The program is compiled and downloaded to the single chip computer, using STC - ISP download, please refer to the tutorial. In fact, the realization of the various functions of the mobile phone 51 microcontroller write wireless charging program is realized on the basis of GSM or CDMA module, this module is the so-called communication processing module, and the phone's call, SMS, multimedia and Internet access functions are completed by this processing module. The single chip microcomputer is equivalent to a control center, which controls the working state of the module and will be correspondingData is stored in the appropriate unit.
Now the MCU series is more, commonly used in various manufacturers of 51 compatible chips, ARM compatible chips and PIC, AVR, each chip is also integrated 51 MCU write wireless charging program A lot of modules and data interfaces, these chip information, can find a lot of online. In the past, the non-intelligent machine was generally connected to the computer as a serial communication device, which could control sending and receiving SMS messages and reading and writing mobile phone data through the AT command.
Method 151 singleChip write wireless charging program : 1000 or so lights, need 10 address line strobe, 51 IO pin should be no problem. All that remains is to use a large number of decoders to convert binary information into pin information. It is estimated that 51 MCU write wireless charging program you only control the light and off, if it is so strobe can also be light and dark control, otherwise the output information must be added, that is, the need to add the drive circuit.
No distance limit, convenient, but to have a server or professional router, fixed IP.A wireless mouse, I did not use infrared tube, I am using infrared decoding, is to use an infrared remote control (TV) the remote control of 0 to 9 code translated out combined with VB write an upper computer program to achieve control, see what help to you, the principle of what is actually very simple.
3. Serial communication RXD and TXD require two wires to connect with the TXD and RXD of the single chip microcomputer. Start pin IGT is connected with the I/O port of the single chip microcomputer, such as P0. (The MCU outputs the start signal, outputs a low pulse greater than 100ms, and the level drop duration cannot be exceededAfter 1ms, that is, the falling edge should be short) Hardware handshake RTS0 pin is connected with the I/O port of the MCU, such as P1.
4, ps/2 interface to wireless signal need to first send the keyboard input data through the PS/2 interface to the RF transmitter module. Then the RF receiving module within 100 meters receives the data and transmits it to the MCU, and displays it on the LCD screen. The single-chip microcomputer then communicates through serial port through MAX232 to realize information exchange with the host computer.
5, USB interface is free, 51 MCU hardware does not support usB function, the communication protocol is very complex,PS/2 interface is relatively simple, a search on the Internet can find routines, many 51 MCU development board with PS or PS/2 interface. Of course, since you use a single chip computer, why do you need to use such a large keyboard, there is a special keyboard, why also through the single chip computer. The single chip computer can communicate with the host computer by serial port, and the program receives serial port data on the line.
6, set TI=1, is manually set the interrupt request flag after the serial transmission request is completed. But you did not cause (es=1) the serial port to interrupt. In fact, your interrupt5 handler isn't written either,It's empty. (Note this) Since you did not set it0=1 (jump trigger interrupt), it is IT0=0 (low level trigger).
Program download: First of all, the hardware connection is usually through the serial port, the computer serial port and the download port of the development board are connected. To prepare the software, you need to edit and debug the C source code, compile it using an integrated development environment (such as Keil C) and generate the hex file. Then, use the program to download the software (such as STC ISP V88),Set the download options, such as selecting the file to download, setting the download speed and the single chip computer model.
Problem 1: How to use the hardware on the MCU development board First of all, you need to carefully look at the schematic diagram of the development board. You need to plug the MCU into the chip holder of the development board, the pin of the chip holder will be connected to the PCB board, and the wiring on the PCB board will connect the pin of the chip holder to the specific hardware. The hardware devices on the development board are connected through the PCB wiring of the development board, and you only need to find the pin relationship of the specific hardware connected to the MCU on the schematic diagram.
Found in the computer 【STC-ISP program writing software, there are different versions, but the usage is basically the same. Double click to open the interface shown in the image below. Then click the arrow in the figure below to find the single chip model STC89C52. Then, the 51 MCU development board and the computer are connected, the first connection, will automatically install a drive to the computer.
1, you must first find 12864 LCD 51 MCU write wireless charging program display code. Is to what port to send data you need to know 51 single-chip microcomputer write wireless charging program , the general store has to send code when selling.
This design uses 51 MCU to write wirelessCharging program AT89S52 is a flash type single chip microcomputer 51 single chip microcomputer write wireless charging program , can directly online programming 51 single chip microcomputer write wireless charging program , to the single chip microcomputer write program becomes easier. The design of the digital thermometer is DS18B20 digital temperature sensor, DS18B20 is a high-precision digital temperature sensor that can be networked, because of its unique advantages of single bus, users can easily set up a sensor network, andThe multipoint temperature measurement circuit is simple and reliable.
PROTEUS, when installed, does not generate shortcuts on the desktop by default. First, open the Start menu and click "Program, Proteus 7 Professional, ISIS 7 Professional" to open PROTEUS. Click P in the figure to add components such as microcontroller. Search with keywords, 89C51, and add a few LED, because it is simulation without adding current limiting resistance and crystal reset components 51 MCU write wireless charging program Now.
Compared with the traditional thermometer, this design is based on DS18B20 digital thermometer, it has the characteristics of convenient reading, wide temperature measurement range, accurate temperature measurement, digital display, wide application range. In this design, AT89C51 single chip microcomputer is used as the main control device, DS18B20 digital temperature sensor is used as the temperature measuring element, and the data is transmitted through the 4-bit common anode LED digital display tube in parallel to realize the temperature display.