hello everyone
i have a upload problem with the Arduino Duemilanove ATmega168

when i tried to upload scripts, it is showing me like that

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

Problem Solved !
Thanks everyone

thanks

Hello

 I've uploaded a program on the MCU, but i want to upload another totally different program on the MCU, how can i delete the previous one?

 Thanks a lot.  

Help
it is killing me

here is my code

Code:

#include <byteordering.h>
#include <fat.h>
#include <FAT16.h>
#include <fat_config.h>
#include <partition.h>
#include <partition_config.h>
#include <sd-reader_config.h>
#include <sd_raw.h>
#include <sd_raw_config.h>

FAT TestFile;      //This will be the file we manipulate in the sketch
char buffer[512];  //Data will be temporarily stored to this buffer before being written to the file
int read_size=0;   //Used as an indicator for how many characters are read from the file
int count=0;       //Miscellaneous variable

void setup()
{
  Serial.begin(9600);  //Initiate serial communication at 9600 bps

  TestFile.initialize();  //Initialize the SD card and the FAT file system.
  Serial.println("Starting...");
  TestFile.create_file("Sample.txt");  //Create a file on the SD card named "Read_File_Test.txt"
                                       //NOTE: This function will return a 0 value if it was unable to create the file.
  TestFile.open();  //Now that the file has been created, open it so we can write to it.
}

void loop()
{
  TestFile.write("This is test data.");  //using the write function will always write to the beginning of the file.
                                         // Here we add some text to the file.
  TestFile.close();  //We are done writing to the file for now. Close it for later use.

  while(1){
    TestFile.open();  //Open the file. When the file is opened we will be looking at the beginning of the file.
    read_size=TestFile.read(buffer); //Read the contents of the file. This will only read the amount of data specified
                                    // by the size of 'buffer.'

    Serial.println(read_size, DEC);  //Print the number of characters read by the read function.
    for(int i=0; iSerial.print(buffer[i], BYTE);  //Print out the contents of the buffer.
    }
    Serial.println();

    sprintf(buffer, "%d", count++); //Now we'll use the buffer to write data back to the file.
                                   // Here's we'll only add one value to buffer, the 'count' variable.
    TestFile.write(buffer);         //Write the new buffer to the end of the file
    TestFile.close();               //Close the file for later use.

    delay(1000);  //Wait one second before repeating the loop.
  }
}

Hello everyone
i have a problem with the sdcard library
i am using the fat16 and sd_raw library
when i tried to compile the code, it showed me this

Code:

E:\Arduino\arduino-0018\libraries\SDcard\arduino sd card example.cpp:161: error: 'DEC' was not declared in this scope

how to declare the DEC in the library ?

Thanks a lot

"unconnectedPin" is something you have to define.
Hopefully, you'll have a spare analogue input.

but i just want to print the value
here's the situation
i don't have any input, if i would like to print the value randomly between 400 and 500, is it possible to do it ?

Code:

void setup()
{
Serial.begin(9600);
}
void loop()
{
  int x = 2;
  double y = x * 10;
  if (y > 3) Serial.println("400" or "500"); // this is the value that i would like to print, 400 or 500, when the value of y is larger than 3.

  }

it is showing me this
 In function 'void loop()':
error: 'unconnectedPin' was not declared in this scop

ic
how about the problem, do you know what it is ?

How about this one

if ((x < 10) && ( x < 5)) Serial.println("400" || "500");

i would like to print the value randomly, sometimes 400 or 500

could this code on the above ?

and i have a problem with uploading the code
when i uploaded a new code once, i attempted to uploade another one
it told me that the usb port is being used, i can't upload again unless i restart the computer....

Thanks Groove

thanks Groove

i have changed the subject, sorry about that

hello everyone

can i set a number that if the number is in a specific range, and then show the specific value ?

like
if ( 400 < x < 500) Serial.println("450");
could i use this one ?

it is showing this error






C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\SDcard/sd_raw_config.h:86:6: error: #error "no sd/mmc pin mapping available!"

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/fat.h:89: error: 'offset_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/fat.h:117: error: 'offset_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/fat.h:118: error: 'offset_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:83: error: typedef 'device_read_t' is initialized (use __typeof__ instead)

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:83: error: 'offset_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:83: error: expected primary-expression before '*' token

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:83: error: 'buffer' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:83: error: expected primary-expression before 'length'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:92: error: 'offset_t' has not been declared

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: typedef 'device_read_interval_t' is initialized (use __typeof__ instead)

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: 'offset_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: expected primary-expression before '*' token

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: 'buffer' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: expected primary-expression before 'interval'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: expected primary-expression before 'length'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: expected primary-expression before 'callback'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:111: error: expected primary-expression before 'void'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:119: error: typedef 'device_write_t' is initialized (use __typeof__ instead)

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:119: error: 'offset_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:119: error: expected primary-expression before 'const'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:119: error: expected primary-expression before 'length'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:129: error: 'offset_t' has not been declared

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: typedef 'device_write_interval_t' is initialized (use __typeof__ instead)

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: 'offset_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: expected primary-expression before '*' token

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: 'buffer' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: expected primary-expression before 'length'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: expected primary-expression before 'callback'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:148: error: expected primary-expression before 'void'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:161: error: 'device_read_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:168: error: 'device_read_interval_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:175: error: 'device_write_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:182: error: 'device_write_interval_t' does not name a type

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: 'device_read_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: 'device_read_interval_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: 'device_write_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: 'device_write_interval_t' was not declared in this scope

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: expected primary-expression before 'index'

C:\Users\Max\Documents\Arduino\Arduino\arduino-0018\libraries\FAT/partition.h:200: error: initializer expression list treated as compound expression

 In function 'void setup()':
Bad error line: -2

i am sorry, here is the code

i have trying to save the value of v that determined by the code

Code:

#include <sd-reader_config.h>
#include <sd_raw.h>
#include <sd_raw_config.h>
#include <byteordering.h>
#include <fat.h>
#include <FAT16.h>
#include <fat_config.h>
#include <partition.h>
#include <partition_config.h>
#define FREQ_PIN 3
#include <LiquidCrystal.h>

FAT TestFile;      //This will be the file we manipulate in the sketch
char buffer[512];  //Data will be temporarily stored to this buffer before being written to the file
int read_size=0;   //Used as an indicator for how many characters are read from the file
int count=0;       //Miscellaneous variable

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup() {
  pinMode(FREQ_PIN, INPUT);
 lcd.begin(16, 2);
 TestFile.initialize();
 TestFile.create_file("Velocity Record.txt");
 TestFile.open();
 }

void loop()
{
unsigned long t1 = pulseIn(FREQ_PIN, HIGH);// Time how long it takes to go HIGH again
unsigned long t2 = pulseIn(FREQ_PIN, LOW); // and how long it takes to go low again.
 double t = t1 + t2;
         double f = 1000000.0/t;
           double w = 2 * 3.14 * f;
           double v = w * 0.05;
       lcd.setCursor(0,0);
         lcd.println(v);
         delay(2000);
TestFile.write("The velocity of the wheel");  //using the write function will always write to the beginning of the file.
                                         // Here we add some text to the file.
                                        // Here we add some text to the file.
  TestFile.close();  //We are done writing to the file for now. Close it for later use.

  while(1)
    TestFile.open();  //Open the file. When the file is opened we will be looking at the beginning of the file.
    read_size=TestFile.read(buffer); //Read the contents of the file. This will only read the amount of data s
read_size=TestFile.read(buffer); //Read the contents of the file. This will only read the amount of data specified
                                    // by the size of 'buffer.'
sprintf(buffer, "%d", count++); //Now we'll use the buffer to write data back to the file.
                                   // Here's we'll only add one value to buffer, the 'count' variable.
    TestFile.write(buffer);         //Write the new buffer to the end of the file
    TestFile.close();               //Close the file for later use.

    delay(1000);  //Wait one second before repeating the loop.

}