Example description
Example Description
This example demonstrates how to declare a dynamic peripherals pointers used for
Debug mode.
To use Debug mode you have to add the lib_dbg.c file to your application.
This creates a pointer to the peripheral structure in SRAM. Debugging consequently
becomes easier and all register settings can be obtained by dumping a peripheral
variable.
When the "USE_FULL_ASSERT" label is uncommented (in stm32f10x_conf.h file),
the assert_param macro is expanded and run-time checking is enabled in the firmware
library code. The run-time checking allows checking that all the library functions
input value lies within the parameter allowed values.
The associated program simulates wrong parameter passed to library function and the
source of the error is printed on Hyperterminal (through USART).
note
The Debug mode increases the code size and reduces the code performance. For this
reason, it is recommended to used it only when debugging the application and to
remove it from the final application code.
Directory contents
- Lib_DEBUG/stm32f10x_conf.h Library Configuration file
- Lib_DEBUG/stm32f10x_it.c Interrupt handlers
- Lib_DEBUG/stm32f10x_it.h Header for stm32f10x_it.c
- Lib_DEBUG/main.c Main program
- Lib_DEBUG/lib_dbg.c Peripherals pointers initialization
- Lib_DEBUG/lib_dbg.h Header for lib_dbg.c
Hardware and Software environment
- This example runs on STM32F10x Connectivity line, High-Density, Medium-Density
and Low-Density Devices.
- This example has been tested with STMicroelectronics STM3210C-EVAL (STM32F10x
Connectivity line), STM3210E-EVAL (STM32F10x High-Density) and STM3210B-EVAL
(STM32F10x Medium-Density) evaluation boards and can be easily tailored to
any other supported device and development board.
To select the STMicroelectronics evaluation board used to run the example,
uncomment the corresponding line in stm32_eval.h file (under Utilities\STM32_EVAL)
- STM3210C-EVAL Set-up
- Connect a null-modem female/female RS232 cable between the DB9 connector
CN6 and PC serial port.
note Make sure that jumpers JP19 and JP18 are open.
- STM3210E-EVAL Set-up
- Connect a null-modem female/female RS232 cable between the DB9 connector
CN12 and PC serial port.
- STM3210B-EVAL Set-up
- Connect a null-modem female/female RS232 cable between the DB9 connector
CN6 and PC serial port.
- Hyperterminal configuration:
- Word Length = 8 Bits
- One Stop Bit
- No parity
- BaudRate = 115200 baud
- flow control: None
How to use it ?
In order to make the program work, you must do the following:
- Create a project and setup all project configuration
- Add the required Library files:
- stm32f10x_gpio.c
- stm32f10x_rcc.c
- stm32f10x_usart.c
- stm32f10x_exti.c
- misc.c
- system_stm32f10x.c (under Libraries\CMSIS\Core\CM3)
- stm32_eval.c (under Utilities\STM32_EVAL)
- Edit stm32f10x.h file to select the device you are working on.
- Edit stm32_eval.h file to select the evaluation board you will use.
Tip: You can tailor the provided project template to run this example, for
more details please refer to "stm32f10x_stdperiph_lib_um.chm" user
manual; select "Peripheral Examples" then follow the instructions
provided in "How to proceed" section.
- Link all compiled files and load your image into target memory
- Run the example
note
- Low-density devices are STM32F101xx and STM32F103xx microcontrollers where
the Flash memory density ranges between 16 and 32 Kbytes.
- Medium-density devices are STM32F101xx and STM32F103xx microcontrollers where
the Flash memory density ranges between 32 and 128 Kbytes.
- High-density devices are STM32F101xx and STM32F103xx microcontrollers where
the Flash memory density ranges between 256 and 512 Kbytes.
- Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.