hello,

why so complicated ?

numero : select the rotate switch

designed by “enc”

function below to get back the ascii for one rotate swich

“result”  must be declared as global ..

void rotSwitch(char numero) //Rotary encoder conversion to ASCII
{
if (encoder_positions[numero]< 27)
result= 65 + encoder_positions[numero]; 
else
result= 48 + encoder_positions[numero]-27;
}

Hello paulfjujo,
Thank you!  Well done.
 
William
 

Hello paulfjujo,
 
First experience working with rotary encoders.
 
I follow the method of converting letters and numbers; how does numero come into play?  How do I select rotary encoder.  Will be using four rotary encoders in project; result going to a quad alphanumeric display.
 
Have been unable display result to quad, alphanumeric display.   
 
Regards,
William
 
 

hello,

how does numero come into play?

numéro is only a parameter … it could be used to pass “enc” as parameter
 

void loop() 
{
for (uint8_t enc=0; enc<sizeof(found_encoders); enc++) 
{ 
if (found_encoders[enc] == false) continue;

int32_t new_position = encoders[enc].getEncoderPosition();
// did we move around?
if (encoder_positions[enc] != new_position) {
Serial.print("Encoder #");
Serial.print(enc);
Serial.print(" -> ");
//--------------------------------------- 
if (encoder_positions[enc]< 27)
result= 65 + encoder_positions[enc]; 
else
result= 48 + encoder_positions[enc]-27;
Serial.write(result); //ASCII Char code in decimal
encoder_positions[enc] = new_position;
// -------------------------------
// change the neopixel color, mulitply the new positiion by 4 to speed it up
encoder_pixels[enc].setPixelColor(0, Wheel((new_position*4) & 0xFF));
encoder_pixels[enc].show();
}
if (! encoders[enc].digitalRead(SS_SWITCH)) {
Serial.print("Encoder #");
Serial.print(enc);
Serial.println(" pressed");
}
}

}

Thsnk you paulfjujo,,
Going to give it a go; appreciate the help!
William

I have a value that is the decimal equivalent of an ASCII, upper case character.
Having been unable to display using:

char letter = char(result);
display.printChar(letter, 0);
//———————————————
Have also tried:  display.printChar(char(result), 0);

Code compiles; encoder_position[enc] value is captured, as well as new_position.  result is getting a value.  Still no display on digit 0 of display.  Serial.println(result); produces 84, Serial.write(result); produces T.

Gist of non-displaying code

William

hello,

Serial.println(result); //produces ascii value=84,

Serial.write(result);// produces ascii ‘T’. ..OK, Normal !

try with :
char letter =(char)result; // Cast int value (16bits) into a char value (8 bits)
you can also use :

display.printChar((char)result, 0); // i suppose result is numerique ‘0’ to ‘9’
display.printChar(‘O’, 1); // is it ‘O’ letter or zero value ‘0’ ?
display.printChar(‘O’, 2);
display.printChar(‘O’, 3);

Thank you paulfjujo!
 
Best Regards,
William