efr32_pwm.h

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#ifndef EFR32_DRIVER_PWM_MCU_H
#define EFR32_DRIVER_PWM_MCU_H
 
#if defined(ARDUINO_ARCH_SILABS)
 
#include <em_timer.h>
 
#ifndef SILABBS_DEFAULT_DEAD_TIME
#define SILABBS_DEFAULT_DEAD_TIME 3
#endif
 
typedef void (*prevTimerInitCCFn)(TIMER_InitCC_TypeDef*, void *params);
typedef void (*prevTimerInitFn)(TIMER_Init_TypeDef*, void *params);
 
typedef enum {
  PWM_P_ACTIVE_HIGH = 0,
  PWM_P_ACTIVE_LOW = 1
} EFR32PwmPolarity;
 
typedef struct {
  int frequency;              /**< PWM frequency */
  bool outInvert;             /**< Invert output */
  EFR32PwmPolarity polarity;  /**< PWM polarity */
} EFR32PwmConfig;
 
typedef struct {
  uint32_t deadTimeNs;
  uint32_t outputMask;
} EFR32PwmDeadTimeConfig;
 
typedef struct {
  TIMER_TypeDef *timer;       /**< TIMER instance */
  uint8_t channel;            /**< TIMER channel */
  uint8_t port;               /**< GPIO port */
  uint8_t pin;                /**< GPIO pin */
} EFR32PwmHiInstance;
 
typedef struct {
  uint8_t port;
  uint8_t pin;
} EFR32PwmLoInstance;
 
typedef struct {
  EFR32PwmHiInstance h;
  EFR32PwmLoInstance l;
} EFR32PwmInstance;
 
// High Side
void pwmHiConfig(
  EFR32PwmInstance *inst,
  TIMER_TypeDef *timer,
  const int pin,
  const uint8_t channel);
 
void pwmHiInit(
  EFR32PwmInstance *inst,
  EFR32PwmConfig *config,
  prevTimerInitCCFn fn,
  void *params);
 
void pwmHiDeinit(
  EFR32PwmInstance *inst);
 
void pwmHiOn(
  EFR32PwmInstance *inst);
 
void pwmHiOff(
  EFR32PwmInstance *inst);
 
void pwmHiSetDutyCycle(
  EFR32PwmInstance *inst,
  float percent);
 
float pwmHiGetDutyCycle(
  EFR32PwmInstance *inst);
 
// Low Side
void pwmLoConfig(
  EFR32PwmInstance *inst,
  const int pin);
 
void pwmLoInit(
  EFR32PwmInstance *inst);
 
void pwmLoDeinit(
  EFR32PwmInstance *inst);
 
void pwmLoOn(
  EFR32PwmInstance *inst);
 
void pwmLoOff(
  EFR32PwmInstance *inst);
 
// Pwm
void pwmInit(
  EFR32PwmInstance *inst,
  EFR32PwmConfig *cfg,
  prevTimerInitCCFn fn,
  void *params);
 
void pwmDeinit(
  EFR32PwmInstance *inst);
 
void pwmOn(
  EFR32PwmInstance *inst);
 
void pwmOff(
  EFR32PwmInstance *inst);
 
void pwmStart(
  EFR32PwmInstance *inst,
  prevTimerInitFn fn,
  void *params);
 
void pwmDeadTimeInit(
  EFR32PwmInstance *inst,
  EFR32PwmDeadTimeConfig *config);
 
#endif
 
#endif