![]() The available() function checks at the serial port to see if any bytes are available and returns the number of bytes. This condition implements a function called available() from the Serial library. the controller to get the ASCII value for the character. in this exmaple, though, you're using single quotes to tell The switch statement expects single number values for each case do something different depending on the character received. This example code is in the public domain. * 5 LEDs attached to digital pins 2 through 6 through 220-ohm resistors The characters a, b, c, d, and e, will turn on LEDs. To see this sketch in action, open the Serial monitor and send any character. Statement allows you to choose from among a set of discrete values The Arduino Code /*ĭemonstrates the use of a switch statement.
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