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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable
‎Nov 29, 2016 04:54 AM

Quadrature Decoder and DMA

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

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2 Replies
JoMe_264151
Expert II
‎Nov 29, 2016 06:19 AM

Re: Quadrature Decoder and DMA

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

   

 

   

Bob

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JeCo_264681
Contributor
‎Nov 29, 2016 10:10 AM

Re: Quadrature Decoder and DMA

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.

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