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PSoC 4

Anonymous
Not applicable

I'm using a PSoC 4 BLE (CY8C4248LQI-BL583), and I'd like to copy the output of a Shift Register (v2.30) to RAM via DMA.  

   

The ShiftRegister does not provide a "tr_out" DMA pulse, and instead only has a level-sensitive interrupt out.  The interrupt appears to only be cleared by ShiftReg_GetIntStatus().  As such, it does not seem usable by the DMA, because the DMA event cannot clear the interrupt.

   

Can a ShiftRegister be hooked up to a DMA component?  The ShiftRegister documentation says yes, but I don't see how to throttle the requests without a pulsed interrupt.  Is there a ShiftRegister to DMA example out there?

   

 

   

Brian

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1 Solution
himam_31
Employee

We have example for PSoC5LP based. Can you have a look at the forum post:http://www.cypress.com/forum/psoc-5-device-programming/dma-shift-register.

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3 Replies
himam_31
Employee

We have example for PSoC5LP based. Can you have a look at the forum post:http://www.cypress.com/forum/psoc-5-device-programming/dma-shift-register.

View solution in original post

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BuHa_1507271
New Contributor II

The link in the "solution" above, http://www.cypress.com/forum/psoc-5-device-programming/dma-shift-register, is broken.   Until repaired, it doesn't seem solved.

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