int main(void)
{
uint8_t data;
LED_DDR |= (1<<LED_P); // Set LED pin as an output.
twiSlaveInit( SLAVE_ADRS ); // Initialize TWI hardware for Slave operation.
sei(); // Enable interrupts.
twiSlaveEnable(); // Enable the TWI interface to receive data.
while(1)
{
if( twiDataInReceiveBuffer() )
{
data = twiReceiveByte();
// If the data is 00, then turn OFF the LED. Turn it ON for any non-zero value.
if( data == 0)
{
LED_PORT &= ~(1<<LED_P); // Turn LED OFF.
}
else
{
LED_PORT |= (1<<LED_P); // Turn LED ON.
}
}
}
}
int main(void)
{
uint8_t count;
count = 0;
twiSlaveInit( SLAVE_ADRS ); // Initialize TWI hardware for Slave operation.
sei(); // Enable interrupts.
twiSlaveEnable(); // Enable the TWI interface to receive data.
while(1)
{
if( !twiDataInTransmitBuffer() )
{
twiTransmitByte( count ); // stuff count into TxBuf[]
++count; // inc for next value.
}
}
}
int main(void)
{
char louis;
/* All ports are outputs */
DDRD = 0xFF;
DDRC = 0xFF;
DDRB = 0xFF;
/* These are the Louie ports */
/*
set_bit(PORTB, ?); //0
set_bit(PORTD, 0); //1
set_bit(PORTB, ?); //2
set_bit(PORTD, 1); //3
set_bit(PORTB, ?); //4
set_bit(PORTD, 2); //5
set_bit(PORTD, 3); //6
set_bit(PORTB, ?); //7
set_bit(PORTC, 0); //8
set_bit(PORTC, 1); //9
*/
twiSlaveInit(0x17);
sei();
while (TRUE) {
if (twiDataInBuffer) {
switch (twiData[0]) {
/* Drive all flashers */
case 0:
PORTB = 0x0F;
PORTC = 0x0F;
PORTD = 0x05;
break;
/* Stop all flashers */
case 1:
PORTB = 0x00;
PORTC = 0x00;
PORTD = 0x00;
break;
/* Drive single flasher */
case 2:
louis = twiData[1];
if (louis == 0)
set_bit(PORTB, 0);
else if (louis == 1)
set_bit(PORTD, 0);
else if (louis == 2)
set_bit(PORTB, 1);
else if (louis == 3)
set_bit(PORTD, 1);
else if (louis == 4)
set_bit(PORTB, 2);
else if (louis == 5)
set_bit(PORTD, 2);
else if (louis == 6)
set_bit(PORTD, 3);
else if (louis == 7)
set_bit(PORTB, 3);
else if (louis == 8)
set_bit(PORTC, 0);
else if (louis == 9)
set_bit(PORTC, 1);
break;
/* Stop single flasher */
case 3:
louis = twiData[1];
if (louis == 0)
clear_bit(PORTB, 0);
else if (louis == 1)
clear_bit(PORTD, 0);
else if (louis == 2)
clear_bit(PORTB, 1);
else if (louis == 3)
clear_bit(PORTD, 1);
else if (louis == 4)
clear_bit(PORTB, 2);
else if (louis == 5)
clear_bit(PORTD, 2);
else if (louis == 6)
clear_bit(PORTD, 3);
else if (louis == 7)
clear_bit(PORTB, 3);
else if (louis == 8)
clear_bit(PORTC, 0);
else if (louis == 9)
clear_bit(PORTC, 1);
break;
}
TWCR = TWISLAVEACTIVEACK;
twiDataInBuffer = FALSE;
}
}
}
