Application of TIME4 Register in STM8

After the STM8 system is reset, all peripheral clocks are in the open state. The user can clear the CLK_PCKENR1 or
The Pcken bit in the CLK_PCKENR2 to turn off the corresponding peripheral is the clock.


Clock Divider Register (CLK_CKDIVR)


If a PIN has only the output capacity of the level, it is said that the PIN is an output pin or drive pin;
If a PIN has the input capability of the level, the pin is said to be an input pin.
Pins with both input and output capabilities are known as general-purpose pins.


The current that is formed when the pin output is high is called the pull current;
The current that is formed when the pin output is low is called the sink current;


Basic type Timer (TIM4/TIM6)

TIME4 can be used as a time-base generator
@inline static void Tick_init (void)
{
TIM4->PSCR = tim4_prescaler_128;//07 Prescaler Register
Tim4->arr = (U8) ((sys_clk/128)/HZ-1);//Auto Reload Register
Tim4->ier |= tim4_it_update;//01 Enable register update interrupt Enable
TIM4->CR1 |= Tim4_cr1_cen; 01 Control Register 1
}
The 3-bit programmable pre-splitter provides 8 crossover ratios of 1, 2, 4, 16, 32, 64, 128, and 8.
The timer consists of a programmable prescaler and a 8-bit upward counter that can be automatically overloaded with overflow interrupt function.


The clock of the timer is the internal clock.


Prescaler is a 7-bit counter that is controlled by a 3-bit register (in the TIMX_PSCR register).