AvrPhone is a simple mobile phone with touchscreen. His brain is AVR ATmega128 microcontroller (128 kB flash, 4 kB SRAM) and user interface, the 2.4 “LCD display with touch foil and ILI9325B controller, equipped with a 16-bit bus. The communication with the old GSM module SIM100Sčísnkého SIMCom manufacturer. The entire system is powered by a 3.7 V/1000 mAh Li-Pol article.
This page is intended to present the phone and publication schemes and some interesting parts of the source code. Detailed information about the hardware can be found in the work Mobile phone touch screen for SOC 2011 (download here – PDF, 13 MB).
Schematic power section: http://dir.adamh.cz/avr-phone/images/schematic_power.png
Diagram of the MCU: http://dir.adamh.cz/avr-phone/images/schematic_avr.png
Diagram of a GSM module: http://dir.adamh.cz/avr-phone/images/schematic_sim100s.png
Testing for solder field
For more detail: AvrPhone using ATmega128 microcontroller