hpm_pwm.hpp

#pragma once
 
#include "hpm_clock_drv.h"
#include "hpm_gptmr_drv.h"
#include "hpm_soc.h"
#include "pwm.hpp"
 
#if defined(PWM_SOC_CMP_MAX_COUNT) && defined(PWM_SOC_OUTPUT_TO_PWM_MAX_COUNT)
#define LIBXR_HPM_PWM_SUPPORTED 1
#include "hpm_pwm_drv.h"
using LibXRHpmPwmType = PWM_Type;
#else
#define LIBXR_HPM_PWM_SUPPORTED 0
using LibXRHpmPwmType = void;
#endif
 
#if !LIBXR_HPM_PWM_SUPPORTED
#define LIBXR_HPM_GPTMR_PWM_FALLBACK 1
#else
#define LIBXR_HPM_GPTMR_PWM_FALLBACK 0
#endif
 
namespace LibXR
{
 
class HPMPWM : public PWM
{
 public:
  enum class Polarity : uint8_t
  {
    NORMAL,   
    INVERTED  
  };
 
  HPMPWM(LibXRHpmPwmType* pwm, clock_name_t clock, uint8_t pwm_index, uint8_t cmp_index,
         Polarity polarity);
 
  ErrorCode SetDutyCycle(float value) override;
 
  ErrorCode SetConfig(Configuration config) override;
 
  ErrorCode Enable() override;
 
  ErrorCode Disable() override;
 
 private:
  static constexpr uint8_t INVALID_CMP_INDEX = 0xFFu;
  static uint8_t ResolveGptmrReloadCmpIndex(uint8_t duty_cmp_index);
 
  LibXRHpmPwmType* pwm_;
  GPTMR_Type* gptmr_;
  clock_name_t clock_;
  uint8_t pwm_index_;
  uint8_t cmp_index_;
  bool invert_;
  uint32_t reload_;
  bool configured_;
};
 
}  // namespace LibXR