To put it simply, the machine language that you write the code (C or assembly) is downloaded to the microcontroller in a certain way. Called programming.
There are many programming softwares and many methods, mainly depends on your MCU model.
For example , STC series microcontrollers: First, you need to install keil software and STC_ISP program download software. First you want to achieve the function of the microcontroller with keil programming, and then use STC_ISP download software to download the microcontroller, and finally open the microcontroller to provide power you can observe the development board or their own board built on the phenomenon of the ... Passed Constantly modify the program, download the program, and finally get the results you want on the experiment board. In this way, you can... Connection between experiment board and PC: Generally, for a development board bought out-of-the-box, there will be a USB interface to provide 5V power, provide communication, or another USB to download the interface driver, and there is RS232. Serial port, realize the conversion between MAX232 level and TTL level of the one-chip computer, use in carrying on the communication and downloading the procedure and data; For the circuit board built by oneself, still have MAX232 chip and RS232 serial port are used for realizing the program to write, Implement the download of data and programs to the microcontroller. Using the RS232 serial port to achieve the programming process! To use USB to write, you need a corresponding ISP download software and hardware programmer, generally this programmer is expensive. Using the USB port to achieve the programming process! In general, the programming program is still available to download with the ISP, to build their own RS232 serial port circuit, simple and practical, the microcontroller programming process is enough.
step:
1. First open the Easy 51Pro application;
2. Select the single-chip model "AT89S51" and observe the "status" information on the right side of the software;
3. Don't forget to select the driver, otherwise there will be "programmer: no detected device (feature word: ff fff ff)" message, the driver settings as shown:
4. After returning to the "Status" information bar and clicking on "Detection Device", if you follow the step-by-step procedure, you will see status information such as "Programmer: Detected Device (Feature Word ...)".
5. Information indicates that the programmer has detected the device. The following opens the compiled .hex file, as shown in the figure:
6. Hold your breath and start to write the microcontroller. . .
Click "Automatically complete". After the status information is displayed like the right message in the figure, the "write lock bit" will be completed.
The specific programming software can be searched on the Internet and generally available.
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