在許多物聯網應用中，設計者越來越需要能夠在較長的范圍內工作，但功耗更低的設備。通常情況下，這將需要匹配的低功耗單片機收發器并發展合適的協議棧。幸運的是，新的解決方案大大減少甚至消除了額外的工作，加快了上市時間，降低了成本。

　　山姆R30從微芯片技術是一個解決方案，消除了這些詳細的開發步驟的單一封裝中提供MCU和收發器的優化整合的一個例子。用于微芯片的MIWI協議棧結合，山姆R30提供解決方案的低功耗近滴，遠程無線物聯網設計。

　　本文將討論山姆R30的關鍵屬性和開發者如何啟動和運行它，快。

　　Long-range IoT challenges

　　Long-range applications go well beyond those supported with more common wireless technologies such as Bluetooth or Wi-Fi. Also， these deployments carry a related requirement for multi-year battery life due to physical placement constraints or limited maintenance capabilities.

　　MCUs based on the 32-bit， ARM? Cortex?-M0+ core are typically relied upon to address the processing end of applications due to their combination of low power and high performance. By pairing these MCUs with sub-GHz transceivers， developers can create a solid foundation for IoT designs capable of operating over much longer ranges than practical with 2.5 GHz Bluetooth or Wi-Fi devices. For developers， however， integrating these devices into a low-power， long-range wireless solution can present multiple challenges.

　　At the hardware level， engineers must deal with sources of interference， such as switching noise， while maximizing processor performance and transceiver power output. In creating suitable software， engineers can also find themselves forced to develop low-level hardware abstraction layers needed for device support， protocol stacks， and IoT services.