list.4.txt

This archive contains circuit diagram and text documents making up the design of audio spectrum anal

	cplx Samples[N];
	cplx FFTResult[N];
	fix Spectrum[N];
	WindowType WinType=wtNone;

	//Peripherials' frequency = fclk = 60MHz
	VPBDIV&=0xFFFFFFFC;
	VPBDIV|=0x01;

	//Port direction configuration
	IODIR0 = 0xFF000000; 
	IODIR1 = 0x00FF0000;

	//ADC0 configuration
	PINSEL1 |= (1<<24);			// P0.28 = AD0.1
	AD0CR = 0x002E0402;		// AC: 10 bit AD0.1 @ 3MHz	

	//Init devices
	InitSerial();
	LCDInit();
	InitFFT();
	InitSamplingModule();

	LCDClear();
	LCDText("Disconnect input");
	LCDTextXY(0,1,"Calibrating....");
	delay(0x600000);

	//First dummy conversion (big error)
	GetInitialVoltage();

	//The right conversion
	if(GetInitialVoltage()==0)
	{
		LCDClear();
		LCDText("Calibration Err");
		LCDTextXY(0,1,"Try again-RESET");
		while(1);
	}

	LCDClear();
	LCDText("Calibration OK");
	delay(0x400000);
	DisplayWindowType(WinType);