Pi microcontroller boards
Topic: Using DMA as a beginner
Replies: 7
Views: 6336

Using DMA as a beginner

Hello! Am attempting to construct a triggerable function (envelope for synthesisers) generator using a Pi Pico and Micropython. The Pico has a 7bit R2R DAC across GPIO 16-22. Have been successful using while loops and utime.sleep to play back lists of voltages but I find that there is an annoyingly ...