#include <GxEPD.h>
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>
#include <U8g2_for_Adafruit_GFX.h>
#include <BLEDevice.h>
#include <BLEServer.h>
#include <BLEUtils.h>
#include <BLE2902.h>
#include <ArduinoJson.h>
//AsyncWebServer server(80);
//#include <GxGDEP015OC1/GxGDEP015OC1.h> // 1.54" b/w
//#include <GxGDEH0154D67/GxGDEH0154D67.h> // 1.54" b/w
//#include <GxGDEW0154Z04/GxGDEW0154Z04.h> // 1.54" b/w/r 200x200
//#include <GxGDEW0154Z17/GxGDEW0154Z17.h> // 1.54" b/w/r 152x152
//#include <GxGDEW0213I5F/GxGDEW0213I5F.h> // 2.13" b/w 104x212 flexible
//#include <GxGDE0213B1/GxGDE0213B1.h> // 2.13" b/w 250×122
//#include <GxGDEH0213B72/GxGDEH0213B72.h> // 2.13" b/w new panel
//#include <GxGDEH0213B73/GxGDEH0213B73.h> // 2.13" b/w newer panel
//#include <GxGDEW0213Z16/GxGDEW0213Z16.h> // 2.13" b/w/r
//#include <GxGDEH029A1/GxGDEH029A1.h> // 2.9" b/w
//#include <GxGDEW029T5/GxGDEW029T5.h> // 2.9" b/w IL0373
//#include <GxGDEW029Z10/GxGDEW029Z10.h> // 2.9" b/w/r
//#include <GxGDEW026T0/GxGDEW026T0.h> // 2.6" b/w
//#include <GxGDEW027C44/GxGDEW027C44.h> // 2.7" b/w/r
//#include <GxGDEW027W3/GxGDEW027W3.h> // 2.7" b/w
//#include <GxGDEW0371W7/GxGDEW0371W7.h> // 3.7" b/w
#include <GxGDEW042T2/GxGDEW042T2.h> // 4.2" b/w
//#include <GxGDEW042Z15/GxGDEW042Z15.h> // 4.2" b/w/r
//#include <GxGDEW0583T7/GxGDEW0583T7.h> // 5.83" b/w
//#include <GxGDEW075T8/GxGDEW075T8.h> // 7.5" b/w
//#include <GxGDEW075T7/GxGDEW075T7.h> // 7.5" b/w 800x480
//#include <GxGDEW075Z09/GxGDEW075Z09.h> // 7.5" b/w/r
//#include <GxGDEW075Z08/GxGDEW075Z08.h> // 7.5" b/w/r 800x480
U8G2_FOR_ADAFRUIT_GFX u8g2_for_adafruit_gfx;
//DNSServer dns;
//AsyncWiFiManager wifiManager(&server, &dns);
// mapping suggestion from Waveshare SPI e-Paper to Wemos D1 mini
// BUSY -> D2, RST -> D4, DC -> D3, CS -> D8, CLK -> D5, DIN -> D7, GND -> GND, 3.3V -> 3.3V
// mapping suggestion for ESP32, e.g. LOLIN32, see .../variants/.../pins_arduino.h for your board
// NOTE: there are variants with different pins for SPI ! CHECK SPI PINS OF YOUR BOARD
// BUSY -> 4, RST -> 16, DC -> 17, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
//ESP8266
//GxIO_Class io(SPI, /*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2); // arbitrary selection of D3(=0), D4(=2), selected for default of GxEPD_Class
//GxEPD_Class display(io, /*RST=D4*/ 2, /*BUSY=D2*/ 4); // default selection of D4(=2), D2(=4)
//ESP32
GxIO_Class io(SPI, /*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16); // arbitrary selection of 17, 16
GxEPD_Class display(io, /*RST=*/ 16, /*BUSY=*/ 4); // arbitrary selection of (16), 4
String valor;
#define SERVICE_UUID "a55b8b58-1693-488d-98b3-ee5d929318ef" //禁止修改，修改后APP将无法连接蓝牙
#define CHARACTERISTIC_UUID "0182844c-9a56-454c-94a2-2ba00713ec5a" //禁止修改，修改后APP将无法连接蓝牙
BLEServer* pServer = NULL;
BLECharacteristic* pCharacteristic = NULL;
bool deviceConnected = false;
bool oldDeviceConnected = false;
DynamicJsonDocument noteDoc(5000);
class MyCallbacks: public BLECharacteristicCallbacks {
void onWrite(BLECharacteristic *pCharacteristic) {
std::string value = pCharacteristic->getValue();
if (value.length() > 0) {
valor = "";
for (int i = 0; i < value.length(); i++) {
// Serial.print(value[i]); // Presenta value.
valor = valor + value[i];
}
Serial.println("*********");
Serial.print("valor = ");
Serial.println(valor); // Presenta valor.
deserializeJson(noteDoc, valor);
JsonArray notes = noteDoc["notes"];
// JsonArray notes = noteDoc["notes"].to<JsonArray>();
Serial.println( notes.size());
display.fillScreen(GxEPD_WHITE);
/*************************************************在这里进行个性化设置******************************************************************/
for (int i = 0; i < notes.size(); i++) {
display.drawFastHLine(0, i * 30 + 30, 400, GxEPD_BLACK);
u8g2_for_adafruit_gfx.setCursor(2, i * 30 + 20);
int num = i + 1;
u8g2_for_adafruit_gfx.print(String(num) + ". ");
u8g2_for_adafruit_gfx.setCursor(25, i * 30 + 20);
String content = notes[i]["content"];
u8g2_for_adafruit_gfx.print(content);//noteDoc[i]["content"]
u8g2_for_adafruit_gfx.setCursor(320, i * 30 + 20);
String date = notes[i]["date"];
u8g2_for_adafruit_gfx.print(date);
}
/*************************************************在这里进行个性化设置******************************************************************/
display.update();
}
}
};
class MyServerCallbacks: public BLEServerCallbacks {
void onConnect(BLEServer* pServer) {
deviceConnected = true;
};
void onDisconnect(BLEServer* pServer) {
deviceConnected = false;
}
};
void setup() {
Serial.begin(115200);
display.init(115200);
u8g2_for_adafruit_gfx.begin(display);
BLEDevice::init("墨水屏记事本"); //蓝牙名称
pServer = BLEDevice::createServer();
pServer->setCallbacks(new MyServerCallbacks());
BLEService *pService = pServer->createService(SERVICE_UUID);
pCharacteristic = pService->createCharacteristic(
CHARACTERISTIC_UUID,
BLECharacteristic::PROPERTY_READ |
BLECharacteristic::PROPERTY_WRITE |
BLECharacteristic::PROPERTY_NOTIFY |
BLECharacteristic::PROPERTY_INDICATE
);
pCharacteristic->addDescriptor(new BLE2902());
pCharacteristic->setCallbacks(new MyCallbacks());
pService->start();
BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
pAdvertising->addServiceUUID(SERVICE_UUID);
pAdvertising->setScanResponse(false);
pAdvertising->setMinPreferred(0x0); // set value to 0x00 to not advertise this parameter
BLEDevice::startAdvertising();
display.setRotation(4);
display.fillScreen(GxEPD_WHITE);
u8g2_for_adafruit_gfx.setFont(u8g2_font_wqy16_t_gb2312b); // select u8g2 font from here: https://github.com/olikraus/u8g2/wiki/fntlistall
u8g2_for_adafruit_gfx.setForegroundColor(GxEPD_BLACK); // apply Adafruit GFX color
u8g2_for_adafruit_gfx.setBackgroundColor(GxEPD_WHITE); // apply Adafruit GFX color
u8g2_for_adafruit_gfx.setCursor(20, 20);
u8g2_for_adafruit_gfx.print("墨水屏记事本");
display.update();
}
void loop() {
if (!deviceConnected && oldDeviceConnected) {
delay(500); // give the bluetooth stack the chance to get things ready
pServer->startAdvertising(); // restart advertising
Serial.println("start advertising");
oldDeviceConnected = deviceConnected;
Serial.println("disconnecting");
}
if (deviceConnected && !oldDeviceConnected) {
oldDeviceConnected = deviceConnected;
Serial.println("connecting");
}
}
Compilation error message：
找到无效库在 C:\Users\Administrator\Documents\Arduino\libraries\include: no headers files (.h) found in C:\Users\Administrator\Documents\Arduino\libraries\include
C:\Users\ADMINI~1\AppData\Local\Temp\arduino_modified_sketch_209374\sketch_apr15a.ino:63:28: warning: 'DynamicJsonDocument' is deprecated: use JsonDocument instead [-Wdeprecated-declarations]
63 | DynamicJsonDocument noteDoc(5000);
| ^
In file included from C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.hpp:56,
from C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.h:9,
from C:\Users\ADMINI~1\AppData\Local\Temp\arduino_modified_sketch_209374\sketch_apr15a.ino:10:
C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/compatibility.hpp:125:58: note: declared here
125 | class ARDUINOJSON_DEPRECATED("use JsonDocument instead") DynamicJsonDocument
| ^~~~~~~~~~~~~~~~~~~
C:\Users\ADMINI~1\AppData\Local\Temp\arduino_modified_sketch_209374\sketch_apr15a.ino: In member function 'virtual void MyCallbacks::onWrite(BLECharacteristic*)':
sketch_apr15a:66:52: error: conversion from 'String' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
66 | std::string value = pCharacteristic->getValue();
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~
exit status 1
conversion from 'String' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
C:\Users\Administrator\Documents\Arduino\sketch_apr15a\sketch_apr15a.ino:63:28: warning: 'DynamicJsonDocument' is deprecated: use JsonDocument instead [-Wdeprecated-declarations]
63 | DynamicJsonDocument noteDoc(5000);
| ^
In file included from C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.hpp:56,
from C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson.h:9,
from C:\Users\Administrator\Documents\Arduino\sketch_apr15a\sketch_apr15a.ino:10:
C:\Users\Administrator\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/compatibility.hpp:125:58: note: declared here
125 | class ARDUINOJSON_DEPRECATED("use JsonDocument instead") DynamicJsonDocument
| ^~~~~~~~~~~~~~~~~~~
C:\Users\Administrator\Documents\Arduino\sketch_apr15a\sketch_apr15a.ino: In member function 'virtual void MyCallbacks::onWrite(BLECharacteristic*)':
sketch_apr15a:66:52: error: conversion from 'String' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
66 | std::string value = pCharacteristic->getValue();
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~
exit status 1
conversion from 'String' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
version：2.3.6
日期：2025-04-09T11:26:55.498Z
CLI 版本：1.2.0
Copyright © 2025 Arduino SA