As of now, the Internet of Things market is increasingly mature, and all kinds of low-power WiFi products are also active in various fields. The shipments of WiFi chips are gradually increasing, regardless of market scale or market prospects, both Personal, business, or investors are more optimistic about this market. However, with the increase in the amount, there is currently a lot of serious problems. The most representative is, such as a certain monitor camera because WiFi security issues are black. This kind of thing happens to think about it. horrible. However, not long ago, Ti launched the latest generation of low-power single-chip WiFi solutions, which added more secure features than the CC3200 in the previous generation, which has a more clear guarantee for similar WiFi security issues. Also got a development board Ti CC3220S-launchXL based on CC3220S WiFi SoC, come together.
TI CC3220S-Launchxl is in fact the development platform for the 2017 Site Electronics Competition, and when the netizen applying for this device can also experience this development board in the first time. There are not many nonsense, first look at the board, and there is a different CC3200 with the previous generation.
There is nothing wrong with the outer packaging, TI red black color LaunchPad series packaging.
The interior is a TI CC3220S-Launchxl development board, a MicroSB to the USB interface line, two single-page descriptions, one of which is a link paper in use.
At the eye, the plate is similar to the TI CC3200 development board. However, look at it carefully, the layout has changed, and the on-board debugger chip is completely changed, which is TI home TIVA C series chip.
TI CC3220S-launchxl entry-level development board with Ti, the board itself is not complicated, the main highlight is also upgraded CC3220S, which is a single-chip wireless microcontroller with 256KB RAM and enhanced security features, and the other board is also Mounted onboard simulation functions and sensors used to experience and rapidly develop, with official development tools such as the official CCS integrated development environment, it is still very simple.
Compared with the former generation products, TI CC3220S-launchxl main changes are still on the main SOC chip and debugger chip. There is no change in other features, and there is no more discussion. If you want to know, you can see Ti CC3200 LaunchPad Review.
Ti CC3220S-launch × 20 pin stacked connector (Boosterpack connector) can be connected to Ti LaunchPad and other boosterpack.
On WiFi circuits, Ti CC3220S-Launchxl also makes a compatible design, in addition to using the soft patch antenna on the board, we can also implement an external antenna solution through the resistors in the following image.
TI CC3220S-Launch is equipped with two sensors for evaluation, a Bosch BMA222 acceleration sensor, a TI home TMP006 temperature sensor.
The board debugger is connected to the PC side by the MicrousB interface. In addition to the debugging, the power supply / serial port feature is affected.
Unlike the previous generation of USB serial port chips, this boarded debugger puts TI home TM4C1294NCPDT chip, belongs to TIVA C Series Microcontroller (Specifications), based on ARM Cortex-M4 processor And there is a rich peripheral, in short, the performance function is very strong, it is a little big for a little large, of course, Ti wants to use the future development board as much as possible. However, the price of this board is 10 dollars than the original Ti CC3200 Launchpad.
Comprehensive look, the hardware block diagram of the entire development board is shown below.
Next, it is mainly seen that the board is different from the CC3220S WiFi SOC in the board.
From the hardware system block diagram, the peripheral interface resources and CC3200 are similar. The important changes are basically the increased security feature.
As shown in the table below, the CC3220 adds IPv6 support based on the CC3200, adds 4 security interfaces, adds to up to 4 STA connections, add more security features, such as debugging security, device authentication, security start, Secure storage, etc.
The following picture is a higher level of CC3220S, which shows that the application processing and network processing of the device are separately separated, user data, network information (password, authentication) all encrypted by a device authenticated. For more information about CC3220S security features, you can directly view the CC3220S specification.
The following table details the security features of CC3220S for reference.
TI's LaunchPad series is already very mature lines, and the supporting information is very rich, so even the first contact engineer, you can also guide your quick start. Unlike the very common FTDI chip on the CC3200 development board, the onboard debugging of the CC3220S development board drives most of the engineers or needs additional (download address).
Installation completion can directly use the built-in factory DEMO of the development board, you can clearly see the system log through the serial port driver, and the user button via the board can switch to the AP mode.
Both mobile phone or PC can be connected to Ti CC3220S development board, Ti official also designs two major mobile phone operating system IOS and Andriod App for mobile phone, iOS-side APP named SimpleLink WiFi Starter Pro
One thing is worthy of praise, the development board supports up to 4 STA connections.
You can directly access the control interface of the development board through the app or direct IP address, which is the factory built-in DEMO.
LED control
Acceleration data collection
In addition to your own CCS tools and third-party IDE tools, you can also try Ti's IDE tools.
It is very convenient to use, but helplessly turn off the line, it is possible to have a relationship with the mainland server, and the feeling is not very good. It is recommended to use the local IDE tool.
Ti official also provides a number of WiFi routines for users to be familiar with and reference, which can be obtained free, experience is still good, after all, users are wide.
The specific development process is similar to the LaunchPad development board of Ti. This article is no longer repeated.
If an engineer is more interested in WiFi solutions, you can also refer to the evaluation article of other WiFi modules of the board:
Low power consumption, easy to expand Atmel WinC1500-XSTK WIFI development kit evaluation
Helping intelligent hardware development - Freescale QFM-2202A WiFi module evaluation
Choose suitable WiFi scheme - Ti CC3100 Boosterpack Development Module Review
Open World - Discover Wi-Fi Development Board Reviews
Ultra-simple Wi-Fi connection - Qingke "Lightning Kit" to play the experience
summary
Introduced the latest CC3220S launchpad development board of Ti, function, and simple use, compared to the CC3200, CC3220 enhanced the function of many security features, such as adding IPv6 support, add 4 security interfaces, increasing to maximum Support 4 STA connections, add more security features including debugging security, device authentication, security start, secure storage, etc., convenient for WiFi solutions that need to be achieved, lower power consumption, while also paying more security features The user needs of the program. Throughout the WiFi module on the market, CC3220S has a great temptation for engineers who need more secure connections, more miniaturization, simplification, and can make quick prototype design demand. It is necessary to consider it.
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