h library.properties, keywords.txt, /examples/*.* files) into the folder. To install the library, first quit the Arduino applicationĬopy the components of MyLib (.cpp. Paragraph=With this library you can instantiate callback function. Sentence=Libary for the Arduino Timer event shield. This method does'nt work with arduino ide 1.5.4.Ĭreate a file :"library.properties" with text below Have you seen "Installing Additional Arduino Libraries" ? Run the 'callback' once after 'period' milliseconds. Run the 'callback' every 'period' milliseconds for a total of 'repeatCount' times. Int every(long period, callback, int repeatCount) Run the 'callback' every 'period' milliseconds. The library is compatible with both Arduino 1.0 and earlier versions. If this is the first library you have installed, you will need to create a directory there called 'libraries'. You can attach up to 10 events to a timer.Īs with all libraries, unzip the file into the 'libraries' folder in your Arduino directory, which will be in something like 'My Documents\Arduino' on Windows, 'Documents/Arduino' on Mac etc. Serial.print("2 second tick: millis()=") Int afterEvent = t.after(10000, doAfter) Serial.print("2 second tick started id=") Int tickEvent = t.every(2000, doSomething) This will cause the LED to toggle state every 100 milliseconds.Įach of the events has an integer ID associated with it, so that you can stop an event, as we do in this example below, which will write to the serial monitor every 2 seconds, flash the LED and after 5 seconds, stop the LED flashing fast, and flash it 5 times slowly. We have also attached another event to the timer using the method 'oscillate'. ![]() We connect it to the Timer using the 'every' command, which in this case, will call the function every second. The first thing to notice is that we are using a callback function called 'takeReading'. One to flash an LED and another that reads A0 and displays the result in the Serial Monitor. Lets look at another example that uses two timer events. The call to t.update() will take a matter of microseconds to run, unless the appropriate period of time has passed. The 'pulse' method takes arguments of a pin to change, the period to change it for and its initial state. My 'Timer' library version looks like this: You cannot update a display, or check for key presses for example. The disadvantage of the delay approach is that nothing else can go on while the 'delay' is happening. But as soon as you get more complex and start slowing down your 'loop' function you will run into problems.Ī classic example is turning a relay on for 10 minutes. Its great for showing beginners how to make an LED flash. The Arduino 'delay' function is both a blessing and a curse. ![]() ![]() You could watch for rain, measure temperature, or water level, or all sorts of things, while the timer is running on each of many, many pumps.The library does not interfere with the built-in timers, it just uses 'millis' in a crude type of scheduler to decide when something needs doing. if say, 11 minutes and 37 seconds later, you pressed button #1, then pump #2 would shut off in 48 minutes and 23 seconds, and pump #1 would shut off in 60 minutes. While that pump us running (or not) and you press button #2, then you could have pump #2 run for one hour. You can do either with blink without delay. If you pressed it, 20 times in one minute, then one hour and one minute later, the pump would go off. Or, it looks at the last button press and then runs for one hour after the last button press. If, at any time, you press again, something happensĮither it counts to that one hour you said, and ignores new button presses I am using arduino and relay to control my pump motor.After i turning on the pump motor it should run one hour.After one hour pump should be off.What is the best way to add one hour time without using delay function
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