CD4514 C language Driver

The CD4514 is a 4-to-16 line decoder/demultiplexer IC. To drive this IC using C language, you can use GPIO pins of your microcontroller to control the input pins of the CD4514 and change the output pins accordingly.

Here is an example code snippet that shows how to drive the CD4514 using C language:

#include <stdio.h>
#include <wiringPi.h>

#define A 0  // GPIO pin connected to A input of CD4514
#define B 1  // GPIO pin connected to B input of CD4514
#define C 2  // GPIO pin connected to C input of CD4514
#define D 3  // GPIO pin connected to D input of CD4514
#define EN 4 // GPIO pin connected to EN input of CD4514

int main() {
    wiringPiSetup(); // Initialize wiringPi library

    pinMode(A, OUTPUT); // Set A pin as output
    pinMode(B, OUTPUT); // Set B pin as output
    pinMode(C, OUTPUT); // Set C pin as output
    pinMode(D, OUTPUT); // Set D pin as output
    pinMode(EN, OUTPUT); // Set EN pin as output

    digitalWrite(EN, HIGH); // Enable CD4514

    // Loop through all possible input combinations and output the corresponding output
    for (int i = 0; i < 16; i++) {
        digitalWrite(A, i & 1); // Set A input
        digitalWrite(B, i & 2); // Set B input
        digitalWrite(C, i & 4); // Set C input
        digitalWrite(D, i & 8); // Set D input

        delay(1000); // Wait for 1 second

        // Output the corresponding output on the CD4514
        for (int j = 0; j < 16; j++) {
            digitalWrite(j + 5, (i == j) ? HIGH : LOW);
        }
    }

    digitalWrite(EN, LOW); // Disable CD4514

    return 0;
}

In this code, we first initialize the wiringPi library and set the necessary GPIO pins as outputs. We then enable the CD4514 by setting the EN pin high. We then loop through all possible input combinations and set the corresponding inputs on the CD4514. We then wait for 1 second before outputting the corresponding output on the CD4514. Finally, we disable the CD4514 by setting the EN pin low.

Note that the output pins of the CD4514 are connected to GPIO pins 5 to 20 in this example, and the corresponding output is set to high when the input combination matches the output index. You may need to modify this part of the code based on your specific requirements.