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1  Using Arduino / Programming Questions / Re: uploading error on: January 22, 2012, 10:57:25 pm
Can you upload another sketch (such as blink)?

Yes, I can go back and forth between working and non-working versions.   I've stepped through the program commenting the temperature routine back in line-by-line and any time I make  a call to a OneWire function, I get that error.
2  Using Arduino / Programming Questions / uploading error on: January 22, 2012, 04:13:10 pm
Hello Forum (for the first time),

I am trying to do something very simple but have run into a problem that I cannot figure out.   I have adapted Ovidiu Predescu's TinyWebServer to build a internet-based door opener for our chicken coop.  Everything works great and it is ready to be installed. 

I also want to be able to measure the temperature inside the coop and report it when I make an http request.   I've added a DS18B20 sensor on digital pin 8 and run the sample sketch provided with the OneWire library and it runs fine. 

The problem comes when I combine the two sketches I get the following message:

>Problem uploading to board.
>Binary sketch size: 31320 bytes (of a 32256 byte maximum)
>avrdude: stk500_recv(): programmer is not responding

I thought it was a size issue because I have read here on the forums that the actual maximum is lower than 32256 but I have made the sketch smaller (by taking out the file upload routine from TinyWebServer) and had the same issue.  The code below is a version that has the OneWire code integrated into the temp_handler routine but I have also written it using a separate routine that returns a float.   That version fails only when I call the OneWire routine from within the temp_handler.

Anyone have any ideas?   It is getting to be well below -18 C here at night and I am tired of manually running out to close the coop door so I would like to get this thing installed soon!

You help will be much appreciated.


p.s.- My code was longer that 9500 characters so I deleted the routines that were unchanged (or only minor changes ) from Ovidiu's blink_led sketch.

// Chicken Coop 2.1

#include <SPI.h>
#include <Ethernet.h>
#include <Flash.h>
#include <SD.h>
#include <TinyWebServer.h>
#include <OneWire.h>

//Temperature chip i/o
OneWire ds(8); // on digital pin 8

// The LED attached in PIN 13 on an Arduino board.
const int ledPin = 7;
const int motor1Pin = 5;    // H-bridge leg 1 (pin 2, 1A)
const int motor2Pin = 6;    // H-bridge leg 2 (pin 7, 2A)
const int enablePin = 9;    // H-bridge enable pin

void activateMotor(boolean state) {
    ledState = state;
// set enablePin high so that motor can turn on:
      digitalWrite(enablePin, HIGH);

// Go up if ledState is low, go down of LED state is High
 if (ledState == 0) {
     digitalWrite(motor1Pin, HIGH);   // set leg 1 of the H-bridge low
     digitalWrite(motor2Pin, LOW);  // set leg 2 of the H-bridge high
    // if the switch is low, motor will turn in the other direction:
    else {
      digitalWrite(motor1Pin, LOW);  // set leg 1 of the H-bridge high
      digitalWrite(motor2Pin, HIGH);   // set leg 2 of the H-bridge low 
// turn off the H-Bridge to stop the motor
      digitalWrite(enablePin, LOW);

inline boolean getLedState() { return ledState; }

boolean file_handler(TinyWebServer& web_server);
boolean blink_led_handler(TinyWebServer& web_server);
boolean led_status_handler(TinyWebServer& web_server);
boolean index_handler(TinyWebServer& web_server);
boolean temp_handler(TinyWebServer& web_server);

TinyWebServer::PathHandler handlers[] = {
  // Micah put in the 'temp_handler'
  {"/", TinyWebServer::GET, &index_handler },
  {"/upload/" "*", TinyWebServer::PUT, &TinyWebPutHandler::put_handler },
  {"/blinkled", TinyWebServer::POST, &blink_led_handler },
  {"/temp", TinyWebServer::GET, &temp_handler },
  {"/ledstatus" "*", TinyWebServer::GET, &led_status_handler },
  {"/" "*", TinyWebServer::GET, &file_handler },

boolean temp_handler(TinyWebServer& web_server) {
  // Minimal Temp stuff from OneWire example
  byte i;
  byte present = 0;
  byte type_s;
  byte data[12];
  byte addr[8];
  float celsius, fahrenheit;
  if ( ! {
    Serial.println("No more addresses.");
    return false;
  Serial.print("ROM =");
  for( i = 0; i < 8; i++) {
    Serial.write(' ');
    Serial.print(addr[i], HEX);

  if (OneWire::crc8(addr, 7) != addr[7]) {
      Serial.println("CRC is not valid!");
      return false;
  // the first ROM byte indicates which chip
  switch (addr[0]) {
    case 0x10:
      Serial.println("  Chip = DS18S20");  // or old DS1820
      type_s = 1;
    case 0x28:
      Serial.println("  Chip = DS18B20");
      type_s = 0;
    case 0x22:
      Serial.println("  Chip = DS1822");
      type_s = 0;
      Serial.println("Device is not a DS18x20 family device.");
      return false;

  ds.write(0x44,1);         // start conversion, with parasite power on at the end
  delay(1000);     // maybe 750ms is enough, maybe not
  // we might do a ds.depower() here, but the reset will take care of it.
  present = ds.reset();;   
  ds.write(0xBE);         // Read Scratchpad

  Serial.print("  Data = ");
  Serial.print(" ");
  for ( i = 0; i < 9; i++) {           // we need 9 bytes
    data[i] =;
    Serial.print(data[i], HEX);
    Serial.print(" ");
  Serial.print(" CRC=");
  Serial.print(OneWire::crc8(data, 8), HEX);

  // convert the data to actual temperature

  unsigned int raw = (data[1] << 8) | data[0];
  if (type_s) {
    raw = raw << 3; // 9 bit resolution default
    if (data[7] == 0x10) {
      // count remain gives full 12 bit resolution
      raw = (raw & 0xFFF0) + 12 - data[6];
  } else {
    byte cfg = (data[4] & 0x60);
    if (cfg == 0x00) raw = raw << 3;  // 9 bit resolution, 93.75 ms
    else if (cfg == 0x20) raw = raw << 2; // 10 bit res, 187.5 ms
    else if (cfg == 0x40) raw = raw << 1; // 11 bit res, 375 ms
    // default is 12 bit resolution, 750 ms conversion time
  celsius = (float)raw / 16.0;
  fahrenheit = celsius * 1.8 + 32.0;
  Serial.print("  Temperature = ");
  Serial.print(" Celsius, ");
  Serial.println(" Fahrenheit");
  web_server << F("<html><body><h1>Hello Micah, the Temperature is </h1></body></html>\n");
  return true;

3  Community / Local Groups / Re: MN USA on: January 29, 2011, 02:08:40 pm
What's your background in electronics?

Minimal.   Just a hobbyist.  I've built a few kits but never had to design anything myself.  The forums here do seem to be a great resource.
4  Community / Local Groups / Re: MN USA on: January 28, 2011, 10:33:33 pm
I was just at axman this past weekend - got some stuff for my first arduino project.   Still haven't found a good retailer for IC's, etc.   Mail order is kind of a pain when you need an $0.89 part.

There is a Maker club in Minneapolis that has an arduino class coming up in February.

Sounds a little pricey but if my project doesn't go well maybe I will sign up for it.

5  Community / Local Groups / Re: MN USA on: January 27, 2011, 10:48:15 pm
twin cities close enough?
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