HAPSIM - Helmi's AVR Periphery Simulator V2.06
http://www.helmix.at/hapsimFeatures:
supports Atmel AVR Studio 4, Version 4.09 up to Version 4.12.456.
AVR Studio Version 4.11.404 or higher strongly recommended!
simultaniously simulates one or more of each of the following components:
HD44780U compatible LC-Display with up to 40 x 2 characters.
Pushbuttons connected to Input Port Pins.
LEDs connected to Output Port Pins.
Terminal connected to USART, UART or TWI(I2C) ports.
4x4 Matrix Keypad.
easy configuration of the components.
configuration files are stored in future-save XML format.
target device selection with all devices supported by the AVR Simulator