/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.3 Standard
Automatic Program Generator
© Copyright 1998-2011 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project :
Version :
Date : 06/07/2014
Author : TOOFAN
Company :
Comments:
Chip type : ATmega32
Program type : Application
AVR Core Clock frequency: 8.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 512
*****************************************************/
#include <mega32.h>
// Alphanumeric LCD functions
#include <alcd.h>
// TWI functions
#include <twi.h>
// TWI Slave receive buffer
#define TWI_RX_BUFFER_SIZE 1
unsigned char twi_rx_buffer[TWI_RX_BUFFER_SIZE];
// TWI Slave transmit buffer
#define TWI_TX_BUFFER_SIZE 1
unsigned char twi_tx_buffer[TWI_TX_BUFFER_SIZE];
// TWI Slave receive handler
// This handler is called everytime a byte
// is received by the TWI slave
bool twi_rx_handler(bool rx_complete)
{
if (twi_result==TWI_RES_OK)
{
// A data byte was received without error
// and it was stored at twi_rx_buffer[twi_rx_index]
// Place your code here to process the received byte
// Note: processing must be VERY FAST, otherwise
// it is better to process the received data when
// all communication with the master has finished
}
else
{
// Receive error
// Place your code here to process the error
return false; // Stop further reception
}
// The TWI master has finished transmitting data?
if (rx_complete) return false; // Yes, no more bytes to receive
// Signal to the TWI master that the TWI slave
// is ready to accept more data, as long as
// there is enough space in the receive buffer
return (twi_rx_index<sizeof(twi_rx_buffer));
}
// TWI Slave transmission handler
// This handler is called for the first time when the
// transmission from the TWI slave to the master
// is about to begin, returning the number of bytes
// that need to be transmitted
// The second time the handler is called when the
// transmission has finished
// In this case it must return 0
unsigned char twi_tx_handler(bool tx_complete)
{
if (tx_complete==false)
{
// Transmission from slave to master is about to start
// Return the number of bytes to transmit
return sizeof(twi_tx_buffer);
}
// Transmission from slave to master has finished
// Place code here to eventually process data from
// the twi_rx_buffer, if it wasn't yet processed
// in the twi_rx_handler
// No more bytes to send in this transaction
return 0;
}
// Declare your global variables here
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// TWI initialization
// Mode: TWI Slave
// Match Any Slave Address: Off
// I2C Bus Slave Address: 0x0F
twi_slave_init(false,0x0F,twi_rx_buffer,sizeof(twi_rx_buffer),twi_tx_buffer,twi_rx_handler,twi_tx_handler);
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTA Bit 0
// RD - PORTA Bit 1
// EN - PORTA Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 16
lcd_init(16);
// Global enable interrupts
#asm("sei")
while (1)
{
// Place your code here
}
}
/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.3 Standard
Automatic Program Generator
© Copyright 1998-2011 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project :
Version :
Date : 06/07/2014
Author : TOOFAN
Company :
Comments:
Chip type : ATmega32
Program type : Application
AVR Core Clock frequency: 8.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 512
*****************************************************/
#include <mega32.h>
// Alphanumeric LCD functions
#include <alcd.h>
// TWI functions
#include <twi.h>
#include <delay.h>
// Declare your global variables here
unsigned char fi2c_read(char slave_address, char reg_address)
{
char data;
twi_master_trans(slave_address>>1, &reg_address, 1, &data, 1);
return data;
}
void fi2c_write(char slave_address, char reg_address, char data)
{
char tx_buf[2];
tx_buf[0] = reg_address;
tx_buf[1] = data;
twi_master_trans(slave_address>>1, &tx_buf[0], 2, 0, 0);
}
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// TWI initialization
// Mode: TWI Master
// Bit Rate: 100 kHz
twi_master_init(100);
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTA Bit 0
// RD - PORTA Bit 1
// EN - PORTA Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 8
lcd_init(8);
// Global enable interrupts
#asm("sei")
while (1)
{
// Place your code here
fi2c_write(0x0F,0b11111111,0b01010101);
delay_ms(1000);
}
}
interrupt [TWI] void twi_isr(void)
{
// Place your code here
}
twi_master_init(101);
interrupt [TWI] void twi_isr(void)
{
unsigned char status;
status = TWSR & 0xF8;
switch(status)
{
case 0x98:
TWCR=(1<<TWINT);break;
case 0xA8:
TWDR=0x44;
TWCR|=(1<<TWINT);
break;
}
TWCR|=(1<<TWINT);
}
while (1)
{
unsigned char a[3];
// Place your code here
twi_master_trans(0b10010000, 0, 0, a, 3);
lcd_puts(a);
delay_ms(1000);
}
}
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