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  1. #ifndef F_CPU
  2. #define F_CPU 16000000UL
  3. #endif
  4.  
  5. #include <avr/io.h>
  6. #include <util/delay.h>
  7. #include <inttypes.h>
  8.  
  9. #include "include/i2cmaster.h"
  10.  
  11. #define Dev24LC08B  0xA0
  12.  
  13. int main(void){
  14.    uint8_t readbyte;
  15.  
  16.    DDRB = 0x00;
  17.    PORTB = 0x0F;
  18.  
  19.    i2c_init();
  20.  
  21.    if( i2c_start(Dev24LC08B + I2C_WRITE) ){//check if device is present
  22.       i2c_stop();
  23.       return -1;
  24.    }else{
  25.       //write data to eeprom
  26.       i2c_write(0x00);//send address where to save data
  27.       i2c_write(0x01);//send data to write in the previous address
  28.       i2c_write(0x02);//send data to write in the next address
  29.       i2c_write(0x04);//send data to write in the next address
  30.       i2c_write(0x08);//send data to write in the next address
  31.       i2c_stop();
  32.  
  33.       //read data from eeprom
  34.  
  35.       //send write command to set the address where to start reading
  36.       i2c_start_wait(Dev24LC08B + I2C_WRITE);
  37.       i2c_write(0x00);
  38.  
  39.       //send a read command and read the bytes that were previously written to eeprom
  40.       i2c_rep_start(Dev24LC08B + I2C_READ);
  41.       readbyte = i2c_readAck();
  42.       PORTB = readbyte;
  43.       _delay_ms(500);
  44.       readbyte = i2c_readAck();
  45.       PORTB = readbyte;
  46.       _delay_ms(500);
  47.       readbyte = i2c_readAck();
  48.       PORTB = readbyte;
  49.       _delay_ms(500);
  50.       readbyte = i2c_readNak();
  51.       PORTB = readbyte;
  52.       _delay_ms(500);
  53.       i2c_stop();
  54.    }
  55.  
  56.    while(0x01);
  57.    return 0;
  58. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.c:5:20: fatal error: avr/io.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/PfsAFX
language:
C (gcc 8.3)
created:
8 years ago
visibility:
secret

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