using buttons like serial command inputs

Using Arduino Programming Questions
1

Hello everyone

I´m trying to use these ph calibration code, but instead of inserting via serial the "CALIBRATION" or "EXIT" or "ACID:xx" or "ALKALI:xx" commands, what i want is to insert these commands with buttons, if i press button 1 , it enters "CALIBRATION" command, if i press button 2 it inserts predefined "ACID: 4.0" command....

The button libraries is not a problem for me, but i don´t know how to simulate the manual introduction of the commands in the serial with buttons.

Thank you very much!!!!

phcalib.ino.ino (8.18 KB)

2

This function in your program seems to be the part that interprets the Serial messages

byte uartParse()
{
  byte modeIndex = 0;
  if(strstr(receivedBuffer, "CALIBRATION") != NULL) 
      modeIndex = 1;
  else if(strstr(receivedBuffer, "EXIT") != NULL) 
      modeIndex = 4;
  else if(strstr(receivedBuffer, "ACID:") != NULL)   
      modeIndex = 2;  
  else if(strstr(receivedBuffer, "ALKALI:") != NULL)
      modeIndex = 3;
  return modeIndex;
}

and it seems to be called with this line of code

byte modeIndex = uartParse();

I reckon if you create an equivalent function that produces the same output when a button is pressed and call it like this

byte modeIndex = getKeypadValueConvertedToMode();

you will get the same functionality.

if you want to be able to use Serial and the keypad in the same program things will be a little more complex because you will need code to decide which to use.

...R

3

if you want to be able to use Serial and the keypad in the same program things will be a little more complex because you will need code to decide which to use.

I don't see why anything like that would be necessary. If the "acid" switch is pressed, the code that detects that could simply set receivedBuffer to "ACID:xx" (where xx is the appropriate value), and then call uartParse() and do the same thing(s) with the return value that the current code does.

4

PaulS:
I don't see why anything like that would be necessary. If the "acid" switch is pressed, the code that detects that could simply set receivedBuffer to "ACID:xx" (where xx is the appropriate value), and then call uartParse() and do the same thing(s) with the return value that the current code does.

But what happens if a message also arrives by Serial?

...R

5

Robin2:
But what happens if a message also arrives by Serial?

...R

I'm assuming that OP probably knows not to push a button while in the middle of sending serial data. I could be wrong.