xpt2046.h

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#pragma once
 
#include "esphome/core/component.h"
#include "esphome/core/automation.h"
#include "esphome/components/spi/spi.h"
#include "esphome/components/touchscreen/touchscreen.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
 
namespace esphome {
namespace xpt2046 {
 
using namespace touchscreen;
 
class XPT2046Component : public Touchscreen,
                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
                                               spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_2MHZ> {
 public:
  void set_threshold(int16_t threshold) { this->threshold_ = threshold; }
  void set_irq_pin(InternalGPIOPin *pin) { this->irq_pin_ = pin; }
 
  void setup() override;
  void dump_config() override;
  // float get_setup_priority() const override;
 
 protected:
  static int16_t best_two_avg(int16_t value1, int16_t value2, int16_t value3);
 
  int16_t read_adc_(uint8_t ctrl);
 
  void update_touches() override;
 
  int16_t threshold_;
 
  InternalGPIOPin *irq_pin_{nullptr};
};
 
}  // namespace xpt2046
}  // namespace esphome