What is the error reported by golang serial port?

Recently, when I was using Golang to write a serial communication program, I encountered some error problems. I have spent a long time solving the error problem, and I specially recorded it to share with all developers. I hope it will be helpful to everyone.

First of all, we need to know that Golang uses the Serial Port Operations library to implement serial port communication. This library is different from the serial port libraries of other languages, so during use, you need to pay attention to some details.

The following are some errors and solutions I encountered when writing Golang serial communication programs:

1. Error: "Could not open serial port"

When we use the Golang serial port function, if this error message appears, it may be because some parameters when opening the serial port are incorrect, resulting in the serial port being unable to be opened. When solving this problem, you can try the following solutions:

1) Check whether the serial port name is correct: If the serial port name is written incorrectly, the correct serial port cannot be opened.

2) Check whether the serial port permissions are correct: When using a Linux system, you need to ensure that the user has read and write permissions on the serial port, otherwise the serial port will not be open.

3) Close the serial port occupation: Sometimes other programs may occupy the serial port resources, causing the serial port to fail to open. You can try to close other programs.

2. Error report: "read serial port failed"

This error message is usually due to an exception when reading serial port data. To solve this problem, you can try the following solutions:

1) Adjust the buffer size for reading data: If the buffer setting when reading serial port data is too small, it will cause the data reading to fail. You can try to increase the buffer size. The size of the large buffer.

2) Check the timeout setting when reading data: If a timeout is set when reading data, this error message will appear when the serial port cannot return data within the timeout period. We can adjust the timeout or disable the timeout function.

3) Check the data transmission format: If the data transmission format is incorrect, it will also cause data reading to fail. You can try to adjust the serial port data transmission format.

3. Error: "write serial port failed"

This error message is usually due to an exception when writing data. To solve this problem, you can try the following solutions:

1) Check the length of the written data: If the length of the written data is incorrect, it will cause the data writing to fail. You can check whether the written data length is correct.

2) Check the format of the written data: If the format of the written data is incorrect, it will also cause the data writing to fail. You can try to adjust the format of the serial port data transmission.

3) Check the timeout setting when writing data: If a timeout is set when writing data, this error message will appear when the serial port cannot return data within the timeout period. We can adjust the timeout or disable the timeout function.

In short, when using Golang serial port functions, you need to be very careful and fully test and debug the code to ensure the stability and reliability of the program.

The above are some errors and solutions I encountered when using Golang to write serial communication programs. I hope they can be helpful to all developers.

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