![]() I can't get the motorDown to run.Īm I stuck inside the While loop? I guess I have to use break to exit then but not sure how to use that? I tried the if (digitalRead(endStopUp) = HIGH) but that didn't work. What happens now is that when start is high the motor starts (I am using a LED for safety instead of motor for testing) and when I endStopUp gets activated the LED fades off (using tinkercad)Īfter this nothing more happens. Switching between finite and infinite for loop based on input parameters, Exit the loop when I press enter (C-programming), My C. Then just wait until "start" is low, then it should close until endStopLow is hit, then just wait until this repeats. You should write pseudocode first, just to be sure that what you want to achive is the same as what do you think you want to achive. The way it should work is that when "start" is high the motor should run until it hits the endStopUp. how to break while loop One of the ways is by using break statement (it makes sense). Now, because of the do while loop, legNumBrightness will still sometimes go to -1 and 256, but can no longer overrun past 256.I am trying to make a code that controls a linear actuator. break is used to exit from a for, while or do.while loop, bypassing the normal loop condition. So on the next visit of that legNumBrightness = 255, the increments up by one branch is taken, until it reaches 255 = 255). 6 Answers Sorted by: 46 This isn't published on but you can in fact exit from the loop routine with a simple exit (0) This will compile on pretty much any board you have in your board list. Learn break example code, reference, definition. when it is equal to 255, it decrements by one, until it is zero, and then because 0>=0 is still true (0 is equal to 0, after all), it decrements once more, so legNumBrightness is now -1. For example if the following code asks a use input a integer number x. For the sake of brevity, since all there LED branches of the switch statement are the same, I will refer to legNumBrightness instead of the individual legThreeBrightness, legFiveBrightness, legSixBrightness variables since this applies to all three (individually).īecause do while loops always run once before testing the condition, you have an issue with the value of legNumBrightness going out of bounds. The purpose the break statement is to break out of a loop early. ![]() You have two issues related to bounds checking. LegFiveBrightness = legFiveBrightness + increment LegThreeBrightness = legThreeBrightness + increment LegThreeBrightness = legThreeBrightness - increment RandLeg = random(4, 7) // pick a random leg ![]() This could be in your code, such as an incremented variable, or an external condition, such as testing a sensor. Something must change the tested variable, or the while loop will never exit. RandomSeed(analogRead(0)) // seed rand num generator Control Structure Description A while loop will loop continuously, and infinitely, until the expression inside the parenthesis, () becomes false. And what about the code after this for loop Is it able to run No. set all 3 legs to max brightness at start Its going to run for a while because it has to go through 100 iterations before it stops. You can see those lines commented out to allow for the error. Instead take a look at the BlinkWithoutDelay example in the IDE. ![]() The only way I can stop is by manually setting the value outside the loop. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to, ,, .uk, Amazon.ca,, Amazon.es and . 2 Answers Sorted by: 1 Because you're using delay () within your while loop you have to ensure that you are pressing the key at the precise moment it is read. Below is the code and the serial monitor outputs. However, sometimes it counts below 0 to -1 and sometimes it continues infinitely past 255. The brightness should count down to a brightness level of 0 and up to a level of 255. The only way to exit the loop is if the conditional expression changes - that means you have to use a variable or input pin value that allows the expression to. I did a variety of tests and eventually, using the serial monitor, found out the issue. It is working, but then I noticed the LED would sometimes flash. I am writing a simply program to change colors of a 3 color LED. Ive been staring at this for a while now and I am going cross-eyed.
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