51 MCU Basics of IoT 01- Development Environment Construction-EEWORLD

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Preface

From aerospace to children's toys, everything that has a little bit of intelligence is inseparable from the presence of microcontrollers... In this article, we will learn about the STC 89C52 microcontroller, which belongs to the 8051 series of microcontrollers. As an entry-level microcontroller, the 51 microcontroller is not only widely used in teaching experiments, but also in actual projects.

1. Basic knowledge

1. What is a microcontroller?

A single-chip microcomputer is a single-chip microcomputer that consists of a central processing unit CPU, data storage RAM, program storage ROM, input/output devices (keyboard, display, etc.) integrated into a single chip.

2. What can a microcontroller do?

The functions of the microcontroller are well explained at the beginning of the preface. Anything that has a touch of intelligence is inseparable from the microcontroller, especially now that the Internet of Things is developing in full swing, and the microcontroller has ushered in a new spring. Currently, the most commonly used smart meters and smart small appliances are the 51 microcontroller + wireless module connected to the Internet of Things platform, and then the smart devices can be monitored through the front end.

3.Why should we learn microcontrollers?

Learning about microcontrollers can help you make some interesting small creations by yourself, improve your hands-on and practical abilities, and participate in electronic competitions. It is very helpful for job hunting after graduation, and you may even change the world accidentally.

4. Development Board Introduction

The 51 single-chip Internet of Things development board used in this experiment is shown in the figure below:

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The corresponding names of the modules marked in the above figure are as follows:

2. Development Environment Construction

Download information from Baidu Cloud Disk:

Link: https://pan.baidu.com/s/1WVuun7PWWMfWLcbZ4-MWhw

Extraction code: h4iv

After downloading and decompressing, the directory is as follows:

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1. Install CH340 driver

Open A-08 related software/must-install software/CH340_CH341

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Double-click to install:

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The following box pops up to indicate that the installation is successful, click OK

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2. Install Keil 4

Open A-08 related software/must-install software/keil4

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Click mdk473 to start installation

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Click the Next button in the picture above to proceed to the next step

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Check I agree to all the terms of the preceding License Agreement, then click Next

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Select the default path C:Keil and click Next

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Fill in the First Name, Last Name, Company Name, and E-mail content casually, click Next, and enter the installation page

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Wait for the installation to complete

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Continue to click Next

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Click Finish, a pop-up box will pop up prompting you to install the driver software, click Install

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After clicking Install in the above picture, the installation of Keil4 is completed, the web page opens the content in the picture below, and an icon is generated on the desktop, and the installation is complete.

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3. Install C51 plug-in

Click A-08 related software/must-install software/keil4/c51v901.exe

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Click Next

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After checking the Agree tab, click Next

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Select the same path as the Keil4 installation path, then click Next

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Continue to click Next

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If it appears during the process:

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Click Replace All

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4. Activate Keil 4

Open the Keil4 icon generated on the desktop as an administrator

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Click License Management

Open the A-08 related software/must-install software/keil4 folder

Unzip keygen2032, copy the CID in keil LicenseMangement,

Click Generate

Copy the generated ID, paste it into Keil License Management, and click Add LIC

The above picture shows that the activation is successful and the validity period ends in 2032

3. Download and run

1. Compile

First, unzip the A-08 reference program.rar, and then open the first program: 1. Light up an LED

Click the compile icon, the system has 0 errors and 0 warnings

The generated hex file is as follows

2. Download

(1) Open the download software

Unzip A-08 related software/Required software/STC-ISP download/stc-isp-15xx-v6.87M.zip, then double-click to open stc-isp-15xx-v6.87M.exe

(2) Connecting Hardware

(3) Download the program

Set up the STC-ISP tool and select the burning file

Then click the Download/Program button

Then click the hexagonal self-locking switch twice in succession to reset and power on, complete the cold start, and download the program successfully

(4) Equipment operating status

After the program is downloaded successfully, the device LED0 is always on, indicating that the program is downloaded successfully

Reference address：51 MCU Basics of IoT 01- Development Environment Construction

Previous article：51 MCU Playing with the Basics of the Internet of Things 02-Light up the LED lights to achieve a marquee effect
Next article：The principle of sending and receiving of 8051 asynchronous serial port

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