SerLCD.h library and feather MO issue

Components & Accessories Displays
1

I have been using the SerLCD.h library with my FIOv3, arduinos, and my feather 32u4 lora and all has been fine.

Now I have a feather MO and the example in the library will not compile for this board. Is there another library I should use with the MO to talk to the LCD?

2

I get the following error.

Arduino: 1.8.7 (Windows 10), Board: “Adafruit Feather M0 (SAMD21), Small (-Os) (standard), Arduino, Off”

C:\Users\downr\Documents\Arduino\libraries\SparkFun_SerLCD_Arduino_Library\src\SerLCD.cpp: In member function ‘virtual size_t SerLCD::write(uint8_t)’:

C:\Users\downr\Documents\Arduino\libraries\SparkFun_SerLCD_Arduino_Library\src\SerLCD.cpp:395:1: error: no return statement in function returning non-void [-Werror=return-type]

395 | } // write

| ^

cc1plus.exe: some warnings being treated as errors

exit status 1

Error compiling for board Adafruit Feather M0 (SAMD21).

This report would have more information with

“Show verbose output during compilation”

option enabled in File → Preferences.

3

I have just tried this with the SerialLCD library version 1.0.9. It compiled without errors.

In SerLCD.CPP the function shows a return for me

size_t SerLCD::write(uint8_t b)
{
  beginTransmission(); // transmit to device
  transmit(b);
  endTransmission(); //Stop transmission
  delay(10);         // wait a bit
  return 1;
} // write

If that is the case for you as well, maybe your compiler does not like the return statement try to change the last line to :

return (size_t) 1;