![]() ![]() I gather you want to update if it's out by. You might have to put the while != statements outside the other while statement to make it work right. Serial.println("no client connected, retrying") So weve printed to the serial monitor, weve updated the time, and now we exit the if statement and go right back into the loop. ![]() I guess what that means is that I need it to NOT finish the execution of the remainder of whats in the While loop and immediately exit in real time response to an input going from high to low. To be able to execute the program only once you should put all the code that you want to execute only once in void setup(). I have a program where its very important to exit a while loop program containing a pile of sub for loops immediately as a digital input goes low. When starting the program the part of the void setup() will execute only once, but the part of the void loop() will execute indefinite. Serial.println(thermocouple.readInternal()) In arduino the code dont execute in a linear way, it goes in a loop way. if the command is exit, just terminate the self-defined function. inside the while () loop, use a code to check command. change all delay () function by using while () loop and millis () function. Please have a look and it would be great to have advice, thank you! #include Īdafruit_MAX31855 thermocouple(MAXCLK, MAXCS, MAXDO) ĭouble temp = thermocouple.readCelsius() I would like to recommend the following way: put all code inside 'if statement' to a self-defined function. My android app stops the reading in the app but cannot break the while loop in the arduino code. The value, -5, inside the if statement used for breaking is the value sent from my android app when i press an Off button from my android app. But when my android app sends a value of 10(1 second), 100(5 seconds) or 200 (10 seconds), the while loop keeps looping despite placing a break inside the while loop. Right now my progress is only to display the temperature onto my android app. The break keyword causes the program to exit the loop immediately. Serial.Hi everybody, I am currently doing a temperature data logger using my android app to control the arduino yun via WiFi. You can make the program exit a loop even while the condition is true with the break keyword. Send the temperature, or send a simple message I know the below code is not even close for what I am looking for: void loop() Do that too many times and the whole thing crashes. It also causes a recursion in your code, you're calling loop before the previous call to loop has finished. You can't return the value of a function that returns nothing. How can I write the code so that it will check in every loop whether there is any command from the PC or not? return loop() That line is pretty useless. The common use of a while loop in Arduino includes sensor testing, calibration (calibrating the input of sensor. The while loop will never exit until the tested condition is changed or made to stop. My requirement is that the Arduino will send sensor data after getting a command from the PC side and will keep sending for 20 times, but in this meantime, if new command comes, it will stop sending the sensor data, will read the command and then start once again to send the sensor data 20 times. The while loop () is the conditional loop that continues to execute the code inside the parentheses until the specified condition becomes false. What I mean is that if after sending 5 sensor data, the Arduino sees that there is another command from PC, it has to stop sending the sensor data it will get the new command from the PC, read it and then start sending again. ![]() Now the problem: I want the Arduino to keep sending the data (current sensor data - so it will may change in value), suppose 20 times if there is no command from the PC side. The Arduino side will get the command and send sensor data. I want to send a command from the PC to the Arduino side. Background: I am using an XBee connected with a PC and a XBee + Arduino (sensor too).
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