/////////////////////////////////////
//  Generated Initialization File  //
/////////////////////////////////////

#include <stdio.h>
#include "C8051F060.h"

#define EXTDATA P0_3
#define INVDATA P0_4
#define LED P0_5
#define PKDRESET P1_2

unsigned char dly_cycles=225;
unsigned long sysclk=24000000;

unsigned int  samplingfreq=500, x;
volatile unsigned int  adc0data,adc1data;			// ADC0 and ADC1 data
volatile unsigned int  peak;
volatile unsigned int  copiedpeak, lastpeak;
volatile unsigned char  copypeak, sampling; // set to 1 to copy the volatile paek value

unsigned char s, end, inter,  TX0, RX0, ss;


// Peripheral specific initialization functions,
// Called from the Init_Device() function
void Reset_Sources_Init()
{
    WDTCN     = 0xDE;
    WDTCN     = 0xAD;
}

void Timer_Init()
{
    SFRPAGE   = TIMER01_PAGE;
    TCON      = 0x45;		// INT0 & INT1 are edge triggered
    TMOD      = 0x21;
    CKCON     = 0x18;
    TH1       = 0xF3; 		// F3:115200 baud, FF:1,5M, SYSCLK=24 MHz
    SFRPAGE   = TMR2_PAGE;
    TMR2CN    = 0x04;
    RCAP2L    = 0xEC;
    RCAP2H    = 0xFF;		// 0xFF9C 20000Hz sampling rate, 50us, 0xFFEC 66kHz 10us,  /FFFF-FFEC=19 , 1/2000000 *19=10us

/*	SFRPAGE   = TMR3_PAGE;//trigger
    TMR3CN    = 0x04;
    TMR3L     = 0x30;
    TMR3H     = 0xF8;*/


}

void UART_Init()
{
   	SFRPAGE   = UART0_PAGE;
    SCON0     = 0x50;
    SSTA0     = 0x10;
	TI0=1;
	RI0=0;


}

void ADC_Init(void)
{
	SFRPAGE   = ADC0_PAGE;
    ADC0CF    = 0x10;
	ADC0CN    = 0x8C;	// timer2
	AD0INT=0;
    SFRPAGE   = ADC1_PAGE;
    ADC1CF    = 0x10;
	ADC1CN    = 0x8C;	// timer2
}

void DAC_Init()
{
    SFRPAGE   = DAC0_PAGE;
    DAC0CN    = 0x84;
    SFRPAGE   = DAC1_PAGE;
    DAC1CN    = 0x84;
}

void Voltage_Reference_Init()
{
    SFRPAGE   = ADC0_PAGE;
    REF0CN    = 0x02;	// 0x03 for internal, 0x02 for external reference
    SFRPAGE   = ADC1_PAGE;
    REF1CN    = 0x02;	// 0x03 for internal, 0x02 for external reference
    SFRPAGE   = ADC2_PAGE;
    REF2CN    = 0x02;
}

void Port_IO_Init()
{
    // P0.0  -  TX0 (UART0), Push-Pull,  Digital
    // P0.1  -  RX0 (UART0), Open-Drain, Digital
    // P0.2  -  INT0 (Tmr0), Open-Drain, Digital
    // P0.3  -  Unassigned,  Open-Drain, Digital
    // P0.4  -  Unassigned,  Push-Pull,  Digital
    // P0.5  -  Unassigned,  Open-Drain, Digital
    // P0.6  -  Unassigned,  Open-Drain, Digital
    // P0.7  -  Unassigned,  Open-Drain, Digital

    // P1.0  -  Unassigned,  Open-Drain, Digital
    // P1.1  -  Unassigned,  Open-Drain, Digital
    // P1.2  -  Unassigned,  Push-Pull,  Digital
    // P1.3  -  Unassigned,  Open-Drain, Digital
    // P1.4  -  Unassigned,  Open-Drain, Digital
    // P1.5  -  Unassigned,  Open-Drain, Digital
    // P1.6  -  Unassigned,  Open-Drain, Digital
    // P1.7  -  Unassigned,  Open-Drain, Digital

    // P2.0  -  Unassigned,  Open-Drain, Digital
    // P2.1  -  Unassigned,  Open-Drain, Digital
    // P2.2  -  Unassigned,  Open-Drain, Digital
    // P2.3  -  Unassigned,  Open-Drain, Digital
    // P2.4  -  Unassigned,  Open-Drain, Digital
    // P2.5  -  Unassigned,  Open-Drain, Digital
    // P2.6  -  Unassigned,  Open-Drain, Digital
    // P2.7  -  Unassigned,  Open-Drain, Digital

    // P3.0  -  Unassigned,  Open-Drain, Digital
    // P3.1  -  Unassigned,  Open-Drain, Digital
    // P3.2  -  Unassigned,  Open-Drain, Digital
    // P3.3  -  Unassigned,  Open-Drain, Digital
    // P3.4  -  Unassigned,  Open-Drain, Digital
    // P3.5  -  Unassigned,  Open-Drain, Digital
    // P3.6  -  Unassigned,  Open-Drain, Digital
    // P3.7  -  Unassigned,  Open-Drain, Digital

    SFRPAGE   = CONFIG_PAGE;
    P0MDOUT   = 0x11;
    P1MDOUT   = 0x04;
    XBR0      = 0x04;
    XBR1      = 0x14;// /INT0  /INT1
    XBR2      = 0x40;
}

void Oscillator_Init()
{
    int i = 0;
    SFRPAGE   = CONFIG_PAGE;
    OSCXCN    = 0x67;
    for (i = 0; i < 3000; i++);  // Wait 1ms for initialization
    while ((OSCXCN & 0x80) == 0);
    CLKSEL    = 0x01;
}

void Interrupts_Init()
{
    //IE        = 0x05;// /INT0  /INT1
	IE        = 0x90;//   all UART0
//	IE        = 0x04;//   /INT1
//  EIE1      = 0x80;
//	EIE2      = 0x01;//timer3 out trigger
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
    Reset_Sources_Init();
    Timer_Init();
    UART_Init();
    ADC_Init();
    DAC_Init();
    Voltage_Reference_Init();
    Port_IO_Init();
    Oscillator_Init();
    Interrupts_Init();
}

void putchar_PC(unsigned char c)
{	
	SFRPAGE = UART0_PAGE;  
    SBUF0=c;
	while(!TX0);
	TX0=0;	
}

void putchar( char c)
{	
	SFRPAGE = UART0_PAGE;  
    SBUF0=c;
	while(!TX0);
	TX0=0;	
}



char getchar_PC(void)
{
	SFRPAGE = UART0_PAGE; 
    while  (!RX0) {}
    RX0=0;	
    return SBUF0;		
}



void UART0_ISR (void) interrupt 4 //PC
{
	if (RI0) 
	{
		//SFRPAGE = UART0_PAGE; 
		RI0 = 0;
		RX0 = 1;
		
		s = SBUF0;
		if (s == 'x') sampling = 0;
		
	}

	if (TI0) 
	{
		TI0 = 0;
		TX0 = 1;
	}

}





void Delay_ms(short ms)
{
	short i;
	for(i=0; i<24*ms; i++)
	{
		{ /* about 1ms, 11059200/12 Hz */
			_asm
				push b
				mov b,_dly_cycles
			00001$:
				djnz b,00001$
				mov b,_dly_cycles
			00002$:
				djnz b,00002$
				pop b
			_endasm;
		}
	}
}

void ADC0_irqhandler (void) interrupt 13
{
	AD0INT = 0;
	AD1INT = 0;
	SFRPAGE   = ADC1_PAGE;
	adc1data=(ADC1H << 8) | ADC1L;
	if (peak<adc1data)
	{
		peak=adc1data;
	}
	
	if (copypeak)
	{
		copypeak=0;
		copiedpeak=peak;
	}

}


void INT1_irqhandler (void) interrupt 2
{
	peak=0;
	copiedpeak = 0;
	copypeak=1;
	ss=6;
	
}


//void SetDAC(unsigned int value)
//{
//	SFRPAGE=DAC0_PAGE;
//	DAC0L=value;
//	DAC0H=value >> 8;
//}

void ContSampling(void)
{
	unsigned char rec_chr;
	unsigned int x;
//	Delay_ms(500);

	rec_chr=0;
	SFRPAGE   = TMR2_PAGE;
	TMR2CN    = 0x00;
	SFRPAGE   = ADC0_PAGE;
	AD0INT=0;
	SFRPAGE   = ADC1_PAGE;
	AD1INT=0;
	SFRPAGE=CONFIG_PAGE;
	LED=0;

	//EA=1;//all
	//IE        = 0x94;//   /INT1
	EX1 = 1;
	EIE1      = 0x80;

	SFRPAGE   = TMR2_PAGE;
	TMR2CN    = 0x04;

	SFRPAGE   = PCA0_PAGE;
    PCA0CN    = 0x40;
    PCA0MD    = 0x08;

	ss=0;
	sampling=1;
	copypeak=0;
	while (sampling == 1)
	{
		while(!ss);
		ss=0;
	
		while (copypeak){}
		copypeak=1;
		while (copypeak){}
			
		x=(5000L*copiedpeak)/65536L;
			
			putchar_PC('#');
			putchar_PC('m');
			putchar_PC(x);
			putchar_PC(x >> 8);
	}
	
	SFRPAGE=CONFIG_PAGE;
	LED=1;
	EX1 = 0;

}




void main()
{
	unsigned char e, f;
	Init_Device();
	TX0 = 0;
	RX0=0;
	PKDRESET = 0;
	fin=0;
	
	while(1)
	{	
		peak=0;
		lastpeak=0;
		copiedpeak = 0;
		//SetDAC(0);
		//LED=1;
		//Delay_ms(100);

		e=getchar_PC();
		if (e=='#')
		{
			putchar_PC(e);
			f=getchar_PC();

			if (f=='S')
			{
				putchar_PC(f);
				ContSampling();

			}

		}

	}

}