Initial commit.
Refactored usb-i2c functions.
Cleaned up headers.
Added function usb_i2c_write_byte_data as part of shaving the yak called:
adding waking up the sensor when sleeping.
tsl2561.[c|h]: disambiguation of defines
usb-i2c.c: changed comment
Cleanup.
Fix bug: when ch0 and ch0 were 0, sensor values would not be output. Got stuck in wake loop.
Added function: usb_i2c_read_reg_data.
Renamed function: usb_i2c_write_byte_data to usb_i2c_write_reg_data.
Moved sensor command source files to subdirectory.
Added scripts and crontab file to repo.