void TwoWire::begin(uint8_t address)
{
twi_setAddress(address);
twi_attachSlaveTxEvent(onRequestService);
twi_attachSlaveRxEvent(onReceiveService);
begin();
}
void twi_init_slave(uint8_t address)
{
twi_setAddress(address);
twi_attachSlaveTxEvent(onRequestService);
twi_attachSlaveRxEvent(onReceiveService);
twi_init_master();
}
void TwoWire::begin(uint8_t address)
{
begin();
// Likewise, in the other begin function, this will prevent
// the attach events being called more than once.
if (beginCount == 1) { // First init
twi_setAddress(address);
twi_attachSlaveTxEvent(onRequestService);
twi_attachSlaveRxEvent(onReceiveService);
}
}
void TwoWire::begin(uint32_t speed, uint8_t address)
{
rxBufferIndex = 0;
rxBufferLength = 0;
txBufferIndex = 0;
txBufferLength = 0;
twi_init(speed);
twi_setAddress(address);
twi_attachSlaveTxEvent(onRequestService);
twi_attachSlaveRxEvent(onReceiveService);
}
// main
// ===============================================================
// ===============================================================
// ===============================================================
// ===============================================================
int main(void)
{
uint8_t i1, i2, i3, i4;
uint8_t bus_address;
uint8_t rx_type;
uint8_t k_row;
k_row = 0;
refresh_row = 0;
scan_keypad = 0;
key_read = key_write = 0;
rx_read = rx_write = 0;
intensity_index = 15;
reply_type = _REPLY_KEYPAD;
DDRB = 0xfe; // input pin 1, outputs else
DDRC = 0xff; // output
DDRD = 0xff; // output
bus_address = ADDR; // initialized value, default 100 or from makefile
// we will overwrite this with the value stored in eeprom
// led refresh interrupt
TCCR0A = 0;
TCCR0B = (1<<CS02);// | (1<<CS00); // prescale io/256
TIMSK0 = (1 << OCIE0A) | (1 << OCIE0B);// | (1 << TOIE0);
OCR0A = LED_REFRESH_RATE;
OCR0B = ints[intensity_index];
TCCR2A = 0;
TCCR2B = (1<<CS22) | (1<<CS21); // prescale io/256
TIMSK2 = (1 << OCIE2A) | (1 << OCIE2B);// | (1 << OCIE0B);// | (1 << TOIE0);
OCR2A = d1ints[intensity_index];
OCR2B = d2ints[intensity_index];
// keypad interrupt
TCCR1A = 0;
TCCR1B = (1<<CS12) | (1<<CS10);
TIMSK1 = (1<<OCIE1A);
OCR1A = KEYPAD_REFRESH_RATE;
buttonInit();
sei();
twi_init();
twi_setAddress(bus_address);
twi_attachSlaveRxEvent(processRx);
twi_attachSlaveTxEvent(processTx);
// loop
// ===============================================================
// ===============================================================
while(1) {
if(scan_keypad) {
//for(k_row=0;k_row<8;k_row++) {
button_last[k_row] = button_current[k_row];
//_delay_us(5);
PORTB |= B2_KCOL_SH;
_delay_us(5);
for(i1=0;i1<8;i1++) {
i2 = !(PINB & B0_KCOL_Q);
PORTB |= B1_KCOL_CLK;
//_delay_us(2);
PORTB &= ~B1_KCOL_CLK;
if (i2)
button_current[k_row] |= (1 << i1);
else
button_current[k_row] &= ~(1 << i1);
buttonCheck(k_row,i1);
if(button_event[k_row] & (1<<i1)) {
button_event[k_row] &= ~(1<<i1);
key_changes[key_write]= ((!i2)<<7) + ((7-i1)*8) + (k_row);
key_write++;
key_write %= 128;
}
}
PORTB &= ~B2_KCOL_SH;
k_row++;
k_row %= 8;
PORTC = k_row;//(PINC | 0x07) | k_row;
scan_keypad = 0;
}
if(rx_read != rx_write) {
rx_type = rx[rx_read];
if(rx_type == _QUERY) {
i1 = 0;
} else if(rx_type == _SLEEP) {
TIMSK0 = 0;
TIMSK1 = 0;
TIMSK2 = 0;
PORTD = 0;
} else if(rx_type == _WAKE) {
TIMSK0 = (1 << OCIE0A) | (1 << OCIE0B);
TIMSK1 = (1<<OCIE1A);
} else if(rx_type == _KEYPAD_REQUEST) {
reply_type = _REPLY_KEYPAD;
} else if(rx_type == _LED_SET0) {
// _LED_SET0 //////////////////////////////////////////////
i3 = rx[(rx_read + 1)%128];
i1 = i3 & 0x0f;
i2 = i3 >> 4;
lights[i1] &= ~(1<<i2);
} else if(rx_type == _LED_SET1) {