#Switch case arduino serial read how to#
#Switch case arduino serial read code#

When I trigger the LED lights up for three seconds, off for a second thenīack on, which indicates that it is succesfully running mode-2 then switching to mode-6 with no problems, however the LED does not turn off when I press the switch attached to the StopPin, which indicates to me that it is not switching to Mode-7. I have an LED attached to the FeedPin at the moment.

' I have two variables chapter, verse which will be selected by the. When the (buttonState = HIGH) it does not switch the case to (mode = 7), turning the pin to low and returning the mode to 0. Hi, I have already gone through But could not get the solution as the final solution in the above post was actually not using switch inside another switch statement as you said Here's a massively simplified version - no nested switch/case constructs, no Strings, massively reduced memory consumption, no memory corruption. Ok, reformatted - anyway, here is the problem. if (buttonState = HIGH) // If Pin is high light the TestLEDĬase 5: // Reset all variables and go to wait modeĬase 6: // Run Motor until Interupt from StopPin

#Switch case arduino serial read code#

I know the wiring to the button/Test LED is right as I have tested it with the bit of code greyed out. Preferably only whilst (mode = 6) is running. I want to be able to switch the mode to (mode = 5) when the button attached to 'StopPin' is pressed.

#Switch case arduino serial read how to#

Hope this has helped you understand what switch case statements are and how to use them when programming the Arduino.I am trying to get a digitalRead/Write statement to switch the mode within my Switch/Case loop. So the code inside the default statement prints out “Sensor error” to the serial monitor. For instance, if none of the case statements are executed there could be something wrong with the sensor. The default statement will be executed if none of the case statements match the switch condition. The switch case statement ends with a default statement. It prevents the program from checking all of the other case statements against the switch condition after it has found a match. The break keyword makes the program exit the switch statement after the case statement has been executed. If temp equals three, case 3 will be executed and “Temperature is high” will be printed to the serial monitor.Įach case statement ends with the break keyword.

For example if temp equals two, case 2 will be executed and “Temperature is medium” will be printed to the serial monitor. If the value stored in the variable matches the case number, the code inside the body of the case statement will be executed. The switch statement looks at the variable inside the parentheses ( temp) and compares it to each one of the case statements.

These numbers represent the low, medium, and high temperature ranges, respectively. Next we use temp = temp / 341 to convert the value stored in temp to either one, two, or three. The value will be between, depending on the temperature it measures. A switch statement compares a particular value of a variable with. The Arduino will take a reading from the thermistorPin and store the value in the temp variable. The switch case controls the flow of the program by executing the code in various cases. In the loop() section, we declare a variable called temp to store the analog read value from the thermistorPin.

Analog pins are assumed to be inputs so we don’t need to use the pinMode() function here. In the setup() section, we initialize the serial monitor. This sketch will take a reading from a temperature sensor and print low, medium, or high to the serial monitor depending on the temperature reading: const int thermistorPin = A0 Īt the top of the sketch we declare a pin variable called thermistorPin and set it equal to analog pin A0. Let’s take a look at an example sketch to understand this better. It includes all of the parts, wiring diagrams, code, and step-by-step instructions for 58 different robotics and internet of things projects that are super fun to build! The 3-in-1 Smart Car and IOT Learning Kit from SunFounder has everything you need to learn how to master the Arduino.