ARM lpc2148 based GPS logger. SD/MMC support.

GPS based data logger using PIC16F8-GPS based data logger using PIC16F877

設計給高端GNSS/GPS 用的原始資料紀錄器(RAW DATA)，可記錄衛星觀測資料達50HZ 以上，已於Trimbel BD-970 + Arduino + SD Shield 上面測試。-This Data logger code is used for logging high update rate GNSS/GPS engine board. It can reach 50Hz update rate on Arduino ATMEGA328+ SD Card Shield.