Hi all,
i am using pic18f25k80 to receive adc audio signal at pin 2(Adc Pin) and want to display the audio range in LCD Display(VU Meter).
I dont no how to start write a code for this. my VU dc ranges from 0-1.17,1.18 to 1.20.... please help me understand and write a code for that.

Thank you

 

What language? C?
The basic code can be had off of the Nigel Goodwin tutorial site, although in assembly, someone has converted them to C available out on the web..
Max.

 

C code. I am mikro C Pro Complier

 

Assumed you use the alphanumeric LCD for output:
First, get the ADC working and output ADC values to LCD. You can find some examples for ADC and LCD in examples folder and also in Mikroe Libstock.
Second, make a plan for your program:
a) ADC maximum and minimum values to be displayed, linear or logaritmic scale
b)based on a) calculate values for each segment and make ADC value to segment numbers lookup table (LUT) for this.
c)choose a character to be displayed at each segment
d)write a program which reads ADC value and using LUT writes choosen characters to LCD.

If you can make this code to work then you can choose different timings and visual effects if you want.

 

Hi all,
... please help me understand and write a code for that.

Thank you

Hi sai
Which LCD display do you have? Can you tell us part number of your display?

Do you understand how microcontroller send byte to display?

Can you write simple program that can display hello world message on your display screen?

 

Hi sai
Which LCD display do you have? Can you tell us part number of your display?

Do you understand how microcontroller send byte to display?

Can you write simple program that can display hello world message on your display screen?

I am using 20x2 oled display. I can able to write code for display..

 

I am using 20x2 oled display. I can able to write code for display..

Good.. So try to write program for ADC as trebla suggested to you in post #4.