Can't the computer recognize the stm32 serial port?

After downloading the stm32 chip, many friends used the serial port to connect to the computer, only to find that the computer could not recognize it. Don’t worry if you encounter this problem. Today, PHP editor Zimo will bring you the reasons and solutions for why stm32 cannot be recognized by the computer. Let us read the following carefully to find the answer.

1. The stm32 serial port cannot be recognized by the computer?

The first step is to check whether the hardware is connected properly. After the serial port cable is connected to the computer, you will see the port corresponding to the serial port cable in the device manager. If you do not see it, it means there is a problem with the hardware connection. Eliminate step by step.

Then use the serial port debugging assistant to communicate with stm32, judge the quality of stm32 through simple instructions, and finally debug it.

2. Why can’t the computer host connect?

Why can’t the computer host connect to the network?

Whether it is at home or in the office, we all hope that our computer hosts can smoothly connect to the network for various work or entertainment activities. However, sometimes we may encounter the problem that the computer host cannot connect to the network, which brings a lot of inconvenience to our lives. So, what exactly causes this problem?

Possible reasons:

1. Network connection failure: First of all, it may be that the computer host cannot connect to the network due to network connection failure. This may involve routers, network cables, network settings, etc. 2. IP address conflict: If the IP address of your computer host conflicts with the IP address of other devices, it will also result in the inability to connect to the network normally. 3. Driver problem: Sometimes, there may be a problem with the network adapter driver of your computer host and needs to be updated or repaired. 4. Firewall settings: Firewall settings that are too strict may also cause the computer host to be unable to connect to the network. 5. Network failure: In addition to problems with the computer host itself, there may also be problems with the network itself, which may also result in the inability to connect to the network.

Solution:

For the above possible reasons, we can take some solutions to solve the problem that the computer host cannot connect to the network:

Check the network connection: First, check the router, network cable and network settings , make sure the network connection is smooth. Resolve IP address conflicts: If you find an IP address conflict, you can try reassigning the IP address. Update driver: Check whether the network adapter driver needs to be updated and update or repair it in time. Adjust firewall settings: Adjust firewall settings appropriately to ensure that the computer host is not blocked from connecting to the network. Check the network status: Check whether the network provider is faulty. If it is a network problem, wait for the network provider to fix it.

Summary:

It is a common problem that the computer host cannot connect to the network. Usually, you can check the network connection, solve the IP address conflict, update the driver, adjust the firewall settings and check the network status. to solve. When encountering this kind of problem, don't panic, patiently find the root cause of the problem and investigate one by one. I believe the problem will always be solved.

3. Cats cannot access the Internet when connected to computers

The era of connecting to the Internet of Everything has quietly arrived, and the problem of cats being unable to access the Internet when connected to computers also appears from time to time in this context. As an intelligent device created by humans, computers have long become an indispensable part of people's daily lives. Cats, as companions in their owners’ lives, are also members of the family. But when these two are unable to connect to the Internet, we need to carefully troubleshoot to ensure that they are functioning properly.

The importance of the connection between cats and computers

In today's society, the function of computers is not limited to work and entertainment. It is also an important tool for people to obtain information and communicate. For many people, computers have become a necessity in life. For pets, cats are their owners’ partners in life, providing them with warmth and companionship.

When a cat is connected to a computer and cannot access the Internet, it will not only affect the owner's work and life, but also bring unbearable boredom and loneliness to the cat. Therefore, promptly solving cat and computer connection problems is a necessary step to ensure that life runs smoothly.

How to troubleshoot the connection problem between the cat and the computer

When it is found that the cat cannot connect to the computer and cannot access the Internet, we need to troubleshoot the problem step by step and find a solution. Here are some possible causes and solutions for this issue:

Network connection issues: First check your computer's network connection to make sure the network settings are correct. If the computer cannot connect to the network, there may be a problem with the network cable connection or the wireless network signal is unstable. Equipment failure: Check whether the respective equipment of the cat and the computer is faulty, such as whether the network cable interface is loose, whether the wireless network card is working properly, etc. Computer settings: Sometimes problems with computer firewall settings, network proxy, etc. can also cause the inability to connect to the Internet. Check your computer's settings and adjust accordingly. Cat problems: Cats sometimes naughtyly bite the network cable or touch the power off button by mistake, causing the network connection to be interrupted. Pay attention to your cat's movements and check the condition of the equipment regularly.

How to maintain the connection between the cat and the computer

In order to maintain a good connection between the cat and the computer, we need to do related maintenance work. The following suggestions can help you maintain the connection between your cat and computer:

Regularly check the equipment: Regularly check the computer and network equipment to ensure that the connection is normal. At the same time, you should also pay attention to the behavior of cats around the equipment to prevent cats from accidentally injuring the equipment. Avoid network interference: Place the computer out of reach of cats to reduce interference from cats to computers and network equipment. Consider using isolation objects such as cabinets or screens. Provide toys: Provide enough toys and activity space for cats to reduce their interest in computers. Keeping your cat active and happy also helps maintain the connection between your cat and your computer.

In general, the inability to access the Internet between a cat and a computer may be caused by a variety of reasons. We need to consider it comprehensively and take corresponding solutions. By regularly checking the equipment and maintaining the cat's living environment, we can effectively maintain a good connection between the cat and the computer, allowing them to coexist healthily and happily in the owner's life.

4. How to connect the STM32 development board to a game controller on a computer for development

In the field of computer game development, the STM32 development board has become a popular choice for many enthusiasts and One of the top choices for professional developers. As an important peripheral that is indispensable for the gaming experience, the access and control of the game controller is also an important topic in STM32 development. This article will introduce in detail how to use the STM32 development board to connect a game controller on a computer to achieve basic game interaction functions.

1. Common interface methods for connecting the STM32 development board to the game controller

To connect the game controller to the STM32 development board, the common interface methods are as follows:

USB interface : The game controller is connected to the STM32 development board through a USB cable. The STM32 development board recognizes the controller and communicates as a USB device driver. This method is simple to connect, but requires the development of the corresponding USB protocol driver. Bluetooth interface: The game controller realizes wireless connection with the STM32 development board through the Bluetooth module. The STM32 development board acts as a Bluetooth slave device to receive controller instructions. This method does not require wiring, but requires integrated Bluetooth communication protocol. Custom communication interface: A proprietary communication protocol is used between the STM32 development board and the game controller, such as UART, SPI, etc. for data interaction. This method requires an in-depth understanding of the hardware interface and communication protocol of the controller, which makes development difficult.

2. STM32-game controller connection solution based on USB interface

Below we take the connection method based on USB interface as an example to introduce the specific operation steps:

1. Prepare for STM32 development board and a game controller that supports USB Host function. Here we take the common Xbox controller and STM32F407ZET6 development board as examples to illustrate.

2. Use a USB cable to connect the Xbox controller to the USB Host interface of the STM32 development board. The STM32 development board will automatically identify the controller device.

3. Add USB Host driver support to the STM32 project. Check the USB_HOST function in CubeMX and select the corresponding Class library according to the controller type, such as HID Class.

4. Write USB Host initialization, device detection, data reading and other related codes in the application. Obtain various input states of the handle through the USB Host API, such as buttons, joysticks, triggers, etc.

5. Integrate the obtained handle input data into the game logic to achieve game control. You can try to write a simple game demo to verify the interaction effect between the controller and STM32.

3. Connection expansion of other interface methods

In addition to the USB interface method, the connection between the STM32 development board and the game controller can also use other interface methods mentioned above:

Bluetooth interface: Use the STM32's onboard Bluetooth module or external Bluetooth module to achieve wireless connection with the game controller. It is necessary to develop a Bluetooth communication protocol stack and parse handle instructions at the application layer. Customized communication interface: In-depth understanding of the hardware interface and communication protocol of the game controller, and direct connection with the STM32 development board using UART, SPI, etc. This method is more difficult to develop, but can achieve more flexible interactive control.

No matter which interface method is used, the connection and interaction between the STM32 development board and the game controller require an in-depth understanding of the hardware interface, communication protocol, and related software driver development. Only with solid embedded development skills can you be competent in such a complex project.

Through the introduction of this article, I believe that everyone has a preliminary understanding of how to use the STM32 development board to connect a game controller on a computer. If you are interested in this, you might as well give it a try. I believe there will be many interesting discoveries. Wish you good luck with your development!

5. The computer cannot connect to the Bluetooth headset?

The computer cannot connect to the Bluetooth headset because the computer device manager settings are incorrect. Tools needed: A computer.

1. Click the icon in the lower left corner of the computer, and then click Open.

2. Click in the control panel.

3. Then click Open in System and Security Settings.

4. Double-click the mouse to open the tool in the management tool.

5. Find it in the service. This is Bluetooth. If the status does not show startup, just click on this service to start it.

6. Tablet, can’t connect to computer?

1. Generally, there should be two or more drive letters as you mentioned, one is the storage drive that comes with the tablet, and one or more are the drive letters for the storage expansion slots on the tablet. a. If you ordered the storage disk that comes with it, and this problem occurs, it is either a problem with the connection to the computer or a problem with the connector; or there is a problem with the tablet itself, so there should be problems with the operation of the tablet itself. b. If you click on the drive letter of the expansion slot and there is no memory card in it, the prompt "Insert the disk into the drive" is correct; if there is a card in it, most of the time it is because there is a problem with the card or the card and the slot are not in good contact. .

2. Delete all access controllers in the computer device manager, reinstall the driver, change the data cable, then change the USB port, and try connecting to the computer.

3. Are there any operating problems with the tablet system itself?

7. The company computer cannot connect to the hotspot?

Step 1. Turn on the computer and enter;

Step 2. Click, then click;

Step 3. Click; then right-click and select Properties in the pop-up menu ;

Step 4. Double-click Intelnet Protocol Version 4 (TCP/IPv4);

Step 5. Set the preferred DNS server to 114.114.114.144;

8. Computer Can I connect to mobile phone hotspot but not computer wifi?

It may be that your wireless network adapter is disabled. Check whether it is turned on to automatically obtain the IP address and DNS server address, or check whether your computer network service is normal. Use troubleshooting methods to see if it is connected. Another WiFi to determine if the hardware is damaged. Specifically:

1. You can open it to see if the wireless network adapter is disabled, just right-click to open it;

2. Check the adapter, select it, and then select Obtain automatically IP address, automatically obtain DNS server address;

3. Use computer housekeeping software to ensure that all computer services are turned on normally. If you still cannot connect, try to use the troubleshooting method to connect to another WiFi;

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