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#pragma once
#include <nrfx_twi.h>
namespace Pinetime {
namespace Drivers {
class Cst816S {
public :
struct TouchInfos {
uint16_t x;
uint16_t y;
uint8_t action;
uint8_t finger;
uint8_t pressure;
uint8_t area;
bool isTouch = false;
};
void Init();
void Probe();
TouchInfos GetTouchInfo();
void Sleep();
void Wakeup();
private:
static constexpr uint8_t pinIrq = 28;
static constexpr uint8_t pinReset = 10;
static constexpr uint8_t address = 0x15;
static constexpr uint8_t lastTouchId = 0x0f;
static constexpr uint8_t touchPointNumIndex = 2;
static constexpr uint8_t touchMiscIndex = 8;
static constexpr uint8_t touchXYIndex = 7;
static constexpr uint8_t touchEventIndex = 3;
static constexpr uint8_t touchXHighIndex = 3;
static constexpr uint8_t touchXLowIndex = 4;
static constexpr uint8_t touchYHighIndex = 5;
static constexpr uint8_t touchYLowIndex = 6;
static constexpr uint8_t touchIdIndex = 5;
static constexpr uint8_t touchStep = 6;
uint8_t touchData[63];
// TODO TWI (i²C) should be created outside and injected into this class
// It will be needed when implementing other I²C devices
// (0x15 = touch, 0x18 = accelerometer, 0x44 = HR sensor)
nrfx_twi_t twi = NRFX_TWI_INSTANCE(1); // Use instance 1, because instance 0 is already used by SPI
};
}
}
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