| 0,0 → 1,84 |
|---|
| /* The processor calls these handlers when an interrupt is triggered */ |
| #include "maindefs.h" |
| #include "msg_queues.h" |
| #include <timers.h> |
| #include "timers.h" |
| #include "pwm.h" |
| |
| void timers_init() { |
| /*--------------------Timer Delay Formulas-------------------- */ |
| /* InitTMR0 = 256 - ( Delay * Frequency ) / ( 4* Prescaler) */ |
| /* Delay = (256 - InitTMR0 * Prescaler) / (Frequency / 4) */ |
| /* ----------------------------------------------------------- */ |
| |
| #ifdef _BASE_STATION |
| OpenTimer0(TIMER_INT_ON & T0_16BIT & T0_SOURCE_INT & T0_PS_1_16); |
| T0CONbits.TMR0ON = 0; // Timer 0 initially off |
| #endif |
| |
| // // Set timer 1 to overflow every two seconds |
| // OpenTimer1(TIMER_INT_ON & T1_16BIT_RW & |
| // T1_SOURCE_PINOSC & T1_PS_1_1 & |
| // T1_OSC1EN_ON & T1_SYNC_EXT_OFF, |
| // TIMER_GATE_OFF & TIMER_GATE_INT_OFF); |
| |
| #ifdef _REMOTE |
| // Open timer 2 for ECCP1 (PWM) |
| OpenTimer2(TIMER_INT_OFF & T2_PS_1_4 & T2_POST_1_1); |
| |
| // Open timer 3 for PWM IR signaling |
| OpenTimer3(TIMER_INT_ON & T3_16BIT_RW & T3_SOURCE_FOSC_4 & |
| T3_OSC1EN_OFF & T3_PS_1_1 & T3_SYNC_EXT_OFF, TIMER_GATE_OFF); |
| T3CONbits.TMR3ON = 0; // Timer 3 initially off |
| #endif |
| } |
| |
| // Interrupt handler for timer 0 |
| void timer0_interrupt_handler() { |
| MQ_sendmsg_ToMainFromLow(0, MSGTYPE_TIMER0, (void *) 0); |
| } |
| |
| void timer0_enable() { |
| T0CONbits.TMR0ON = 1; |
| } |
| |
| void timer0_disable() { |
| T0CONbits.TMR0ON = 0; |
| } |
| |
| // Interrupt handler for timer 1 |
| void timer1_interrupt_handler() { |
| // Set timer to overflow every 10ms |
| WriteTimer1(62259); |
| } |
| |
| void timer3_interrupt_handler() { |
| if (!pwm_on) { |
| // Turn on PWM |
| pwm_start(); |
| pwm_on = 1; |
| WriteTimer3(0xE500); // Send 38kHz pulses for 600us |
| } else { |
| // Turn off PWM |
| pwm_stop(); |
| pwm_on = 0; |
| WriteTimer3(0xE500); // Send low for 0.6ms |
| // WriteTimer3(0xD000); // Send low for 1ms |
| // WriteTimer3(0xA000); // Send low for 2ms |
| // WriteTimer3(0x1000); // Send low for 5ms |
| } |
| } |
| |
| void timer3_enable() { |
| // Enable timer and start PWM |
| T3CONbits.TMR3ON = 1; |
| pwm_start(); |
| pwm_on = 1; |
| } |
| |
| void timer3_disable() { |
| // Disable timer and stop PWM |
| T3CONbits.TMR3ON = 0; |
| pwm_stop(); |
| pwm_on = 0; |
| } |