HAL RCC Overview ¶
Introducing RCC ¶
- group RCC_Introduction
-
-
This introduction is under development.
-
Module and files ¶
The following diagram illustrates the RCC module and its associated files.
Component diagram ¶
The following diagram illustrates the software components involved in the RCC module. It shows the interactions between the user application, HAL drivers, low-level drivers, and the hardware components.
![@startuml
<style>
componentDiagram {
arrow {
FontSize 8
}
}
</style>
title RCC Software Component Diagram
package "HAL/LL" {
[HAL_SERVICE]
[HAL_RCC]
[LL_RCC]
}
package "Low Layer" {
[CMSIS]
[RCC Interrupt routine service]
}
package "HW" {
[STM32_HW]
}
[Appli] --> [HAL_RCC] : HAL RCC API
[Appli] <-- [HAL_RCC] : HAL RCC callback
[HAL_RCC] --> [LL_RCC] : LL RCC API
[HAL_RCC] --> [CMSIS]: direct access
[HAL_RCC] -l-> [HAL_SERVICE] : HAL_GetTick
[HAL_RCC] <-- [RCC Interrupt routine service]
[LL_RCC] --> [CMSIS]:RCC register def
[STM32_HW] -u--> [RCC Interrupt routine service]: RCCx Irq
[STM32_HW] <-u-- [LL_RCC] : RCC registers R/W
@enduml](../../../../_images/plantuml-7d2bdb07bb7c1fff14bb6b1ceb9603c81ecd0a47.png)
Configuration table ¶
The following table lists the configuration defines for the HAL RCC module, specifying their locations, default values, and descriptions:
- group RCC_Configuration_Table
-
¶
Configuration inside the RCC driver ¶
Config defines
Description
Default value
Note
PRODUCT
from IDE
Defined
The selected product (ex STM32U585xx)
PERIPHERAL
from CMSIS
Defined
Peripheral available on the product (ex USART1)
USE_ASSERT_DBG_PARAM
from IDE
None
When defined, enable the params assert
USE_HAL_CHECK_PARAM
from hal_conf.h
0
When set, parameters are checked in runtime
USE_HAL_RCC_MODULE
from hal_conf.h
1
When set, HAL RCC module is enabled
USE_EXTERNAL_ENV
from IDE
Defined
When set, ext. oscillators values are defined
LSE_VALUE
From stm32_external_env.h
32 kHz
Frequency of LSE oscillator (USE_EXTERNAL_ENV)
HSE_VALUE
From stm32_external_env.h
32 MHz
Frequency of HSE oscillator (USE_EXTERNAL_ENV)
EXTERNAL_SAI1_CLOCK_VALUE
From stm32_external_env.h
48 kHz
SAI1 External clock source (USE_EXTERNAL_ENV)
EXTERNAL_SAI2_CLOCK_VALUE
From stm32_external_env.h
48 kHz
SAI2 External clock source (USE_EXTERNAL_ENV)
__ARM_FEATURE_CMSE
Trust Zone
NA
Defined in secure context
HSI_VALUE
st32u5xxxx.h
16 MHz
Frequency of HSI oscillator
MSI_RESET_VALUE
st32u5xxxx.h
4 MHz
Default Frequency of MSI oscillator
MSIRangeTable
system_stm32u5xx.c
-
MSIS/MSIK frequency for each range