XPT2046_TS_TFT_LCD_RDL.hpp

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#include <sys/time.h> // gettimeofday
#include <cstdio> // for printf
#include <cstdint>
#include <cstdbool>
#include <ctime> // for localtime etc
#include <lgpio.h>
#include "common_data_RDL.hpp"
 
#pragma once 
 
class XPT_2046_RDL
{
 
public:
 
    XPT_2046_RDL();
    ~XPT_2046_RDL(){};
    
    // SPI functions
    rdlib::Return_Codes_e XPTSPIInit(int device, int channel, int speed, int flags, int gpioDev, uint8_t IRQPin ,int8_t resPin);
    bool XPTIRQIsPressed();
    rdlib::Return_Codes_e XPTSPIend(void);
    
    // Read functions
    int XPTReadSensor(int command);
    void XPTReadXY( int *xp, int *yp);
    
    // Calibration & debug Functions 
    void XPTInitValues();
    void XPTPrintValues();
    void XPTSetPoint(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2,uint16_t id);
    int XPTGetPoint();
    struct Touch_Point_t
    {
        uint32_t x1; 
        uint32_t x2; 
        uint32_t y1; 
        uint32_t y2; 
        uint32_t id; 
    };
 
    static constexpr auto MaxTouchPoints = 20; 
    static constexpr uint8_t MAX_LEN_BUFFER = 3; 
    static constexpr uint32_t DTMAX = 800000; 
private:
    // Control Register
    static constexpr uint8_t XPT_START = 0x80; 
    static constexpr uint8_t XPT_XPOS  = 0x50; 
    static constexpr uint8_t XPT_YPOS  = 0x10; 
    static constexpr uint8_t XPT_8BIT  = 0x08; 
    static constexpr uint8_t XPT_SER   = 0x04; 
    static constexpr uint8_t XPT_DEF   = 0x03; 
    uint16_t tpc; 
    uint16_t tpx; 
    time_t lsec; 
    suseconds_t lusec; 
    Touch_Point_t tps[MaxTouchPoints]; 
    bool _calibration; 
    int16_t _min_xp; 
    int16_t _min_yp; 
    int16_t _max_xp; 
    int16_t _max_yp; 
    int16_t _min_xc; 
    int16_t _min_yc; 
    int16_t _max_xc; 
    int16_t _max_yc; 
    // SPI related 
    int _spiDev = 0;       
    int _spiChan = 1;      
    int _spiBaud = 50000;  
    int _spiFlags = 0;     
    int _spiHandle = 0;    
    // GPIO
    int _DeviceNumGpioChip = 0;  
    int _GpioHandle = 0;         
    uint8_t _RESET_PIN = 0;      
    uint8_t _IRQ_PIN = 0;        
    bool _resetXPTPinOn = false; 
};