[USRP-users] USRP E100 FPGA - OMAP communication

Muez Berhane Reda m.reda at isispace.nl
Mon Sep 9 06:27:33 EDT 2013


Dear all,

I have a question on USRP E100.

The FPGA sends GPIO interrupts to Gumstix (OMAP) to notify that Data is 
available for it to read.
How does the FPGA know that the OMAP system have finished 
accessing(reading from) the GPMC CS , so that it can write to that 
memory location again. What is the signaling mechanism used to prevent 
FPGA from writing new samples while the DMA of OMAP is on the process of 
copying the old samples?

regards,

-- 
Muez Berhane Reda,

ISIS - Innovative Solutions In Space B.V.
Molengraaffsingel 12-14 | 2629 JD  DELFT | The Netherlands

T: +31(0)63 437 1234 |
E: m.reda at ISISpace.nl | www.ISISpace.nl





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