usb.c

Example codes for ADuC842 CPU family

//#include <ADuC842.h>
#include <stdio.h>
#include <rs_usb.h>

sbit TEM = P2^0;
sbit ADXL_Y = P1^4;


signed long int i=0;
signed int s_data=-1;
unsigned char c=0;
unsigned int data_adc=0x3000;
unsigned char volume=1;
unsigned int DAC_Data=0;


void delay(unsigned long int length) { while(length--) s_data = ReadByte(); }


void adc_int() interrupt 6 {
	DAC0 = ((ADCDATA&0x0FFF)-volume);
//	DAC0 = ~DAC0;
/*	SendByte(SEC);
	SendByte(MIN);

	if (ADCDATA>(data_adc+100)) data_adc = data_adc+100; else
	if (ADCDATA<(data_adc-100)) data_adc = data_adc-100; else
	if (ADCDATA>data_adc) data_adc++; else
	if (ADCDATA<data_adc) data_adc--;

	SendByte(data_adc>>8);
	SendByte(data_adc&0xFF);

	SendByte(i<<24);
	SendByte((i<<16)&0xFF);
	SendByte((i<<8)&0xFF);
	SendByte(i&0xFF);

	SendByte(P0);
	SendByte(P1);
	SendByte(P2);
	SendByte(P3);
	delay(0x00FF);
	LED = !LED;*/
	return;
}


void main (void)
{	
	TxD_USB = 1;	// Wysoki stan na linii nadawczej
	DSR_USB = 0;	// Niski stan na linii gotowo渃i odbioru
	PLLCON = 0x01;	//PLL Clock config
	P1 = 0x7F;		// Port P1.7 jako Digital Input;

	DelayUs(0x01);

	ADCCON1 = 0x8C;
	ADCCON2 = 0x0B;
	ADCCON3 = 0x25;
	ADCCON2 = 0x0C;
	ADCCON3 = 0x27;

	ADCCON1 = B10100000;// power up ADC /8 + 4 acq clock
	ADCCON2 = B00100011;// select channel to convert

	DACCON = B01111111;
//	EA = 1;				// enable interrupts
//	EADC = 1;			// enable ADC interrupt
//	CCONV = 1;			// begin continuous conversions


	while (1) {
		while(!ADCI); 
//		DAC_Data = ADCDATA&0x0FFF;
		DAC0 = (ADCDATA&0x0FFF)/volume;
//		if (DAC_Data>0)	DAC0 = (DAC_Data>>volume)+0x0800;
//		if (DAC_Data<0) DAC0 = (-((-DAC_Data)>>volume))+0x0800;
		if (!INT0) volume=3;
		if (!INT1) volume=2;

	}

}