Detailed explanation of TIM timed interrupt in STM32
A TIM timed interrupt in STM32 (using a general-purpose timer ) is one of the most powerful features in real-time embedded systems. It allows the microcontroller to perform specific tasks at precise time intervals, independent of main code execution . What Is a TIM Timed Interrupt? A TIM interrupt is an event triggered by a timer peripheral (e.g., TIM2 , TIM3 , etc.) when it counts to a specified value . You can configure this to fire periodically, for example, every 1 ms or every 1 second . Use Cases Blinking LEDs at a fixed rate Running a real-time scheduler Sampling sensors at fixed intervals Generating PWM signals (with interrupts) Key Registers in TIM Register Role PSC Prescaler (divides timer clock) ARR Auto-reload register (sets period) CNT Current counter value DIER Interrupt enable register SR Status register (flags) CR1 Control register (start/stop) Basic Timing Formula To generate an interrupt every T seconds : ini ...