mspm0_gpio.hpp

#pragma once
 
#include <ti/driverlib/dl_gpio.h>
 
#include "gpio.hpp"
 
namespace LibXR
{
 
#ifdef GPIOC_BASE
constexpr uint8_t MAX_PORTS = 3;
#elif defined(GPIOB_BASE)
constexpr uint8_t MAX_PORTS = 2;
#else
constexpr uint8_t MAX_PORTS = 1;
#endif
 
class MSPM0GPIO : public GPIO
{
 public:
  explicit MSPM0GPIO(GPIO_Regs* port, uint32_t pin_mask, uint32_t pincm);
 
  bool Read() override;
 
  void Write(bool value) override;
 
  ErrorCode EnableInterrupt() override;
 
  ErrorCode DisableInterrupt() override;
 
  ErrorCode SetConfig(Configuration config) override;
 
  static inline void OnInterrupt(GPIO_Regs* port)
  {
    const int idx = GetPortIndex(reinterpret_cast<uint32_t>(port));  // NOLINT
    OnInterruptDispatch(port, idx);
  }
 
 private:
  static void OnInterruptDispatch(GPIO_Regs* port, int port_idx);
 
  static constexpr int GetPortIndex(uint32_t base_addr)
  {
#ifdef GPIOA_BASE
    if (base_addr == GPIOA_BASE)
    {
      return 0;
    }
#endif
#ifdef GPIOB_BASE
    if (base_addr == GPIOB_BASE)
    {
      return 1;
    }
#endif
#ifdef GPIOC_BASE
    if (base_addr == GPIOC_BASE)
    {
      return 2;
    }
#endif
    return -1;
  }
 
  GPIO_Regs* port_;
  uint32_t pin_mask_;
  uint32_t pincm_;
  LibXR::GPIO::Direction current_direction_ = LibXR::GPIO::Direction::INPUT;
 
  // 安全的编译时nullptr数组初始化 / Safe compile-time initialization of nullptr array
  // NOLINTNEXTLINE(bugprone-dynamic-static-initializers)
  static MSPM0GPIO* instance_map_[MAX_PORTS][32];
};
 
}  // namespace LibXR