每天都有越来越多的产品连接到互联网。
这些产品的设计者面临的困境是如何以最低的成本轻松连接它们。
过去常见的一种方法是设计自己的RF模块，并在整个系统设计中获得认证。
如果设计未通过认证测试，您必须修改您所拥有的内容，以尝试纠正认证测试中发现的问题，并将其重新发送回认证，直至最终通过。
此认证的成本可达10,000美元或更多，最多需要六周时间才能完成。
但设计自己的RF模块的另一方面是，您可以在下一个产品中重复使用它，并大大减少您的总体设计时间和认证成本。
CYBLE-222014-EVAL板
设计师可以采取的另一个途径是使用预先认证的RF模块是他们的设计。
使用这些模块的好处包括快速的设计集成时间，更快的上市时间以及RF认证测试失败的零风险。
使用模块通常所述的缺点之一是它们的单位成本高于从头设计的成本。
但是，如果计算工程时间和认证的成本，则在所有情况下可能并非如此。
将RF模块放入产品的主要原因是将其连接到某种网络并最终连接到物联网（IoT）。
根据产品的不同，可以使用各种协议来建立连接，例如ZigBee，WiFi和蓝牙。
其中一个更有趣的协议是蓝牙。
过去，蓝牙主要是将设备链接到终端（例如，将耳机连接到蜂窝电话）的点对点连接。
最近，一些制造商利用蓝牙连接创建了专有的网状网络功能（参见蓝牙®将其网状网络带入物联网），下一版蓝牙协议将在其规范中添加网状网络。
目前，蓝牙4.2允许通过使用蓝牙IPv6进行直接互联网访问，以支持连接的家庭以及其他物联网应用程序。
蓝牙正在成为所有低功耗网络需求的首选协议。
蓝牙模块，例如赛普拉斯EZ-BLE™PRoC™蓝牙4.2模块，为设计人员提供了一种简单的方法来增加其产品的连接性。
该模块经过全面认证，包括板载晶体振荡器，芯片天线和与蓝牙4.2兼容的免版税BLE堆栈。
它还通过其可编程架构支持一些外设功能，如ADC，定时器，计数器和PWM以及一些通信协议，包括I2C，UART和SPI。
为了进一步帮助设计人员评估和开发应用，赛普拉斯提供了一个评估板CYBLE-222014-EVAL
CYBLE-222014-EVAL可以使用蓝牙低功耗先驱套件CY8CKIT-042-BLE-A或MiniProg3调试套件CY8CKIT-002和PSoC Creator进行编程和开发。
使用所有这些工具，可以大大减少设计的上市时间，从而大大降低总体开发成本 - 节省时间和金钱。
使用预先认证的模块进行RF设计可以节省大量的设计时间和认证难度。
考虑到这一点以及有许多工具可用于辅助模块的设计和开发过程，应该认真考虑将RF模块结合到您的下一个连接设计中。
以上来自于谷歌翻译
以下为原文
More and more products are connecting to the internet every day. The dilemma the designers of these products face is how to get them connected easily and for the lowest cost.
One method that used to be common practice is to design your own RF module and get it certified in the complete system design. If the design fails the certification testing, you have to modify what you have in an attempt to correct the problems found by the certification testing and send it back for certification again until it finally passes. The cost of this certification can run $10,000 or more and take up to six weeks to complete. But the plus side of designing your own RF module is that you can reuse it in the next product you design and dramatically reduce both your overall design time and the certification costs.
![]() The CYBLE-222014-EVAL Board
Another avenue a designer could take is to use a pre-certified RF module is their design. The benefits of using these modules include fast design integration time, a faster time to market, and a zero risk of failing RF certification testing. One of the drawbacks usually stated for using modules is that they have a higher cost per unit than those that are designed from scratch. However, if the costs of engineering time and certification are figured in, this may not be the case in all instances.
The main reason an RF module is put into a product is to get it connected to a network of some sort and ultimately to the Internet of Things (IoT). Depending on what the product is, there are a variety of protocols one can use to establish this connectivity such as ZigBee, WiFi, and Bluetooth.
One of the more interesting protocols is Bluetooth. In the past, Bluetooth was mainly a point-to-point connection which linked devices to a terminal (e.g., connecting headphones to a cell phone). Recently, some manufacturers have created proprietary mesh networking capabilities utilizing Bluetooth connectivity (see Bluetooth® Brings Its Mesh Networking to the Internet of Things), and the next version of the Bluetooth protocol will be adding mesh networking to its specifications. Right now, Bluetooth 4.2 allows direct internet access by using Bluetooth over IPv6 to support the connected home along with other IoT applications. Bluetooth is on its way to being the go-to protocol for all low-power networking needs.
Bluetooth modules, such the Cypress EZ-BLE™ PRoC™ Bluetooth 4.2 Module, offer designers an easy way to add connectivity to their products. This module is fully certified and includes onboard crystal oscillators, a chip antenna, and a royalty-free BLE stack compatible with Bluetooth 4.2. It also supports some peripheral functions like ADCs, timers, counters, and PWM along with some communication protocols including I2C, UART, and SPI through its programmable architecture.
To further help designers evaluate and develop applications, Cypress offers an evaluation board, the CYBLE-222014-EVAL
The CYBLE-222014-EVAL can be programmed and developed with the Bluetooth low energy pioneer kit, CY8CKIT-042-BLE-A, or the MiniProg3 debug kit CY8CKIT-002 and PSoC Creator. With all of these tools, a design’s time to market, and thus overall development cost, can be greatly reduced – saving both time and money.
Using pre-certified modules for your RF design can save a lot of design time and certification headaches. Considering this and the fact that there are many tools available to aid with the design and development process with modules, serious consideration should be given to incorporating RF modules into your next connected design.
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