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This is an old revision of the document!
This demo is targeted towards the Olimex STM32P103 board, with 128 kB internal Flash EEPROM and 20 kB internal RAM.
To program the bootloader into the internal flash on the STM32F103 microcontroller, the Olimex ARM-USB-TINY-H JTAG interface was used in combination with OpenOCD 0.4.0. However, this is not required if you have another means of programming the internal flash.
To compile the demo programs you can use the Rowley Crossworks for ARM development environment or invoke the make utility from the command line with Codesourcery G++ Lite (Target OS EABI).
Before the bootloader can be used, it needs to be built and programmed into the STM32F103's internal flash memory. The steps in this section only need to be done once.
Batch files are added to aid in building the software program. First clean the bootloader program by double-clicking the file “\Target\Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Boot\cmd\clean.bat”. Next, build the bootloader program by double-clicking the file “\Target\Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Boot\cmd\build.bat”. The output should look like:
+++ Compiling [hooks.o] +++ Compiling [main.o] +++ Compiling [boot.o] ... +++ Linking [openbtl_olimex_stm32p103.elf] ... +++ Build complete [openbtl_olimex_stm32p103.srec]
The bootloader program is now ready to be programmed into the internal flash memory of the STM32F103. Using your favorite programmer, flash the bootloader using one of the following files, depending on what file type your programmer supports:
When using Rowley CrossWorks, simply open the project from within CrossWorks. The project file is located at: \Target\Demo\ARMCM3_STM32_Olimex_STM32P103_Crossworks\Boot\ide\
The bootloader program is now ready to be programmed into the internal flash memory of the STM32F103. Using your favorite programmer, flash the bootloader using one of the following files, depending on what file type your programmer supports:
The Microboot utility needs to be configured to connect to the correct COM-port and to communication at the correct baudrate:
Once you saved the settings by clicking the “OK”-button twice, you can close Microboot by clicking the “Cancel”-button on the main screen. Microboot is now ready for action!
Batch files are added to aid in building the demo program. First clean the demo program by double-clicking the file “\Target\Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Prog\cmd\clean.bat”. Next, build the demo program by double-clicking the file “\Target\Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Prog\cmd\build.bat”. The output should look like:
+++ Compiling [boot.c] +++ Compiling [main.c] ... +++ Linking [demoprog_olimex_stm32p103.elf] ... +++ Build complete [demoprog_olimex_stm32p103.srec]
The output file is
When using Rowley CrossWorks, simply open the project from within CrossWorks. The project file is located at: \Target\Demo\ARMCM3_STM32_Olimex_STM32P103_Crossworks\Prog\ide\
The output file is
To download this demoprog_olimex_stm32p103.srec file to the remaining flash memory using the bootloader, start the Microboot program and click the “Browse”-button. Browse to the “\Target\Demo\ARMCM3_STM32_Olimex_STM32P103_Crossworks\Prog\bin\” directory and select the demoprog_olimex_stm32p103.srec file to start the download.
Once the download completed, the newly programmed software will be started by the bootloader. You can verify this by checking that the status LED blinks. Congratulations! That's all there is to using the bootloader.