I'm having a hard time including interrupts into my cases for a traffic light code. The interrupts are supposed to start a sequence of events but my brain is just fried on how to go about it.

 

Welcome to the forum. Show us what you got so far.

 

Welcome to the forum. Show us what you got so far.

ISR(INT0_vect) {
uint8_t data = SPI_Read_Command(1, 0x13);
if ((data & 0b00000001) == 0b00000001) { // BW Southbound Main Green S0
SPI_Send_Command(1,0x12, 0b00100000);
}
if ((data & 0b00000010) == 0b00000010) { // BW Southbound Turn Green S1
SPI_Send_Command(1,0x12, 0b00000100);
}
if ((data & 0b00000100) == 0b00000100) { // BW Southbound Tram White . S2
SPI_Send_Command(1,0x12, 0b00000001);
}
if ((data & 0b00001000) == 0b00001000) { // BW Northbound Bus Lane S3
SPI_Send_Command(2,0x12, 0x0b00010000);
}
if ((data & 0b00010000) == 0b00010000) { // BW Northbound Main Green . S4
SPI_Send_Command(2,0x12, 0b00100000);
}
if ((data & 0b00100000) == 0b00100000) { // BW Northbound TRAM White S5
SPI_Send_Command(2,0x12, 0b00000100);
}
if ((data & 0b01000000) == 0b01000000) { // BW Northbound Main Green S6
SPI_Send_Command(2,0x13, 0b00100000);
}
if ((data & 0b10000000) == 0b10000000) { // BW Northbound Main Green S7
SPI_Send_Command(2,0x13, 0b00000001);

}
SPI_Send_Command(2,0x12, 0b00000001);
}
// if ((data & 0xff) == 0xff) { // BW Southbound Main
// SPI_Send_Command(1,0x12, 0xff);
// } else {
// SPI_Send_Command(1,0x12,0x00);
// }
// }





ISR(INT1_vect) {
uint8_t data = SPI_Read_Command(2, 0x13);


// if ((data & 0x0f) == 0x0f) {
// //LCD_PosnWrite(addr, 0x49, "All ON ", 7);
// SPI_Send_Command(2, 0x12, 0xff);
// SPI_Send_Command(2, 0x13, 0xf0);
// } else { // turn off LEDs when button is pressed
// //LCD_PosnWrite(addr, 0x49, "EXP B ", 7);
// SPI_Send_Command(2, 0x12, 0x00);
// SPI_Send_Command(2, 0x13, 0x00);
// }
}

ISR(PCINT2_vect) {
if ((PIND & 0xf0) == 0xf0) {
//LCD_PosnWrite(addr, 0x49, "All ON ", 7);
PORTC |= 0b00001110;
} else {
//LCD_PosnWrite(addr, 0x49, "PORT D ", 7);
PORTC &= 0b11110001;
}
}



/*
* Main routine. Run the tests in sequence.
*/
int main(void) {
uint32_t end_time;
uint32_t now_ms;
//uint8_t input;

// run setups
setup_Ports();
setup_Timer0();
setup_AtoD();
setup_I2C();
setup_SPI();
setup_interrupts();
if (I2C_CheckAddress(0x27)) {
addr = 0x27;
} else if (I2C_CheckAddress(0x3F)) {
addr = 0x3F;
} else if (I2C_CheckAddress(0x20)) {
addr = 0x20;
}
do_LCD(addr);
sei();

// turn on all LEDs
SPI_Send_Command(1, 0x12, 0x00);
SPI_Send_Command(2, 0x12, 0x00);
SPI_Send_Command(2, 0x13, 0x00);
PORTC |= 0b00001110;



while (1) {


//

// run the buzzer for half a second
LCD_PosnWrite(addr, 0x49, "Buzzer ", 7);

PORTB |= 0b00000010;
now_ms = cur_ms;
end_time = cur_ms + 500;
//LCD_quad(addr, 0x00, cur_ms);
//LCD_quad(addr, 0x40, end_time);
while (end_time != cur_ms) {
if (now_ms != cur_ms) {
// another ms has passed, toggle the buzzer
now_ms = cur_ms;
PORTB ^= 0x02;
}
}
PORTB &= 0b11111101;

// show Pot changes on LCD for 4 seconds
LCD_PosnWrite(addr, 0x49, "Pot ", 7);
end_time = cur_ms + 4000;
while (cur_ms < end_time) {
LCD_hex(addr, 0x09, cur_AtoD);
}
}


}

 

ISR(INT0_vect) {
uint8_t data = SPI_Read_Command(1, 0x13);
if ((data & 0b00000001) == 0b00000001) { // BW Southbound Main Green S0
SPI_Send_Command(1,0x12, 0b00100000);
}
if ((data & 0b00000010) == 0b00000010) { // BW Southbound Turn Green S1
SPI_Send_Command(1,0x12, 0b00000100);
}
if ((data & 0b00000100) == 0b00000100) { // BW Southbound Tram White . S2
SPI_Send_Command(1,0x12, 0b00000001);
}
if ((data & 0b00001000) == 0b00001000) { // BW Northbound Bus Lane S3
SPI_Send_Command(2,0x12, 0x0b00010000);
}
if ((data & 0b00010000) == 0b00010000) { // BW Northbound Main Green . S4
SPI_Send_Command(2,0x12, 0b00100000);
}
if ((data & 0b00100000) == 0b00100000) { // BW Northbound TRAM White S5
SPI_Send_Command(2,0x12, 0b00000100);
}
if ((data & 0b01000000) == 0b01000000) { // BW Northbound Main Green S6
SPI_Send_Command(2,0x13, 0b00100000);
}
if ((data & 0b10000000) == 0b10000000) { // BW Northbound Main Green S7
SPI_Send_Command(2,0x13, 0b00000001);

}
SPI_Send_Command(2,0x12, 0b00000001);
}
// if ((data & 0xff) == 0xff) { // BW Southbound Main
// SPI_Send_Command(1,0x12, 0xff);
// } else {
// SPI_Send_Command(1,0x12,0x00);
// }
// }





ISR(INT1_vect) {
uint8_t data = SPI_Read_Command(2, 0x13);


// if ((data & 0x0f) == 0x0f) {
// //LCD_PosnWrite(addr, 0x49, "All ON ", 7);
// SPI_Send_Command(2, 0x12, 0xff);
// SPI_Send_Command(2, 0x13, 0xf0);
// } else { // turn off LEDs when button is pressed
// //LCD_PosnWrite(addr, 0x49, "EXP B ", 7);
// SPI_Send_Command(2, 0x12, 0x00);
// SPI_Send_Command(2, 0x13, 0x00);
// }
}

ISR(PCINT2_vect) {
if ((PIND & 0xf0) == 0xf0) {
//LCD_PosnWrite(addr, 0x49, "All ON ", 7);
PORTC |= 0b00001110;
} else {
//LCD_PosnWrite(addr, 0x49, "PORT D ", 7);
PORTC &= 0b11110001;
}
}



/*
* Main routine. Run the tests in sequence.
*/
int main(void) {
uint32_t end_time;
uint32_t now_ms;
//uint8_t input;

// run setups
setup_Ports();
setup_Timer0();
setup_AtoD();
setup_I2C();
setup_SPI();
setup_interrupts();
if (I2C_CheckAddress(0x27)) {
addr = 0x27;
} else if (I2C_CheckAddress(0x3F)) {
addr = 0x3F;
} else if (I2C_CheckAddress(0x20)) {
addr = 0x20;
}
do_LCD(addr);
sei();

// turn on all LEDs
SPI_Send_Command(1, 0x12, 0x00);
SPI_Send_Command(2, 0x12, 0x00);
SPI_Send_Command(2, 0x13, 0x00);
PORTC |= 0b00001110;



while (1) {


//

// run the buzzer for half a second
LCD_PosnWrite(addr, 0x49, "Buzzer ", 7);

PORTB |= 0b00000010;
now_ms = cur_ms;
end_time = cur_ms + 500;
//LCD_quad(addr, 0x00, cur_ms);
//LCD_quad(addr, 0x40, end_time);
while (end_time != cur_ms) {
if (now_ms != cur_ms) {
// another ms has passed, toggle the buzzer
now_ms = cur_ms;
PORTB ^= 0x02;
}
}
PORTB &= 0b11111101;

// show Pot changes on LCD for 4 seconds
LCD_PosnWrite(addr, 0x49, "Pot ", 7);
end_time = cur_ms + 4000;
while (cur_ms < end_time) {
LCD_hex(addr, 0x09, cur_AtoD);
}
}


}

It's more so with isr(int0)