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TI CC430 6LoWPAN无线传感器网络解决方案

来源： eccn

2019-07-09

类别：工业控制

拍明

原标题：TI CC430 6LoWPAN无线传感器网络解决方案

　　TI公司的CC430系列是集成了RF收发器内核和超低功耗微控制器的系统级芯片,采用16位RISC架构,扩展存储器, 高达20MHz系统时钟,工作电压1.8V-3.6V,CPU工作模式的功耗160 µA/MHz,待机模式2.0 µA,主要用在无线模拟和数字传感器系统,温度调节器, AMR/AMI仪表,智能电网无线网络等.本文介绍了CC430系列主要特性, CC430F613x和CC430F513x功能方框图及其典型应用电路图与相应的元器件,以及6LoWPAN 低于1GHz评估板CC-6LOWPAN-DK-868主要特性,系统框图和相应的电路图,材料清单.

　　The Texas Instruments CC430 family of ultra-low-power microcontroller system-on-chip with integrated RF transceiver cores consists of several devices featuring different sets of peripherals targeted for a wide range of applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features the powerful MSP430™ 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.

　　The CC430 family provides a tight integration between the microcontroller core, its peripherals, software, and the RF transceiver, making these true system-on-chip solutions easy to use as well as improving performance.

　　The CC430F61xx series are microcontroller system-on-chip configurations combining the excellent performance of the state-of-the-art CC1101 sub-1-GHz RF transceiver with the MSP430 CPUXV2, up to 32 kB of in-system programmable flash memory, up to 4 kB of RAM, two 16-bit timers, a high-performance 12-bit A/D converter with eight external inputs plus internal temperature and battery sensors on CC430F613x devices, comparator, universal serial communication interfaces (USCI), 128-bit AES security accelerator, hardware multiplier, DMA, real-time clock module with alarm capabilities, LCD driver, and up to 44 I/O pins.

　　The CC430F513x series are microcontroller system-on-chip configurations combining the excellent performance of the state-of-the-art CC1101 sub-1-GHz RF transceiver with the MSP430 CPUXV2, up to 32 kB of in-system programmable flash memory, up to 4 kB of RAM, two 16-bit timers, a high performance 12-bit A/D converter with six external inputs plus internal temperature and battery sensors, comparator, universal serial communication interfaces (USCI), 128-bit AES security accelerator, hardware multiplier, DMA, real-time clock module with alarm capabilities, and up to 30 I/O pins.

　　Typical applications for these devices include wireless analog and digital sensor systems, heat cost allocators, thermostats, metering (AMR/AMI), smart grid wireless networks, etc.

　　CC430系列主要特性:

　　True System-on-Chip (SoC) for Low-Power Wireless Communication Applications

　　Wide Supply Voltage Range: 1.8 V to 3.6 V

　　Ultra-Low Power Consumption:

　　CPU Active Mode (AM): 160 µA/MHz

　　Standby Mode (LPM3 RTC Mode):2.0 µA

　　Off Mode (LPM4 RAM Retention): 1.0 µA

　　Radio in RX: 15 mA, 250 kbps, 915 MHz

　　MSP430™ System and Peripherals

　　16-Bit RISC Architecture, Extended Memory, up to 20-MHz System Clock

　　Wake-Up From Standby Mode in Less Than 6 µs

　　Flexible Power Management System with SVS and Brownout

　　Unified Clock System with FLL

　　16-Bit Timer TA0, Timer_A with Five Capture/Compare Registers

　　16-Bit Timer TA1, Timer_A with Three Capture/Compare Registers

　　Hardware Real-Time Clock

　　Two Universal Serial Communication Interfaces

　　USCI_A0 supporting UART, IrDA, SPI

　　USCI_B0 supporting I2C, SPI

　　12-Bit A/D Converter With Internal Reference, Sample-and-Hold, and Autoscan Features (CC430F613x and CC430F513x Only) Comparator

　　图1.CC430F613x功能方框图

　　图2.CC430F513x功能方框图

　　图3.低于1GHz无线电方框图

　　图4.CC430F61xx典型应用电路图

　　图5.CC430F51xx典型应用电路图

　　应用电路中元件数值:

　　6LoWPAN 低于1GHz评估板CC-6LOWPAN-DK-868

　　This document describes the TI 6LoWPAN evaluation kit for use in the 868/915MHz bands. The kit is based on hardware from TI and 6LoWPAN software (NanoStack) from TI third party Sensinode Ltd.

　　The CC-6LOWPAN-DK-868 kit provides easy way for users to start developing their own wireless sensor network applications based on 6LoWPAN technology. There are two different APIs for communicating with the NanoStack, based on if you use CC1180 Network Processor or the CC430 SoC. The API used for CC1180 is called NAPSocket, while the API for CC430 is called NanoSocket.

　　The kit contains a 6LoWPAN Edge Router (access point/gateway to IPv6) based on TI‟s OMAP-L138 processor. The Edge Router (ER) uses a CC1180EM as radio interface. The Edge Router is running Sensinode Ltd NanoRouter 2.0 software and can connect wireless sensor nodes running Sensinode Ltd NanoStack 2.0 lite. The evaluation version of NanoRouter 2.0 included in the kit is limited to 10 nodes per Edge Router.

　　Included in the kit are two EM430F5137RF900 Rev 3.2 boards and two CC1180DB boards. The EM430F5137RF900 and CC1180DB boards are used as wireless sensor devices in the kit. CC430 comes with library support for Sensinode NanoStack 2.0 lite (NanoSocket [8]). This library model allows easy implementation of user applications, built directly on top of the NanoSocket library.

　　The CC1180DB contains a Wireless Network Processor (WNP), CC1180, which handles all 6LoWPAN network communication. Connected to the WNP is a host processor (MPS430F5438A) running the user application. The hardware interface between the network processor and the host processor is UART. The software interface between the network processor and the host MCU is Sensinode NAPSocket API [12]. The NAPSocket API acts as a wrapper library to parse Sensinode NAP protocol messages [9].

　　The kit provides Edge Router (NanoRouter) control and testing software (Sensinode NodeView 2.0 [10]). NodeView 2.0 can be used to control NanoRouter software running on the Edge Router in real time and provides e.g. address information of the connected nodes. The control protocol is based on Sensinode proprietary UDP communication. The NodeView 2.0 tool also provides a simple way to create user‟s own java applications that are included in the NodeView 2.0 GUI in the form own separate tabs.

　　All nodes can act as routers inside the 6LoWPAN network. The radio transceivers on the nodes are thus always on, which makes the system less suitable for battery-powered devices.

　　This documentation gives detailed information of the kit contents and behavior, its configuration and how the different 6LoWPAN standards are implemented.

　　评估板CC-6LOWPAN-DK-868主要特性:

　　IP-based networking, enabling the “Internet of Things”

　　CC1180 Over-Network Download (OTA), future proofs:

　　Device applications and network upgrades

　　Low memory footprint;

　　CC1180 6LoWPAN stack is less than 32kB

　　CC430 6LoWPAN stack is about 17kB

　　Sensinode 6LoWPAN software can run on all frequencies that CC1180 and CC430 support, providing a sub-GHz mesh solution.

　　Note: The kit hardware is for use in the 868/915 MHz bands.

　　Low development complexity, customers used to IP programming will be up and running in no time with the simple socket API approach.

　　Configurable RF interface:

　　Output power: -30dBm to +10dBm

　　Date rates: 50, 100, 150 and 200kbit/s

　　RX Attenuation, for close-in systems

　　AES-CCM* secured IEEE802.15.4e payloads, using network-wide key.

　　Coordinated mesh networking (modified RPL)

　　IEEE802.15.4g/e PHY and MAC

　　Compressed IPv6 headers (subset of IP header compression)

　　ICMPv6 Neighbor Discovery (subset of ND)

　　User application uses User Datagram Protocol (UDP) to send data

　　Short address link-layer communication (based on allocated two byte address, unique under a simple 6LoWPAN, allocation coordinated by a single Edge Router)

　　Fully automatic bootstrap process, automatic route discovery

　　Self-healing mesh

　　Each node replies to ICMPv6 echo requests

　　P2P communication

　　Synchronous frequency hopping possible, using 50 FHSS channels

　　The CC-6LOWPAN-DK-868 is a complete development kit for a sub-1 GHz 6LoWPAN system. The kit offers a flexible development platform for Sensinode’s NanoStack running on the CC430 and CC1180 devices.

　　The kit contains two 6LoWPAN network nodes based on CC430F5137, two nodes based on CC1180 + MSP430F5438A and an IPv6 to 6LoWPAN gateway.

　　The development kit demonstrates an example of a typical sensor network with a simple Network Analyzer software running on the nodes. The nodes are automatically given a unique IPv6 address and can be pinged from a PC using standard tools.