mirror of
https://gitlab.com/fabinfra/fabhardware/fabreader3.git
synced 2025-03-12 14:41:43 +01:00
Change Display handler to also use widely used Adafruit library
This commit is contained in:
André Fiedler
parent
a8596314ff
commit
f5f663771f
@ -15,12 +15,11 @@ framework = arduino
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monitor_speed = 115200
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lib_deps =
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knolleary/PubSubClient@^2.8
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thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.3.0
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miguelbalboa/MFRC522@^1.4.10
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thijse/ArduinoLog@^1.1.1
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uipethernet/UIPEthernet@^2.0.12
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bblanchon/ArduinoJson@^6.19.4
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mbed-feb11/Crypto@0.0.0+sha.f04410cef037
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adafruit/Adafruit PN532@^1.3.3
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build_flags =
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-D PN532_I2C_ADDRESS=0x24
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adafruit/Adafruit SSD1306@^2.5.13
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build_flags =
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-D PN532_I2C_ADDRESS=0x24
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@ -1,28 +1,49 @@
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#include <Display.h>
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#include <SSD1306Wire.h>
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#include "Display.h"
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#include <Wire.h>
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#include <stdio.h>
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#include <string.h>
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// Constructor: initializes I2C, creates the display object,
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// initializes the display, clears it, and sets an initial rotation.
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Display::Display(int sda, int scl, int readerid)
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{
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this->readerid = readerid;
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display = new SSD1306Wire(0x3c, sda, scl);
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display->init();
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display->setTextAlignment(TEXT_ALIGN_CENTER);
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display->flipScreenVertically();
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// Initialize I2C with custom SDA and SCL pins.
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Wire.begin(sda, scl);
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// Create display object (128x64) using I2C and default I2C address 0x3C.
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display = new Adafruit_SSD1306(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
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if (!display->begin(SSD1306_SWITCHCAPVCC, 0x3C))
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{
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Serial.println("SSD1306 allocation failed");
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while (1)
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{
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yield(); // Infinite loop if display initialization fails
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}
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}
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display->clearDisplay();
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// Flip the display vertically (if needed)
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display->setRotation(0);
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// Initialize text buffers.
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ReaderInfo[0] = '\0'; // Empty string
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strcpy(Title, "Boot ..."); // Set initial title
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strcpy(Title, "Boot ..."); // Initial title
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Info[0] = '\0'; // Empty string
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}
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void Display::clearReaderInfo()
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{
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char buffer[DISPLAY_BUFFER_SIZE];
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// Format the reader id as a 5-digit number.
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sprintf(buffer, "%05d", readerid);
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writeReaderInfo(buffer);
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}
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void Display::createReaderInfo(const char *state)
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{
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// Ensure there is enough room in the buffer (6 extra chars for the readerid)
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if (strlen(state) < DISPLAY_BUFFER_SIZE - 1 - 6)
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{
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char buffer[DISPLAY_BUFFER_SIZE];
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@ -55,50 +76,71 @@ void Display::writeInfo(const char *text)
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{
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strcpy(Info, text);
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}
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updateDisplay();
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}
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// Helper: Draws the given text centered horizontally at vertical position y.
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void Display::drawCenteredText(const char *text, int y)
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{
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int16_t x1, y1;
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uint16_t w, h;
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// Get the bounding box of the text.
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display->getTextBounds(text, 0, y, &x1, &y1, &w, &h);
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int x = (SCREEN_WIDTH - w) / 2;
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display->setCursor(x, y);
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display->print(text);
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}
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void Display::updateDisplay()
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{
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display->clear();
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display->clearDisplay();
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display->setFont(ArialMT_Plain_10);
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display->drawString(64, 0, ReaderInfo);
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// Draw ReaderInfo (using text size 1)
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display->setTextSize(1);
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display->setTextColor(SSD1306_WHITE);
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drawCenteredText(ReaderInfo, 0);
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display->setFont(ArialMT_Plain_24);
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display->drawString(64, 13, Title);
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// Draw Title (using text size 2 for emphasis)
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display->setTextSize(2);
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// The y-coordinate is chosen to leave room for the first line.
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drawCenteredText(Title, 16);
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display->setFont(ArialMT_Plain_16);
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display->drawString(64, 40, Info);
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// Draw Info (using text size 1)
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display->setTextSize(1);
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drawCenteredText(Info, 40);
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display->display();
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}
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void Display::updateByMQTT(const char *topic, byte *payload, unsigned int length)
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{
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char topic_displayTitle[] = "fabreader/00000/display/title";
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sprintf(topic_displayTitle, "fabreader/%05d/display/title", readerid);
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// Build expected MQTT topics for title, info, and stopping OTA.
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char topic_displayTitle[32];
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snprintf(topic_displayTitle, sizeof(topic_displayTitle), "fabreader/%05d/display/title", readerid);
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char topic_displayInfo[] = "fabreader/00000/display/info";
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sprintf(topic_displayInfo, "fabreader/%05d/display/info", readerid);
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char topic_displayInfo[32];
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snprintf(topic_displayInfo, sizeof(topic_displayInfo), "fabreader/%05d/display/info", readerid);
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char topic_stopOTA[] = "fabreader/00000/stopOTA";
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sprintf(topic_stopOTA, "fabreader/%05d/stopOTA", readerid);
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char topic_stopOTA[32];
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snprintf(topic_stopOTA, sizeof(topic_stopOTA), "fabreader/%05d/stopOTA", readerid);
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// Copy the payload into a null-terminated string.
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char *buffer = new char[length + 1];
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memcpy(buffer, payload, length);
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buffer[length] = '\0';
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if (!strcmp(topic, topic_displayTitle))
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// Update display based on the topic.
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if (strcmp(topic, topic_displayTitle) == 0)
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{
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writeTitle(buffer);
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}
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else if (!strcmp(topic, topic_displayInfo))
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else if (strcmp(topic, topic_displayInfo) == 0)
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{
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writeInfo(buffer);
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}
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else if (!strcmp(topic, topic_stopOTA))
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else if (strcmp(topic, topic_stopOTA) == 0)
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{
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clearReaderInfo();
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}
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}
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delete[] buffer;
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}
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@ -1,20 +1,32 @@
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#ifndef DISPLAY_H
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#define DISPLAY_H
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#include <SSD1306Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_SSD1306.h>
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#define DISPLAY_BUFFER_SIZE 30
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#define SCREEN_WIDTH 128
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#define SCREEN_HEIGHT 64
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#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset)
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class Display
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{
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private:
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SSD1306Wire *display;
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Adafruit_SSD1306 *display;
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int readerid;
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char ReaderInfo[DISPLAY_BUFFER_SIZE];
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char Title[DISPLAY_BUFFER_SIZE];
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char Info[DISPLAY_BUFFER_SIZE];
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// Helper function to center text horizontally at a given y coordinate.
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void drawCenteredText(const char *text, int y);
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public:
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// The constructor takes the SDA and SCL pins (which are used to initialize Wire)
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// and the reader ID.
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Display(int sda, int scl, int readerid);
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void createReaderInfo(const char *state);
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void clearReaderInfo();
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void writeReaderInfo(const char *text);
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@ -23,4 +35,5 @@ public:
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void updateDisplay();
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void updateByMQTT(const char *topic, byte *payload, unsigned int length);
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};
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#endif
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#endif
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