Quadrature Decoder and DMA

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Anonymous
Not applicable

Hi,

   

I would like to know if is possible to store Quadrature Decoder counter values using DMA? If yes, how? Please for an example...

   

Matej

0 Likes
2 Replies
Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

You may access the underlying QuadDec_Count8 and generate interrupts. But I am afraid you will just get some numbers in a row.

   

 

   

Bob

0 Likes
JeCo_264681
Level 5
Level 5
100 replies posted 50 replies posted 25 replies posted

I wonder why you want to "store" quadrature decoder values. Usually this data is used in real time for motion control. But if you need to store it, how long do you need to store it -- a few seconds? You could read the data from DMA to an array for processing. If you need to store it for a long time or transfer to an external device, you could use a serial interface UART, SPI, I2C to transfer to an SD card or whatever.

0 Likes