ATmega328PB is a new semiconductor microcontroller from Microchip semiconductors. I have used its previous generation which is ATmega328 and ATmega328P. They were usually found on Arduino Uno and Arduino nano.
This new IC has a temperature sensor built into it. Which is handy for measuring the die temperature. Which can make device stable in high-temperature design. It is not accurate as a dedicated temperature sensor. But it gives you a rough idea. Using this you can the processes.
It is not an Ambient temperature Sensor.
/*
* main.c
*
* Created: 8/15/2022 4:06:41 PM
* Author: abhay
*/
#define F_CPU 16*1000000
#include <xc.h>
#include "uart.h"
#include "util/delay.h"
#include <stdlib.h>
long Ctemp;
unsigned int Ftemp;
int main(void)
{
DDRD &= ~(1 << DDD0); // PD0 - Rx Input
DDRD |= (1 << DDD1); // PD1 - Tx Ouput
USART_Init();
/* Replace with your application code */
ADMUX = (1<<REFS1) | (1<<REFS0) | (0<<ADLAR) | (1<<MUX3) | (0<<MUX2) | (0<<MUX1) | (0<<MUX0);
ADCSRA = (1<<ADPS2) |(1<<ADPS1) | (1<<ADEN);
ADCSRA |= (1<<ADSC);
while ((ADCSRA & (1<<ADSC)) !=0);
while (1)
{
ADCSRA |= (1<<ADSC);
while ((ADCSRA & (1<<ADSC)) !=0);
Ctemp = ((ADC - 247)/1.22)*1000;
Ftemp = (Ctemp * 1.8) + 32;
USART_Transmit( (((int)Ctemp/100000)%10) + 48);
USART_Transmit( (((int)Ctemp/10000)%10) + 48);
USART_Transmit( (((int)Ctemp/1000)%10) + 48);
USART_Transmit('.');
USART_Transmit( (((int)Ctemp/100)%10) + 48);
USART_Transmit( (((int)Ctemp/10)%10) + 48);
USART_Transmit( ((int)Ctemp%10) + 48);
USART_Transmit('\n');
_delay_ms(1000);
}
return -1;
}
