Dousbin:
USBBufferCount = USBBufferSizeRX ' RX buffer size
USBService ' keep connection alive
USBIn 1, USBBuffer, USBBufferCount, Dousbin ' read data, if available

If USBBuffer[?] = ? then
PORTA = %00000001
else
PORTA = %00000000
endif
return
I'm tried If USBBuffer > 0 then


PS
Are "KBDDESCMOJA" OK?