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Merge pull request #2906 from adafruit/ch32_eink

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code for ch32v203 eink calendar clock
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Liz 2024-10-14 15:32:18 -04:00 committed by GitHub
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CH32V203_eInk_Calendar_Clock/CH32V203_eInk_Calendar_Clock.ino Normal file
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// SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
//
// SPDX-License-Identifier: MIT
#include <Arduino.h>
#include <SPI.h>
#include "Adafruit_TinyUSB.h"
#include "Adafruit_ThinkInk.h"
#include "RTClib.h"
#include <Wire.h>
#include <Fonts/FreeSans24pt7b.h>
#include <Fonts/FreeSans18pt7b.h>
#include <Fonts/FreeSans12pt7b.h>
#define EPD_DC PA3
#define EPD_CS PA2
#define EPD_BUSY -1 // can set to -1 to not use a pin (will wait a fixed delay)
#define SRAM_CS PA1
#define EPD_RESET -1 // can set to -1 and share with microcontroller Reset!
#define EPD_SPI &SPI // primary SPI
// 1.54" Monochrome displays with 200x200 pixels and SSD1681 chipset
ThinkInk_154_Mono_D67 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY, EPD_SPI);
RTC_DS3231 rtc;
char daysOfTheWeek[7][4] = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
char monthsOfYear[13][4] = {"NULL", "JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"};
bool start = true;
String lastTimeStr = "00:00";
void setup() {
Serial.begin(115200);
/*while (!Serial) {
delay(10);
}*/
Serial.println("eInk Calendar & Clock with CH32V203");
SPI.begin();
Serial.println("SPI started");
pinMode(EPD_CS, OUTPUT);
digitalWrite(EPD_CS, HIGH);
Wire.begin();
Serial.println("Wire started");
Serial.println("starting display, might take a bit..");
display.begin(THINKINK_MONO);
Serial.println("display started");
while (! rtc.begin()) {
Serial.println("Couldn't find RTC");
delay(10);
}
}
void loop() {
Serial.println("we did it!");
DateTime now = rtc.now();
Serial.println("read rtc");
char timeChar[6];
sprintf(timeChar, "%02d:%02d", now.hour(), now.minute());
String timeStr = String(timeChar);
String monthStr = monthsOfYear[now.month()];
String dateStr = String(now.day());
String yearStr = String(now.year());
String dayOfWeekStr = daysOfTheWeek[now.dayOfTheWeek()];
Serial.println(timeStr);
int16_t x1, y1;
uint16_t w, h;
if (lastTimeStr != timeStr) {
display.clearBuffer();
display.fillRect(0, 0, 200, 60, EPD_BLACK);
display.drawRect(0, 0, 200, 170, EPD_BLACK);
display.setTextColor(EPD_WHITE);
display.setFont(&FreeSans24pt7b);
display.getTextBounds(dayOfWeekStr.c_str(), 0, 0, &x1, &y1, &w, &h);
display.setCursor((200 - w) / 2, (60 - h) / 2 + h);
display.println(dayOfWeekStr);
display.setTextColor(EPD_BLACK);
display.getTextBounds(dateStr.c_str(), 0, 0, &x1, &y1, &w, &h);
display.setCursor((200 - w) / 2, (170 - h) / 2 + h + 28);
display.println(dateStr);
display.setFont(&FreeSans18pt7b);
display.getTextBounds(monthStr.c_str(), 0, 0, &x1, &y1, &w, &h);
display.setCursor((200 - w) / 2, (60 + h) + 3);
display.println(monthStr);
display.getTextBounds(yearStr.c_str(), 0, 0, &x1, &y1, &w, &h);
display.setCursor((200 - w) / 2, (170 - h) - 5 + h);
display.println(yearStr);
display.setFont(&FreeSans12pt7b);
display.getTextBounds(timeStr.c_str(), 0, 0, &x1, &y1, &w, &h);
display.setCursor((200 - w) / 2, (200 - h) - 5 + h);
display.println(timeStr);
display.display();
lastTimeStr = timeStr;
}
delay(30000);
}