GxEPD2-esphome/tools/gxepd2_harness/spy/SPI.h

#pragma once

// Minimal standalone SPI.h stand-in - see Arduino.h in this same directory
// for why this exists. Every byte transfer is logged with the DC pin's
// current logical level (tracked by trace.h from digitalWrite() calls),
// which is what lets the harness tell a command byte from a data byte
// without any driver-specific knowledge.

#include <cstdint>

#include "../trace.h"

class SPISettings {
 public:
  SPISettings() = default;
  SPISettings(uint32_t clock, uint8_t bit_order, uint8_t data_mode) {
    Trace::spi_settings(clock, bit_order, data_mode);
  }
};

#define MSBFIRST 0
#define SPI_MODE0 0

class SPIClass {
 public:
  void begin() {}
  void end() {}
  void beginTransaction(SPISettings) {}
  void endTransaction() {}
  uint8_t transfer(uint8_t data) { return Trace::spi_transfer(data); }
};

inline SPIClass SPI;