How do you communicate with an UART device?
2 The Interrupt Method
The CPU initializes the UART receive hardware so that it fires an interrupt signal whenever a new byte of data is received.
And in the ISR code, we save the received data in a buffer for further processing.
This way of handling the UART data reception is a non-blocking way..
How does UART communicate?
In UART communication, two UARTs communicate directly with each other.
The transmitting UART converts parallel data from a controlling device like a CPU into serial form, transmits it in serial to the receiving UART, which then converts the serial data back into parallel data for the receiving device..
How does UART work in stm32?
The data is transmitted using blocking mode i.e the CPU will block every other operation until the data transfer is complete.
This method is good to use if you are only using UART and nothing else, otherwise all other operations will be affected..
How to implement UART in STM32?
UART stands for Universal Asynchronous Receiver Transmitter.
USART stands for Universal Synchronous Asynchronous Receiver Transmitter.
They are basically just a piece of hardware that converts parallel data into serial data..
How to transmit data using UART in STM32?
Communication in UART can be simplex (data is sent in one direction only), half-duplex (each side speaks but only one at a time), or full-duplex (both sides can transmit simultaneously).
Data in UART is transmitted in the form of frames.
The format and content of these frames is briefly described and explained..
How to transmit data using UART in STM32?
The transmitting UART is connected to a controlling data bus that sends data in a parallel form.
From this, the data will now be transmitted on the transmission line (wire) serially, bit by bit, to the receiving UART.
This, in turn, will convert the serial data into parallel for the receiving device..
What is the function of UART in STM32?
The universal synchronous/asynchronous receiver transmitter (USART/UART) offers a flexible means of full-duplex data exchange with external equipment requiring an industry standard NRZ asynchronous serial data format.
USART can operate with a very wide range of baud rates using a programmable baud rate generator..
- Embedded systems, microcontrollers, and computers mostly use UART as a form of device-to-device hardware communication protocol.
Among the available communication protocols, UART uses only two wires for its transmitting and receiving ends.