Скачать или смотреть Embedded Firmware for Beginners Part 6 — Using Interrupts and NVIC in Microcontrollers

“Embedded Firmware for Beginners Part 6 — Using Interrupts and NVIC in Microcontrollers” 👇

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Interrupts let your microcontroller react instantly to important events — without wasting CPU time.
Instead of polling, the CPU can sleep or do other work, and when an external signal or peripheral event occurs, an interrupt triggers automatically.

The NVIC — Nested Vectored Interrupt Controller — handles interrupt priority, enabling or disabling specific sources, and supports nested interrupts for critical tasks.

To use interrupts:
1️⃣ Enable the interrupt in the peripheral.
2️⃣ Register the ISR (Interrupt Service Routine).
3️⃣ Configure priority in NVIC.
4️⃣ Clear the interrupt flag inside ISR before returning.

Mastering interrupts makes your firmware faster, more efficient, and real-time ready.

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