However, it appears that you can define an auto with global scope, and the definition must have an initializer list.But I have a really hard time finding out what Serial even is.
Arduino Stream Class Serial A ClassIs serial a class with static methods or is it actually an instance Im not too familiar with C.In the end Id like to have two variables ComputerSerial and BluetoothSerial.And Id like to be able to set those variables to either a hardware Serial or a SoftwareSerial. Arduino Stream Class Code And TheAnd if I ever device to switch a serial connection from hardware to softawre or the other way around, I just need to change the first two lines of the code and the rest can stay the same. But Im experiencing very weird behavior with this that I cannot explain. For example the output of this code: Code: Select void setup() ComputerSerial.begin(115200); ComputerSerial.println(test); It only prints te. I havent tried it on my Arduino, but I did it on a desktop program with ints and it worked. Code: Select include include using namespace std; int main(int argc, char argv) int alpha 5; auto bravo alpha; cout bravo 10; cout return 0; Output: Code: Select alpha before reassignment: 5 alpha after reassignment: 10. Well done. You were going to do that anyway inside the functions which take a Stream pointer. Function arguments can use the same technique: Code: Select void foo( Stream stream ) if (stream.available()). Cheers, dev. When you do: Code: Select auto ComputerSerial Serial; The compiler creates a reference of the same type as the Serial object. You dont need to tell it what type it is, since the compiler will already know. If you change it to a reference to a SoftwareSerial, it will create a reference to a SoftwareSerial object the next time you compile it. You can use a pointer for this, but since you are not doing any pointer arithmetic (ie. You dont need to remember to dereference it or use that - thing. Is it save to provide other Arduino users with C11 code yet or is C11 support a very recent change in the software. But you can make a pointer to it.. You are correct that functions which accept a pointer to a serial object should use the Stream class. Is it save to provide other Arduino users with C11 code yet or is C11 support a very recent change in the software It works in 1.6.9, I dont know how much farther back it goes since Ive been away from Arduino for a while. I turned on verbose compile output and it shows the flag -stdgnu11.
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