setup.md

STM32F103C8T6 (Blue Pill)

Documents

• Reference Manual for STM32F103xx

Pinout

Schematic

Source

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Creating new project in SW4STM32

1. File > New > C Project

   • Set project name
   • Choose Ac6 STM32 MCU GCC

2. Target Configuration

   • Go to Mcu tab
   • Series: STM32F1
   • Mcu: STM32F103C8Tx

3. Firmware Configuration

   • Choose Cube HAL
   • Check Extract all firmware in separate folder
   • Choose As static external libraries
   • Click Finish

4. Replace startup file

   • In some cases, the correct startup file is not copied in automatically by SW4STM32. This will cause interrupt vector functions to not work.
   • Copy ~/.ac6/SW4STM32/firmwares/STM32Cube_FW_F1_V1.6.0/Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/gcc/startup_stm32f103x6.s to ${project_dir}/startup/

Program with st-flash in command line

$ brew install stlink
$ st-flash write hello_world.bin 0x8000000

Using Nucleo Board as ST-Link programmer

1. Remove all jumpers from Nucleo CN2

2. Connect the following:

Function	Nucleo Board	Blue Pill
SWCLK	Pin 2 (CN4)	Pin 2 (Debug)
SWDIO	Pin 4 (CN4)	Pin 3 (Debug)
RESET	Pin 5 (CN4)	R (I/O)
3V3	3V3 (CN6)	Pin 4 (Debug)
GND	GND (CN6)	Pin 1 (Debug)

More details:

• https://os.mbed.com/users/hudakz/code/STM32F103C8T6_Hello/

Boot Modes

BOOT1	BOOT0	Mode
X	0	Flash memory
0	1	Bootloader
1	1	Embedded SRAM

• Top: BOOT0
• Bottom: BOOT1

Fix "Cannot connect to ST-LINK!" error

http://www.kerrywong.com/2012/08/02/the-dreaded-cannot-connect-to-st-link-error-message/

https://www.youtube.com/watch?v=jEz0C2bT2M0&app=desktop

https://forum.sparkfun.com/viewtopic.php?f=18&t=35249#wrap

https://electronics.stackexchange.com/questions/230036/problems-connecting-st-link-v2-and-stm32f4-discovery-board

Symbolic link for drivers (STM32CubeMX and SW4STM32)

# create symbolic link so we don't need to download duplicates
ln -s ~/.ac6/SW4STM32/firmwares ~/STM32Cube/Repository

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Creating C++ project in Keil uVision 5

In Project Window:

[Right-click project] > Options for Target > C/C++ > Misc Controls

--C99 --CPP11

[Right-click main.c]

main.cpp

C++ Source File

Resources

https://electronics.stackexchange.com/questions/279524/stm32-interrupts-and-c-dont-go-well-together http://www.openstm32.org/forumthread2509 https://stackoverflow.com/questions/35288808/first-project-for-stm32-with-hal-in-c https://community.st.com/thread/39920-what-are-your-experiences-of-c-on-this-platform http://www.keil.com/support/docs/3869.htm

C++ Name Mangling

• https://isocpp.org/wiki/faq/mixing-c-and-cpp#cpp-calls-c
• https://en.wikipedia.org/wiki/Name_mangling
• https://stackoverflow.com/questions/36504275/using-c-names-in-c
• https://stackoverflow.com/questions/2168241/is-it-required-to-add-extern-c-in-source-file-also

Note: Open .map file (as a text file) to see linker process