"Board application: free application for Kirin Mini development board equipped with esp8266
Board data: Kirin Mini development board data and code download
It is predicted that by 2020, the global Internet of things market will increase from US $655.8 billion in 2014 to US $1.7 trillion, which is definitely one of the most promising industries in the future. Under such a background, both upstream semiconductor manufacturers, middle and downstream product scheme designers, and cloud platform service manufacturers have made great efforts to optimize the layout before the real popularization and development of the Internet of things.
Original address: https://www.eeboard.com/evaluation/kylinmini/
China Mobile is no exception. In order to let the majority of users understand their open cloud platform onenet, it has also launched the development board of Kirin block series. This time, aiban.com is lucky to get some development boards of Kirin block Mini from China Mobile and apply to netizens for use free. Before that, let's learn about the characteristics of Kirin block Mini development board.
Kirin MINI has little difference in function from the mainstream Internet of things development board on the market. The only big difference is in the structure of PCB design. Now the more mature versions separate microcontroller board, sensor board and WiFi module. Users can develop according to their own experience or familiar product portfolio, which greatly reduces the difficulty of getting started, The Kirin Mini is a single board, and the only thing that can be changed is the WiFi module. In addition, although the Kirin mini board is not equipped with an on-board debugger, it gives an additional st-link V2 debugger, which is still very good and can be used in "it". Hehe.
To tell the truth, the Kirin mini board is worthy of its mini title. It is not only small in size, but also has few functions. The onboard devices are basically clear at a glance.
In addition to the microcontroller and WiFi module, as a board developed for the Internet of things, there are a few sensors on the board. There is only one temperature and humidity sensor, the model is sht20. In addition, the board is equipped with a 2KB EEPROM.
The WiFi communication module on the Kirin mini board is eps8266, which is a highly integrated WiFi chip launched by Lexin. It is highly integrated with antenna switch, RF balun, power amplifier, low-noise amplifier, filter and power management module, so only a few external circuits are needed to realize a complete WiFi network solution.
It can run independently or as a slave on other host MCU, and the connection with external MCU is simple and convenient. It only needs SPI / SDIO interface or I2C / UART interface, and it is connected with STM32 microcontroller on Kirin Mini through serial port.
Recommendation based on STM32 development board:
Stm32f723e-disco MCU development board A 32-bit kernel based on cortex-m7 is suitable for a wide range of applications thanks to audio, multi-sensor support, graphics, security, video and high-speed connection functions.
Stm32l496g-disco development board A smart watch scheme with UI interface based on stm32l496agi6 microcontroller.
St nucleo-f401re MCU development board One provides a comprehensive STM32 software Hal library and various software examples to realize the seamless integration of multiple development environments.
Of course, if the esp8266 is not connected to an external MCU, it can also be started directly from the external flash memory only by the internal integrated processor, and the built-in cache memory is conducive to improving the system performance and reducing the memory demand.
More features of esp8266 chip are as follows:
802.11 B / g / N standard
WiFi Direct (P2P)、soft-AP
Integrated TCP / IP protocol stack
Integrated tr switch, balun, LNA, PA and matching network
Integrated PLL, voltage regulator, dcxo and power management unit
Output power of + 19.5dbm in 802.11b mode
Power off leakage current less than 10uA
Integrated low-power 32-bit CPU, which can also be used as application processor
SDIO 1.1 / 2.0, SPI, UART interface
STBC、 1 × 1 MIMO、2 × 1 MIMO
A-MPDU & A-MSDU aggregation & 0.4ms protection interval
Wake up and transfer data packets within 2ms
Power consumption in standby mode is less than 1.0mw (dtim3)
In addition, the esp8266 also has three different working modes: activation mode, sleep mode and deep sleep mode. The accurate switching between various modes can help the needs of low-power applications. For example, in the sleep mode, the current consumed by the esp8266 is less than 12ua, so we can wake up the WiFi connection under a specific condition by programming, Before that, keep WiFi in sleep mode to save power consumption; For another example, we can program and adjust the PA output power of esp8266 in close range to reduce the overall power consumption.
If compared with the WiFi schemes on the market, it can be clearly found that under similar conditions, esp8266 has an extremely prominent price advantage. Therefore, at present, many engineers will consider that the esp8266 with obvious price advantage will become one of the first schemes under the condition of sufficient product performance.
In fact, many engineers want to evaluate this Kirin Mini development board, which largely lies in the WiFi chip esp8266 and the cloud service of onenet, so next, actually experience the development of the next cloud service platform.
Kirin mini power on
First of all, we need to know that onenet is a cloud platform independently developed by China Mobile Internet of things. It provides simple cloud access, mass storage, computing and big data visualization services for various cross platform Internet of things applications and industry solutions, so as to reduce the R & D, operation, operation and maintenance costs of Internet of things enterprises and individuals (makers), Enable Internet of things enterprises and individuals (makers) to focus more on applications. Therefore, the key point we can get from this is simple access and convenient implementation.
Back to the Kirin Mini development board, from the introduction, we can configure the wif connection of the board through mobile wechat like the Internet of things intelligent products on the market. In addition, we also need to configure the programs in the board to our own onenet cloud service account.
Download a complete set of materials for Kirin mini board: http://pan.baidu.com/s/1pKKPgPt
It is necessary to mention that the information provided by China Mobile is still very complete, including junior high school advanced software code source code, hardware information, third-party tools, etc., saving the time for developers to search online.
Therefore, with these preconditions, it is very simple to connect the Kirin mini board to the onenet cloud service platform. It can be said that it can truly realize rapid networking in one step, which is illustrated by an example.
I won't explain the specific process one by one. There are tutorials on the official website. Here are just a few important steps. First, you must register the onenet developer account, and then create a new product. Fill it in according to your own product definition. If you don't have any clue, you can fill it in blindly. However, the device access protocol can be selected by referring to the description of the protocol. Here we choose the EDP protocol, It can not only report sensor data, but also receive real-time commands.
Recommendation based on STM32 development board:
Stm32f723e-disco MCU development board A 32-bit kernel based on cortex-m7 is suitable for a wide range of applications thanks to audio, multi-sensor support, graphics, security, video and high-speed connection functions.
Stm32l496g-disco development board A smart watch scheme with UI interface based on stm32l496agi6 microcontroller.
St nucleo-f401re MCU development board One provides a comprehensive STM32 software Hal library and various software examples to realize the seamless integration of multiple development environments.
After creating a product, the focus here is to generate a product apikey. This apikey is a masterkey with maximum permissions and can access all resources under the product.
After the product is completed, add the corresponding device, which will generate a device ID for you, and the device ID and apikey are the two items we need to write into the MCU program code.
China Mobile provides a wealth of routines that we can use out of the box.
Here is the code in the fourth compressed package.
Simply modify the device ID and apikey in onenet. C in the code. In addition, the st-tlink debugger used by the board needs to install the corresponding drivers. Fortunately, these are in the download package provided by the official.
When the board is powered on and installed, the debugger and the development board only need to connect the three wire interfaces of GND, swdio and swclk. The debugger has the identification of the first pin signal. Don't connect the wire wrong.
After downloading, restart the board. At this time, we can view the normal startup, networking and data transmission of the board through the serial port.
Of course, at this time, you can view more detailed data information on the onenet platform.
Recommendation based on STM32 development board:
Stm32f723e-disco MCU development board A 32-bit kernel based on cortex-m7 is suitable for a wide range of applications thanks to audio, multi-sensor support, graphics, security, video and high-speed connection functions.
Stm32l496g-disco development board A smart watch scheme with UI interface based on stm32l496agi6 microcontroller.
St nucleo-f401re MCU development board One provides a comprehensive STM32 software Hal library and various software examples to realize the seamless integration of multiple development environments.
In addition, we can also create a more user-friendly data acquisition interface UI and control interface on the cloud service platform of onenet, and directly create corresponding applications, such as disc display of received data information.
For example, set the switch to control the LED lights on the Kirin Mini development board.
Serial port corresponding process information printing
The LED on the development board can be turned on and off by remote control.
In addition, onenet platform also provides tools related to equipment life cycle management to help individuals and enterprises quickly realize cloud management of large-scale equipment; Also open the third-party interface and accelerate the construction of personalized application system; At the same time, the customizable "Hewu" app can provide cloud, pipe and end-to-end overall solutions. If you are interested, you can apply to aiban.com for Kirin mini board card for free and learn about it in person.
Summary
This paper briefly introduces the Kirin Mini development board equipped with esp8266 WiFi module. With the onenet cloud platform service launched by China Mobile animal network and complete materials and tools, it can quickly realize the network access operation. If netizens interested in the board can apply to Aiban for use free. Of course, If you feel that the sensor resources of Kirin Mini can't meet your needs, you can also apply to China Mobile for the Kirin development board of the standard board. It not only has the function of mini board, but also expands more sensors and has the wireless connection mode of GSM module, making your product creativity more rich and flexible.
Recommendation based on STM32 development board:
Stm32f723e-disco MCU development board A 32-bit kernel based on cortex-m7 is suitable for a wide range of applications thanks to audio, multi-sensor support, graphics, security, video and high-speed connection functions.
Stm32l496g-disco development board A smart watch scheme with UI interface based on stm32l496agi6 microcontroller.
St nucleo-f401re MCU development board One provides a comprehensive STM32 software Hal library and various software examples to realize the seamless integration of multiple development environments.
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Original statement: This article is original by Aiban. Reprint is declined“
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