開發(fā)工具包加速亞千兆赫項目

　　德克薩斯儀器CC1110迷你開發(fā)工具包是一種價格低廉、功能齊全的開發(fā)工具包，提供了一個低功耗的sub-GHz開始快速（868至915兆赫）的無線項目。

　　CC1110迷你開發(fā)工具包（見圖1）是專為無線報警和安全系統(tǒng)的快速原型、工業(yè)監(jiān)控應用中，無線傳感器網絡。該套件包括兩smartrfcc1110-868靶板；一個轉換板和電纜CC調試器；的評估版本ew8051 IAR嵌入式工作臺；和一個PCB天線預先ETSI和FCC標準。用戶手冊甚至建議您可以通過切換電阻器的位置來添加自己的外部天線。使用附帶的源代碼和格伯的文件，很容易將這些板轉化為現(xiàn)實世界的應用，其中德克薩斯儀器顯然已經認真考慮。

　　本文將研究測試板的操作和性能，以及進行范圍測試，這產生了一些令人吃驚的結果。

　　Getting Started

　　The kit comes with two boards pre-programmed with a test link that operates at 868.3 MHz using GFSK modulation at a bit rate of 2.4 kbps. The link test establishes point-to-point communication between the master and slave mode using TI‘s SimpliciTI protocol.

　　To run the link test， after powering up each board， press the master button on one board and the slave button on the other. Each board contains red and green LEDs， with the blinking pattern indicating their status. Within a few minutes of opening the box， the link test was up and running. Once the link is established， the master sends packets to the slave and waits 250 ms for acknowledgment. The slave remains in receive mode except to transmit acknowledgement packets back to the master. The whole cycle with the preprogrammed link test takes about 1.3 seconds， though the data rate， timing， and power can all be changed by recompiling the source code and reflashing the chip. TI provides the full source code for this application， which developers can easily modify using the IAR Embedded Workbench and the CC debugger， both of which are included with the kit. Reflashing requires downloading the SmartRF Flash Programmer and testing requires the SmartRF Studio. Both are free.