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STM32F103C8 Blue Pill Board BSP Introduction

This document records the introduction of the BSP (board support package) provided by the RT-Thread development team for the STM32F103C8 Blue Pill development board.

The document is covered in four parts:

Onboard Resources
Quickly Get Started
Advanced Features
Read more

By reading the Quickly Get Started section developers can quickly get their hands on this BSP and run RT-Thread on the board. More advanced features will be introduced in the Advanced Features section to help developers take advantage of RT-Thread to drive more on-board resources.

Onboard Resources

The Blue Pill is a STM32F103 based development board with Cortex-M3 ARM CPU that runs at 72 MHz, 20 KB of RAM and 64 or 128 KB (hidden) of flash memory. The microcontroller (MCU) has a USB port, two serial ports, 16 bit PWM pins and 12 bit ADC pins. It runs at 3.3V, but some of its pins are 5V tolerant.

MCU：STM32F103C8T6 @72MHz, 64KB FLASH , 20KB RAM
Peripherals
- LED：PC13
Debug IO interface type: ST-LINK V2 (SWD)

Quickly Get Started

This BSP provides MDK4, MDK5, and IAR projects for developers and it supports the GCC development environment. Here's an example of the MDK5 development environment, to introduce how to run the system.

Use ST-LINK Debugger to connect the Blue Pill Board

ST-LINK driver:

https://www.st.com/en/development-tools/stsw-link009.html

ST-LINK Debugger	Blue Pill 4-Pin SWD
SWDIO	IO
SWDCLK	CLK
VCC3.3	VCC3.3
GND	GND

Use FTDI adapter(USB to UART) to connect the Blue Pill Board's PA9(Tx) and PA10(Rx) pins

FTDI adapter driver:

https://www.ftdichip.com/FTDrivers.htm

You can use other USB to UART adapters to replace FTDI adapter.

FTDI adapter(USB to UART)	Blue Pill Board
Tx	PA10 Rx
Rx	PA9 Tx
GND	GND
VCC 3.3	Don't need to connect VCC 3.3 pin
VCC 5	Don't need to connect VCC 5 pin

Make sure Jumper Position (Both 0 Position)

BOOTx	High / Low
BOOT0	0
BOOT1	0

Compile and Download

Double-click the project.uvprojx file to open the MDK-Keil5 project (NOT template.uvprojx file)
Click the “option for target” button
- Debug: Choose "ST-LINK Debugger" and Click "Setting" button:
  - Port: choose "SW (Serial Wire)"
  - Flash Download: check "Reset and Run"
Compile and download the program to the board

You can also follow this video to configurate Blue Pill BSP Keil5 project:

https://www.youtube.com/watch?v=0PwBBYXQ08g&t

Running Results

After the program is successfully downloaded, the system runs automatically. Observe the running results of the LED on the development board, and you will see the LED is flashing periodically.

The COM port connects to USART1 (PA9-Tx, PA10-Rx) by default, and when the corresponding serial port (115200-8-1-N) is opened in the terminal tool, the output information of RT-Thread can be seen when the device is reset:

 \ | /
- RT -     Thread Operating System
 / | \     4.0.0 build Dec 21 2018
 2006 - 2018 Copyright by rt-thread team
msh >

Terminal tool - PuTTy

If you have no terminal tool software available, you can download PuTTy:

https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

These two videos will show you how to use PuTTy:

https://www.youtube.com/watch?v=ab4ilbsteWU

https://www.youtube.com/watch?v=dO-BMOzNKcI

Advanced Features

This BSP only enables GPIO and USART1 by default. If you need more advanced features such as SPI, ADC, or to add software packages, you need to configure the BSP with RT-Thread ENV tool, as follows:

Open the ENV tool under the specific BSP folder, eg: bsp/stm32/stm32f103-blue-pill ;
Enter menuconfig command to configure the project, then save and exit;
Enter pkgs --update command to update the package;
Enter scons --target=mdk4/mdk5/iar command to regenerate the project.

Learn how to use RT-Thread ENV, click Here.

Maintained By

Meco Man @ RT-Thread Community

jiantingman@foxmail.com

https://github.com/mysterywolf

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