Скачать или смотреть UART Interview Questions Part 11: What are UART interrupts and how are they used?

UART Interview Questions Part 11: What are UART interrupts and how are they used?

UART interrupts are hardware signals generated when specific UART events occur. They eliminate the need for constant polling and allow the CPU to focus on other tasks until UART needs attention.

The main types of UART interrupts are:
• Receive Data Available (RX interrupt): Triggered when new data arrives in the receive buffer.
• Transmit Buffer Empty (TX interrupt): Triggered when the buffer is ready for more data.
• Error Interrupts: Triggered when parity, framing, or overrun errors occur.

They are used to handle data efficiently, improve real-time communication, manage buffers, and detect errors promptly. In practice, an Interrupt Service Routine (ISR) is written to respond to these events, ensuring smooth and reliable UART communication.

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