AVR Freaks

Not enough info for us to help, start by showing us...

1) you AVRDUDE command line (copy/paste, do not type)

 

 

2) AT09?  Attiny9?  (if so, then what arduino core are you using? or bootloader s/w?) Show your schematic including how you connect it to your serial interface, or at least a clear picture of the setup

ki0bk wrote:

 

 

At this point, it's not even in the circuit; that's just why the sketch has serial commands at all.  I have SPST switches to ground on D3 and D4, and LEDs with 330 Ohm limiters on D9 & D10.  But that's not the problem; the circuit works and they do their thing.

 

The problem is that I cannot put *any* other sketch onto it, and this sketch survives and does its thing in spite of my efforts to overwrite it.

 

ki0bk wrote:

3) show us the sketch that is running on the AT09 and the one your trying to upload to it.

 

I'm not running on the AT09; it was on there there to play with bluetooth and serial.  (Ultimately, I expect to use  the AT09 or some such as a controller, but right now I'm still trying to get the basics going . . .)

 

The controller is a chinese nano clone, with a 328p and programmed through the mini usb connector.

 

The sketch that won't go away is 

 

#include <SoftwareSerial.h>

//use 11 & 12for RX & TX


int off3 = 0;
int off4 = 0;

int btTx = 12;
int btRx = 11;

SoftwareSerial btSerial(btTx, btRx);


void setup() {
  // put your setup code here, to run once:
  // buttons on 3 & 4
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);

  // LED on 9 & 10
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);

  Serial.begin(9600);
  while (!Serial) {};

  Serial.println("***splat***!");

  btSerial.begin(9600);

  Serial.println("***wham***!");



}

void loop() {


  if (btSerial.available()) {
    //  Serial.println("Data coming:");
    Serial.write(btSerial.read());
  }

  if (Serial.available()) {
    //Serial.println("Sending ");
    btSerial.write(Serial.read());

  }

  if ((digitalRead(3) == LOW) && (millis() > off3)) {

    off3 = millis() + 1000;
    digitalWrite(10, HIGH);
    // Serial.print("button 3 ");
    //Serial.println(off3);
    btSerial.write("AT\n");



  }

  if ((digitalRead(4) == LOW) && (millis() > off4)) {

    off4 = millis() + 1000;
    digitalWrite(9, HIGH);
    // Serial.print("button 4 ");
    //Serial.println(off4);
    btSerial.write("AT");



  }

  if (millis() > off3) {
    digitalWrite(10, LOW);
  };
  if (millis() > off4) {
    digitalWrite( 9, LOW);
  };

}

 

I know that the sketch is running, as the LEDs indeed come on for about a second when their corresponding buttons are pushed.  I also get the splat/wham messages on the IDE serial console.

 

There isn't even a particular sketch that I want on it that is the issue.  I've tried both the blank sketch that the editor comes up with, and this triviality:

 

void setup() {
  // put your setup code here, to run once:
 Serial.begin(9600);
  while (!Serial) {};

  Serial.println("***splat***!");
}

void loop() {
  // put your main code here, to run repeatedly:

}

IN both cases, all 10 attempts to write are made, with all 10 "not in sync:" responses, faster than my eyes can follow. (and, now that I think of it, isn't there supposed to be a wait of some tens of milliseconds between?)

 

I've tried holding down the reset button while inserting USB, holding it until compile, and every variation of this that I can think of (most of which aren't really variations), and it stubbornly stays put.

 

My working assumption is that when I initiate the serial console to 9600, this is somehow blocking the side coming in at a higher speed.

Thanks

 

hawk