Collaboration diagram for DELAY:Functions | |
| __STATIC_INLINE void | LL_InitTick (uint32_t HCLKFrequency, uint32_t Ticks) |
| This function configures the Cortex-M SysTick source of the time base. More... | |
| void | LL_Init1msTick (uint32_t HCLKFrequency) |
| This function configures the Cortex-M SysTick source to have 1ms time base. More... | |
| void | LL_mDelay (uint32_t Delay) |
| This function provides accurate delay (in milliseconds) based on SysTick counter flag. More... | |
Detailed Description
Function Documentation
◆ LL_Init1msTick()
| void LL_Init1msTick | ( | uint32_t | HCLKFrequency | ) |
This function configures the Cortex-M SysTick source to have 1ms time base.
- Note
- When a RTOS is used, it is recommended to avoid changing the Systick configuration by calling this function, for a delay use rather osDelay RTOS service.
- Parameters
-
HCLKFrequency HCLK frequency in Hz
- Note
- HCLK frequency can be calculated thanks to RCC helper macro or function LL_RCC_GetSystemClocksFreq
- Return values
-
None
Definition at line 257 of file stm32f4xx_ll_utils.c.
◆ LL_InitTick()
| __STATIC_INLINE void LL_InitTick | ( | uint32_t | HCLKFrequency, |
| uint32_t | Ticks | ||
| ) |
This function configures the Cortex-M SysTick source of the time base.
- Parameters
-
HCLKFrequency HCLK frequency in Hz (can be calculated thanks to RCC helper macro)
- Note
- When a RTOS is used, it is recommended to avoid changing the SysTick configuration by calling this function, for a delay use rather osDelay RTOS service.
- Parameters
-
Ticks Frequency of Ticks (Hz)
- Return values
-
None
Definition at line 260 of file stm32f4xx_ll_utils.h.
◆ LL_mDelay()
| void LL_mDelay | ( | uint32_t | Delay | ) |
This function provides accurate delay (in milliseconds) based on SysTick counter flag.
- Note
- When a RTOS is used, it is recommended to avoid using blocking delay and use rather osDelay service.
- To respect 1ms timebase, user should call LL_Init1msTick function which will configure Systick to 1ms
- Parameters
-
Delay specifies the delay time length, in milliseconds.
- Return values
-
None
Definition at line 273 of file stm32f4xx_ll_utils.c.
