lorawan 2部分：如何使用微芯片的模塊，速度的物聯(lián)網(wǎng)設(shè)計(jì)

　　編者按：在這個(gè)系列的1部分，LoRaWAN 1部分：如何獲得15公里和10年的電池壽命的無(wú)線物聯(lián)網(wǎng)，我們看著LoRaWAN滿足長(zhǎng)期需求的能力，低功耗的物聯(lián)網(wǎng)通信。在2部分，我們將展示如何開(kāi)發(fā)人員可以使用一個(gè)基于微芯片技術(shù)2903架盒來(lái)實(shí)現(xiàn)lorawan物聯(lián)網(wǎng)中的應(yīng)用。

　　lorawan提供性能特點(diǎn)適合于物聯(lián)網(wǎng)的需求。除了擴(kuò)展經(jīng)營(yíng)范圍和低功耗的要求，LoRaWAN提供了安全、靈活的通信選項(xiàng)。然而，硬件和軟件需要實(shí)現(xiàn)一個(gè)lorawan溶液可以證明開(kāi)發(fā)團(tuán)隊(duì)專(zhuān)注于物聯(lián)網(wǎng)應(yīng)用的一個(gè)主要障礙。

　　本文將詳細(xì)闡述微芯片技術(shù)的2903 LoRa模塊介紹部分1，并展示了如何使用它來(lái)實(shí)現(xiàn)一個(gè)遠(yuǎn)程的一些額外的硬件和軟件的低功耗設(shè)計(jì)，物聯(lián)網(wǎng)。

　　Quick-start kits

　　Microchip Technology‘s RN2903 LoRa module is a near drop-in LoRaWAN hardware solution for an IoT design. Even so， it remains only the cornerstone of a complete LoRaWAN network， and developers must still account for support hardware and software systems. Microchip addresses this need with a comprehensive evaluation kit that provides the additional elements needed to implement LoRaWAN for the IoT.

　　As mentioned in Part 1， Microchip Technology’s RN2903 supports LoRaWAN-compatible communications at 915 MHz and is designed to simplify development of IoT applications. Fully certified， the Microchip module includes all of the components required to implement LoRaWAN connectivity （Figure 1）。 The module’s command processor uses the onboard LoRaWAN firmware to fully support the LoRaWAN Class A protocol. The onboard EEPROM provides storage for LoRaWAN configuration parameters， enhancing performance and increasing security by reducing data transfers between the host and module.