[Nucleo G071 Review] SYSTICK & Comparison of Two Commonly Used Low Power Modes

donatello1996

[Nucleo G071 Review] SYSTICK & Comparison of Two Commonly Used Low Power Modes [Copy link]

The SYSTICK timer of the microcontroller is very commonly used. The most powerful thing about this timer is that it can be used for accurate timing regardless of whether it is a bare metal program or an RTOS program. In the ARM system, without calling the TIM timer, SYSTICK is an ideal timer with simple initialization and calling. To initialize the SYSTICK timer, you need to use an int timing factor: int fac_us; Then set the clock source and division value of the SYSTICK peripheral: HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000); HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); fac_us=64; Write the timing function: void Delay_us(int nus) { int temp; SysTick->LOAD=nus*fac_us; SysTick->VAL=0x00; SysTick->CTRL=0x05; do 5] { temp=SysTick->CTRL; } while((temp&0x01)&&!(temp&(1<<16))); SysTick->CTRL=0x00; SysTick->VAL=0x00; [size=5 ]} void Delay_ms(int nms) { for(int i=0;i

This also needs to take into account the current of the previous stlink. It is more accurate to remove the short-circuit cap.

[Nucleo G071 Review] SYSTICK & Comparison of Two Commonly Used Low Power Modes

xutong

This also needs to take into account the current of the previous stlink. It is more accurate to remove the short-circuit cap.