125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
// This is the first experimental Touch component for the LILYGO EPD47 touch overlay
|
|
// NOTE: As in LVGL we cannot use blocking functions this is a variation of original library here:
|
|
// https://github.com/martinberlin/FT6X36-IDF
|
|
// More info about this epaper:
|
|
// https://github.com/martinberlin/cale-idf/wiki/Model-parallel-ED047TC1.h
|
|
#include <stdint.h>
|
|
//#include <cstdlib>
|
|
#include "driver/gpio.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/semphr.h"
|
|
#include <stdio.h>
|
|
#include "esp_log.h"
|
|
#include "driver/i2c.h"
|
|
#include "sdkconfig.h"
|
|
#include "esp_idf_version.h"
|
|
#ifndef touch_ttgo_h
|
|
#define touch_ttgo_h
|
|
// I2C Constants
|
|
#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
|
|
#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
|
|
|
|
#define ACK_CHECK_EN 0x1 /*!< I2C master will check ack from slave*/
|
|
#define ACK_CHECK_DIS 0x0 /*!< I2C master will not check ack from slave */
|
|
#define ACK_VAL 0x0 /*!< I2C ack value */
|
|
#define NACK_VAL 0x1 /*!< I2C nack value */
|
|
|
|
#define L58_ADDR 0x5A
|
|
|
|
// Note: We still could not read proper events, so we simulate Tap
|
|
enum class TEvent
|
|
{
|
|
None,
|
|
TouchStart,
|
|
TouchMove,
|
|
TouchEnd,
|
|
Tap
|
|
};
|
|
|
|
struct TPoint
|
|
{
|
|
uint16_t x;
|
|
uint16_t y;
|
|
uint8_t event;
|
|
};
|
|
|
|
class L58Touch
|
|
{
|
|
|
|
typedef struct {
|
|
uint8_t id;
|
|
uint8_t event;
|
|
uint16_t x;
|
|
uint16_t y;
|
|
} TouchData_t;
|
|
|
|
|
|
|
|
public:
|
|
// TwoWire * wire will be replaced by ESP-IDF https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/i2c.html
|
|
L58Touch(int8_t intPin);
|
|
~L58Touch();
|
|
|
|
bool begin(uint16_t width = 0, uint16_t height = 0);
|
|
void registerTouchHandler(void(*fn)(TPoint point, TEvent e));
|
|
uint8_t touched();
|
|
TPoint loop();
|
|
TPoint processTouch();
|
|
// Helper functions to make the touch display aware
|
|
void setRotation(uint8_t rotation);
|
|
void setTouchWidth(uint16_t width);
|
|
void setTouchHeight(uint16_t height);
|
|
// Pending implementation. How much x->touch y↓touch is placed (In case is smaller than display)
|
|
void setXoffset(uint16_t x_offset);
|
|
void setYoffset(uint16_t y_offset);
|
|
void sleep();
|
|
// Smart template from EPD to swap x,y:
|
|
template <typename T> static inline void
|
|
swap(T& a, T& b)
|
|
{
|
|
T t = a;
|
|
a = b;
|
|
b = t;
|
|
}
|
|
|
|
void(*_touchHandler)(TPoint point, TEvent e) = nullptr;
|
|
TouchData_t data[5];
|
|
// Tap detection is enabled by default
|
|
bool tapDetectionEnabled = true;
|
|
// Only if the time difference between press and release is minor than this milliseconds a Tap even is triggered
|
|
uint16_t tapDetectionMillisDiff = 100;
|
|
|
|
private:
|
|
TPoint scanPoint();
|
|
void writeRegister8(uint8_t reg, uint8_t val);
|
|
void writeData(uint8_t *data, int len);
|
|
void readBytes(uint8_t *data, int len);
|
|
uint8_t readRegister8(uint8_t reg, uint8_t *data_buf);
|
|
void fireEvent(TPoint point, TEvent e);
|
|
uint8_t read8(uint8_t regName);
|
|
void clearFlags();
|
|
|
|
static L58Touch * _instance;
|
|
uint8_t _intPin;
|
|
|
|
// Make touch rotation aware:
|
|
uint8_t _rotation = 0;
|
|
uint16_t _touch_width = 0;
|
|
uint16_t _touch_height = 0;
|
|
|
|
uint8_t _touches;
|
|
uint16_t _touchX[2], _touchY[2], _touchEvent[2];
|
|
TPoint _points[10];
|
|
TPoint _point;
|
|
uint8_t _pointIdx = 0;
|
|
unsigned long _touchStartTime = 0;
|
|
unsigned long _touchEndTime = 0;
|
|
uint8_t lastEvent = 3; // No event
|
|
uint16_t lastX = 0;
|
|
uint16_t lastY = 0;
|
|
bool _dragMode = false;
|
|
const uint8_t maxDeviation = 5;
|
|
};
|
|
|
|
#endif |