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请问是什么应用?为啥不用 CC2530/CC2538 + CC2592的方案。 一定要 Sub-1GHz 来保证距离吗?可以用 CC1120 + MSP430 6LowPAN的方案。
MSP430 + CC1120/CC1101可以实现调频(FHSS)星型网络。CSMA 一般是需要 MAC层去实现的,在应用层似乎也可以去做,但很可能相应速度有问题。
请问CC1101如何实现FHSS?需要设置那些寄存器?还是在应用层去做,发射机选择几个频点进行发射,接收机不断的对这几个频点进行扫描?
请参考CC1101 DATASHEET 的 28.2 Frequency Hopping and Multi-Channel Systems :http://www.ti.com/lit/ds/symlink/cc1101.pdf
simpliciTI协议栈有这个类似机制,协议栈下载如下link.
http://www.ti.com/tool/SIMPLICITI?keyMatch=simpliciti&tisearch=Search-EN-Everything
SimpliciTI is a simple low-power RF network protocol aimed at small RF networks. Such networks typically contain battery operated devices which require long battery life, low data rate and low duty cycle and have a limited number of nodes talking directly to each other or through an access point or range extenders. Access point and range extenders are not required but provide extra functionality such as store and forward messages. With SimpliciTI the MCU resource requirements are minimal which results in the low system cost.
SimpliciTI was designed for easy implementation and deployment out-of-the-box on several TI RF platforms such as the MSP430 family of low-power MCUs and the CC1XXX/CC25XX/CC430 transceivers and SoCs. The sample applications run out-of-the-box on several hardware platforms:
For more information on SimpliciTI™ please visit our SimpliciTI™ wiki page.
Check out the TI SmartRF Packet Sniffer for SimpliciTI below. The packet sniffer runs on a wide variety of capture devices and can visualize the radio traffic on air in real-time. This graphic shows an example of a live capture with the SmartRF Packet Sniffer.
Tools
SimpliciTI is supplied as full source code and the supplied projects can be compiled using the CCS and IAR EW430 for MSP430 or EW8051 for 8051 SoCs. Evaluation versions of the IAR compilers can be downloaded from www.iar.com. Small applications can be built using the free evaluation version. Please contact your local IAR office for further details.