From f1c9a0707e5dfc27692e9c50bf73e4edac480bf3 Mon Sep 17 00:00:00 2001
From: Inamr <inamr@stud.ntnu.no>
Date: Tue, 9 Apr 2024 14:53:32 +0200
Subject: [PATCH] made code for fan speed

---
 prosjekt.X/fan_speeeed.c | 95 ++++++++++------------------------------
 prosjekt.X/fan_speeeed.h | 15 ++++---
 2 files changed, 33 insertions(+), 77 deletions(-)

diff --git a/prosjekt.X/fan_speeeed.c b/prosjekt.X/fan_speeeed.c
index 48dd5df..ea66791 100644
--- a/prosjekt.X/fan_speeeed.c
+++ b/prosjekt.X/fan_speeeed.c
@@ -1,84 +1,35 @@
-
-
-
 #include "fan_speeeed.h"
 
-int voltage_value_counter = 0;
-int voltage_value [30];
-
-
-
-RTC.PITCTRLA = RTC_PERIOD_CYC32768_gc | RTC_PITEN_bm;
-
-int RTC_init() {
-    uint8_t temp;
-    /* Initialize 32.768kHz Oscillator: */
-    /* Disable oscillator: */
-    temp = CLKCTRL.XOSC32KCTRLA;
-    temp &= ~CLKCTRL_ENABLE_bm;
-    /* Writing to protected register */
-    ccp_write_io((void*) &CLKCTRL.XOSC32KCTRLA, temp);
-
-    while (CLKCTRL.MCLKSTATUS & CLKCTRL_XOSC32KS_bm) {
-        ; /* Wait until XOSC32KS becomes 0 */
-    }
-    /* SEL = 0 (Use External Crystal): */
-    temp = CLKCTRL.XOSC32KCTRLA;
-    temp &= ~CLKCTRL_SEL_bm;
-    /* Writing to protected register */
-    ccp_write_io((void*) &CLKCTRL.XOSC32KCTRLA, temp);
-
-    /* Enable oscillator: */
-    temp = CLKCTRL.XOSC32KCTRLA;
-    temp |= CLKCTRL_ENABLE_bm;
-    /* Writing to protected register */
-    ccp_write_io((void*) &CLKCTRL.XOSC32KCTRLA, temp);
-
-    /* Initialize RTC: */
-    while (RTC.STATUS > 0) {
-        ; /* Wait for all register to be synchronized */
-    }
-    /* 32.768kHz External Crystal Oscillator (XOSC32K) */
-    RTC.CLKSEL = RTC_CLKSEL_TOSC32K_gc;
-    /* Run in debug: enabled */
-    RTC.DBGCTRL = RTC_DBGRUN_bm;
-
-    RTC.PITINTCTRL = RTC_PI_bm; /* Periodic Interrupt: enabled */
-
-    RTC.PITCTRLA = RTC_PERIOD_CYC32768_gc /* RTC Clock Cycles 32768 */
-            | RTC_PITEN_bm; /* Enable: enabled */
-
+void TCA0_init() {
+TCA0.SINGLE.INTCTRL = TCA_SINGLE_OVF_bm ;
+TCA0.SINGLE.CTRLA = TCA_SINGLE_ENABLE_bm | TCA_SINGLE_CLKSEL_DIV1024_gc ; /* Sysclk /1024 */
+TCA0.SINGLE.PERBUF = 0x0F42;
 }
-// skal lage en som finner data hvert ... sekund. Datane skal samles inn i en array. Når arrayen er full skal jeg regne ut rpm. Vet t det er ... mange sek mellom så blir enklere. så noe signalbehandling shit.
-int read_array_get_RPM() {
-    
-    f = ((1 / t)*1000);
-    fan_speed = (f * 60) / 2;
+
+void TCA0_update_period_ms() {
+TCA0.SINGLE.PERBUF = (F_CPU*(1/timer_period)/1024); /* F_CPU * F_IRQ / TCA_prescaler */
+}
+
+int read_input_get_RPM() {
     
+    fan_speed=(voltage_value_counter/timer_period)*6000*3;
+    voltage_value_counter = 0;
     return fan_speed;
 }
 
-inline void put_in_array() {
-    voltage_values[voltage_value_counter] = read_photodiode_voltage();
-    voltage_value_counter++;
-}
-
-void reset_voltage_array(){
-    for(int i = 0; i < voltage_values_counter; i++){
-        voltage_values[i]= 0;
-    }
-    voltage_value_counter = 0;
+void PORT_init(){
+    PORTB.PIN2CTRL = PORT_ISC_FALLING_gc;
 }
 
 
-ISR(RTC_PIT_vect) {
-    RTC.PITINTFLAGS = RTC_PI_bm;
-    if(voltage_value_counter < sizeof(voltage_values)/sizeof(voltage_value[0])){
-        put_in_array();
-    }
-    else{
-        read_array_get_RPM();
-        reset_voltage_array();
-    }
+
+ISR ( TCA0_OVF_vect ) {
+    read_input_get_RPM();
     
+    TCA0.SINGLE.INTFLAGS = TCA_SINGLE_OVF_bm ;
+}
+
+ISR(PORTB_PORT_vect){
+    PORTB.INTFLAGS = PIN2_bm;
+    voltage_value_counter ++;
 }
diff --git a/prosjekt.X/fan_speeeed.h b/prosjekt.X/fan_speeeed.h
index 7746664..476d539 100644
--- a/prosjekt.X/fan_speeeed.h
+++ b/prosjekt.X/fan_speeeed.h
@@ -23,12 +23,17 @@ extern "C" {
 #include <avr/interrupt.h>
 #include <avr/io.h>
 #include <avr/cpufunc.h>
-#include "voltage.h"
-    
-    int RTC_init();
-    int read_array_get_RPM(int voltage_value);
-    inline void put_in_array();
 
+    volatile uint16_t voltage_value_counter = 0;
+    int timer_period = 1;
+    int fan_speed;
+    
+    void TCA0_init ();
+    void PORT_init();
+    
+    void TCA0_update_period_ms ();
+    int read_input_get_RPM();
+    int interrpt();
 #ifdef	__cplusplus
 }
 #endif