The project will cover the configuration and implementation of each mode on the STM32 microcontroller using the HAL (Hardware Abstraction Layer) library. The project will also include practical examples of using each mode for data transfer between STM32 and Virtual Terminal.
In polling mode, the microcontroller continuously checks for incoming data from the USART and processes it. This mode is relatively simple but can consume significant processing power.
In interrupt mode, the microcontroller receives a signal from the USART when data is ready to be processed. This mode is more efficient since the microcontroller can perform other tasks while waiting for data to arrive.
In DMA (Direct Memory Access) mode, the microcontroller can transfer data between the USART and memory without CPU intervention. This mode can significantly reduce the processing overhead and improve the overall performance of the system.
STM32CubeMX Configuration- Create new STM32F103C6 project
- Set system clock to 16MHz (HSI → PLL ×4)
- Configure USART1 and USART2 as Asynchronous
- Enable Global Interrupt for USART1
- Enable DMA for USART2_TX
- GPIO configuration: PB0, PB1, PB2 as input (pull-down or pull-up) PB14, PB15 as output
- Generate initialization code
- Open generated project
- Add application logic in main.c
- Implement ISRs in stm32f1xx_it.c
- Build
- Add STM32F103C6 to schematic
- Connect test components (LEDs/buttons)
- Load compiled .hex file
- Start simulation
If you have any questions or suggestions don't hesitate to leave a comment below
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