stm32f1 uart4

UART4 is a peripheral device available on STM32F1 microcontrollers. It is a universal asynchronous receiver/transmitter that allows serial communication with other devices, such as sensors, displays, or other microcontrollers.

The UART4 peripheral on STM32F1 microcontrollers has the following features:

- Full-duplex communication (simultaneous transmission and reception)
- Programmable baud rate generator (up to 10 Mbit/s)
- 8-bit or 9-bit data format
- Parity bit generation and detection (even, odd, or no parity)
- Interrupt generation on receive and/or transmit complete, errors, or idle line detection.

To use UART4 on STM32F1 microcontrollers, the following steps are typically required:

1. Configure the GPIO pins for UART4 Tx and Rx.
2. Enable the clock for UART4.
3. Configure the UART4 registers for the desired communication parameters, such as baud rate, data format, and parity.
4. Enable the UART4 interrupt (if desired) and set up the interrupt service routine.
5. Start the UART4 communication by writing data to the Tx register and/or reading data from the Rx register.

Note that the specific steps required may vary depending on the application and the desired communication protocol. It is also important to consult the STM32F1 reference manual for more detailed information on the UART4 peripheral and its registers.