Initializing the Microcontroller

Setting up the ATMega328 chip

 Unplug any USB Power before programming the Microcontroller. 
 Plug the USBTiny Programmer into the AVR-ISP 6 pin header J7.
 Place the jumper across J8 to use the USBTiny 5 volt power. Make sure no other power source is connected!  
 Using AVRDUDE Validate the USBTiny is communicating with the Power Fail Module Microcontroller
 
 avrdude -c usbtiny -p m328p -v
 
 The Microcontroller is set to 1HMz and needs to be changed to 16 MHz Default
 Using AVRDude enter the follow command to set the fuse bits on the Microcontroller.
 
 
 avrdude -p m328p -c usbtiny -v -U lfuse:w:0xFF:m -U hfuse:w:0xDE:m -U efuse:w:0xFF:m  
 
 Make sure it matches these settings:

 avrdude: safemode: hfuse reads as DE
 avrdude: safemode: efuse reads as FF
 avrdude: safemode: Fuses OK (E:FF, H:DE, L:FF)
 avrdude done.  Thank you.

For more information about using AVRDude refer back to this link 
 ==AVRDUDE Class==

Next step Setting up the DS3231 RTC

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