PIN CLASS from _ami_

#ifndef _PIN_H
#define _PIN_H

extern "C"
{
  #include <libopencm3/stm32/gpio.h>
}

enum class PinMode
{
  INPUT,
  OUTPUT_10MHZ,
  OUTPUT_2MHZ,
  OUTPUT_50MHZ,
};

enum class PinConfig
{
  INPUT_ANALOG,
  INPUT_FLOAT,
  INPUT_PULLUPDOWN,
  OUTPUT_PUSHPULL,
  OUTPUT_OPENDRAIN,
  OUTPUT_ALTFPUSHPULL,
  OUTPUT_ALTFOPENDRAIN
};

class pin
{
  volatile uint32_t _pinBaseAddr;
  uint32_t _port;

  uint8_t _getNativePinMode(PinMode pm);

  uint8_t _getNativePinConfig(PinConfig pc);

public:
  pin(volatile uint32_t pinBaseAddr, uint32_t port);
  pin() {}


  void assign(volatile uint32_t pinBaseAddr, uint32_t port);
  void setMode(PinMode pm, PinConfig pc);
  void on();
  void off();
  void toggle();
  bool get();
};


USAGE:

01:55 _ami_: pin p(GPIOC, GPIO13);
01:55 _ami_:   p.setMode(PinMode::OUTPUT_50MHZ, PinConfig::OUTPUT_PUSHPULL);
01:55 _ami_: while (1) {  p.toggle();
01:55 _ami_:  time::delay(1000); }