Merge branch 'voltage-reading' into main

prosjekt.X/main.c

@@ -4,6 +4,15 @@
  *
  * Created on March 6, 2024, 12:34 PM
  */
+#include "voltage.h"
+#include "uart.h"
+#define RTC_PERIOD (511)
+#define DELAY_TIME 1000
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <string.h>
+#include <stdbool.h>
 
 
 #include "eeprom.h"
@@ -14,11 +23,12 @@
 #include <util/delay.h>
 
 int main() {
+    ADC0_init();
     init_uart((uint16_t)9600);
     stdout = &USART_stream;
 
     while (1) {
-        printf("Hello, world!\n");
+        uint16_t adcVal = ADC0_read();
-        _delay_ms(500);
+        printf("The values: \n%u , %u\n",VREF_REFSEL_VDD_gc , adcVal);
     }
 }

prosjekt.X/nbproject/configurations.xml

@@ -6,6 +6,7 @@
                    projectFiles="true">
       <itemPath>uart.h</itemPath>
       <itemPath>eeprom.h</itemPath>
+      <itemPath>voltage.h</itemPath>
     </logicalFolder>
     <logicalFolder name="LinkerScript"
                    displayName="Linker Files"
@@ -17,6 +18,7 @@
       <itemPath>main.c</itemPath>
       <itemPath>uart.c</itemPath>
       <itemPath>eeprom.c</itemPath>
+      <itemPath>voltage.c</itemPath>
     </logicalFolder>
     <logicalFolder name="ExternalFiles"
                    displayName="Important Files"

prosjekt.X/voltage.c

@@ -0,0 +1,69 @@
+#include "voltage.h"
+#include "uart.h"
+
+void ADC0_init(void) {
+    /* Initializing ADC0 pin*/
+    /*Voltage reading on pin pd6*/ 
+    PORTD.PIN6CTRL &= ~PORT_ISC_gm;
+    PORTD.PIN6CTRL |= PORT_ISC_INPUT_DISABLE_gc; /* Disable  */
+    PORTD.PIN6CTRL &= PORT_PULLUPEN_bm;
+    
+    /* Thermistor */
+    PORTD.PIN3CTRL &= ~PORT_ISC_gm;
+    PORTD.PIN3CTRL |= PORT_ISC_INPUT_DISABLE_gc; /* Disable  */
+    PORTD.PIN3CTRL &= PORT_PULLUPEN_bm;
+    
+    ADC0.CTRLC = ADC_PRESC_DIV4_gc;
+    VREF.ADC0REF = VREF_REFSEL_VDD_gc; /* Internal reference */
+    ADC0.CTRLA = ADC_ENABLE_bm /* ADC Enable: enabled */
+            | ADC_RESSEL_10BIT_gc; /* 10-bit mode */
+    /* Select ADC channel */
+    ADC0.MUXPOS = ADC_MUXPOS_AIN6_gc;
+}
+
+uint16_t ADC0_read(void) {
+    /* Start ADC conversion */
+    ADC0.COMMAND = ADC_STCONV_bm;
+    /* Wait until ADC conversion done */
+    while (!(ADC0.INTFLAGS & ADC_RESRDY_bm)) {
+        ;
+    }
+    // Clear the interrupt flag by writing 1:
+    ADC0.INTFLAGS = ADC_RESRDY_bm;
+    return ADC0.RES;
+}
+
+uint16_t thermistor_voltage_read() {
+    /* Gets value for the diode */
+    ADC0.MUXPOS = 0x03; // Read PD3
+    uint16_t adc_val = ADC0_read();
+
+    return adc_val;
+}
+// Gets the value over thermistor
+uint16_t external_voltage_read(){
+    ADC0.MUXPOS = 0x06; // Read PD6
+    uint16_t adc_val = ADC0_read();
+    
+    return adc_val;
+}
+
+uint16_t internal_voltage_read() {
+    /* Gets value for the internal voltage reffreance*/
+    
+    ADC0.MUXPOS = 0x44;
+    uint8_t adc_val = ADC0_read();
+    
+    return adc_val*10;
+}
+
+/* Takes inn a messured value and converts it to voltage */
+uint16_t convert_to_voltage(uint16_t adc_val){
+    uint16_t min_in= 0;
+    uint16_t min_out= 0;
+    uint16_t max_in= 1023;
+    uint16_t max_out= 3.3;
+    uint16_t voltage = (adc_val-min_in)*(max_out-min_out)/(max_in-min_in) + min_out;
+    return voltage;
+    
+}

prosjekt.X/voltage.h

@@ -0,0 +1,71 @@
+/* Microchip Technology Inc. and its subsidiaries.  You may use this software 
+ * and any derivatives exclusively with Microchip products. 
+ * 
+ * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS".  NO WARRANTIES, WHETHER 
+ * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED 
+ * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A 
+ * PARTICULAR PURPOSE, OR ITS INTERACTION WITH MICROCHIP PRODUCTS, COMBINATION 
+ * WITH ANY OTHER PRODUCTS, OR USE IN ANY APPLICATION. 
+ *
+ * IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, 
+ * INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND 
+ * WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS 
+ * BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE 
+ * FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS 
+ * IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF 
+ * ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
+ *
+ * MICROCHIP PROVIDES THIS SOFTWARE CONDITIONALLY UPON YOUR ACCEPTANCE OF THESE 
+ * TERMS. 
+ */
+
+/* 
+ * File: Voltage.h 
+ * Author: Sebastian Hernø Gabrielli, Helle Augland Grasmo, Ina Min Rørnes 
+ * Comments: 
+ * Revision history: 
+ */
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <string.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+// This is a guard condition so that contents of this file are not included
+// more than once.  
+#ifndef XC_HEADER_TEMPLATE_H
+#define	XC_HEADER_TEMPLATE_H
+
+#include <xc.h> // include processor files - each processor file is guarded.  
+
+
+#ifdef	__cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+    // Initializing of the ADC0 pins
+
+    void ADC0_init(void);
+    // 
+    //void ADC0_start(void);
+    //Start ADC conversion
+    uint16_t ADC0_read(void);
+    // Gets the value from sensor and internal voltage
+    uint16_t internal_voltage_read();
+    // Gets the value over thermistor
+    uint16_t thermistor_voltage_read();
+    // Gets internal voltage
+    uint16_t external_voltage_read();
+    // Converts value to voltage
+    uint16_t convert_to_voltage(uint16_t adc_val);
+    
+#ifdef	__cplusplus
+}
+#endif /* __cplusplus */
+
+#endif	/* XC_HEADER_TEMPLATE_H */
+
+
+