Init_TIM
 
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Init.Components



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Component Init_TIM for HC08
Timer Interface Module (TIM)
Device Initialization
(Description of the component parameters.)
  • Timer - Selection of the TIM/PIT device module.
  • Settings - Common TIM/PIT module settings
    • Clock settings - Clock/timing settings of the module
      • Prescaler - TIMx:
        This item select either the external pin or one of the seven prescaler outputs as the input to the TIMx counter.
        This item modifies PS[0:2] bits in TxSC register.
        PIT:
        This item select one of the seven prescaler outputs as the input to the PIT counter.
        This item modifies PPS[0:2] bits in PSC register.
        There are 8 modes:
        • 1 - There are no items in this mode.
        • 2 - There are no items in this mode.
        • 4 - There are no items in this mode.
        • 8 - There are no items in this mode.
        • 16 - There are no items in this mode.
        • 32 - There are no items in this mode.
        • 64 - There are no items in this mode.
        • TIM clock pin - The following items are displayed in this mode:
          • External clock [MHz] - This property contain the Period value for TIMx/PIT counter when external clock is selected and supported.
      • Modulo counter - This property contain the modulo value for TIMx/PIT counter
        TIMx: This item modifies all bits in TxMODH:TxMODL register.
        PIT: This item modifies all bits in PMODH:PMODL register.
      • Period - Period of the timer interrupt (for information only).
        This item is influenced by the following properties: Prescaler, Modulo Counter.
    • Channels - Settings of the TIM channels. A PIT periphery and TIM periphery (sometimes) have not any channel. In the case the property is read only.
      One Item of the list looks like:
      Channel - A TIMx Channel
      • Capture/Compare device - Name of the channel 0
      • Settings - Common channel 0 settings
        • Mode - This item modifies channel 0 mode as input capture, output compare.
          This item modifies the MSnB:MSnA:ELSnA:ELSnB bits in the TxSCn register.
          There are 3 modes:
          • Pin not Used - The following items are displayed in this mode:
            • Output preset - Channel 0 output preset.
              This item modifies the MSnB:MSnA:ELSnA:ELSnB bits in the TxSCn register.
            • Channel compare value - The output compare value of the output compare function.
              This item modifies the TxCHnH and TxCHnL registers.
          • Input capture - The following items are displayed in this mode:
            • Input control - Input capture on user selected edge.
              This item modifies the MSnB:MSnA:ELSnA:ELSnB bits in the TxSCn register.
          • Output compare or PWM - The following items are displayed in this mode:
            • Output action - Toggle/Set/Clear output on compare.
              This item modifies the MSnB:MSnA:ELSnA:ELSnB bits in the TxSCn register.
            • Channel compare value - See previous modes for more details
            • Channel duty - Value of the PWM channel duty.
              This item is influenced by the following properties: Channel Compare Value, Modulo Counter.
            • Maximum duty cycle - This property forces the duty cycle of buffered and unbuffered PWM signals to 100%.
              This item modifies the CHnMAX bit in the TxSCn register.
            • Toggle on overflow - This property controls the behaviour of the channel output when the TIMx counter overflows.
              This item modifies the TOVn bit in the TxSCn register.
            • Buffered PWM - This item enables a buffered channel.
              Before changing a channel function by writing to the MSnB:MSnA bits, set the TSTOP and TRST bits in the TxSC register.
              This item modifies the MSnB:MSnA bits in the TxSCn register.
              The following items are available only if the group is enabled (the value is "Enabled"):
      • Pin - Channel 0 pin/signal.
        This item is influenced by the following properties: Mode.
        The following items are available only if the group is enabled (the value is "Used"):
        • Channel pin - Channel 0 pin
        • Pull resistor - Channel 0 pull resistor.
          This item is influenced by the following properties: Mode.

          There are 6 options:
          • no pull resistor: Input without pull resistor is required
          • pull up: Input with pull-up resistor is required
          • pull down: Input with pull-down resistor is required
          • pull up or no pull: Input with pull-up resistor is preferred, but no-pull is acceptable
          • pull down or no pull: Input with pull-down resistor is preferred, but no-pull is acceptable
          • autoselected pull: There are no special requirements for pull resistors

      • Interrupts - Interrupts settings of the channel 0
        • Channel Interrupt - Channel 0 interrupt settings
          • Interrupt - Interrupt vector (for information only).
          • Channel Interrupt - Enable/disable channel 0 interrupt.
            This item modifies the CHnIE bit in the TxSCn register.
          • ISR name - Name of the interrupt service routine (ISR) invoked by this interrupt vector.
            The user code of the routine should handle all respective interrupt flags correctly.
  • Pins - Module pins/signals settings.
    • External clock source - External clock source pin.
      This item is influenced by the following properties: Prescaler.
      The following items are available only if the group is enabled (the value is "Enabled"):
      • Source pin - Name of the pin used as external clock input.
  • Interrupts - Interrupts settings of the module
    There are 2 modes:
    • TIM - The following items are displayed in this mode:
      • Overflow Interrupt - TIM or PIT Overflow interrupt settings
        • Interrupt - Interrupt vector (for information only).
        • Overflow Interrupt - Enable/disable Overflow interrupt.
          This item modifies the TOIE bit in the TxSC register (TIMx device) or POIE bit in the PSC register (PIT device).
        • ISR name - Name of the interrupt service routine (ISR) invoked by this interrupt vector.
          The user code of the routine should handle all respective interrupt flags correctly.
    • PIT or Modulo timer - There are no items in this mode.
  • Initialization - Initialization options of the module
    • Start counter - Set yes/no to enable TIM/PIT module and start counter.
      TIMx: This item modifies the TSTOP bit in the TxSC register
      PIT: This item modifies the PSTOP bit in the PSC register

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