Mobilinkd TNC1 Firmware
==== To build the software, just type "make". The EEPROM section needs to be removed from the ihex file.
avr-objcopy -O ihex -R.eeprom images/mobilinkd-tnc1.elf images/mobilinkd-tnc1.hex
The hex file can then be uploaded using "avrdude -c avr109" or using the Mobilinkd Android configuration app.
The Mobilinkd TNC1 uses the XBoot++ bootloader: https://github.com/alexforencich/xboot
To build an image which includes the bootloader, build the xboot++ bootloader using the supplied xboot configuration file. Then merge the two files with srec_cat.
srec_cat xboot/xboot.hex -intel mobilinkd-tnc1/images/mobilinkd-tnc1.hex
-intel -o mobilinkd-tnc1/images/mobilinkd-boot.hex -intel
The output file, mobilinkd-boot.hex, can then be uploaded via the ISP port on the board using an ISP programmer such as the USBASP v2.0. This is the programmer that I use, along with a custom cable with pogo pins.
==== Instructions for building the hardware are at http://www.mobilinkd.com/2014/09/11/arduino-kiss-tnc/