STM32 LL(Low Layer) peripheral libraries such as ADC, UART, SPI, I2C etc.
- Specifically designed for embedded applications
- Ultra lightweight
- Easy import to the project and use
- Full feature support
- No HAL dependencies
How to add CPM to the project, check the link
CPMAddPackage(
NAME STM32Core
GITHUB_REPOSITORY ximtech/STM32Core
GIT_TAG origin/main)An ADC (Analog-To-Digital) converter is an electronic circuit that takes in an analog voltage as input and converts it into digital data, a value that represents the voltage level in binary code.
-
Start project with STM32CubeMX:
- Configuration for Polling ADC:
- Configuration for Interrupt ADC:
- Configuration for DMA ADC:
-
Select: Project Manager -> Advanced Settings -> ADC -> LL
-
Generate Code
-
Add sources to project:
# add in CmakeLists_template.txt or directly to CmakeLists.txt
# link libraries to project
# Polling ADC
add_subdirectory(${STM32_CORE_SOURCE_DIR}/ADC/Polling)
# Interrupt based ADC
add_subdirectory(${STM32_CORE_SOURCE_DIR}/ADC/IT)
# DMA based ADC
add_subdirectory(${STM32_CORE_SOURCE_DIR}/ADC/DMA)
include_directories(${includes}
${ADC_POLLING_DIRECTORY}
${ADC_IT_DIRECTORY}
${ADC_DMA_DIRECTORY})
file(GLOB_RECURSE SOURCES ${sources}
${ADC_POLLING_SOURCES}
${ADC_IT_SOURCES}
${ADC_DMA_SOURCES})
target_link_libraries(${PROJECT_NAME}.elf Vector) # add vector if ADC_IT or ADC_DMA is used- Then Build -> Clean -> Rebuild Project
- Polling ADC code examples:
- Interrupt ADC code examples:
- DMA ADC code examples:
For Interrupt and DMA ADC set handler functions in stm32fXxx_it.c
/******************************************************************************/
/* STM32FXxx STM32 Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32fXxx.s). */
/******************************************************************************/
// This function handles ADC1 global interrupt.
void ADC_IRQHandler(void) {
conventionCompleteCallbackADC(ADC1, ADC_REGULAR_CHANNEL); // set ADC type and channel type
}
// This function handles DMA2 stream0 global interrupt.
void DMA2_Stream0_IRQHandler(void) {
transferCompleteCallbackADC_DMA(DMA2, LL_DMA_STREAM_0); // set DMA type and stream
}Inter-Integrated Circuit (I2C) is a communication bus protocol developed by Philips Semiconductor (now NXP Semiconductors) in 1982. It is a relatively slow protocol but has seen widespread use due to its simplicity and robustness.
-
Start project with STM32CubeMX:
- Configuration for Polling I2C:
- Configuration for Interrupt I2C:
- Configuration for DMA I2C:
-
Select: Project Manager -> Advanced Settings -> I2C -> LL
-
Generate Code
-
Add sources to project:
# add in CmakeLists_template.txt or directly to CmakeLists.txt
# link libraries
add_subdirectory(${STM32_CORE_SOURCE_DIR}/I2C/Polling)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/I2C/IT)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/I2C/DMA)
include_directories(${includes}
${I2C_POLLING_DIRECTORY}
${I2C_IT_DIRECTORY}
${I2C_DMA_DIRECTORY})
file(GLOB_RECURSE SOURCES ${sources}
${I2C_POLLING_SOURCES}
${I2C_IT_SOURCES}
${I2C_DMA_SOURCES})
add_executable(${PROJECT_NAME}.elf ${SOURCES} ${LINKER_SCRIPT}) # executable declaration should be before libraries
target_link_libraries(${PROJECT_NAME}.elf RingBuffer) # add ring buffer if I2C_IT is used
target_link_libraries(${PROJECT_NAME}.elf Vector) # add vector if I2C_DMA is used- Then Build -> Clean -> Rebuild Project
- Polling I2C code examples:
- TODO: add more examples
The USART peripheral is used to interconnect STM32 MPU devices with other systems, typically via RS232 or RS485 protocols.
-
Start project with STM32CubeMX:
- Configuration for Polling USART:
- Configuration for Interrupt USART:
- Configuration for DMA USART:
-
Select: Project Manager -> Advanced Settings -> USART -> LL
-
Generate Code
-
Add sources to project:
# add in CmakeLists_template.txt or directly to CmakeLists.txt
# link libraries
add_subdirectory(${STM32_CORE_SOURCE_DIR}/USART/DMA)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/USART/IT)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/USART/Polling)
include_directories(${includes}
${USART_POLLING_DIRECTORY}
${USART_IT_DIRECTORY}
${USART_DMA_DIRECTORY})
file(GLOB_RECURSE SOURCES ${sources}
${USART_POLLING_SOURCES}
${USART_IT_SOURCES}
${USART_DMA_SOURCES})
target_link_libraries(${PROJECT_NAME}.elf RingBuffer) # add ring buffer if USART_IT is used
target_link_libraries(${PROJECT_NAME}.elf Vector) # add vector if USART_DMA is used- Then Build -> Clean -> Rebuild Project
- Polling USART code example:
- Interrupt USART code example:
- DMA USART code example:
SPI is an acronym for (Serial Peripheral Interface) pronounced as “S-P-I” or “Spy”. Which is an interface bus typically used for serial communication between microcomputer systems and other devices, memories, and sensors.
-
Start project with STM32CubeMX:
- Configuration for Polling SPI:
- Configuration for Interrupt SPI:
- Configuration for DMA SPI:
-
Select: Project Manager -> Advanced Settings -> SPI -> LL
-
Generate Code
-
Add sources to project:
# add in CmakeLists_template.txt or directly to CmakeLists.txt
# link libraries
add_subdirectory(${STM32_CORE_SOURCE_DIR}/SPI/Polling)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/SPI/IT)
add_subdirectory(${STM32_CORE_SOURCE_DIR}/SPI/DMA)
include_directories(${includes}
${SPI_POLLING_DIRECTORY}
${SPI_IT_DIRECTORY}
${SPI_DMA_DIRECTORY})
file(GLOB_RECURSE SOURCES ${sources}
${SPI_POLLING_SOURCES}
${SPI_IT_SOURCES}
${SPI_DMA_SOURCES})
target_link_libraries(${PROJECT_NAME}.elf RingBuffer) # add ring buffer if SPI_IT is used
target_link_libraries(${PROJECT_NAME}.elf Vector) # add vector if SPI_DMA is used- Then Build -> Clean -> Rebuild Project
- Polling SPI code example:
- Interrupt SPI code example:
- DMA SPI code example:
A real-time clock (RTC) is a computer clock that keeps track of the current time.
-
Start project with STM32CubeMX:
- Configuration for Polling SPI:
-
Select: Project Manager -> Advanced Settings -> RTC -> LL
-
Generate Code
-
Add sources to project:
# add in CmakeLists_template.txt or directly to CmakeLists.txt
# link libraries
CPMAddPackage(
NAME GlobalDateTime
GITHUB_REPOSITORY ximtech/GlobalDateTime
GIT_TAG origin/main
OPTIONS
"ENABLE_TIME_ZONE_SUPPORT ON"
"ENABLE_TIME_ZONE_HISTORIC_RULES OFF")
add_subdirectory(${STM32_CORE_SOURCE_DIR}/RTC)
include_directories(${includes} ${RTC_DIRECTORY})
file(GLOB_RECURSE SOURCES ${sources} ${RTC_SOURCES})
target_link_libraries(${PROJECT_NAME}.elf GlobalDateTime) # library requires date-time library- Then Build -> Clean -> Rebuild Project