converting int or byte to ascii

Projects Programming
37

Demonstrating println problem.
Here we go:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX
char string[] = "AT\r\n";
void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(115200);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  mySerial.begin(115200);
  Serial.println("arduino");
  for (byte i = 0; i <= strlen(string) - 1; i++) {
    mySerial.write(string[i]);
    Serial.print(string[i], DEC);
    Serial.print('\t');
    Serial.println(string[i]);
    delay(1);
  }
  //mySerial.write("AT");
  Serial.println("Esp");
}

void loop() { // run over and over
  while (mySerial.available()) {
    Serial.write(mySerial.read());
  }
}

output:

arduino
65	A
84	T
13	

10	

Esp
AT

OK

now with serial.print

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX
//char string[] = "AT\r\n";
void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(115200);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  mySerial.begin(115200);
  Serial.println("arduino");
  mySerial.println("AT");
  //delay(100);
  //mySerial.write("AT");
  Serial.println("Esp");
}

void loop() { // run over and over
  while (mySerial.available()) {
    Serial.write(mySerial.read());
  }
}

output:

arduino
Esp
A⸮⸮⸮

and with 100ms delay added after serial.print

arduino
Esp
A⸮⸮⸮

exact same output.