How does the processor know to get the required information from the external system?
An interrupt is an external or internal event that interrupts the
microcontroller to inform it that a device needs its service.
Interrupts vs. Polling
• A single microcontroller can serve several devices.
That are two ways to do that: interrupts or polling.
• The program which is associated with the interrupt is called the interrupt service routine (ISR) or interrupt handler
When designing active filter for your project you will need software tools to help you get right component values as well as minimize time spent designing. Tool that will hel you automate this process is FilterLab from microchip.
FilterLab® is an innovative software tool that simplifies active filter design. Available at no cost, the FilterLab® active filter software design tool provides full schematic diagrams of the filter circuit with component values and displays the frequency response.
The Electronic Industries Association (EIA), and other authorities, specify standard values for resistors, sometimes referred to as the "preferred value" system. The preferred value system has its origins in the early years of the last century at a time when most resistors were carbon-graphite with relatively poor manufacturing tolerances.
Often you will need to filter signal to adjust it for ADC measurement or remove noise from measured signal. Analog filters are right way to do this. Here is some basic information about analog filter design terms used when designing filters. Active filters give better performance since they can be adjusted not to attenuate signal.
Here are places useful advices related to hardware. These are all text that are product of many years of experience in work with electronics. You could also call this section of www.electronics-base.com tips and tricks. If you read it you will definitely not be sorry because it will save you much time in later debugging errors you could have avoided.
Here are places useful advices related to software and firmware. These are all texts that are product of many years of experience in work with electronics. You could also call this section of www.electronics-base.com tips and tricks. If you read it you will definitely not be sorry because it will save you much time in later debugging errors you could have avoided.
Analog filter design
In every signal measurement you must condition signal first for correct measurement. This is done by using analog filters. Here you will find complete guide step by step of how to design analog part of your project and get best results. In easy way you will be able to do this job like a pro.