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Review the pin name constants defined in pins_butterfly.h to ensure the
relationship between the names and the referenced pins are correct, and
that each name works as expected when used with Arduino functions.

Convert existing EEPROM code from GCC port of Butterfly application to
Arduino library format and expand to give better control to user.

Make necessary changes to make it work with v22 of the Arduino IDE

The delayMicroseconds function assumes that the system clock will be either
16 or 8MHz. Investigate updating this function to work well with any
setting of F_CPU, including unusual frequencies achievable through the
combination of the clock prescaler and the oscillator calibration.

Where possible calculations necessary to set up the delay should be
performed at compile time.

What steps will reproduce the problem?
1. copy the hardware folder to the arduino software
2. start

What is the expected output? What do you see instead?
butterfly_temp.cpp: In member function 'int TempSensor::getTemp(int)':
butterfly_temp.cpp:59: error: 'TEMP' was not declared in this scope


What version of the product are you using? On what operating system?
windows xp
I tried arduino version 12 and 13

The Arduino core does not operate below 1MHz. The system seems to be built
with the assumption of a minimum of one clock cycle per microsecond:

#define clockCyclesPerMicrosecond() ( F_CPU / 1000000L ) 

Review the Butteruino core files to determine how extensive modifications
to operate below 1Mhz would be and how such modifications would impact
existing libraries.

The butterfly-specific libraries are currently all in the
libraries\butterfly directory. When adding the butterfly library to a
sketch all of the libraries are added.

Reorganize the directories to move each library into it's own directory.

The Butterfly can be configured to use very little power. In the Butterfly
wiring init ensure that the Butterfly is configured for minimal power
consumption. In each library enable devices as necessary but make an effort
to keep power consumption to a minimum.

The names defined in pins_butterfly.h likely have overlap with the names
defined in iom169.h. Review the file and trim out unnecessary names.
Comments regarding existing names may be left as documentation for developers.

Check the Butterfly LCD setup. The LCD has indicators along the top and
bottom that may be connected but that the current LCD driver does not use.

The butterfly resets when the joystick center or up buttons are used, or
when those inputs are toggled via code.

Keywords.txt has not been updated for some of the libraries.

Martin Thomas has published an 'AVRProg compatible bootloader for ATMEL
ATmega Controllers'. Review this for inclusion as an optional Butteruino
component for improved upload compatibility with the Arduino IDE.

The LCD driver does not check input to verify that it will not overrun the
internal buffer.

Timer2RTC is currently set up as a namespace. This requires the user to use
'::' instead of '.' when referring to the library functions. This is
probably confusing. Update the library to use a static class instead.

A dataflash driver is required.

Consider ways to give Arduino users easy but efficient use of the dataflash.