python riffa reusable integration framework for fpga PythonRiffa可重复使用集成框架.pdf

|RIFFA:AReusableIntegrationFrameworkForFPGAA...

PythonAPI

ThesoftwareinterfaceisprovidedbybindingsforC/C++,Python,MatlabandJava.Afterinstallationallbindingsareavailableintheirrespectiveruntime

environments.TheAPIisbasedonthenotionofchannels.RIFFA2canbeconfiguredtosupportbetween1-12tchannels.Eachchannelconnects

toanIPcoreandcanbeaddressedbyspecifyingthechannelnumberfromtheuserapplication.Thechannelsaretandthreadsafe.Atmostone

threadshouldbeusedtoaccessasinglechannel.

ThePythonbindingsareusedbyimportingthe

riffa

module.YouwillneedPython2.7orgreater.BelowareacoupleofcompleteexamplesandanAPI

listing.

1.importriffa

2.importarray

3.

4.fid0

5.channel0

6.

7.dataarray.array(I,range(100))

8.fdriffa.fpga_open(fid)

9.riffa.fpga_send(fd,channel,data,100,0,True,0)

10.riffa.fpga_recv(fd,channel,data,0)

11.riffa.fpga_close(fd)

ThiamplefirstopensupFPGAwithid0.Itthensends400bytesofdata(1004-bytewords)tochannel0with0destinationoffset,0timeout,andmarks

thetransferaslast.TheIPcoreonchannel0isdesignedtosendbacksomedata.Sothenextcallistoreceivedatafromthesamechannel,upto400bytes

(