display and btn handling starts working ...

examples/companion_radio/UITask.cpp

@@ -43,6 +43,10 @@ void UITask::begin(DisplayDriver* display, const char* node_name, const char* bu
     *dash = 0;
   }
 
+  #ifdef PIN_USER_BTN
+    pinMode(PIN_USER_BTN, INPUT);
+  #endif
+
   // v1.2.3 (1 Jan 2025)
   sprintf(_version_info, "%s (%s)", version, build_date);
 }
@@ -57,6 +61,7 @@ void UITask::msgRead(int msgcount) {
 void UITask::clearMsgPreview() {
   _origin[0] = 0;
   _msg[0] = 0;
+  _need_refresh = true;
 }
 
 void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount) {
@@ -72,6 +77,7 @@ void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, i
   if (_display != NULL) {
     if (!_display->isOn()) _display->turnOn();
     _auto_off = millis() + AUTO_OFF_MILLIS;  // extend the auto-off timer
+    _need_refresh = true;
   }
 }
 
@@ -114,6 +120,7 @@ void UITask::renderCurrScreen() {
       _display->print(tmp);
     }
   }
+  _need_refresh = false;
 }
 
 void UITask::userLedHandler() {
@@ -157,6 +164,7 @@ void UITask::buttonHandler() {
             clearMsgPreview();
           } else {
             _display->turnOn();
+            _need_refresh = true;
           }
           _auto_off = cur_time + AUTO_OFF_MILLIS;   // extend auto-off timer
         }
@@ -182,7 +190,7 @@ void UITask::loop() {
   userLedHandler();
 
   if (_display != NULL && _display->isOn()) {
-    if (millis() >= _next_refresh) {
+    if (millis() >= _next_refresh && _need_refresh) {
       _display->startFrame();
       renderCurrScreen();
       _display->endFrame();

examples/companion_radio/UITask.h

@@ -15,6 +15,7 @@ class UITask {
   char _origin[62];
   char _msg[80];
   int _msgcount;
+  bool _need_refresh = true;
 
   void renderCurrScreen();
   void buttonHandler();

examples/companion_radio/main.cpp

@@ -59,9 +59,12 @@
 
 #ifdef DISPLAY_CLASS
   #include "UITask.h"
-  #include <helpers/ui/SSD1306Display.h>
+  #ifdef ST7789
-
+    #include <helpers/ui/ST7789Display.h>
-  static DISPLAY_CLASS  display;
+  #else
+    #include <helpers/ui/SSD1306Display.h>
+  #endif
+  static DISPLAY_CLASS display;
   #define HAS_UI
 #endif
 

src/helpers/ui/ST7789Display.cpp

@@ -0,0 +1,88 @@
+#include "ST7789Display.h"
+
+bool ST7789Display::i2c_probe(TwoWire& wire, uint8_t addr) {
+  return true;
+/*
+  wire.beginTransmission(addr);
+  uint8_t error = wire.endTransmission();
+  return (error == 0);
+*/
+}
+
+bool ST7789Display::begin() {
+  if(!_isOn) {
+    pinMode(PIN_TFT_VDD_CTL, OUTPUT);
+    pinMode(PIN_TFT_LEDA_CTL, OUTPUT);
+    digitalWrite(PIN_TFT_VDD_CTL, LOW);
+    digitalWrite(PIN_TFT_LEDA_CTL, LOW);
+    digitalWrite(PIN_TFT_RST, HIGH);
+
+    display.init(135, 240);
+    display.setRotation(2);
+    display.setSPISpeed(40000000);
+    display.fillScreen(ST77XX_BLACK);
+    display.setTextColor(ST77XX_WHITE);
+    display.setTextSize(2);
+    display.cp437(true);         // Use full 256 char 'Code Page 437' font
+  
+    _isOn = true;
+  }
+  return true;
+}
+
+void ST7789Display::turnOn() {
+  ST7789Display::begin();
+}
+
+void ST7789Display::turnOff() {
+  digitalWrite(PIN_TFT_VDD_CTL, HIGH);
+  digitalWrite(PIN_TFT_LEDA_CTL, HIGH);
+  digitalWrite(PIN_TFT_RST, LOW);
+  // digitalWrite(PIN_TFT_VDD_CTL, LOW);
+  // digitalWrite(PIN_TFT_LEDA_CTL, LOW);
+  _isOn = false;
+}
+
+void ST7789Display::clear() {
+  display.fillScreen(ST77XX_BLACK);
+}
+
+void ST7789Display::startFrame(Color bkg) {
+  display.fillScreen(0x00);
+  display.setTextColor(ST77XX_WHITE);
+  display.setTextSize(2);
+  display.cp437(true);         // Use full 256 char 'Code Page 437' font
+}
+
+void ST7789Display::setTextSize(int sz) {
+  display.setTextSize(sz);
+}
+
+void ST7789Display::setColor(Color c) {
+  _color = (c == LIGHT) ? ST77XX_WHITE : ST77XX_BLACK;
+  display.setTextColor(_color);
+}
+
+void ST7789Display::setCursor(int x, int y) {
+  display.setCursor(x, y);
+}
+
+void ST7789Display::print(const char* str) {
+  display.print(str);
+}
+
+void ST7789Display::fillRect(int x, int y, int w, int h) {
+  display.fillRect(x, y, w, h, _color);
+}
+
+void ST7789Display::drawRect(int x, int y, int w, int h) {
+  display.drawRect(x, y, w, h, _color);
+}
+
+void ST7789Display::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
+  display.drawBitmap(x, y, bits, w, h, ST77XX_BLUE);
+}
+
+void ST7789Display::endFrame() {
+  // display.display();
+}

src/helpers/ui/ST7789Display.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "DisplayDriver.h"
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_ST7789.h>
+
+class ST7789Display : public DisplayDriver {
+  Adafruit_ST7789 display;
+  bool _isOn;
+  uint8_t _color;
+
+  bool i2c_probe(TwoWire& wire, uint8_t addr);
+public:
+  ST7789Display() : DisplayDriver(135, 240), display(&SPI1, PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_RST) { _isOn = false; }
+//  ST7789Display() : DisplayDriver(135, 240), display(PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_SDA, PIN_TFT_SCL, PIN_TFT_RST) { _isOn = false; }
+  bool begin();
+
+  bool isOn() override { return _isOn; }
+  void turnOn() override;
+  void turnOff() override;
+  void clear() override;
+  void startFrame(Color bkg = DARK) override;
+  void setTextSize(int sz) override;
+  void setColor(Color c) override;
+  void setCursor(int x, int y) override;
+  void print(const char* str) override;
+  void fillRect(int x, int y, int w, int h) override;
+  void drawRect(int x, int y, int w, int h) override;
+  void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override;
+  void endFrame() override;
+};

variants/t114/platformio.ini

@@ -60,6 +60,9 @@ build_flags =
 extends = Heltec_t114
 build_flags =
   ${Heltec_t114.build_flags}
+  -I src/helpers/ui
+  -D ST7789
+  -D DISPLAY_CLASS=ST7789Display
   -D MAX_CONTACTS=100
   -D MAX_GROUP_CHANNELS=8
   -D BLE_PIN_CODE=123456
@@ -71,9 +74,12 @@ build_flags =
 build_src_filter = ${Heltec_t114.build_src_filter}
   +<helpers/nrf52/*.cpp>
   +<../examples/companion_radio/main.cpp>
+  +<../examples/companion_radio/UITask.cpp>
+  +<helpers/ui/ST7789Display.cpp>
 lib_deps =
   ${Heltec_t114.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  adafruit/Adafruit ST7735 and ST7789 Library @ ^1.11.0
 
 [env:Heltec_t114_companion_radio_usb]
 extends = Heltec_t114

variants/t114/variant.h

@@ -80,11 +80,13 @@
 ////////////////////////////////////////////////////////////////////////////////
 // Builtin buttons
 
-#define PIN_BUTTON1             (5)
+#define PIN_BUTTON1             (42)
 #define BUTTON_PIN              PIN_BUTTON1
 
-#define PIN_BUTTON2             (11)
+// #define PIN_BUTTON2             (11)
-#define BUTTON_PIN2             PIN_BUTTON2
+// #define BUTTON_PIN2             PIN_BUTTON2
+
+#define PIN_USER_BTN            BUTTON_PIN
 
 #define EXTERNAL_FLASH_DEVICES MX25R1635F
 #define EXTERNAL_FLASH_USE_QSPI
@@ -108,3 +110,14 @@
 // Buzzer
 
 #define PIN_BUZZER              (46)
+
+
+////////////////////////////////////////////////////////////////////////////////
+// TFT
+#define PIN_TFT_SCL             (40)
+#define PIN_TFT_SDA             (41)
+#define PIN_TFT_RST             (2)
+#define PIN_TFT_VDD_CTL         (3)
+#define PIN_TFT_LEDA_CTL        (15)
+#define PIN_TFT_CS              (11)
+#define PIN_TFT_DC              (12)