TouchDrvCST3530.hpp

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#pragma once
 
#include "../SensorBuildOpt.h"
#if !SENSORLIB_EXCLUDE_TOUCH_CST3530
 
#include "TouchDrvInterface.hpp"
 
// The device address is not fixed and is determined by the manufacturer.
static constexpr uint8_t   CS3530_SLAVE_ADDRESS = (0x1A);
 
 
class TouchDrvCST3530 : public TouchDrvInterface
{
public:
    using TouchDrvInterface::getPoint;
    TouchDrvCST3530() = default;
 
    ~TouchDrvCST3530() = default;
 
    void sleep() override;
 
    void wakeup() override;
 
    const TouchPoints &getTouchPoints() override;
 
    const char *getModelName() override;
 
private:
 
    bool initImpl(uint8_t) override;
 
    void beforeBegin() override
    {
        _pinsCfg.rstHoldTimeMs = 30;
        _pinsCfg.rstReleaseTimeMs = 50;
    }
 
    bool writeCommand(uint32_t cmd, uint8_t *read_buffer = nullptr, size_t read_size = 0)
    {
        uint8_t write_buffer[4];
        write_buffer[0] = (cmd >> 24) & 0xFF;
        write_buffer[1] = (cmd >> 16) & 0xFF;
        write_buffer[2] = (cmd >> 8) & 0xFF;
        write_buffer[3] = (cmd >> 0) & 0xFF;
        if (read_buffer) {
            return 0 == writeThenRead(write_buffer, arraySize(write_buffer), read_buffer, read_size);
        } else {
            return 0 == writeBuff(write_buffer, arraySize(write_buffer));
        }
    }
 
    uint16_t check_sum_16(int val, uint8_t* buf, uint16_t len);
 
protected:
    static constexpr uint32_t  READ_COMMAND                = (0xD0070000);
    static constexpr uint32_t  INFO_COMMAND                = (0xD0030000);
    static constexpr uint32_t  SLEEP_COMMAND               = (0xD00022AB);
    static constexpr uint32_t  CLEAR_COMMAND               = (0xD00002AB);
    static constexpr uint8_t   MAX_FINGER_NUM              = (5);
    static constexpr uint8_t   MAX_READ_BYTES              = (32);
};
 
#endif