Add heltec_vision_master_e290 board.

src/helpers/ui/E290Display.cpp

@@ -0,0 +1,116 @@
+#include "E290Display.h"
+
+#include "../../MeshCore.h"
+
+bool E290Display::begin() {
+  if (_init) return true;
+
+  powerOn();
+  display.begin();
+
+  // Set to landscape mode rotated 180 degrees
+  display.setRotation(3);
+
+  _init = true;
+  _isOn = true;
+
+  clear();
+  display.fastmodeOn(); // Enable fast mode for quicker (partial) updates
+
+  return true;
+}
+
+void E290Display::powerOn() {
+#ifdef PIN_VEXT_EN
+  pinMode(PIN_VEXT_EN, OUTPUT);
+  digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE);
+  delay(50);                      // Allow power to stabilize
+#endif
+}
+
+void E290Display::powerOff() {
+#ifdef PIN_VEXT_EN
+  digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE); // Turn off power
+#endif
+}
+
+void E290Display::turnOn() {
+  if (!_init) begin();
+  powerOn();
+  _isOn = true;
+}
+
+void E290Display::turnOff() {
+  powerOff();
+  _isOn = false;
+}
+
+void E290Display::clear() {
+  display.clear();
+}
+
+void E290Display::startFrame(Color bkg) {
+  // Fill screen with white first to ensure clean background
+  display.fillRect(0, 0, width(), height(), WHITE);
+  if (bkg == LIGHT) {
+    // Fill with black if light background requested (inverted for e-ink)
+    display.fillRect(0, 0, width(), height(), BLACK);
+  }
+}
+
+void E290Display::setTextSize(int sz) {
+  // The library handles text size internally
+  display.setTextSize(sz);
+}
+
+void E290Display::setColor(Color c) {
+  // implemented in individual display methods
+}
+
+void E290Display::setCursor(int x, int y) {
+  display.setCursor(x, y);
+}
+
+void E290Display::print(const char *str) {
+  display.print(str);
+}
+
+void E290Display::fillRect(int x, int y, int w, int h) {
+  display.fillRect(x, y, w, h, BLACK);
+}
+
+void E290Display::drawRect(int x, int y, int w, int h) {
+  display.drawRect(x, y, w, h, BLACK);
+}
+
+void E290Display::drawXbm(int x, int y, const uint8_t *bits, int w, int h) {
+  // Width in bytes for bitmap processing
+  uint16_t widthInBytes = (w + 7) / 8;
+
+  // Process the bitmap row by row
+  for (int by = 0; by < h; by++) {
+    // Scan across the row bit by bit
+    for (int bx = 0; bx < w; bx++) {
+      // Get the current bit using MSB ordering (like GxEPDDisplay)
+      uint16_t byteOffset = (by * widthInBytes) + (bx / 8);
+      uint8_t bitMask = 0x80 >> (bx & 7);
+      bool bitSet = bits[byteOffset] & bitMask;
+
+      // If the bit is set, draw the pixel
+      if (bitSet) {
+        display.drawPixel(x + bx, y + by, BLACK);
+      }
+    }
+  }
+}
+
+uint16_t E290Display::getTextWidth(const char *str) {
+  int16_t x1, y1;
+  uint16_t w, h;
+  display.getTextBounds(str, 0, 0, &x1, &y1, &w, &h);
+  return w;
+}
+
+void E290Display::endFrame() {
+  display.update();
+}

src/helpers/ui/E290Display.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "DisplayDriver.h"
+
+#include <SPI.h>
+#include <Wire.h>
+#include <heltec-eink-modules.h>
+
+// Display driver for E290 e-ink display
+class E290Display : public DisplayDriver {
+  EInkDisplay_VisionMasterE290 display;
+  bool _init = false;
+  bool _isOn = false;
+
+public:
+  E290Display() : DisplayDriver(296, 128) {}
+
+  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;
+  uint16_t getTextWidth(const char *str) override;
+  void endFrame() override;
+
+private:
+  void powerOn();
+  void powerOff();
+};