serial-port

问题 I am sending binary data from an arduino to a serial port where this code is running. Using cutecom in hex mode can clearly read what I expect on that serial port. As shown below. 00000000: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 00000010: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 No problems up to here. I don't believe I need to give the arduino code. I am trying to read the same thing with c. However the code below only prints this: 24 85 ab 47 43 24 85 ab 47 43 24 85 ab 47 43

问题 I am sending binary data from an arduino to a serial port where this code is running. Using cutecom in hex mode can clearly read what I expect on that serial port. As shown below. 00000000: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 00000010: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 No problems up to here. I don't believe I need to give the arduino code. I am trying to read the same thing with c. However the code below only prints this: 24 85 ab 47 43 24 85 ab 47 43 24 85 ab 47 43

问题 I am sending binary data from an arduino to a serial port where this code is running. Using cutecom in hex mode can clearly read what I expect on that serial port. As shown below. 00000000: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 00000010: 24 04 85 ab 47 43 04 04 24 04 85 ab 47 43 04 04 No problems up to here. I don't believe I need to give the arduino code. I am trying to read the same thing with c. However the code below only prints this: 24 85 ab 47 43 24 85 ab 47 43 24 85 ab 47 43

问题 I'm writing a game that uses python and webkit, and a webpage is the front-end/GUI. The PC is connected to an Arduino that controls a coin hopper and other i/o. When the Arduino sends 'coinin' over serial, I capture this in a serial-watching thread, then run some javascript on the webpage to 'add' a coin to the game. For simplicity in troubleshooting, I set up an example that runs a test thread instead of reading serial, but the problem is the same. The thread tries to add a coin every second

问题 I have a winform program that does some asynchronous IO on a SerialPort . However, I'm periodically running into an issue with the program freezing on the SerialPort.Close() call, seemingly at random. I think it's a thread safety issue, but I'm not sure how to fix it if it is. I tried adding/removing the async DataReceived handler with the port open/close functions and discarding the in and out buffers on the port, but it doesn't seem to do anything. I think the important SerialPort code is

问题 I have a program that reads from and writes to serial port. I have a reader thread that reads data and supplies informations to shared memory. The reader thread should sleep until data is available. So I want to make read() system call to block calling thread. Considering man pages, unless you supply O_NONBLOCK to open , read should always block. But I have an active thread which in it read returns -1 continuously. ALso changing VTIME and VMIN does not make a difference. This is how port is

问题 I am doing an Autonomous Car project and I have a NEO 6M GPS module, I am using an ESp32 as the board, the module works fine with Arduino and Nodemcu. but not with ESP32, the reason being it not supporting software serial, so I took help from https://www.youtube.com/watch?v=GwShqW39jlE&feature=emb_title I added hardware serial but still, there is no output I have provided the code below #include<HardwareSerial.h>//No extra libray installed #define RXD2 16 #define TXD2 17 HardwareSerial gps

问题 I am doing an Autonomous Car project and I have a NEO 6M GPS module, I am using an ESp32 as the board, the module works fine with Arduino and Nodemcu. but not with ESP32, the reason being it not supporting software serial, so I took help from https://www.youtube.com/watch?v=GwShqW39jlE&feature=emb_title I added hardware serial but still, there is no output I have provided the code below #include<HardwareSerial.h>//No extra libray installed #define RXD2 16 #define TXD2 17 HardwareSerial gps

问题 I am receiving messages over serial port from a micro-controller. i am using a baud rate of 9600. I have a program written using win32 API that receives the messages. Sometimes it happens that i am not able to receive the messages and then suddenly a burst comes in when i press Ctrl+C. How do I clear the serial buffer so that i can avoid this flooding of data? Thank you 回答1: The PurgeComm function does that. When using serial ports in Windows, the Comm Port API reference is quite useful. 来源：

问题 I am receiving messages over serial port from a micro-controller. i am using a baud rate of 9600. I have a program written using win32 API that receives the messages. Sometimes it happens that i am not able to receive the messages and then suddenly a burst comes in when i press Ctrl+C. How do I clear the serial buffer so that i can avoid this flooding of data? Thank you 回答1: The PurgeComm function does that. When using serial ports in Windows, the Comm Port API reference is quite useful. 来源：