Embedded developing board having strong expansibility

Abstract

The invention provides an embedded developing board having strong expansibility, which comprises four components: a system power supply, a processor minimum system, a board-loading base resource and an expansion function module, wherein the system power supply comprises a USB (universal serial bus) power supply interface, an external power source power supply interface, a self-recovering fuse, a voltage stabilizer, a power self-locking switch, a power light; the processor minimum system comprises a 51 single chip, an AVR (automatic voltage regulation) single chip and an ARM (advanced RISC machine) processor; the board-loading base resource comprises a light-emitting diode, a serial shift register, a 4-bit 8-section common cathode nixie tube, a passive buzzer, a matrix keyboard, an independent interruption key, a serial port circuit, a temperature sensor, a keyboard mouse interface, an infrared receiving circuit, an EEPROM (electrically erasable programmable read-only memory) memory, a real-time clock, a PWM (pulse-width modulation) / DA (digital to analog) converter, an ADC (analog to digital converter) sampling circuit, a USB interface, a USB conversion serial port chip, a 1602 dot matrix liquid crystal module interface and a 12864 dot matrix liquid crystal module interface; and the expansion function module comprises an SD / MMC (safety data / multi media card) card interface circuit, a TFT (thin film transistor) color liquid crystal touch screen, an audio module, a wireless communication module and a network module.

Description

technical field [0001] The invention relates to an embedded experiment development device, in particular to a multifunctional embedded experiment development board with strong expansibility and supporting multiple single-chip computers and ARM processors. It is used in embedded experiments, teaching, research, and product development fields. Background technique [0002] Traditional embedded development boards only support the same type of microcontroller or ARM processor, and the onboard resources are fixed. This experimental development board has the following obvious disadvantages: [0003] 1. Only the specified processor can be used, and the development board cannot be upgraded; [0004] 2. The resources of the development board are fixed, and the scalability is greatly limited; [0005] 3. It only contains simple functions and cannot satisfy embedded advanced applications; [0006] 4. Due to the fixed processor and resources, the scope of application is small; [0...

AI Technical Summary

Problems solved by technology

[0003] 1. Only the specified processor can be used, and the development board cannot be upgraded;

[0004] 2. The resources of the development board are fixed, and the scalability is greatly limited;

[0005] 3. It only contains simple functions and cannot satisfy embedded advanced applications;

[0006] 4. Due to the fixed processor and resources, the scope of application is small;

[0007] 5. There is no integrated download circuit, and a special downloader needs to be purchased;

[0008] 6. Standard 9-pin RS232 serial ports are required for downloading programs and serial communication, which brings great inconvenience to developers, especially laptop users (currently many computers, especially laptops, do not have standard 9-pin RS232 serial ports);

[0009] 7. The traditional learning process is monotonous and boring, lacking in fun and entertainment;

[0012] 10. It is limited to the control of the hardware on the board, focusing on the hardware, and lacks software applications such as digital signal processing, host computer communication, image processing, and file systems.

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