/
Adafruit_FT6206.h
82 lines (67 loc) · 2.68 KB
/
Adafruit_FT6206.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*!
* @file Adafruit_FT6206.h
*/
#ifndef ADAFRUIT_FT6206_LIBRARY
#define ADAFRUIT_FT6206_LIBRARY
#include "Arduino.h"
#include <Adafruit_I2CDevice.h>
#define FT62XX_DEFAULT_ADDR 0x38 //!< I2C address
#define FT62XX_G_FT5201ID 0xA8 //!< FocalTech's panel ID
#define FT62XX_REG_NUMTOUCHES 0x02 //!< Number of touch points
#define FT62XX_NUM_X 0x33 //!< Touch X position
#define FT62XX_NUM_Y 0x34 //!< Touch Y position
#define FT62XX_REG_MODE 0x00 //!< Device mode, either WORKING or FACTORY
#define FT62XX_REG_CALIBRATE 0x02 //!< Calibrate mode
#define FT62XX_REG_WORKMODE 0x00 //!< Work mode
#define FT62XX_REG_FACTORYMODE 0x40 //!< Factory mode
#define FT62XX_REG_THRESHHOLD 0x80 //!< Threshold for touch detection
#define FT62XX_REG_POINTRATE 0x88 //!< Point rate
#define FT62XX_REG_FIRMVERS 0xA6 //!< Firmware version
#define FT62XX_REG_CHIPID 0xA3 //!< Chip selecting
#define FT62XX_REG_VENDID 0xA8 //!< FocalTech's panel ID
#define FT62XX_VENDID 0x11 //!< FocalTech's panel ID
#define FT6206_CHIPID 0x06 //!< Chip selecting
#define FT6236_CHIPID 0x36 //!< Chip selecting
#define FT6236U_CHIPID 0x64 //!< Chip selecting
#define FT6336U_CHIPID 0x64 //!< Chip selecting
// calibrated for Adafruit 2.8" ctp screen
#define FT62XX_DEFAULT_THRESHOLD 128 //!< Default threshold for touch detection
/**************************************************************************/
/*!
@brief Helper class that stores a TouchScreen Point with x, y, and z
coordinates, for easy math/comparison
*/
/**************************************************************************/
class TS_Point {
public:
TS_Point(void);
TS_Point(int16_t x, int16_t y, int16_t z);
bool operator==(TS_Point);
bool operator!=(TS_Point);
int16_t x; /*!< X coordinate */
int16_t y; /*!< Y coordinate */
int16_t z; /*!< Z coordinate (often used for pressure) */
};
/**************************************************************************/
/*!
@brief Class that stores state and functions for interacting with FT6206
capacitive touch chips
*/
/**************************************************************************/
class Adafruit_FT6206 {
public:
Adafruit_FT6206(void);
bool begin(uint8_t thresh = FT62XX_DEFAULT_THRESHOLD,
TwoWire *theWire = &Wire, uint8_t i2c_addr = FT62XX_DEFAULT_ADDR);
uint8_t touched(void);
TS_Point getPoint(uint8_t n = 0);
// void autoCalibrate(void);
private:
Adafruit_I2CDevice *i2c_dev = NULL; ///< Pointer to I2C bus interface
void writeRegister8(uint8_t reg, uint8_t val);
uint8_t readRegister8(uint8_t reg);
void readData(void);
uint8_t touches;
uint16_t touchX[2], touchY[2], touchID[2];
};
#endif // ADAFRUIT_FT6206_LIBRARY