| 0,0 → 1,43 |
|---|
| #include <xc.h> |
| #include <plib.h> |
| #include "defines.h" |
| #include "TIMER5.h" |
| |
| static TIMER_DATA *timer_data_ptr; |
| |
| void TIMER5_Init(TIMER_DATA *data, void (*callback)(void), unsigned int time_us) { |
| if (data != NULL) // if ptr is null, use existing data |
| timer_data_ptr = data; |
| |
| timer_data_ptr->callback_function = callback; |
| |
| // Note: PR5 is 16-bit wide! (max time_us = 13107) |
| int time = 5 * time_us; |
| |
| INTDisableInterrupts(); |
| |
| T5CON = 0x0040; // Prescaler at 1:16, clock from peripheral clock |
| Nop(); |
| TMR5 = 0x0; // Clear timer register |
| PR5 = time; // Load period register |
| IPC5SET = 0x00000011; // Set priority level = 4, sub-priority level = 1 |
| IFS0CLR = 0x00100000; // Clear timer interrupt flag |
| IEC0SET = 0x00100000; // Enable timer interrupt |
| |
| INTEnableInterrupts(); |
| } |
| |
| void TIMER5_Start(void) { |
| T5CONSET = 0x8000; // Start timer |
| } |
| |
| void TIMER5_Stop(void) { |
| T5CONCLR = 0x8000; // Stop timer |
| } |
| |
| void __ISR(_TIMER_5_VECTOR, ipl4) __TIMER_5_Interrupt_Handler(void) { |
| // Call the saved callback function |
| (*timer_data_ptr->callback_function)(); |
| |
| IFS0CLR = 0x00100000; // Clear the timer interrupt flag |
| } |