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Create 4joy_adapter.ino

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Jarno Lehtinen 2018-12-06 20:29:14 +02:00 committed by GitHub
parent 1db7efcd59
commit ec517e86cb
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volatile uint8_t output1;
volatile uint8_t output2;
ISR(INT2_vect, ISR_NAKED) {
asm volatile(
" push r0 \n" // save register r0
" lds r0, output1 \n"
" out %[pin], r0 \n"
" pop r0 \n" // restore previous r0
" rjmp INT2_vect_part_2 \n" // go to part 2 for required prologue and epilogue
:: [pin] "I" (_SFR_IO_ADDR(PORTB)));
}
ISR(INT2_vect_part_2) {}
ISR(INT3_vect, ISR_NAKED) {
asm volatile(
" push r0 \n" // save register r0
" lds r0, output2 \n"
" out %[pin], r0 \n"
" pop r0 \n" // restore previous r0
" rjmp INT3_vect_part_2 \n" // go to part 2 for required prologue and epilogue
:: [pin] "I" (_SFR_IO_ADDR(PORTB)));
}
ISR(INT3_vect_part_2) {}
#define up1 (~PD & _BV(7)) // 6,PD7
#define down1 (~PC & _BV(6)) // 5,PC6
#define left1 (~PD & _BV(4)) // 4,PD4
#define right1 (~PD & _BV(0)) // 3,PD0
#define fire1 (~PD & _BV(1)) // 2,PD1
#define up2 (~PF & _BV(7)) // A0,PF7
#define down2 (~PF & _BV(6)) // A1,PF6
#define left2 (~PF & _BV(5)) // A2,PF5
#define right2 (~PF & _BV(4)) // A3,PF4
#define fire2 (~PE & _BV(6)) // 7,PE6
#define upC 1 // 15,PB1
#define downC 3 // 14,PB3
#define leftC 2 // 16,PB2
#define rightC 6 // 10,PB6
#define fire1C 4 // 8,PB4
#define fire2C 5 // 9,PB5
void setup() {
pinMode(5, INPUT_PULLUP); // pin5 (PC6) is input
pinMode(7, INPUT_PULLUP); // pin7 (PE6) is input
DDRB = 0xff; //all PB-ports are outputs
DDRF = 0; PORTF = 0xff; // all PF-ports are inputs with pullups
DDRD = 0; PORTD = B11010011; // all PD-ports are inputs with pullups (PD2,PD3,PD5 without pullup)
TIMSK0 = 0; // disable timer0 interrupts (Arduino Uno/Pro Micro millis() update ISR)
EICRA = B10110000; // INT2 – rising edge on RXD (Bxx11xxxx), INT3 - falling edge on TXD (B10xxxxxx)
EIMSK = B1100; // enable int2 (Bx1xx) and int3 (B1xxx)
//Serial.begin(115200);
}
uint8_t joy1, joy2, PB, PF, PD, PC, PE;
void loop() {
PB = PINB; PF = PINF; PD = PIND; PC = PINC; PE = PINE;
joy1 = 0; joy2 = 0;
if (up1) bitSet(joy1,upC);
if (down1) bitSet(joy1,downC);
if (left1) bitSet(joy1,leftC);
if (right1) bitSet(joy1,rightC);
if (up2) bitSet(joy2,upC);
if (down2) bitSet(joy2,downC);
if (left2) bitSet(joy2,leftC);
if (right2) bitSet(joy2,rightC);
if (fire1) { bitSet(joy1,fire1C); bitSet(joy2,fire1C); }
if (fire2) { bitSet(joy1,fire2C); bitSet(joy2,fire2C); }
output1 = joy1; output2 = joy2;
//here should be something that updates even if interrupts doesn't trigger
//Serial.print(joy1, BIN); Serial.print(" "); Serial.println(joy2, BIN); delay(100);
//delayMicroseconds(50);
}