c.zip_C++_analog discovery_analog discovery 2_firezfx_zip

#include "sample.h" int main(int carg, char **szarg){ HDWF hdwf; DwfState sts; double hzSys; int nSamples = 100000; unsigned short *rgwSamples = new unsigned short[nSamples]; int cSamples = 0, cAvailable, cLost, cCorrupt; bool fLost = false, fCorrupt = false; char szError[512] = {0}; printf("Open automatically the first available device\n"); if(!FDwfDeviceOpen(-1, &hdwf)) { FDwfGetLastErrorMsg(szError); printf("Device open failed\n\t%s", szError); return 0; } // in record mode samples after trigger are acquired only FDwfDigitalInAcquisitionModeSet(hdwf, acqmodeRecord); // sample rate = system frequency / divider, 100MHz/1000 = 100kHz FDwfDigitalInDividerSet(hdwf, 1000); // 16bit per sample format FDwfDigitalInSampleFormatSet(hdwf, 16); // number of samples after trigger FDwfDigitalInTriggerPositionSet(hdwf, nSamples); // trigger when all digital pins are low FDwfDigitalInTriggerSourceSet(hdwf, trigsrcDetectorDigitalIn); // trigger detector mask: low & hight & ( rising | falling ) FDwfDigitalInTriggerSet(hdwf, 0xFFFF, 0, 0, 0); // begin acquisition FDwfDigitalInConfigure(hdwf, false, true); printf("Starting record..."); while(cSamples < nSamples){ FDwfDigitalInStatus(hdwf, 1, &sts); if(cSamples == 0 && (sts == DwfStateConfig || sts == DwfStatePrefill || sts == DwfStateArmed)){ // acquisition not yet started. continue; } FDwfDigitalInStatusRecord(hdwf, &cAvailable, &cLost, &cCorrupt); cSamples += cLost; // samples lost due to device FIFO overflow if(cLost){ fLost = true; } // samples could be corrupted by FIFO overflow if(cCorrupt){ fCorrupt = true; } if(cAvailable==0){ continue; } if(cSamples+cAvailable > nSamples){ cAvailable = nSamples-cSamples; } // get samples FDwfDigitalInStatusData(hdwf, &rgwSamples[cSamples], 2*cAvailable); cSamples += cAvailable; } printf("done\n"); FDwfDeviceClose(hdwf); }