Issues compiling with TimerOne.h

[Andrew E]

Hi,
I am using the 'myFFP2_DRV8825_321 package' of files and have downloaded TimerOne.h from the provided link. During compilation, I get errors like:

In function TimerOne::setPeriod(unsigned long)':
undefined reference to TimerOne::clockSelectBits'
undefined reference to TimerOne::pwmPeriod'

In function TimerOne::attachInterrupt(void ()())':
undefined reference to TimerOne::isrCallback'

I am more mechanically inclined and so have struggled with the software side. The best I can see is that it is an issue of compiling between C++ and C code. Some internet suggestions are to include this:

In the header file, before any function declarations, add:

#ifdef __cplusplus
 extern "C" {
#endif

After all function declarations, add:

#ifdef __cplusplus
}
#endif

I have tried to add this code in different areas but it has not solved the issue - I'm not even sure it is in the right place. Has anyone come across this or is there a global setting to correct this?

I am using Arduino 1.8.13.

Your assistance is appreciated.

Thank you

[brownrb]

Hi Andrew

version 321 is obsolete
please download firmware version 328
https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/ARDUINO%20FIRMWARE/Firmware_myFP2_328.zip/download

You need to install the TimerOne library
Location:
https://github.com/PaulStoffregen/TimerOne

Then start the Arduino IDE
Use the menu option
Sketch
Include Libary
Add .ZIP

Navigate to where the timerone libray was downloaded.
Select the file
Click Open

Next, using menu for Arduino IDE
File
Preferences
Set compiler warnings to default.

The 1.8.14 is pretty old. You should consider updating the Arduino IDE

Regards
Robert

[Andrew E]

Hi Robert,

Thank you for highlighting how far behind I was in the project! I downloaded the files a while ago and got busy with other things.

I updated all the software and followed your instructions. All good now. I will test the hardware in time.

Best regards,
Andrew