160 lines
5.0 KiB
C
160 lines
5.0 KiB
C
#include "fan_speeeed.h"
|
|
#include "uart.h"
|
|
|
|
uint16_t timer_period_ms = 1;
|
|
uint16_t fan_speed;
|
|
volatile uint16_t falling_edge_counter = 0;
|
|
#define MAX_PER 0x50
|
|
|
|
void TCA0_init() {
|
|
|
|
//code
|
|
PORTMUX.TCAROUTEA = PORTMUX_TCA0_PORTD_gc;
|
|
// port d ??? why
|
|
PORTD.DIR = PIN0_bm;
|
|
//code
|
|
//TCA0.SINGLE.PERBUF = MAX_PER;
|
|
TCA0.SINGLE.PERBUF = (F_CPU * (1 / timer_period_ms) / 1024); /* F_CPU * F_IRQ / TCA_prescaler */
|
|
TCA0.SINGLE.CMP0BUF = MAX_PER/2;
|
|
TCA0.SINGLE.CTRLB = TCA_SINGLE_CMP0EN_bm | 0x03;
|
|
TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc | TCA_SINGLE_ENABLE_bm;
|
|
|
|
|
|
//TCA0.SINGLE.INTCTRL = TCA_SINGLE_OVF_bm;
|
|
//TCA0.SINGLE.CTRLA = TCA_SINGLE_ENABLE_bm | TCA_SINGLE_CLKSEL_DIV1024_gc; /* Sysclk /1024 */
|
|
//TCA0_update_period_ms();
|
|
}
|
|
|
|
void TCA0_update_period_ms() {
|
|
TCA0.SINGLE.PERBUF = (F_CPU * (1 / timer_period_ms) / 1024); /* F_CPU * F_IRQ / TCA_prescaler */
|
|
}
|
|
|
|
uint16_t RPM_calculation(uint16_t test, uint16_t time) {
|
|
fan_speed = (test / time)*6000 * 3;
|
|
falling_edge_counter = 0;
|
|
printf("%u", fan_speed);
|
|
return fan_speed;
|
|
}
|
|
|
|
void PORT_init() {
|
|
//compare or capture
|
|
TCB3.CCMP = 0x00;
|
|
//count
|
|
TCB3.CNT = 0x00;
|
|
|
|
PORTA.IN = PIN5_bm;
|
|
PORTA.PIN5CTRL = PORT_PULLUPEN_bm;
|
|
|
|
//PORTD.PIN2CTRL = PORT_ISC_FALLING_gc | 0b01000000;
|
|
// TCB3.CTRLB =0<< TCB_ASYNC_bp /* Asynchronous Enable: disabled */|0<< TCB_CCMPEN_bp /* Pin Output Enable: disabled */|0<< TCB_CCMPINIT_bp /* Pin Initial State: disabled */| TCB_CNTMODE_FRQ_gc;/* Input Capture Frequency measurement */
|
|
// TCB3.EVCTRL =1<< TCB_CAPTEI_bp /* Event Input Enable: enabled */|0<< TCB_EDGE_bp /* Event Edge: disabled */|0<< TCB_FILTER_bp;/* Input Capture Noise Cancellation Filter: disabled */
|
|
// TCB3.INTCTRL =1<< TCB_CAPT_bp /* Capture or Timeout: enabled */|0<< TCB_OVF_bp;/* OverFlow Interrupt: disabled */
|
|
// TCB3.CTRLA = TCB_CLKSEL_DIV1_gc /* CLK_PER */|1<< TCB_ENABLE_bp /* Enable: enabled */|0<< TCB_RUNSTDBY_bp /* Run Standby: disabled */|0<< TCB_SYNCUPD_bp /* Synchronize Update: disabled */|0<< TCB_CASCADE_bp;/* Cascade Two Timer/Counters: disabled */
|
|
|
|
//ASYNC disabled; CCMPINIT disabled; CCMPEN disabled; CNTMODE FRQPW;
|
|
TCB3.CTRLB = 0x03;
|
|
|
|
//DBGRUN disabled;
|
|
//TCB3.DBGCTRL = 0x00;
|
|
|
|
//FILTER disabled; EDGE disabled; CAPTEI enabled;
|
|
TCB3.EVCTRL = 0x01;
|
|
|
|
//OVF disabled; CAPT enabled;
|
|
TCB3.INTCTRL = 0x01;
|
|
|
|
//OVF disabledAPT disabled;
|
|
//TCB3.INTFLAGS = 0; CAPT disabled;
|
|
//TCB3.INTFLAGS = 0x00;
|
|
|
|
//Temporary Value
|
|
//TCB3.TEMP = 0x00;
|
|
|
|
|
|
//EVSYS.CHANNEL0 = 0x40;
|
|
//EVSYS.SWEVENTA = 0x01;
|
|
//EVSYS.USERTCB3CAPT = 0x01;
|
|
|
|
//RUNSTDBY disabled; CASCADE disabled; SYNCUPD disabled; CLKSEL DIV1; ENABLE enabled;
|
|
TCB3.CTRLA = 0x01;
|
|
}
|
|
|
|
void testsettup() {
|
|
PORTA.IN = PIN3_bm;
|
|
PORTA.PIN3CTRL = PORT_PULLUPEN_bm;
|
|
EVSYS.CHANNEL0 = 0x43;
|
|
TCB0.EVCTRL = TCB_CAPTEI_bm;
|
|
TCB0.INTCTRL = TCB_CAPT_bm;
|
|
TCB0.CTRLB = TCB_CNTMODE_FRQ_gc;
|
|
EVSYS.USERTCB0CAPT = EVSYS_USER_CHANNEL0_gc;
|
|
TCB0.CTRLA = TCB_CLKSEL_TCA0_gc | TCB_ENABLE_bm;
|
|
|
|
}
|
|
/*
|
|
void TCB0_Init(void){
|
|
TCB3.CTRLB = TCB_CNTMODE_FRQPW_gc; /* Input Capture Frequency */
|
|
// TCB3.EVCTRL = TCB_CAPTEI_bm; /* Event Input Enable: enabled */
|
|
// TCB3.EVCTRL |= (1 << TCB_CAPTEI_bp | 1 << TCB_EDGE_bp | 1 << TCB_FILTER_bp); /* Event Input Enable: enabled */
|
|
// TCB3.INTCTRL = TCB_CAPT_bm; /* Capture or Timeout: enabled */
|
|
//TCB3.CTRLA = TCB_CLKSEL_DIV1_gc /* CLK_PER/1 (From Prescaler) - This is needed to be able to count to 40 Hz with a 4 Mhz system clock */
|
|
// | TCB_ENABLE_bm /* Enable: enabled */
|
|
// | TCB_RUNSTDBY_bm; /* Run Standby: enabled */
|
|
//}
|
|
|
|
void EVSYS_Init(void) {
|
|
/* Zero-cross detector 0 out linked to event channel 0 */
|
|
EVSYS.CHANNEL0 = EVSYS_CHANNEL0_PORTA_PIN5_gc;
|
|
/* TCB uses event channel 0 */
|
|
EVSYS.USERTCB0CAPT = EVSYS_USER_CHANNEL0_gc;
|
|
|
|
//test
|
|
//EVSYS.CHANNEL0 = 0x40;
|
|
//EVSYS.SWEVENTA = 0x01;
|
|
//EVSYS.USERTCB3CAPT = 0x01;
|
|
|
|
}
|
|
|
|
void PORTB_init() {
|
|
PORTA.OUTSET |= PIN5_bm;
|
|
PORTA.DIRSET |= PIN5_bm;
|
|
}
|
|
//-----------------------------------------------------------------------------------------------------
|
|
//-------------------------------------- S E T U P-----------------------------------------------------
|
|
|
|
/*
|
|
ISR ( TCA0_OVF_vect ) {
|
|
cli();
|
|
RPM_calculation();
|
|
|
|
TCA0.SINGLE.INTFLAGS = TCA_SINGLE_OVF_bm ;
|
|
|
|
sei();
|
|
}*/
|
|
|
|
void printnie(uint8_t en, uint8_t to) {
|
|
printf("CNT %u", en);
|
|
printf("ccmp %u", to);
|
|
}
|
|
|
|
/*ISR (TCB0_INT_vect){
|
|
uint16_t yo = TCB0.CNT;
|
|
|
|
uint16_t stewui = TCB0.CCMP;
|
|
|
|
printnie(yo, stewui);
|
|
TCB3.INTFLAGS = 0x03;
|
|
//TCB3.INTFLAGS = PIN0_bm;
|
|
|
|
}
|
|
*/
|
|
|
|
/*
|
|
ISR(PORTD_PORT_vect){
|
|
// cli();
|
|
falling_edge_counter ++;
|
|
|
|
PORTD.INTFLAGS = PIN2_bm;
|
|
//sei();
|
|
}
|
|
* */
|