Using STM8's TIM1 to implement a running light experiment (using an external clock)-EEWORLD

Collect

The internal and external clocks are automatically switched, and the effect of external clock failure can be observed (external clock changes quickly, internal clock changes slowly). The clock initialization procedure is as follows:

void CLK_Init(void)
{
    //CLK_CKDIVR &= ~0x10;//Clock divider register
    //CLK_CKDIVR |= 0x01;
    CLK_ECKR=0x03;//External clock register External clock is ready, external clock is on

    CLK_SWCR=0x02;//Switch control register enables switching mechanism
    CLK_SWR=0xB4;//Master clock switch register selects HSE as the master clock sourcewhile
    (!(CLK_SWCR & 0x08)); /* Wait for switch done If this statement is not present,
    the switch successful. The internal clock is used during simulation. When the simulation is stopped, the external clock is switched to, but
    after power-on or reset, it returns to the internal clock state (Debug mode)*/

  /* verify the external clock is selected (optional) */
    //if (CLK_CMSR != 0xB4)
      //while(1);
    CLK_CSSR=0x01;//Clock security system register

}

Keywords：STM8 TIM1 Reference address：Using STM8's TIM1 to implement a running light experiment (using an external clock)

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