Display.cpp

/*

 * Copyright (c) 2018 Patrick Pedersen <ctx.xda@gmail.com>

 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 */

#include "Display.h"

/* Segment states for values 0-9 */
num_segs_t num_segs
{
//{a, b, c, d, e, f, g},
  {true, true, true, true, true, true, false},     // 0
  {false, true, true, false, false, false, false}, // 1
  {true, true, false, true, true, false, true},    // 2
  {true, true, true, true, false, false, true},    // 3
  {false, true, true, false, false, true, true},   // 4
  {true, false, true, true, false, true, true},    // 5
  {true, false, true, true, true, true, true},     // 6
  {true, true, true, false, false, false, false},  // 7
  {true, true, true, true, true, true, true},      // 8
  {true, true, true, true, false, true, true}      // 9
};

#ifdef DISABLE_DP
void Display::print(const char num[4]) {

  toggle(false);

  /* Display one digit at a time */
  for (int i = 0; i < strlen(num); i++) {

    /* Toggle segments for current digit */
    for (int j = 0; j < 7; j++) {
      segments[j]->toggle(num_segs[num[i] - 0x30][j]);
    }

    /* Add 1ms offset for previous digit to clear, in order to prevent flickering from upcoming digit */
    delay(1);
    digits[i]->toggle(true);

    /* Provide digit sufficient time to display */
    delay(1);
    digits[i]->toggle(false);
  }
}

#else

void Display::print(const char num[5]) {

  toggle(false);

  bool next_char_dp = false;
  int is_dp_num = 0;

  /* Display one digit at a time */
  for (int i = 0; i < strlen(num); i++) {

    /* Toggle segments for current digit */
    for (int j = 0; j < 7; j++) {
      segments[j]->toggle(num_segs[num[i] - 0x30][j]);
    }

    /* Next character is decimal point */
    next_char_dp  = (i + 1 < 5 && num[i + 1] == '.');

    /* Add 1ms offset for previous digit to clear, in order to prevent flickering from upcoming digit */
    delay(1);
    digits[i - is_dp_num]->toggle(true);
    dp->toggle(next_char_dp); // Turn decimal point on if next character is decimal point

    /* Provide digit sufficient time to display */
    delay(1);
    digits[i - is_dp_num]->toggle(false);
    dp->toggle(false);

    /* Indicate that we're wokring with a decimal point number */
    if (next_char_dp && !is_dp_num && ++i) {
      is_dp_num = 1;
    }
  }
}
#endif

/* Enable/Disable all digits */
void Display::toggle() {
  state = !state;
  for (int i = 0; i < 4; i++) {
    digits[i]->toggle(state);
  }
}

void Display::toggle(bool arg_state) {
  if (state != arg_state) {
    state = arg_state;
    for (int i = 0; i < 4; i++) {
      digits[i]->toggle(state);
    }
  }
}

/* Enable (all) segments */
void Display::fill(bool all) {
  /* Turn on all displays */
  if (all) {
    toggle(true);
  }

  for (int i = 0; i < 7; i++) {
    segments[i]->toggle(true);
  }
}

/* Disable (all) segments */
void Display::empty() {
  for (int i = 0; i < 7; i++) {
    segments[i]->toggle(false);
  }
}