라즈베리파이 VR 코드

라즈베리파이 VR 코드 1

ADS SPEED SPI CS

#include <stdio.h>
#include <wiringPi.h>
#include <wiringPiSPI.h>

#define CS_ADC		7
#define SPI_CHANNEL	0
#define SPI_SPEED	1000000

int adcRead(char adcChannel)
{
	char buff[3];
	int adcValue = 0;

	buff[0] = 0x06 | ((adcChannel & 0x07)>>2);
	buff[1] = ((adcChannel &0x07) <<6);
	buff[2] = 0x00;

	digitalWrite(CS_ADC, LOW);

	wiringPiSPIDataRW(SPI_CHANNEL, buff, 3);

	buff[1] = 0x0F & buff[1];
	adcValue = (buff[1] <<8|buff[2]);
	digitalWrite(CS_ADC,HIGH);

	return adcValue;
}

int main(void)
{
	int adcValue_VR = 0;
	wiringPiSetupGpio();

	if(wiringPiSPISetup(SPI_CHANNEL, SPI_SPEED) <0)
	{
		return -1;
	}
	pinMode(CS_ADC, OUTPUT);
	while(1)
	{
		adcValue_VR = adcRead(1);
		printf("VR = %u\n", adcValue_VR);
		delay(1000);
	}
	return 0;
}

 

라즈베리파이 VR 코드 2

#include <stdio.h>
#include <wiringPi.h>
#include <wiringPiSPI.h>
#include <softTone.h>

#define CS_ADC		7
#define SPI_CHANNEL	0
#define SPI_SPEED	1000000

const int pinPiezo = 13;

int adcRead(char adcChannel)
{
	char buff[3];
	int adcValue = 0;

	buff[0] = 0x06 | ((adcChannel & 0x07)>>2);
	buff[1] = ((adcChannel &0x07) <<6);
	buff[2] = 0x00;

	digitalWrite(CS_ADC, LOW);

	wiringPiSPIDataRW(SPI_CHANNEL, buff, 3);

	buff[1] = 0x0F & buff[1];
	adcValue = (buff[1] <<8|buff[2]);
	digitalWrite(CS_ADC,HIGH);

	return adcValue;
}

int main(void)
{
	int adcValue_VR = 0;
	wiringPiSetupGpio();

	if(wiringPiSPISetup(SPI_CHANNEL, SPI_SPEED) <0)
	{
		return -1;
	}
	pinMode(CS_ADC, OUTPUT);
	softToneCreate(pinPiezo);
	while(1)
	{
		adcValue_VR = adcRead(1);
		printf("VR = %u\n", adcValue_VR);
		softToneWrite(pinPiezo, adcValue_VR);
		delay(1000);
	}
	return 0;
}