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#Proteus for mplab x ide how to
#Proteus for mplab x ide driver
#Proteus for mplab x ide software
#Proteus for mplab x ide code

Return (ADRESH << 8) | ADRESL // return converted data While (GO_nDONE = 1) // wait for conversion complete GO_nDONE = 1 // start an A/D conversion cycle

#Proteus for mplab x ide driver

#include "I2C_LCD.c" // include I2C LCD driver source file

#Proteus for mplab x ide software

* This is a free software with NO WARRANTY. * Temperature is displayed on 1602 LCD screen (I2C LCD). * Interfacing PIC12F1822 microcontroller with LM35 analog temperature sensor. The I2C LCD is initialized with an I2C address of 0x4E: The hardware I2C module of the PIC12F1822 is initialized with a clock frequency of 100KHz (100000Hz): The I2C LCD driver file is included with the line: To be able to compile the C code, a small I2C LCD library for MPLAB XC8 compiler is required which can be downloaded from the following link:Īfter the download, add the library file ( I2C_LCD.c) to project folder.

#Proteus for mplab x ide code

The C code below is for MPLAB XC8 compiler, it was tested with version 2.00 installed on MPLAB X IDE version 5.05. Interfacing LM35 sensor with PIC microcontroller C code: In this project the PIC12F1822 microcontroller runs with its internal oscillator 8 MHz, MCLR pin is configured as an input pin. The output of the LM35 temperature sensor is connected to analog channel 0 (RA0) of the PIC12F1822 microcontroller. (All grounded terminals are connected together) Project circuit schematic diagram is shown below. Interfacing PIC microcontroller with LM335 sensor circuit:

10k ohm variable resistor or potentiometer.

PCF8574 I/O expander (or PCF8574A) - PCF8574 datasheet.

Interfacing PIC12F1822 with 1602 LCD and LM35 sensor | CCS C compiler Interfacing I2C LCD with PIC microcontroller | MPLAB Projects Now the ADC module works in the interval between 0 and 1.024V. In this project I used FVR = 1.024V because the LM35 output is generally less than 1V and also it gave me better result (let’s say higher resolution).

For example if we set the fixed voltage reference to 4.096V and the ADC module is configured so that the negative and the positive references are VSS and FVR (Fixed Voltage Reference) respectively, in this case the equivalent 10-bit digital value of 4.096 is 1023 and 3.00V is 3.00 * 1023/4.096 = 749, and so on. Normally negative and positive references of the ADC module are VSS and VDD respectively, but VDD is not exactly equal to 5.00V and here we should use the fixed voltage reference as a positive reference of the ADC module. With the fixed voltage reference we get approximately an exact result. The PIC12F1822 MCU has a 10-bit ADC module and a built-in fixed voltage reference (FVR) which makes it a good choice for this application.

The ADC module converts analog data into digital data.

Low Impedance Output, 0.1 Ω for 1 mA Load.

Calibrated Directly in ° Celsius (Centigrade).

If the output voltage = 370mV -> temperature = 37☌ If the output voltage = 200mV -> temperature = 20☌ If the output voltage = 100mV -> temperature = 10☌ If the output voltage = 10mV -> temperature = 1☌ The LM35 output has linear +10mV/☌ scale factor means the following: The compiler used in this project is Microchip MPLAB XC8 (MPLAB X IDE with MPLAB XC8 compiler). Temperature data is displayed on 16×2 LCD screen (I2C LCD). This project works also with DFRobot I2C LCD displays.

#Proteus for mplab x ide how to

This post shows how to build a simple thermometer using PIC12F1822 microcontroller and LM35 analog temperature sensor. Since the LM35 output varies with dependent to the temperature we need an ADC (Analog-to-Digital Converter) module to measure this voltage. The LM35 temperature sensor is a three pin device (VCC, OUT and GND) with an output voltage linearly related to Centigrade temperature.