Linuxduino 0.2.0

Serial.readBytesUntil()

Syntax

Serial.readBytesUntil(terminator, buffer, length)

Parameters

terminator:

buffer:

length:

Returns

Example

Javascript

const linuxduino = require('linuxduino');

// Testing Serial readBytesUntil, setTimeout
(async() => {
  // Wait for wasm file
  await linuxduino.ready;

  var buff = Buffer.alloc(100);

  // Open Serial port
  Serial = new linuxduino.Serial();
  Serial.begin("/dev/ttyUSB0", 115200);
    
  console.log("Write Something (reads until letter x or timeout of 5 sec)...");

  Serial.setTimeout(5000);  // Set timeout of 5 seconds

  // Clean buffer
  buff.fill(0);

  // Read bytes until x is found or timeout
  buff = Serial.readBytesUntil('x', buff, 100);
  console.log("Recieved = ", buff);

  Serial.end();
})();

Run it

sudo node serial_readBytesUntil.js

C++

#include "Linuxduino.h"

// Testing Serial readBytesUntil, setTimeout
int main(void) {

    char buff[100];

    // Open Serial
    Serial.begin("/dev/ttyUSB0", 115200);
    
    printf("Write Something (reads until letter x or timeout of 5 sec)...\n");

    Serial.setTimeout(5000);  // Set timeout of 5 seconds

    // Clean buffer
    for (int i = 0; i<10; i++) {
        buff[i] = 0;
    }

    // Read bytes until x is found or timeout
    Serial.readBytesUntil('x', buff, 100);
    buff[99] = 0;
    printf("Recieved = %s\n", buff);

    Serial.end();

    return 1;
}

Run it

g++ serial_readBytesUntil.cpp -o serial_readBytesUntil -llxduino
sudo ./serial_readBytesUntil

← Serial.readString()→