view examples/06-Sensors/capacitive-touch/I2C_MPR121.h @ 556:ce391098f321 prerelease tip

THIS PROJECT HAS MOVED TO https://github.com/BelaPlatform/bela

/*
 * MPR121 Bela demo
 * 
 * Andrew McPherson
 * Based on Adafruit library by Limor Fried/Ladyada
 */

#ifndef I2CTK_H_
#define I2CTK_H_

#include <I2c.h>
#include "Utilities.h"

typedef bool boolean;

#define MPR121_I2CADDR_DEFAULT 0x5A

#define MPR121_TOUCHSTATUS_L 0x00
#define MPR121_TOUCHSTATUS_H 0x01
#define MPR121_FILTDATA_0L  0x04
#define MPR121_FILTDATA_0H  0x05
#define MPR121_BASELINE_0   0x1E
#define MPR121_MHDR         0x2B
#define MPR121_NHDR         0x2C
#define MPR121_NCLR         0x2D
#define MPR121_FDLR         0x2E
#define MPR121_MHDF         0x2F
#define MPR121_NHDF         0x30
#define MPR121_NCLF         0x31
#define MPR121_FDLF         0x32
#define MPR121_NHDT         0x33
#define MPR121_NCLT         0x34
#define MPR121_FDLT         0x35

#define MPR121_TOUCHTH_0    0x41
#define MPR121_RELEASETH_0    0x42
#define MPR121_DEBOUNCE 0x5B
#define MPR121_CONFIG1 0x5C
#define MPR121_CONFIG2 0x5D
#define MPR121_CHARGECURR_0 0x5F
#define MPR121_CHARGETIME_1 0x6C
#define MPR121_ECR 0x5E
#define MPR121_AUTOCONFIG0 0x7B
#define MPR121_AUTOCONFIG1 0x7C
#define MPR121_UPLIMIT   0x7D
#define MPR121_LOWLIMIT  0x7E
#define MPR121_TARGETLIMIT  0x7F

#define MPR121_GPIODIR  0x76
#define MPR121_GPIOEN  0x77
#define MPR121_GPIOSET  0x78
#define MPR121_GPIOCLR  0x79
#define MPR121_GPIOTOGGLE  0x7A

#define MPR121_SOFTRESET 0x80

class I2C_MPR121 : public I2c
{
public:
	// Hardware I2C
	I2C_MPR121();

	boolean begin(uint8_t bus = 1, uint8_t i2caddr = MPR121_I2CADDR_DEFAULT);

	uint16_t filteredData(uint8_t t);
	uint16_t  baselineData(uint8_t t);

	uint8_t readRegister8(uint8_t reg);
	uint16_t readRegister16(uint8_t reg);
	void writeRegister(uint8_t reg, uint8_t value);
	uint16_t touched(void);
 
 	void setThresholds(uint8_t touch, uint8_t release);
	
	int readI2C() { return 0; } // Unused
	
private:
	int _i2c_address;
};


#endif /* I2CTK_H_ */