lib/pin_config/public/gonk/pin_config.h

#pragma once

#include <Arduino.h>
#include <SPI.h>

namespace gonk::pin_config {

// STM32 Port & pin                    // PCB NET Name
constexpr uint16_t ICE40ResetN = PC13; // ICE_RST_N
constexpr uint16_t ICE40Done = PC8;    // ICE_CDONE
constexpr uint16_t FlashCS = PD2;      // ICE_SPI_SS
constexpr uint16_t FlashHold = PC11;   // FLASH_HOLD
constexpr uint16_t FlashWP = PC12;     // FLASH_WP
constexpr uint16_t FlashMOSI = PB5;    // ICE_SPI_MOSI
constexpr uint16_t FlashMISO = PB4;    // ICE_SPI_MISO
constexpr uint16_t FlashCLK = PB3;     // ICE_SPI_SCK
constexpr uint16_t StatusLed = PB13;   // STATUS

constexpr uint16_t FpgaDspiCS = PB9;   // was PB6;
constexpr uint16_t FpgaDspiMOSI = PC3; // was PC10;
constexpr uint16_t FpgaDspiMISO = PC2; // was PC9;
constexpr uint16_t FpgaDspiCLK = PB10; // was PB2;
constexpr uint16_t FpgaIoReset = PA0;
constexpr uint16_t FpgaIoMode = PB11;
constexpr uint16_t FpgaIoValid = PB6; // was PB10;

class PinConfig {
public:
  PinConfig();

  // Init common MCU pins such as the status LED.
  void Init();
  // Init FPGA specific pins.
  void InitFpgaPins();
  void InitSampleBus();

  // Halt the FPGA with the SPI bus released so SPI flash is accessible from the
  // MCU.
  void FpgaHalt();
  void FpgaSpiConfigMode();
  void FpgaEnable();
  void SPIEnable();
  void SPIDisable();

  SPIClass flash_spi;
  SPIClass fpga_spi;

private:
};

} // namespace gonk::pin_config