106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/*
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MIT License
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Copyright (c) 2018, Alexey Dynda
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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/**
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* Attiny85 PINS
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* ____
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* RESET -|_| |- 3V
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* SCL (3) -| |- (2)
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* SDA (4) -| |- (1)
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* GND -|____|- (0)
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*
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* Atmega328 PINS: connect LCD to A4/A5
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*/
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#include "ssd1306.h"
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uint32_t lastMillis;
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uint8_t hours = 10;
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uint8_t minutes = 35;
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uint8_t seconds = 0;
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void printSeconds()
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{
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if (seconds & 1)
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{
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ssd1306_printFixed(54, 8, ":", STYLE_NORMAL);
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}
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else
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{
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ssd1306_printFixed(54, 8, " ", STYLE_NORMAL);
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}
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}
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void printMinutes()
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{
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char minutesStr[3] = "00";
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minutesStr[0] = '0' + minutes / 10;
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minutesStr[1] = '0' + minutes % 10;
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ssd1306_printFixed(78, 8, minutesStr, STYLE_NORMAL);
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}
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void printHours()
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{
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char hoursStr[3] = "00";
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hoursStr[0] = '0' + hours / 10;
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hoursStr[1] = '0' + hours % 10;
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ssd1306_printFixed(6, 8, hoursStr, STYLE_NORMAL);
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}
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void setup() {
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/* Replace the line below with ssd1306_128x32_i2c_init() if you need to use 128x32 display */
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ssd1306_128x64_i2c_init();
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ssd1306_fillScreen(0x00);
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ssd1306_setFixedFont(comic_sans_font24x32_123);
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lastMillis = millis();
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printHours();
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printMinutes();
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}
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void loop()
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{
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if ((uint32_t)(millis() - lastMillis) >= 1000)
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{
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lastMillis += 1000;
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if (++seconds > 59)
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{
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seconds = 0;
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if (++minutes > 59)
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{
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minutes = 0;
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if (++hours > 23)
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{
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hours = 0;
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}
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printHours();
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}
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printMinutes();
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}
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printSeconds();
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}
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}
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