# Tiny Tapeout 5 Template Project

TinyTapeout is an educational project that makes it easier and cheaper
than ever to get your digital designs manufactured on a real chip.

Wokwi provides an easy way to create digital designs for Tiny Tapeout. 
You create a design out of individual logic gates, and simulate them 
with Wokwi to observe the result.

When your design is ready, you can submit it for manufacturing on a 
physical chip with Tiny Tapeout.

To learn more, follow the tutorial at https://tinytapeout.com/digital_design/

Note: when creating your own project, please replace this text with information
about your projects: what it does and how to use it.


README.md

diagram.json

adder

adder.chip.json

// Wokwi Custom Chip - For docs and examples see:
// https://docs.wokwi.com/chips-api/getting-started
//
// SPDX-License-Identifier: MIT
// Copyright 2023 Justin McAllister

#include "wokwi-api.h"
#include <stdio.h>
#include <stdlib.h>

typedef struct {
  pin_t pina;
  pin_t pinb;
  pin_t piny;
  pin_t pinc;
  // TODO: Put your chip variables here
} chip_state_t;

void chip_pin_change(void *user_data, pin_t pin, uint32_t value) {
    chip_state_t* chip = (chip_state_t*)user_data;
    bool a = pin_read(chip->pina);
    bool b = pin_read(chip->pinb);
    if(a && b){ 
      pin_write(chip->piny, 0); 
      pin_write(chip->pinc, 1);
    }else{
      pin_write(chip->piny, a || b);
      pin_write(chip->pinc, 0);
    }
  }

  

void chip_init() {
  chip_state_t *chip = malloc(sizeof(chip_state_t));
  chip->pina = pin_init("A",INPUT);
  chip->pinb = pin_init("B",INPUT);
  
  chip->piny = pin_init("Y",OUTPUT);
  chip->pinc = pin_init("C",OUTPUT);
  // TODO: Initialize the chip, set up IO pins, create timers, etc.
  
  const pin_watch_config_t watch_config = {
    .edge = BOTH,
    .pin_change = chip_pin_change,
    .user_data = chip,
  };
  pin_watch(chip->pina, &watch_config);
  pin_watch(chip->pinb, &watch_config);
  
  
}
