UMX FLIP Installation Guide download pdf (Page 55)

Figure 29 shows the sample code that initializes and configures UMX.

void RadioConfig()

{

SoraURadioStart(TARGET_RADIO);

SoraURadioSetRxPA (TARGET_RADIO, SORA_RADIO_DEFAULT_RX_PA);

SoraURadioSetRxGain (TARGET_RADIO, SORA_RADIO_DEFAULT_RX_GAIN);

SoraURadioSetTxGain (TARGET_RADIO, SORA_RADIO_DEFAULT_TX_GAIN);

SoraURadioSetCentralFreq (TARGET_RADIO, 2422 * 1000);//central frequency: 2422MHz

SoraURadioSetFreqOffset (TARGET_RADIO, -5 * 1000 * 1000); //frequency offset: -5MHz

SoraURadioSetSampleRate (TARGET_RADIO, 40); //sample rate: 40MHz

}

int __cdecl main(int argc, char *argv[])

{

BOOLEAN isTx = FALSE;

// Initialize Sora user mode extension

BOOLEAN succ = SoraUInitUserExtension("\\\\.\\HWTest");

if (!succ)

{

printf("Error: fail to find a Sora UMX capable device!\n");

return -1;

}

RadioConfig();

…

SoraUCleanUserExtension();

return 0;

}

Figure 29. Sample code to initialize and configure UMX.

7.2 Reception

To access the RX channel of a radio object, the UMX application should first call

SoraURadioMapRxSampleBuf to obtain a pointer to the receiving buffer as well as the buffer

size. Then, the UMX application can get a RX_STREAM from the receiving buffer using

SoraURadioAllocRxStream, from which it can read I/Q samples. To read a signal block, the UMX

application needs to call SoraRadioReadRxStream. Before exiting, the UMX application should

call SoraURadioReleaseRxStream to release a RX_STREAM and SoraURadioUnmapRxSampleBuf

to release the memory mapped to the RX buffer of a radio.

Figure 30 shows an example to receive I/Q samples using UMX.

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UMX FLIP Installation Guide Page 55