Arduino Serial Library Reference
I have been reading up a couple of days now about pointers, references and dereferences in C/C++ targeted for the Arduino and can't fully udnerstand what I am missing.
Jul 23, 2019 Arduino Library to gets the Manufacture Serial Number from the Atmel AVR, SAM, SAMD, STM32, and ESP Microcontroller. ricaun/ArduinoUniqueID. Arduino Library to gets the Manufacture Serial Number from the Atmel AVR, SAM, SAMD, STM32, and ESP Microcontroller. ricaun/ArduinoUniqueID. Reference Include Library # include. In another Arduino Library, there is reference to Serial2 #define mySerial Serial2 but in the esp32 code, there is no reference to such serial. This very well could be from lack of programming skills, but I am having an issue. The SoftwareSerial library has been developed to allow serial communication on other digital pins of the Arduino, using software to replicate the functionality (hence the name 'SoftwareSerial '). It is possible to have multiple software serial ports with speeds up to 115200 bps. An Arduino library for serial logging. Looper: Proto-scheduler based on the use of millis losant-mqtt-arduino: MQTT library to easily communicate with the Losant IoT platform. Low-Power: Lightweight power management library: LPD6803 RGB Pixels: Controlling library for strands of LPD6803 LED pixel dots.
I have my sketch which has a setup of
The Arduino board's serial or USB connection and on digital pins 0 (RX) and 1 (TX). Thus, if you use these functions. To use an existing library in a sketch, go to the Sketch menu, choose 'Import Library', and pick from the libraries available. The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike. The Arduino Leonardo board uses Serial1 to communicate via TTL (5V) serial on pins 0 (RX) and 1 (TX). Serial is reserved for USB CDC communication. For more information, refer to the Leonardo getting started page and hardware page.
I use a wrapper class to send BYTE's over Serial1 by calling a simple function like getStatus().
The issue I am having is I would like to make my class more dynamic, so I would like my class to use Serial1, Serial2, Serial3 or even the base Serial - but I do not know how to build my .h and .cpp files to use these as references.
At the moment my class has a static Serial1 but if somebody would like to use my class they would have to rename everything to Serial if they use Arduino Uno.
In myclass.h I have something like
and in myClass.cpp (constructor):
But the compiler keeps on moaning about ) expected before & or *.
I have tried various ways and always get the same error- except when I reference my class to the Serial object-- but it says Serial was not defined.
I can't find any tutorials, except Pointer Resource for Arduino.
Declaration and Creation
Usage
Which is exactly what I want - but it seems I do not understand it. I did what they did there, and it does not work for me.
EDIT 1
Thanks, I did it the reference way because it is better yet. I still get these errors, though:
Line 88 from .h:
Line 136 from .h (this keeps on happening- I don't know what to use, Serial.write? / Serial?):
Reference Books
EDIT 2
So, basically because I import the HardWareserial.h file in file myClass.h which is imported in my sketch to use all myClasses stuff - it kills the references in the sketch and wants me to redefine the Serial instances. It seems like the inheritance is the wrong way around…annoying. What's the default constructor used in the sketch?
It's like it's asking me to do this:
Really? Again I don't understand..
Jonathan Leffler3 Answers
You're mixing C++ references and pointers. It looks from that example snippet that you should be using pointers, so I have made my answer follow that style. References would probably be a better choice though.
Your code should look something like this:
myclass.h
myclass.cpp
Arduino Serial Library Reference Guide
calling code:
If you wanted to do it as references it would look something like this:
myclass.h
myclass.cpp
calling code:
Matthew MurdochOn the Arduino Leonardo, I believe Serial is not actually an instance of HardwareSerial, but rather of Serial_, due to it being a virtual USB link and not a normal USART.
However, both of these classes are subclasses of Stream.
So maybe you can declare Stream* instead of HardwareSerial*.
I have one improvement on Mr Murdoch's code (thanks a lot by the way, following your example on how to initialize a serial object made me a happier, less compiler frustrated individual).
His method will let you pass any hardware serial object to his class.Mine by default will let you pass (and configure) a hardware object to the class, but will also let you switch in a software serial object later if you are interested.
Almost the exact same as his code, except I replace his instance of the HardwareSerial object in his class with the Stream object.
myclass.h
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myclass.cpp
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