Heltec SSD1306 Display Support (#1283)
My environment
[env:heltec-display] ; Heltec ESP32 Board with SSD1306 display
platform = ${com.esp32_platform}
board = heltec_wifi_lora_32_V2
build_type = debug
monitor_filters = esp32_exception_decoder
board_build.partitions = min_spiffs.csv
extra_scripts = pre:scripts/omg_firmware_version.py
lib_deps =
${com-esp.lib_deps}
${libraries.wifimanager32}
${libraries.heltec}
; ${libraries.m5stickcp}
build_flags =
${com-esp.build_flags}
${test_env.build_flags}
; *** OpenMQTTGateway Config ***
'-UZmqttDiscovery' ; disables MQTT Discovery
'-DvalueAsATopic=true'
'-DLOG_LEVEL=LOG_LEVEL_TRACE'
; *** OpenMQTTGateway Modules ***
'-DZboardHELTEC="HELTEC"'
; *** Heltec Board Options ***
'-DDEBUG_OLEDDISPLAY(...)=Serial.printf( __VA_ARGS__ )'
'-DLOG_TO_LCD=true' ; Enable log to LCD
'-DLED_ERROR=2'
'-DONBOARD_LED=25' ; Onboard LED is GPIO 25 on the Heltec Board
monitor_port = /dev/cu.SLAB_USBtoUART
monitor_speed = 921600
upload_port = /dev/cu.SLAB_USBtoUART
upload_speed = 921600
1 - Set default LCD log level to WARNING
2 - Implemented a macro based displayPrint function that will be usable across different displays
- Added logo display when idle
- Fixed log-lcd mqtt function
- Enable OLED Display on Heltec Boards
This commit is contained in:
Northern Man authored and GitHub committed
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/*
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OpenMQTTGateway Addon - ESP8266 or Arduino program for home automation
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Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal and a MQTT broker
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Send and receiving command by MQTT
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HELTEC ESP32 LORA - SSD1306 / Onboard 0.96-inch 128*64 dot matrix OLED display
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Copyright: (c)Florian ROBERT
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Contributors:
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- 1technophile
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- NorthernMan54
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This file is part of OpenMQTTGateway.
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OpenMQTTGateway is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenMQTTGateway is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "User_config.h"
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#if defined(ZboardHELTEC)
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# include "ArduinoLog.h"
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# include "config_HELTEC.h"
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// # include "heltec.h"
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void logToLCD(bool display) {
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display ? Log.begin(LOG_LEVEL_LCD, &Oled) : Log.begin(LOG_LEVEL, &Serial); // Log on LCD following LOG_LEVEL_LCD
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}
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void setupHELTEC() {
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Log.trace(F("Setup HELTEC Display" CR));
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Oled.begin();
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Log.notice(F("Setup HELTEC Display end" CR));
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# if LOG_TO_LCD
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Log.begin(LOG_LEVEL_LCD, &Oled); // Log on LCD following LOG_LEVEL_LCD
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# endif
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}
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void loopHELTEC() {
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static int previousLogLevel;
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int currentLogLevel = Log.getLastMsgLevel();
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if (previousLogLevel != currentLogLevel && lowpowermode != 2) {
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switch (currentLogLevel) {
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case 1:
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case 2:
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// wakeScreen(NORMAL_LCD_BRIGHTNESS);
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// M5.Lcd.fillScreen(TFT_RED); // FATAL, ERROR
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// M5.Lcd.setTextColor(TFT_BLACK, TFT_RED);
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break;
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case 3:
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// wakeScreen(NORMAL_LCD_BRIGHTNESS);
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// M5.Lcd.fillScreen(TFT_ORANGE); // WARNING
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// M5.Lcd.setTextColor(TFT_BLACK, TFT_ORANGE);
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break;
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default:
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// wakeScreen(SLEEP_LCD_BRIGHTNESS);
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// M5.Lcd.fillScreen(TFT_WHITE);
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Oled.fillScreen(WHITE);
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Oled.drawLogo((int)OLED_WIDTH * 0.24, (int)(OLED_WIDTH / 2) - OLED_WIDTH * 0.2, (int)(OLED_HEIGHT / 2) + OLED_HEIGHT * 0.2, true, true, true, true, true, true); // Name
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break;
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}
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}
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previousLogLevel = currentLogLevel;
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}
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void MQTTtoHELTEC(char* topicOri, JsonObject& HELTECdata) { // json object decoding
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if (cmpToMainTopic(topicOri, subjectMQTTtoHELTECset)) {
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Log.trace(F("MQTTtoHELTEC json set" CR));
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// Log display set between HELTEC lcd (true) and serial monitor (false)
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if (HELTECdata.containsKey("log-lcd")) {
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bool displayOnLCD = HELTECdata["log-lcd"];
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Log.notice(F("Set lcd log: %T" CR), displayOnLCD);
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logToLCD(displayOnLCD);
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}
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}
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}
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// Simple print methonds
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void heltecPrint(char* line1, char* line2, char* line3) {
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Oled.println(line1);
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Oled.println(line2);
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Oled.println(line3);
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delay(2000);
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}
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void heltecPrint(char* line1, char* line2) {
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Oled.println(line1);
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Oled.println(line2);
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delay(2000);
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}
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void heltecPrint(char* line1) {
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Oled.println(line1);
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delay(2000);
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}
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// This pattern was borrowed from HardwareSerial and modified to support the ssd1306 display
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OledSerial Oled(0); // Not sure about this, came from Hardwareserial
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OledSerial::OledSerial(int x) {
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pinMode(RST_OLED, OUTPUT);
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digitalWrite(RST_OLED, LOW);
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delay(50);
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digitalWrite(RST_OLED, HIGH);
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# if defined(WIFI_Kit_32) || defined(WIFI_LoRa_32) || defined(WIFI_LoRa_32_V2)
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display = new SSD1306Wire(0x3c, SDA_OLED, SCL_OLED, GEOMETRY_128_64);
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# elif defined(Wireless_Stick)
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display = new SSD1306Wire(0x3c, SDA_OLED, SCL_OLED, GEOMETRY_64_32);
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# endif
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} // Not sure about this, came from Hardwareserial
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void OledSerial::begin() {
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// Heltec.begin(); // User OMG serial support
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display->init();
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display->flipScreenVertically();
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display->setFont(ArialMT_Plain_10);
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display->setColor(WHITE);
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display->fillRect(0, 0, OLED_WIDTH, OLED_HEIGHT);
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display->display();
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displayIntro(OLED_WIDTH * 0.24, (OLED_WIDTH / 2) - OLED_WIDTH * 0.2, (OLED_HEIGHT / 2) + OLED_HEIGHT * 0.2);
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display->setLogBuffer(OLED_TEXT_ROWS, OLED_TEXT_BUFFER);
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delay(1000);
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}
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// Dummy virtual's from Serial
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int OledSerial::available(void) {
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}
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int OledSerial::peek(void) {
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}
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int OledSerial::read(void) {
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}
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void OledSerial::flush(void) {
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}
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void OledSerial::fillScreen(OLEDDISPLAY_COLOR color) {
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display->clear();
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display->setColor(color);
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display->fillRect(0, 0, OLED_WIDTH, OLED_HEIGHT);
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}
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size_t OledSerial::write(uint8_t c) {
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display->clear();
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display->setColor(WHITE);
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display->setFont(ArialMT_Plain_10);
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display->write((char)c);
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display->drawLogBuffer(0, 0);
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display->display();
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return 1;
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}
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size_t OledSerial::write(const uint8_t* buffer, size_t size) {
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display->clear();
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display->setColor(WHITE);
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display->setFont(ArialMT_Plain_10);
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while (size) {
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display->write((char)*buffer++);
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size--;
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}
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display->drawLogBuffer(0, 0);
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display->display();
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return size;
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}
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/*
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Display OpenMQTTGateway logo - borrowed from ZboardM5.ino and tweaked for ssd1306 display ( removed color and tweaked size/location )
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*/
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void OledSerial::displayIntro(int scale, int displayWidth, int displayHeight) {
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drawLogo(scale, displayWidth, displayHeight, false, true, false, false, false, false); // Circle 2
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drawLogo(scale, displayWidth, displayHeight, false, false, true, false, false, false); // Circle 3
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drawLogo(scale, displayWidth, displayHeight, false, true, true, true, false, false); // Line 1
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drawLogo(scale, displayWidth, displayHeight, false, true, true, false, true, false); // Line 2
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drawLogo(scale, displayWidth, displayHeight, true, true, true, true, true, false); // Circle 1
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drawLogo(scale, displayWidth, displayHeight, true, true, true, true, true, true); // Name
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}
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void OledSerial::drawLogo(int logoSize, int circle1X, int circle1Y, bool circle1, bool circle2, bool circle3, bool line1, bool line2, bool name) {
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int circle1T = logoSize / 15;
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int circle2T = logoSize / 25;
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int circle3T = logoSize / 30;
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int circle3Y = circle1Y - (logoSize * 1.2);
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int circle3X = circle1X - (logoSize * 0.13);
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int circle2X = circle1X - (logoSize * 1.05);
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int circle2Y = circle1Y - (logoSize * 0.8);
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if (line1) {
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display->setColor(BLACK);
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display->drawLine(circle1X - 2, circle1Y, circle2X - 2, circle2Y);
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display->drawLine(circle1X - 1, circle1Y, circle2X - 1, circle2Y);
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display->drawLine(circle1X, circle1Y, circle2X, circle2Y);
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display->drawLine(circle1X + 1, circle1Y, circle2X + 1, circle2Y);
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display->drawLine(circle1X + 2, circle1Y, circle2X + 2, circle2Y);
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display->setColor(WHITE);
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display->fillCircle(circle3X, circle3Y, logoSize / 4 - circle3T * 2); // , WHITE);
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}
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if (line2) {
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display->setColor(BLACK);
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display->drawLine(circle1X - 2, circle1Y, circle3X - 2, circle3Y);
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display->drawLine(circle1X - 1, circle1Y, circle3X - 1, circle3Y);
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display->drawLine(circle1X, circle1Y, circle3X, circle3Y);
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display->drawLine(circle1X + 1, circle1Y, circle3X + 1, circle3Y);
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display->setColor(WHITE);
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display->fillCircle(circle2X, circle2Y, logoSize / 3 - circle2T * 2); // , WHITE);
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}
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if (circle1) {
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display->setColor(WHITE);
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display->fillCircle(circle1X, circle1Y, logoSize / 2); // , WHITE);
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display->setColor(BLACK);
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display->fillCircle(circle1X, circle1Y, logoSize / 2 - circle1T); // , TFT_GREEN);
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display->setColor(WHITE);
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display->fillCircle(circle1X, circle1Y, logoSize / 2 - circle1T * 2); // , WHITE);
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}
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if (circle2) {
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display->setColor(WHITE);
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display->fillCircle(circle2X, circle2Y, logoSize / 3); // , WHITE);
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display->setColor(BLACK);
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display->fillCircle(circle2X, circle2Y, logoSize / 3 - circle2T); // , TFT_ORANGE);
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display->setColor(WHITE);
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display->fillCircle(circle2X, circle2Y, logoSize / 3 - circle2T * 2); // , WHITE);
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}
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if (circle3) {
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display->setColor(WHITE);
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display->fillCircle(circle3X, circle3Y, logoSize / 4); // , WHITE);
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display->setColor(BLACK);
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display->fillCircle(circle3X, circle3Y, logoSize / 4 - circle3T); // , TFT_PINK);
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display->setColor(WHITE);
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display->fillCircle(circle3X, circle3Y, logoSize / 4 - circle3T * 2); // , WHITE);
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}
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if (name) {
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display->setColor(BLACK);
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display->drawString(circle1X + (circle1X * 0.27), circle1Y, "penMQTTGateway");
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}
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display->display();
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delay(50);
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}
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#endif
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