I’m trying to do a small project between which involves measuring temperature with an ESP32, send it through a serial connection to another ESP32, and make the latter write on the the Serial connection with my computer. I am using some LEDs for monitoring. The code for the sender is: #include <Wire.h> #include <LiquidCrystal_I2C.h> #include ..
Category : serial-communication
How can I close the serial port without getting invalid handle errors in Visual Studio? There doesn’t seem to be a way to close them. The app almost works flawlessly as a release exe but it becomes impossible to work with when debugging as I have to repeatedly close the error messages. Source: Windows Questions ..
Is there a way for two C++ applications to send/receive message to/from each other by under same host machine using serial communication ? p/s: I am having a Linux-based environment Source: Windows Que..
I have a serial communication between STM32 and Linux computer. STM transmits every 10ms 6 bytes of data "iiiiiC" (i = transmission_counter % 10, C = character ‘C’). The receiver however does not have a specific iteration time and may read serial faster or slower than 10ms. Also, the read function should be non-blocking. This ..
I am trying to tap into the communication between a proprietary legacy software installed on a 32-bit Windows PC and a serial device: Device—COM1—legacy software I am aware that this topic has been frequently discussed before, I linked some of the discussions here: Listening to Serial Com Ports that are In use Creating a pair ..
I need to read a variable amount of bytes on arduino’s serial port. The equivalent in c # is the following: int nCount = iSerialPort.BytesToRead; if (nCount == 0) { return; } byte[] btAryBuffer = new byte[nCount]; iSerialPort.Read(btAryBuffer, 0, nCount); Is there a way to do this in arduino / C ++? Thank you very ..
I have faced the following problem: I wish to read data comming to my serial port on linux. Data are send from an external device with standard serial settings. I’m sure that the external device sends them, that has been already checked. However, on linux all i can read is an empty byte. What am ..
I am currently working on a project which involves a LCD, a sensor and a Keypad. The Arduino Uno has 14 input/output pins (0-13, 0 being rx, 1 being tx). The LCD itself occupies 5 pins (pin 8-12), the sensor 1 (pin 7) and the keypad 7 (pin 0-6) which is nice because I have ..
I am trying to interface a mega with a due per I2C. I have done: grounds are shared. SCL/SDA on mega 2560 (not 20/21) are connected to SCL1/SDA1 on due. SCL/SDA of due (20/21) are connected to an imu bno055 which is working fine. no pull up resistors are connected. on mega I do: #include ..
I am finding way to send hex data via serial communication i searched it several times and followed some ways but it didn’t work. i checked that protocol is working with using other software that sending hex data to device below is my code const char data[]={0xAA,0xAA,0x01,0x00,0x00,0x0E,0x00,0x01,0x00,0x00,0x00,0x2D,0x37,0x1D,0xAA,0xAA,0x01,0x00,0x00,0x0E,0x00,0x0C,0x10,0x00,0x00,0x01,0x76,0x13}; serial->setPortName(("COM8")); initSerialPort(); // baud rate and etc if(serial->open(QIODevice::ReadWrite)) ..
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