/***
 * ---------------------------------------------
 *   Arduino LCD KeyPad Shield (SKU: DFR0009)
 * ---------------------------------------------
 *  - Button            : a0  -> PTB0
 *                           right  : < 0x0100
 *                           up     : < 0x5400
 *                           down   : < 0xa500
 *                           left   : < 0xfd00
 *                           select : ???
 * ---------------------------------------------
 *  - DB4               : d4  -> PTA4
 *  - DB5               : d5  -> PTA5
 *  - DB6               : d6  -> PTC8
 *  - DB7               : d7  -> PTC9
 *  - RS                : d8  -> PTA13
 *  - Enable            : d9  -> PTD5
 *  - Backlight Control : d10 -> PTD0
 * ---------------------------------------------
 *  - http://www.dfrobot.com/wiki/index.php/Arduino_LCD_KeyPad_Shield_(SKU:_DFR0009)
 *  - http://www.dfrobot.com/index.php?route=product/product&keyword=DFR0009&category_id=0&description=1&model=1&product_id=51
 *  - http://www.amazon.co.jp/dp/B00ACCN148
 *  - http://akizukidenshi.com/catalog/g/gM-07029/
***/