This video contains examples in C and Assembly implementation for the PIC12F675 and PIC16F628A microcontrollers, which demonstrate how to execute an action upon the press of a button (push button) by using interrupt setup. More details:
Using interrupts instead of polling (active querying) in applications with microcontrollers offers several advantages, especially in terms of system efficiency and performance.
- Energy Efficiency: Interrupts allow the microcontroller to enter a low-power mode and only wake up in response to a specific event. This is particularly useful in battery-powered applications, as it extends battery life. In contrast, polling requires the microcontroller to be constantly active and checking the status of a device or condition, consuming more energy.
- Better Processor Utilization: With the use of interrupts, the microcontroller can dedicate itself to performing other tasks instead of spending CPU cycles continuously checking a condition. When a specific condition is met (e.g., an input signal is received), the interrupt signals the microcontroller to handle the event, thereby optimizing processor use.
- Faster Response Time: Interrupts provide a quicker response time to external events, as the microcontroller can immediately react to an interrupt. In systems that use polling, there can be a significant delay between the time an event occurs and when it is detected, depending on the polling frequency.
- Code Simplification: Interrupt-based programming can lead to simpler and more manageable code, especially in complex systems where multiple events need to be monitored. This contrasts with the polling approach, where the code to constantly check various conditions can become complex and difficult to maintain.
- Improved Concurrency: Interrupts facilitate the implementation of concurrent systems, allowing the microcontroller to respond to multiple types of events without the need to rigidly sequence them, as is the case with polling.
See also:
#pic12f675 #pic16f628a #interrupt #microchip #assembly
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