Setting stop bits with IDE 1.5.2 using a DUE

Projects Programming
1

I am interfacing a LCD to my DUE board using Serial1. The LCD requires 8 data bits, 2 stop bits, and no parity at 9600 baud. I have found 2 methods listed on the website that claim to be the method to set the mode properly. The first method I tried was from the Serial.begin function explaination:

Serial1.begin(9600, SERIAL_8N2);
error: 'SERIAL_8N2' was not declared in this scope

Then I found in the release notes for 1.5.2 that this method should work:

Serial1.begin(9600, 8, 2, N);
error: 'N' was not declared in this scope

I also tried:

Serial1.begin(9600, 8, 2, 'N');
error: no matching function for call to 'USARTClass::begin(int, int, int, char)'
E:\Senior Design Code\arduino-1.5.2\hardware\arduino\sam\cores\arduino/USARTClass.h:41: note: candidates are: void USARTClass::begin(uint32_t)

There is no serial library included in the 1.5.2 download. What do I need to do to make this work?

2

What do I need to do to make this work?

In the current IDE there is no support for this feature (setting the stop bits or parity). Although the hardware supports it and you can access the low level interfaces yourself to use it, the Arduino Serial or SerialX objects don't support it. Take a look at the implementation of USARTClass.cpp (or UARTClass.cpp for Serial) in hardware/arduino/sam/cores/arduino/ to see how the Arduino team implemented it. You may edit these files to add the functionality and provide the result to the Arduino team to integrate it for the next release.