Apollo 3 plus CTIMER操作

apollo 3 plus定時器有7組

#define AM_HAL_CTIMER_INT_TIMERA0C0         CTIMER_INTEN_CTMRA0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA0C1         CTIMER_INTEN_CTMRA0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C0         CTIMER_INTEN_CTMRA1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C1         CTIMER_INTEN_CTMRA1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C0         CTIMER_INTEN_CTMRA2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C1         CTIMER_INTEN_CTMRA2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C0         CTIMER_INTEN_CTMRA3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C1         CTIMER_INTEN_CTMRA3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C0         CTIMER_INTEN_CTMRA4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C1         CTIMER_INTEN_CTMRA4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C0         CTIMER_INTEN_CTMRA5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C1         CTIMER_INTEN_CTMRA5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C0         CTIMER_INTEN_CTMRA6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C1         CTIMER_INTEN_CTMRA6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C0         CTIMER_INTEN_CTMRA7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C1         CTIMER_INTEN_CTMRA7C1INT_Msk

#define AM_HAL_CTIMER_INT_TIMERB0C0         CTIMER_INTEN_CTMRB0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB0C1         CTIMER_INTEN_CTMRB0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C0         CTIMER_INTEN_CTMRB1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C1         CTIMER_INTEN_CTMRB1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C0         CTIMER_INTEN_CTMRB2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C1         CTIMER_INTEN_CTMRB2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C0         CTIMER_INTEN_CTMRB3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C1         CTIMER_INTEN_CTMRB3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C0         CTIMER_INTEN_CTMRB4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C1         CTIMER_INTEN_CTMRB4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C0         CTIMER_INTEN_CTMRB5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C1         CTIMER_INTEN_CTMRB5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C0         CTIMER_INTEN_CTMRB6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C1         CTIMER_INTEN_CTMRB6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C0         CTIMER_INTEN_CTMRB7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C1         CTIMER_INTEN_CTMRB7C1INT_Msk

定時器配置函數 

void am_hal_ctimer_config_single(uint32_t ui32TimerNumber,uint32_t ui32TimerSegment,uint32_t ui32ConfigVal)

1. 參數uint32_t ui32TimerNumber 定時器序號，取值0~7
2. uint32_t ui32TimerSegment定時器段，取值如下

#define AM_HAL_CTIMER_TIMERA                0x0000FFFF
#define AM_HAL_CTIMER_TIMERB                0xFFFF0000
#define AM_HAL_CTIMER_BOTH                  0xFFFFFFFF

   3. 參數uint32_t ui32ConfigVal爲配置參數，此參數是個組合字段

//時鐘源選擇
#define AM_HAL_CTIMER_CLK_PIN               _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x00)
#define AM_HAL_CTIMER_HFRC_12MHZ            _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x01)
#define AM_HAL_CTIMER_HFRC_3MHZ             _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x02)
#define AM_HAL_CTIMER_HFRC_187_5KHZ         _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x03)
#define AM_HAL_CTIMER_HFRC_47KHZ            _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x04)
#define AM_HAL_CTIMER_HFRC_12KHZ            _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x05)
#define AM_HAL_CTIMER_XT_32_768KHZ          _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x06)
#define AM_HAL_CTIMER_XT_16_384KHZ          _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x07)
#define AM_HAL_CTIMER_XT_2_048KHZ           _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x08)
#define AM_HAL_CTIMER_XT_256HZ              _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x09)
#define AM_HAL_CTIMER_LFRC_512HZ            _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0A)
#define AM_HAL_CTIMER_LFRC_32HZ             _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0B)
#define AM_HAL_CTIMER_LFRC_1HZ              _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0C)
#define AM_HAL_CTIMER_LFRC_1_16HZ           _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0D)
#define AM_HAL_CTIMER_RTC_100HZ             _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0E)
#define AM_HAL_CTIMER_HCLK_DIV4             _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x0F)
#define AM_HAL_CTIMER_XT_DIV4               _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x10)
#define AM_HAL_CTIMER_XT_DIV8               _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x11)
#define AM_HAL_CTIMER_XT_DIV32              _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x12)
#define AM_HAL_CTIMER_RSVD                  _VAL2FLD(CTIMER_CTRL0_TMRA0CLK, 0x13)

//定時器工作模式選擇
//! Single Count: Counts one time to the compare value, then the output
//! changes polarity and stays at that level, with an optional interrupt.
#define AM_HAL_CTIMER_FN_ONCE               _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 0)
//! Repeated Count: Periodic 1-clock-cycle wide pulses with optional interrupts.
#define AM_HAL_CTIMER_FN_REPEAT             _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 1)
//! Single Pulse (One Shot): A single pulse of programmed width, with an optional interrupt.
#define AM_HAL_CTIMER_FN_PWM_ONCE           _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 2)
//! Repeated Pulse: A rectangular (or square) waveform with programmed high and
//! low widths, and optional interrupts on each cycle.
#define AM_HAL_CTIMER_FN_PWM_REPEAT         _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 3)
//! Single Pattern: one burst of bits specified by the CMPR0/1/2/3 registers.
#define AM_HAL_CTIMER_FN_PTN_ONCE           _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 4)
//! Repeated Pattern: repeated burst of bits specified by the CMPR0/1/2/3 registers.
#define AM_HAL_CTIMER_FN_PTN_REPEAT         _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 5)
//! Continuous: Free running timer with a single level change on the output and
//! a single optional interrupt.
#define AM_HAL_CTIMER_FN_CONTINUOUS         _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 6)
//! Alternate Pulse: like Repeated Pulse but alternating between two different
//! pulse width/spacing settings.
#define AM_HAL_CTIMER_FN_PWM_ALTERNATE      _VAL2FLD(CTIMER_CTRL0_TMRA0FN, 7)

// 控制行爲選擇
#define AM_HAL_CTIMER_INT_ENABLE            CTIMER_CTRL0_TMRA0IE0_Msk
#define AM_HAL_CTIMER_PIN_ENABLE            CTIMER_CTRL0_TMRA0PE_Msk
#define AM_HAL_CTIMER_PIN_INVERT            CTIMER_CTRL0_TMRA0POL_Msk
#define AM_HAL_CTIMER_CLEAR                 CTIMER_CTRL0_TMRA0CLR_Msk

使能定時器中斷

void am_hal_ctimer_int_enable(uint32_t ui32Interrupt) 

 參數uint32_t ui32Interrupt爲定時器比較匹配組序號

#define AM_HAL_CTIMER_INT_TIMERA0C0         CTIMER_INTEN_CTMRA0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA0C1         CTIMER_INTEN_CTMRA0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C0         CTIMER_INTEN_CTMRA1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C1         CTIMER_INTEN_CTMRA1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C0         CTIMER_INTEN_CTMRA2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C1         CTIMER_INTEN_CTMRA2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C0         CTIMER_INTEN_CTMRA3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C1         CTIMER_INTEN_CTMRA3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C0         CTIMER_INTEN_CTMRA4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C1         CTIMER_INTEN_CTMRA4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C0         CTIMER_INTEN_CTMRA5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C1         CTIMER_INTEN_CTMRA5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C0         CTIMER_INTEN_CTMRA6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C1         CTIMER_INTEN_CTMRA6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C0         CTIMER_INTEN_CTMRA7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C1         CTIMER_INTEN_CTMRA7C1INT_Msk

#define AM_HAL_CTIMER_INT_TIMERB0C0         CTIMER_INTEN_CTMRB0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB0C1         CTIMER_INTEN_CTMRB0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C0         CTIMER_INTEN_CTMRB1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C1         CTIMER_INTEN_CTMRB1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C0         CTIMER_INTEN_CTMRB2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C1         CTIMER_INTEN_CTMRB2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C0         CTIMER_INTEN_CTMRB3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C1         CTIMER_INTEN_CTMRB3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C0         CTIMER_INTEN_CTMRB4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C1         CTIMER_INTEN_CTMRB4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C0         CTIMER_INTEN_CTMRB5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C1         CTIMER_INTEN_CTMRB5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C0         CTIMER_INTEN_CTMRB6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C1         CTIMER_INTEN_CTMRB6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C0         CTIMER_INTEN_CTMRB7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C1         CTIMER_INTEN_CTMRB7C1INT_Msk

 

設置定時器週期

  void am_hal_ctimer_period_set(uint32_t ui32TimerNumber, uint32_t ui32TimerSegment, uint32_t ui32Period, uint32_t ui32OnTime)

1. 參數uint32_t ui32TimerNumber爲定時器序號，取值0~7
2. 參數 uint32_t ui32TimerSegment爲定時器段

#define AM_HAL_CTIMER_TIMERA                0x0000FFFF
#define AM_HAL_CTIMER_TIMERB                0xFFFF0000
#define AM_HAL_CTIMER_BOTH                  0xFFFFFFFF

  3. 參數uint32_t ui32Period爲定時器週期設置 

  4.參數uint32_t ui32OnTime：set the number of clocks where the output signal is high

註冊定時器回調函數

 void m_hal_ctimer_int_register(uint32_t ui32Interrupt,am_hal_ctimer_handler_t pfnHandler)

1.  參數uint32_t ui32Interrupt爲定時器比較匹配中斷組號

#define AM_HAL_CTIMER_INT_TIMERA0C0         CTIMER_INTEN_CTMRA0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA0C1         CTIMER_INTEN_CTMRA0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C0         CTIMER_INTEN_CTMRA1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA1C1         CTIMER_INTEN_CTMRA1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C0         CTIMER_INTEN_CTMRA2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA2C1         CTIMER_INTEN_CTMRA2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C0         CTIMER_INTEN_CTMRA3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA3C1         CTIMER_INTEN_CTMRA3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C0         CTIMER_INTEN_CTMRA4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA4C1         CTIMER_INTEN_CTMRA4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C0         CTIMER_INTEN_CTMRA5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA5C1         CTIMER_INTEN_CTMRA5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C0         CTIMER_INTEN_CTMRA6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA6C1         CTIMER_INTEN_CTMRA6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C0         CTIMER_INTEN_CTMRA7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERA7C1         CTIMER_INTEN_CTMRA7C1INT_Msk

#define AM_HAL_CTIMER_INT_TIMERB0C0         CTIMER_INTEN_CTMRB0C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB0C1         CTIMER_INTEN_CTMRB0C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C0         CTIMER_INTEN_CTMRB1C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB1C1         CTIMER_INTEN_CTMRB1C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C0         CTIMER_INTEN_CTMRB2C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB2C1         CTIMER_INTEN_CTMRB2C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C0         CTIMER_INTEN_CTMRB3C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB3C1         CTIMER_INTEN_CTMRB3C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C0         CTIMER_INTEN_CTMRB4C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB4C1         CTIMER_INTEN_CTMRB4C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C0         CTIMER_INTEN_CTMRB5C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB5C1         CTIMER_INTEN_CTMRB5C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C0         CTIMER_INTEN_CTMRB6C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB6C1         CTIMER_INTEN_CTMRB6C1INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C0         CTIMER_INTEN_CTMRB7C0INT_Msk
#define AM_HAL_CTIMER_INT_TIMERB7C1         CTIMER_INTEN_CTMRB7C1INT_Msk

2.參數am_hal_ctimer_handler_t pfnHandler爲註冊的回調函數指針，函數指針原型如下

typedef void (*am_hal_ctimer_handler_t)(void);

啓動定時器

void am_hal_ctimer_start(uint32_t ui32TimerNumber, uint32_t ui32TimerSegment) 

1.   參數uint32_t ui32TimerNumber爲定時器序號，取值0~7
2. 參數 uint32_t ui32TimerSegment爲定時器段，取值如下

#define AM_HAL_CTIMER_TIMERA                0x0000FFFF
#define AM_HAL_CTIMER_TIMERB                0xFFFF0000
#define AM_HAL_CTIMER_BOTH                  0xFFFFFFFF

獲取定時器中斷狀態

uint32_t am_hal_ctimer_int_status_get(bool bEnabledOnly) 

1. 參數bool bEnabledOnly : if true returns the status of the enabled interrupts only.
2. 返回值：The return value will be the logical OR of one or more of the following  values:
   
       AM_REG_CTIMER_INTEN_CTMRAxC0INT_M, AM_HAL_CTIMER_INT_TIMERAxC1,
   
      RetVal either the timer interrupt status, or interrupt enabled.

清除定時器中斷標誌

void am_hal_ctimer_int_clear(uint32_t ui32Interrupt)

    參數uint32_t ui32Interrupt,由am_hal_ctimer_int_status_get函數獲取提供

註冊的回調函數調用處理

void am_hal_ctimer_int_service(uint32_t ui32Status)

參數uint32_t ui32Status,由am_hal_ctimer_int_status_get函數獲取提供

•  以下使用ctime0比較器A爲例

void am_ctimer_isr(void)
{
  
  // Clear TimerA0 Interrupt.
 	
  uint32_t status = am_hal_ctimer_int_status_get(true);
	
  am_hal_ctimer_int_clear(status);
  am_hal_ctimer_int_service(status);
  am_util_stdio_printf("AM_HAL_CTIMER_INT_TIMERA0C0 = %x\n",status);
}


void timer0_handler(void)
{
   am_util_stdio_printf("timer0_handler\n");
}


void init_ctime0(void)
{

   
  am_hal_ctimer_config_single(0, AM_HAL_CTIMER_TIMERA,
                              AM_HAL_CTIMER_XT_32_768KHZ |
                                AM_HAL_CTIMER_FN_REPEAT |
                                 AM_HAL_CTIMER_INT_ENABLE);

	
  am_hal_ctimer_int_enable(AM_HAL_CTIMER_INT_TIMERA0C0);

  am_hal_ctimer_period_set(0, AM_HAL_CTIMER_TIMERA, 32768, 0);

  am_hal_ctimer_int_register(AM_HAL_CTIMER_INT_TIMERA0C0,timer0_handler);
  
  // Start the timer.
  am_hal_ctimer_start(0, AM_HAL_CTIMER_TIMERA);

   NVIC_EnableIRQ(CTIMER_IRQn);
   am_hal_interrupt_master_enable();
}