Index
Introduction
The STM32F103C8T6 is a high-performance microcontroller from STMicroelectronics, part of the STM32F1 series. It is built around the ARM Cortex-M3 32-bit RISC core, offering a balance of high performance, low power consumption, and rich connectivity features. This microcontroller is suitable for a wide range of applications, including industrial control, consumer electronics, and communication equipment. It comes with various peripherals and interfaces, making it a versatile choice for embedded system developers.
Hardware Overview
- Microcontroller: A powerful STM32F103C8T6 ARM Cortex-M processor serving as the brain of the board.
- Clock Source: Built-in oscillator or crystal for providing clock signals to the microcontroller.
- Flash Memory: Onboard flash memory for storing program code and data.
- Voltage Requirements: Microcontrollers typically require a specific operating voltage, such as 3.3V or 5V. It’s essential to provide the correct voltage to ensure proper operation and prevent damage.
- Reset Circuit: Reset button or circuit for restarting the microcontroller when needed.
- Debug Interface: Debugging and programming interfaces such as SWD (Serial Wire Debug) for development and troubleshooting.
- Power LED: This LED indicates that the device is receiving power and is usually illuminated whenever the device is powered on. It provides a visual indication that the device is operational and receiving the necessary power supply.
- Programming LED: This LED, short for “Programming LED,” is often used in development boards or microcontroller-based systems to indicate when the device is being programmed or programmed successfully. It may blink, flash, or remain steady to provide feedback on the programming process.
Technical Specifications
- Microcontroller: STM32F103C8T6
- Core: ARM Cortex-M3 running at up to 72 MHz
- Memory: 64 KB Flash, 20 KB SRAM
- GPIO: 37 pins
- Analog Inputs: 10-channel 12-bit ADC
- Serial Communication: Up to 3 UART, 2 SPI, and 2 I2C interfaces
- Operating Voltage: 2.0V to 3.6V
- Operating Temperature: -40°C to +85°C
Applications
- Industrial automation
- Consumer electronics
- Medical devices
- Communication equipment
- Robotics
- Internet of Things (IoT) devices
Pinout
- PA0 to PA15: GPIO Port A (General-Purpose I/O)
- PB0 to PB15: GPIO Port B (General-Purpose I/O)
- PC0 to PC15: GPIO Port C (General-Purpose I/O)
Key pins and their functions:
- PA0 to PA3: Analog input (ADC channels 0 to 3), alternative functions for timers and UART
- PB6 and PB7: I2C1 (Inter-Integrated Circuit) SCL and SDA
- PB10 and PB11: USART3 (Universal Synchronous/Asynchronous Receiver/Transmitter) TX and RX
- PA9 and PA10: USART1 TX and RX
- PA13 and PA14: SWDIO (Serial Wire Debug) and SWCLK (Serial Wire Clock) for debugging and programming
Programming the STM32F103C8T6
Method 1: Using the Arduino IDE with STM32duino Core
Step 1: Install STM32duino Core
- Open the Arduino IDE.
- Go to File > Preferences.
- Preferences
- In the “Additional Board Manager URLs” field, add the following URL:
https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json
Step 2: Install STM32 Boards
- Go to Tools > Board > Boards Manager.
- In the search box, type
STM32. - Find STM32 Cores by STMicroelectronics and click Install.
Step 3: Select the STM32 Board
- Go to Tools > Board and select your STM32 board (e.g., “Generic STM32F1 series”).
Sample Blink Code for STM32F103C8T6
void setup() {
// Initialize the built-in LED pin as an output
pinMode(PC13, OUTPUT);
}
void loop() {
// Turn the LED on (HIGH is the voltage level)
digitalWrite(PC13, HIGH);
delay(1000); // Wait for a second
// Turn the LED off by making the voltage LOW
digitalWrite(PC13, LOW);
delay(1000); // Wait for a second
}
By following these steps, you should be able to successfully program your STM32F103C8T6 microcontroller using the Arduino IDE