Wise Clock 4 software for Arduino 1.6.8

Scott H. put the time and the effort to port the Wise Clock 4 code (also the HDSP-Proverb and WiFiChron code) to Arduino 1.6.8 (the latest, but maybe not the greatest). This is a big endeavor, which I did not plan to pursue any time soon. Now, thanks to Scott, here we have it. I compiled it and uploaded it myself, on Windows (he did it on Mac).

The Wise Clock 4 files are all in the same "TheClock" folder, directly under "libraries", as shown in the following screenshot.

But before uploading to ATmega1284, this section needs to be inserted in boards.txt (*):

##############################################
atmega1284.name=Sanguino W/ ATmega1284p 16mhz
atmega1284.upload.tool=avrdude
atmega1284.upload.protocol=stk500v1
atmega1284.upload.maximum_size=129024
atmega1284.upload.speed=57600
atmega1284.bootloader.low_fuses=0xFF
atmega1284.bootloader.high_fuses=0x98
atmega1284.bootloader.extended_fuses=0xFD
atmega1284.bootloader.path=atmega
atmega1284.bootloader.file=atmega1284p_16MHz.hex
atmega1284.bootloader.unlock_bits=0x3F
atmega1284.bootloader.lock_bits=0x0F
atmega1284.build.mcu=atmega1284p
atmega1284.build.f_cpu=16000000L
atmega1284.build.core=sanguino
atmega1284.build.board=AVR_ATMEGA1284

##############################################

The two highlighted lines are new for 1.6.8: "upload.tool" and "build.board" (which has a default value though).

Next, as specified in the line "atmega1284.build.core=sanguino", we need to create the folder "sanguino", containing the core files. Folder structure should look like this:

Note that a few sanguino core files that worked in Arduino 1.0.6 need to be modified to compile on 1.6.8. Like the Wise Clock 4 code itself, most of these changes are related to the PROGMEM definition, which now requires every progmem variable to be constant. The modified files are WString.* and Print.*, copies of the arduino core files.

Talking about sanguino core files, which served pretty well so far, it is worth mentioning that the current implementation for pinMode(pin, INPUT_PULLUP) (in file wiring_digital.c) is not working. Until I find a software solution, I will still need to use pull up resistors.

(*) There is a more "user friendly" way to add a new board, that involves downloading packages from a specified URL, but I found the learning curve for this method too steep (or, to say it differently, I was too lazy).