Wait for serial response 'OK' after each line in while loop

Projects Programming
1

Long time voyeur, first time poster...

I can usually find my solution by bumping my head into the wall a few time, but this time I'm stumped. I'm trying to send this Serial.write command in a while loop, but I can't figure out how to wait for a response after each line is sent. This is complete dump of data here:

// copy file to serial port
int16_t n;
uint8_t buf[7];// nothing special about 7, just a lucky number.
while ((n = myFile.read(buf, sizeof(buf))) > 0) {
for (uint8_t i = 0; i < n; i++) Serial.write(buf*) ;*

  • }*
    My goal is to wait for a response of 'ok' after each line in order to send the next one until they have all been sent.
    Any help is greatly appreciated!
3

Thank you!

4

Much better design would be to put the read and write into two separate functions and use a variable to keep track of whether a reply is received. Something like this pseudo code

void loop() {
  receiveStuff();
  sendStuff();
}

void receiveStuff() {
   // code for receiving
   if (all the stuff is received) {
      receivedOK = true;
   }
}

void sendStuff() {
   if (receivedOK == true) {
        receivedOK = false;
        // code to send stuff
   }
}

...R

5

What happens if the device responds "KO", instead? If you block waiting for "OK", you'll be resetting the Arduino a lot.