| NUC472_NUC442_BSP V3.03.003 The Board Support Package for NUC472/NUC442

Macros | Functions
TIMER Exported Functions
NUC472/NUC442 Device Driver » TIMER Driver » TIMER Exported Constants
Collaboration diagram for TIMER Exported Functions:

## Macros
#define | TIMER_SET_CMP_VALUE(timer, u32Value)
| This macro is used to set new Timer compared value. More...
#define | TIMER_SET_PRESCALE_VALUE(timer, u32Value)
| This macro is used to set new Timer prescale value. More...
#define | TIMER_IS_ACTIVE(timer)
| This macro is used to check if specify Timer is inactive or active. More...
#define | TIMER_SELECT_TOUT_PIN(timer, u32ToutSel)
| This macro is used to select Timer toggle output pin. More...

## Functions
__STATIC_INLINE void | TIMER_Start (TIMER_T *timer)
| This function is used to start Timer counting. More...
__STATIC_INLINE void | TIMER_Stop (TIMER_T *timer)
| This function is used to stop Timer counting. More...
__STATIC_INLINE void | TIMER_EnableWakeup (TIMER_T *timer)
| This function is used to enable the Timer wake-up function. More...
__STATIC_INLINE void | TIMER_DisableWakeup (TIMER_T *timer)
| This function is used to disable the Timer wake-up function. More...
__STATIC_INLINE void | TIMER_EnableCaptureDebounce (TIMER_T *timer)
| This function is used to enable the capture pin detection de-bounce function. More...
__STATIC_INLINE void | TIMER_DisableCaptureDebounce (TIMER_T *timer)
| This function is used to disable the capture pin detection de-bounce function. More...
__STATIC_INLINE void | TIMER_EnableEventCounterDebounce (TIMER_T *timer)
| This function is used to enable the counter pin detection de-bounce function. More...
__STATIC_INLINE void | TIMER_DisableEventCounterDebounce (TIMER_T *timer)
| This function is used to disable the counter pin detection de-bounce function. More...
__STATIC_INLINE void | TIMER_EnableInt (TIMER_T *timer)
| This function is used to enable the Timer time-out interrupt function. More...
__STATIC_INLINE void | TIMER_DisableInt (TIMER_T *timer)
| This function is used to disable the Timer time-out interrupt function. More...
__STATIC_INLINE void | TIMER_EnableCaptureInt (TIMER_T *timer)
| This function is used to enable the Timer capture trigger interrupt function. More...
__STATIC_INLINE void | TIMER_DisableCaptureInt (TIMER_T *timer)
| This function is used to disable the Timer capture trigger interrupt function. More...
__STATIC_INLINE uint32_t | TIMER_GetIntFlag (TIMER_T *timer)
| This function indicates Timer time-out interrupt occurred or not. More...
__STATIC_INLINE void | TIMER_ClearIntFlag (TIMER_T *timer)
| This function clears the Timer time-out interrupt flag. More...
__STATIC_INLINE uint32_t | TIMER_GetCaptureIntFlag (TIMER_T *timer)
| This function indicates Timer capture interrupt occurred or not. More...
__STATIC_INLINE void | TIMER_ClearCaptureIntFlag (TIMER_T *timer)
| This function clears the Timer capture interrupt flag. More...
__STATIC_INLINE uint32_t | TIMER_GetWakeupFlag (TIMER_T *timer)
| This function indicates Timer has waked up system or not. More...
__STATIC_INLINE void | TIMER_ClearWakeupFlag (TIMER_T *timer)
| This function clears the Timer wakeup interrupt flag. More...
__STATIC_INLINE uint32_t | TIMER_GetCaptureData (TIMER_T *timer)
| This function gets the Timer capture data. More...
__STATIC_INLINE uint32_t | TIMER_GetCounter (TIMER_T *timer)
| This function reports the current timer counter value. More...
uint32_t | TIMER_Open (TIMER_T *timer, uint32_t u32Mode, uint32_t u32Freq)
| This API is used to configure timer to operate in specified mode and frequency. If timer cannot work in target frequency, a closest frequency will be chose and returned. More...
void | TIMER_Close (TIMER_T *timer)
| This API stops Timer counting and disable the Timer interrupt function. More...
int32_t | TIMER_Delay (TIMER_T *timer, uint32_t u32Usec)
| This API is used to create a delay loop for u32usec micro seconds. More...
void | TIMER_EnableCapture (TIMER_T *timer, uint32_t u32CapMode, uint32_t u32Edge)
| This API is used to enable timer capture function with specified mode and capture edge. More...
void | TIMER_DisableCapture (TIMER_T *timer)
| This API is used to disable the Timer capture function. More...
void | TIMER_EnableEventCounter (TIMER_T *timer, uint32_t u32Edge)
| This function is used to enable the Timer counter function with specify detection edge. More...
void | TIMER_DisableEventCounter (TIMER_T *timer)
| This API is used to disable the Timer event counter function. More...
uint32_t | TIMER_GetModuleClock (TIMER_T *timer)
| This API is used to get the clock frequency of Timer. More...

## Detailed Description

## Macro Definition Documentation

## ◆ TIMER_IS_ACTIVE

#define TIMER_IS_ACTIVE | ( |  | timer | ) |

This macro is used to check if specify Timer is inactive or active.

Returns
  timer is activate or inactivate

Return values

  0 | Timer 24-bit up counter is inactive
  1 | Timer 24-bit up counter is active

Definition at line 82 of file timer.h.

## ◆ TIMER_SELECT_TOUT_PIN

#define TIMER_SELECT_TOUT_PIN | ( |  | timer,
|  |  | u32ToutSel
| ) |  |

This macro is used to select Timer toggle output pin.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32ToutSel | Toggle output pin selection, valid values are TIMER_TOGGLE_OUT1 TIMER_TOGGLE_OUT2

Returns
  None

Definition at line 93 of file timer.h.

## ◆ TIMER_SET_CMP_VALUE

#define TIMER_SET_CMP_VALUE | ( |  | timer,
|  |  | u32Value
| ) |  |

This macro is used to set new Timer compared value.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32Value | Timer compare value. Valid values are between 2 to 0xFFFFFF

Returns
  None

Definition at line 63 of file timer.h.

## ◆ TIMER_SET_PRESCALE_VALUE

#define TIMER_SET_PRESCALE_VALUE | ( |  | timer,
|  |  | u32Value
| ) |  |

This macro is used to set new Timer prescale value.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32Value | Timer prescale value. Valid values are between 0 to 0xFF

Returns
  None

Note
  Clock input is divided by (prescale + 1) before it is fed into timer

Definition at line 73 of file timer.h.

## Function Documentation

## ◆ TIMER_ClearCaptureIntFlag()

__STATIC_INLINE void TIMER_ClearCaptureIntFlag | ( | TIMER_T * | timer | ) |

This function clears the Timer capture interrupt flag.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 258 of file timer.h.

## ◆ TIMER_ClearIntFlag()

__STATIC_INLINE void TIMER_ClearIntFlag | ( | TIMER_T * | timer | ) |

This function clears the Timer time-out interrupt flag.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 236 of file timer.h.

## ◆ TIMER_ClearWakeupFlag()

__STATIC_INLINE void TIMER_ClearWakeupFlag | ( | TIMER_T * | timer | ) |

This function clears the Timer wakeup interrupt flag.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 280 of file timer.h.

## ◆ TIMER_Close()

void TIMER_Close | ( | TIMER_T * | timer | ) |

This API stops Timer counting and disable the Timer interrupt function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 84 of file timer.c.

## ◆ TIMER_Delay()

int32_t TIMER_Delay | ( | TIMER_T * | timer,
|  | uint32_t | u32Usec
| ) |  |

This API is used to create a delay loop for u32usec micro seconds.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32Usec | Delay period in micro seconds with 10 usec every step. Valid values are between 10~1000000 (10 micro second ~ 1 second)

Returns
  Delay success or not

Return values

  0 | Success, target delay time reached
  TIMER_TIMEOUT_ERR | Delay function execute failed due to timer stop working

Note
  This API overwrites the register setting of the timer used to count the delay time.
  This API use polling mode. So there is no need to enable interrupt for the timer module used to generate delay

Definition at line 103 of file timer.c.

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## ◆ TIMER_DisableCapture()

void TIMER_DisableCapture | ( | TIMER_T * | timer | ) |

This API is used to disable the Timer capture function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 201 of file timer.c.

## ◆ TIMER_DisableCaptureDebounce()

__STATIC_INLINE void TIMER_DisableCaptureDebounce | ( | TIMER_T * | timer | ) |

This function is used to disable the capture pin detection de-bounce function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 153 of file timer.h.

## ◆ TIMER_DisableCaptureInt()

__STATIC_INLINE void TIMER_DisableCaptureInt | ( | TIMER_T * | timer | ) |

This function is used to disable the Timer capture trigger interrupt function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 214 of file timer.h.

## ◆ TIMER_DisableEventCounter()

void TIMER_DisableEventCounter | ( | TIMER_T * | timer | ) |

This API is used to disable the Timer event counter function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 228 of file timer.c.

## ◆ TIMER_DisableEventCounterDebounce()

__STATIC_INLINE void TIMER_DisableEventCounterDebounce | ( | TIMER_T * | timer | ) |

This function is used to disable the counter pin detection de-bounce function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 174 of file timer.h.

## ◆ TIMER_DisableInt()

__STATIC_INLINE void TIMER_DisableInt | ( | TIMER_T * | timer | ) |

This function is used to disable the Timer time-out interrupt function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 194 of file timer.h.

## ◆ TIMER_DisableWakeup()

__STATIC_INLINE void TIMER_DisableWakeup | ( | TIMER_T * | timer | ) |

This function is used to disable the Timer wake-up function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 132 of file timer.h.

## ◆ TIMER_EnableCapture()

void TIMER_EnableCapture | ( | TIMER_T * | timer,
|  | uint32_t | u32CapMode,
|  | uint32_t | u32Edge
| ) |  |

This API is used to enable timer capture function with specified mode and capture edge.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32CapMode | Timer capture mode. Could be TIMER_CAPTURE_FREE_COUNTING_MODE TIMER_CAPTURE_COUNTER_RESET_MODE
  [in] | u32Edge | Timer capture edge. Possible values are TIMER_CAPTURE_FALLING_EDGE TIMER_CAPTURE_RISING_EDGE TIMER_CAPTURE_FALLING_AND_RISING_EDGE

Returns
  None

Note
  Timer frequency should be configured separately by using TIMER_Open API, or program registers directly

Definition at line 188 of file timer.c.

## ◆ TIMER_EnableCaptureDebounce()

__STATIC_INLINE void TIMER_EnableCaptureDebounce | ( | TIMER_T * | timer | ) |

This function is used to enable the capture pin detection de-bounce function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 143 of file timer.h.

## ◆ TIMER_EnableCaptureInt()

__STATIC_INLINE void TIMER_EnableCaptureInt | ( | TIMER_T * | timer | ) |

This function is used to enable the Timer capture trigger interrupt function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 204 of file timer.h.

## ◆ TIMER_EnableEventCounter()

void TIMER_EnableEventCounter | ( | TIMER_T * | timer,
|  | uint32_t | u32Edge
| ) |  |

This function is used to enable the Timer counter function with specify detection edge.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32Edge | Detection edge of counter pin. Could be ether TIMER_COUNTER_RISING_EDGE, or TIMER_COUNTER_FALLING_EDGE

Returns
  None

Note
  Timer compare value should be configured separately by using TIMER_SET_CMP_VALUE macro or program registers directly.
  While using event counter function, TIMER_TOGGLE_MODE cannot set as timer operation mode.

Definition at line 217 of file timer.c.

## ◆ TIMER_EnableEventCounterDebounce()

__STATIC_INLINE void TIMER_EnableEventCounterDebounce | ( | TIMER_T * | timer | ) |

This function is used to enable the counter pin detection de-bounce function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 164 of file timer.h.

## ◆ TIMER_EnableInt()

__STATIC_INLINE void TIMER_EnableInt | ( | TIMER_T * | timer | ) |

This function is used to enable the Timer time-out interrupt function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 184 of file timer.h.

## ◆ TIMER_EnableWakeup()

__STATIC_INLINE void TIMER_EnableWakeup | ( | TIMER_T * | timer | ) |

This function is used to enable the Timer wake-up function.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Note
  To wake the system from power down mode, timer clock source must be ether LXT or LIRC

Definition at line 122 of file timer.h.

## ◆ TIMER_GetCaptureData()

__STATIC_INLINE uint32_t TIMER_GetCaptureData | ( | TIMER_T * | timer | ) |

This function gets the Timer capture data.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer capture data value

Definition at line 290 of file timer.h.

## ◆ TIMER_GetCaptureIntFlag()

__STATIC_INLINE uint32_t TIMER_GetCaptureIntFlag | ( | TIMER_T * | timer | ) |

This function indicates Timer capture interrupt occurred or not.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer capture interrupt occurred or not

Return values

  0 | Timer capture interrupt did not occur
  1 | Timer capture interrupt occurred

Definition at line 248 of file timer.h.

## ◆ TIMER_GetCounter()

__STATIC_INLINE uint32_t TIMER_GetCounter | ( | TIMER_T * | timer | ) |

This function reports the current timer counter value.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer counter value

Definition at line 300 of file timer.h.

## ◆ TIMER_GetIntFlag()

__STATIC_INLINE uint32_t TIMER_GetIntFlag | ( | TIMER_T * | timer | ) |

This function indicates Timer time-out interrupt occurred or not.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer time-out interrupt occurred or not

Return values

  0 | Timer time-out interrupt did not occur
  1 | Timer time-out interrupt occurred

Definition at line 226 of file timer.h.

## ◆ TIMER_GetModuleClock()

uint32_t TIMER_GetModuleClock | ( | TIMER_T * | timer | ) |

This API is used to get the clock frequency of Timer.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer clock frequency

Note
  This API cannot return correct clock rate if timer source is external clock input.

Definition at line 239 of file timer.c.

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## ◆ TIMER_GetWakeupFlag()

__STATIC_INLINE uint32_t TIMER_GetWakeupFlag | ( | TIMER_T * | timer | ) |

This function indicates Timer has waked up system or not.

Parameters

  [in] | timer | The base address of Timer module

Returns
  Timer has waked up system or not

Return values

  0 | Timer did not wake up system
  1 | Timer wake up system

Definition at line 270 of file timer.h.

## ◆ TIMER_Open()

uint32_t TIMER_Open | ( | TIMER_T * | timer,
|  | uint32_t | u32Mode,
|  | uint32_t | u32Freq
| ) |  |

This API is used to configure timer to operate in specified mode and frequency. If timer cannot work in target frequency, a closest frequency will be chose and returned.

Parameters

  [in] | timer | The base address of Timer module
  [in] | u32Mode | Operation mode. Possible options are TIMER_ONESHOT_MODE TIMER_PERIODIC_MODE TIMER_TOGGLE_MODE TIMER_CONTINUOUS_MODE
  [in] | u32Freq | Target working frequency

Returns
  Real Timer working frequency

Note
  After calling this API, Timer is NOT running yet. But could start timer running be calling TIMER_Start macro or program registers directly

Definition at line 42 of file timer.c.

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## ◆ TIMER_Start()

__STATIC_INLINE void TIMER_Start | ( | TIMER_T * | timer | ) |

This function is used to start Timer counting.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 101 of file timer.h.

## ◆ TIMER_Stop()

__STATIC_INLINE void TIMER_Stop | ( | TIMER_T * | timer | ) |

This function is used to stop Timer counting.

Parameters

  [in] | timer | The base address of Timer module

Returns
  None

Definition at line 111 of file timer.h.