From f0a435d57868d98b8bbdd7e1382c5adf2d1c97b0 Mon Sep 17 00:00:00 2001
From: Elp03 <helle@grasmo.no>
Date: Sat, 27 Apr 2024 17:31:00 +0200
Subject: [PATCH] add comment

---
 prosjekt.X/fan_speeeed.c | 26 ++++++++++----------------
 prosjekt.X/fan_speeeed.h | 16 ++++++++++++++--
 prosjekt.X/main.c        |  4 ++--
 3 files changed, 26 insertions(+), 20 deletions(-)

diff --git a/prosjekt.X/fan_speeeed.c b/prosjekt.X/fan_speeeed.c
index 474c9c6..b4f001d 100644
--- a/prosjekt.X/fan_speeeed.c
+++ b/prosjekt.X/fan_speeeed.c
@@ -22,41 +22,40 @@ void TCA0_update_period_ms() {
 }
 
 uint16_t RPM_calculation(uint16_t fancounter, uint16_t time) {
-    printf("time: %u", time);
     fan_speed = (fancounter / time);
     fan_speed = fan_speed/2; 
     fan_speed = fan_speed * 60/5;
-    printf("falling edge: %u", fancounter);
     fancounter = 0;
-    printf("falling edge: ", fancounter);
-    printf("fanspeed %u \n", fan_speed);
     return fan_speed;
 }
 
 
 void init_fanports() {
     // CONFIGURE PINS AS ANALOG INPUTS
+    
+    // PIN FOR FAN 1
     PORTD.DIRSET &= ~PIN6_bm;
     PORTD.PIN6CTRL &= ~ PORT_ISC_gm;
     PORTD.PIN6CTRL = PORT_ISC_INPUT_DISABLE_gc;
     
+    // PIN FOR FAN 2
     PORTD.DIRSET &= ~PIN4_bm;
     PORTD.PIN4CTRL &= ~ PORT_ISC_gm ;
     PORTD.PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc;
     
+    // PIN FOR REFRENCE
     PORTD.DIRSET &= PIN7_bm;
     PORTD.PIN7CTRL &= ~ PORT_ISC_gm ;
     PORTD.PIN7CTRL = PORT_ISC_INPUT_DISABLE_gc;
 }
 
-void init_ac0_fan1(){ 
+void init_ac0(){ 
     //Wincontroll disabled
     AC0.CTRLB = 0x00;
     
     //SELECT POSITIVE AND NEGATIVE INPUTS FOR COMPARRISON
-    // FAN USE PD6 & PD7, COMPARE WITH PD3
+    // FAN USE PD6 COMPARE WITH PD3
     AC0.MUXCTRL = AC_MUXPOS_AINP3_gc | AC_MUXNEG_AINN2_gc;
-    //AC_MUXPOS_AINP1_gc
     
     // ENABLE AC BY WRITING 1 TO ENABLE BIT IN ACN.CTRLA
     AC0.CTRLA = AC_ENABLE_bm | AC_INTMODE_NORMAL_POSEDGE_gc | AC_OUTEN_bm;
@@ -66,12 +65,12 @@ void init_ac0_fan1(){
 }
 
 
-void init_ac1_fan2(){    
+void init_ac1(){    
     //Wincontroll disabled
     AC1.CTRLB = 0x00;
     
     //SELECT POSITIVE AND NEGATIVE INPUTS FOR COMPARRISON
-    // FAN USE PD6 & PD7, COMPARE WITH PD3
+    // FAN USE PD4, COMPARE WITH PD3
     AC1.MUXCTRL = AC_MUXPOS_AINP2_gc | AC_MUXNEG_AINN2_gc;
     
     // ENABLE AC BY WRITING 1 TO ENABLE BIT IN ACN.CTRLA
@@ -85,27 +84,22 @@ void init_ac1_fan2(){
 ISR(AC0_AC_vect){ // AC0 vec flag 
     cli();
     falling_edge_counter_1++;
-    printf("ac0");
     AC0.STATUS |= 0x10; //CMP flag to 0
     sei();
 }
 
 
-ISR(AC1_AC_vect){ // AC0 vec flag 
+ISR(AC1_AC_vect){ // AC1 vec flag 
     cli();
     falling_edge_counter_2++;
-    printf("ac1");
     AC1.STATUS |= 0x10; //CMP flag to 0
     sei();
 }
 
-
+// TIMER INTERUPT
 ISR (TCA0_OVF_vect) {
     cli();
-    
-    printf("fan1");
     RPM_calculation(falling_edge_counter_1,1);
-    printf("fan2");
     RPM_calculation(falling_edge_counter_2,1);
     falling_edge_counter_1 = 0;
     falling_edge_counter_2 = 0;
diff --git a/prosjekt.X/fan_speeeed.h b/prosjekt.X/fan_speeeed.h
index 930b468..9f40eaf 100644
--- a/prosjekt.X/fan_speeeed.h
+++ b/prosjekt.X/fan_speeeed.h
@@ -24,12 +24,24 @@ extern "C" {
 #include <avr/io.h>
 #include <avr/cpufunc.h>
     
+    // INITALICE TIMER COUNTER
     void init_TCA0();    
+    
+    // UPDATE TIMER PERIODE 
     void TCA0_update_period_ms ();
+    
+    // TAKES INN A TIME AND A THE COUNTED FAN DIPS 
+    // RETURNS THE RPM OF THE FAN
     uint16_t RPM_calculation(uint16_t fancounter, uint16_t time);
+    
+    // INITIALISING FAN PORTS
     void init_fanports();
-    void init_ac0_fan1();
-    void init_ac1_fan2();
+    
+    // INIT AC0 TO COMPARE PD6 AND PD7
+    void init_ac0();
+    
+    // INIT AC1 TO COMPARE PD4 AND PD7 
+    void init_ac1();
     
 #ifdef	__cplusplus
 }
diff --git a/prosjekt.X/main.c b/prosjekt.X/main.c
index a8b60f7..4d05257 100644
--- a/prosjekt.X/main.c
+++ b/prosjekt.X/main.c
@@ -37,8 +37,8 @@ int main(void) {
     stdout = &USART_stream;
     init_TCA0();
     init_fanports();
-    init_ac0_fan1();    
-    init_ac1_fan2();
+    init_ac0();    
+    init_ac1();
 
     sei();