| /Classwork/ECE4534 - Embedded Systems/PIC 27J13/pin_interrupts.c |
|---|
| 27,9 → 27,8 |
| void port_b_int_init() { |
| port_b_prev_state = 0x0F; |
| // Turn on internal pull-up for all port B pins |
| INTCON2bits.RBPU = 0;; |
| INTCON2bits.RBPU = 0; |
| // Set pins as inputs |
| TRISBbits.TRISB4 = 1; |
| TRISBbits.TRISB5 = 1; |
| 36,10 → 35,15 |
| TRISBbits.TRISB6 = 1; |
| TRISBbits.TRISB7 = 1; |
| LATBbits.LATB4 = 0; |
| LATBbits.LATB5 = 0; |
| LATBbits.LATB6 = 0; |
| LATBbits.LATB7 = 0; |
| // Turn on internal voltage pull-up |
| PORTBbits.RB4 = 1; |
| PORTBbits.RB5 = 1; |
| PORTBbits.RB6 = 1; |
| PORTBbits.RB7 = 1; |
| LATBbits.LATB4 = 1; |
| LATBbits.LATB5 = 1; |
| LATBbits.LATB6 = 1; |
| LATBbits.LATB7 = 1; |
| // Enable Port B interrupt |
| INTCONbits.RBIE = 1; |