Huayu Xuanfeng 001 mobile phone development module function description
V0.12
Huayu Xuanfeng 001 mobile phone development module is both a mobile phone and can be directly applied to industry products, such as wireless data collection, control,
Security and other fields. You can think of it as a small computer with low cost and multifunction, or you can think of it as a simple and reliable single-chip microcomputer, which is directly embedded in your project through a rich external bus interface to control peripherals and improve efficiency. reduce costs.
At present, it has been successfully used in RFID bus ticketing, logistics barcode scanning, industrial data collection, GPRS video monitoring and other fields.
One: Function Cyclone 001 mobile phone development module directly uses MTK6225 mobile phone platform
1: GPRS, call, SMS, MMS
2: 2.8inch color touch screen
3: MP3, MP4
4: 300,000, 1.3 million cameras
5: Built-in 128M flash U disk, support 4GTF card
6: Bluetooth
7: stereo speakers
8: antenna, earphone, battery
9: serial port, USB
10: 128PIN external expansion interface, leading to various functional interfaces
11: Support J2ME JAVA control hardware to realize the control of peripherals,
Provide rich example programs
12: Provide MTK C language development environment and supporting code Note:
* 8: The battery is directly included in the module, which is especially suitable for places where the power supply is unstable or needs power-off protection. The module directly carries a mobile phone antenna, which may not require external expansion.
* 9: There is a serial port / USB two-in-one interface with a miniUSB interface in the module. The internal circuit is as shown below. The interface is switched by a 300MHz analog switch.
When the VCHG pin of miniUSB is low, this interface is a serial port.
You can communicate with the outside world or upgrade the program of this module.
When the VCHG pin is high, it is generally charged or connected to the computer
USB host connection, this time can realize USB transmission.
Note that the NC pin is the internal battery voltage pin, which can output voltage externally for power supply of external devices
* 10 The development module provides 128 external pins (2.0mm pins),
Audio interface, SD card, SIM card, interface voltage, USB, serial port, button, Camera, ADC, GPIO, parallel port, etc. are all led out. You only need to remove the C shell behind the mobile phone development module to use these extension interfaces directly. The user only needs to make a double panel circuit and insert the mobile phone development module into the main control.
Two: hardware baseband chip: MTK6225, integrated a 104MHz ARM7
With a DSP and some external interfaces, the block diagram is as follows:
As can be seen from the above figure, MT6225 is a highly integrated single-chip mobile phone solution, which integrates a 32bit ARM7EJ-S RISC processor,
MT6225 is not only a high-performance GPRS Modem, but also integrates more wireless multimedia applications, such as display engine, 64 polyphonic audio,
Hardware JAVA engine, MMS, etc. In addition, MT6225 also provides a total expansion interface, such as Memory interface, 8 / 16bit parallel port, serial port, Nand
Flash, IrDA, USB, MMC / SD / MS / MS Pro, Camera, buttons, etc.
Power chip MT6318 is a high performance designed specifically for MT6225
PMIC, the internal block diagram is as follows:
MT6225 provides charging circuit, start-up circuit, audio power amplifier circuit, SIM
Interface conversion circuit and various power supply voltages.
The radio frequency chip MT6139 is a direct conversion high-performance four-band radio frequency chip. Because direct conversion is used, the intermediate frequency circuit is omitted, the external circuit is more concise, and the difficulty of radio frequency design and application is reduced. The principle block diagram is as follows:
In addition to the above three main chips, Flash and RAM are also required
Two-in-one MCP, an RF power amplifier PA, antenna switch, and an MT6601 Bluetooth chip, these chips constitute a mobile phone development module.
Mobile phone hardware circuit diagram
http://down.study-bbs.com/arm/other/Hua Yu / MTK related parts / P1300_V4.0_20090213_key_huayu.pdf
Password is huayu
Three: software
The software operating system of the MTK platform is Nucleus, similar to uCOS
RTOS operating system. Based on Nucleus, the GUI in the form of WIN32 is abstracted, and the development language is the C development environment. At the same time, we also provide a complete JAVA development environment (J2ME). Compared to the C language, JAVA
The development platform is less difficult to develop and can shorten the development cycle.
And provide a lot of JAVA code example programs, such as JAVA version serial port debugging tool of mobile phone development module, JAVA program of RFID function (including backplane schematic, PCB diagram, MCU51 program), barcode scanning, GPIO
Control, serial port control, parallel port control, ADC data acquisition, network GPRS
Applications, camera video applications, etc.
MTK mobile platform is a platform concept, it is a whole, including software, hardware, testing and so on.
Four: application
1: mobile phone
2: Can be used as an ordinary development board, you can understand the familiar mobile phone development,
You can also learn about mobile game development under JAVA. Especially learning the experience and application of large embedded design development.
3: Use the development board's own functions to develop and design some products, such as wireless data collection, security, barcode scanning, video surveillance products.
Five: advantages
1: Subvert the traditional design concept, directly use the mobile phone control peripherals, and use the C language or JAVA to develop directly on the mobile phone. This was previously done by the mobile phone company, and now everyone can do it.
2: Reduce hardware costs by half, such as wireless data collection products,
All use MCU51 or ARM to build a set of main control platform,
After buying GPRS, plus the required functional modules such as RFID function,
To form a complete RFID wireless data collection system, if the current mobile phone solution is adopted, it is only necessary to add RFID to the mobile phone module, and there are mature power management, menu interface, etc. The system is stable and reliable.
It only takes a few days to complete, and the software cost is greatly reduced.
3: Directly replace the single-chip computer or ARM in industrial projects, understand the mobile phone development module as an advanced single-chip computer, or even a small computer that is simpler than the single-chip computer, without understanding the hardware, develop programs directly on the PC
Reduce the difficulty of hardware and software.
Six: specifications
1: 2.8inch touch color screen, 65K color
2: Support GPRS, call, MMS, SMS
3: Support Bluetooth, MP3, MP4, 300,000 cameras (1.3 million optional)
4: 128Mbit NorFlash, 64Mbit SRam, 128MByte Nand
Flash, support TF card, U disk
5: ARM7 104MHz core with large-capacity cache
6: Support USB interface, serial port, 3.5mm headphone jack
7: 700mA battery, standby current 2mA, charging current 300mA
8: 3MByte JAVA space, support JAVA for GPIO, serial port, parallel port, ADC, GPRS and other operations, support JAVA automatically start running
9: Provide C language development environment and partial open code
10: Size 7 * 9CM
Sales and after-sales website:
Shenzhen Weibochuang Technology Co., Ltd.
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