T5-4.7-S3 Epaper Pro support (#6625)

* preliminary io pin definitions * Update product link * Move to new variant structure and refactor inkHUD - Display does not work and SX1262 init fails on HT752-02 * update variant definitions * add EPD driver * fix lora, add v1/v2 variant targets * adapt pins for v1/v2 * alt button * add compile guards * use lilygo epd47 lib * workaround for INT ERR_NOT_FOUND * USE_EPD (e-ink parallel display) * use FastEPD driver * create screen * EInkParallelDisplay definition * setup screen * dispaly() implementation * enable touchscreen * rotate touch screen * refactor display buffer processing * provide local copy of TwoWire instance as the touch driver calls end() * use larger fonts * replace touch driver; enable debugging * replace touch driver; enable debugging * consider bitsremain == 0 * tryfix crash * fix button * update touch driver * set lora_cs pin * update touch driver and lib reference * add locks * limit Ghosting similar to EInkDynamicDisplay * workaround for FastEPD partial update bug (artifacts) * display() code cleanup * fix a few platformio definitions * more EPD display cleanup * set rotation * use FastEPD arduino I2C by default * touch rotation * update screen for EPD * increase swipe distance for larger screen * EPD UIRenderer * trunk fmt * further #ifdef USE_EPD * disable rotation which messes up w/h; more cleanup * switch off ghosting algo * releease build; V1 buttons * swap V1 buttons * rearrange USE_EINK/EPD macros, use large font * cleanup (revert modified files) * more cleanup * revert * revert file * revert file Removed redundant line continuation in preprocessor directives. * Temporary gate off PSRam calculations until we can fix them * move variant.cpp and update commit references * revert wrong merge * add earlyInitVariant() * initialize all port 0 pins (0-7) as outputs / HIGH --------- Co-authored-by: Thomas Göttgens <tgoettgens@gmail.com> Co-authored-by: Jason P <applewiz@mac.com> Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz> Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
2026-10-19 01:41:30 +10:00 · 2026-03-25 10:52:18 -05:00
parent d693fd4232
commit 3b079c91bf
14 changed files with 927 additions and 11 deletions
@@ -0,0 +1,69 @@
+#pragma once
+
+#include "configuration.h"
+
+#ifdef USE_EINK_PARALLELDISPLAY
+#include <OLEDDisplay.h>
+
+#include <atomic>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+class FASTEPD;
+
+/**
+ * Adapter for E-Ink 8-bit parallel displays (EPD), specifically devices supported by FastEPD library
+ */
+class EInkParallelDisplay : public OLEDDisplay
+{
+  public:
+    enum EpdRotation {
+        EPD_ROT_LANDSCAPE = 0,
+        EPD_ROT_PORTRAIT = 90,
+        EPD_ROT_INVERTED_LANDSCAPE = 180,
+        EPD_ROT_INVERTED_PORTRAIT = 270,
+    };
+
+    EInkParallelDisplay(uint16_t width, uint16_t height, EpdRotation rotation);
+    virtual ~EInkParallelDisplay();
+
+    // OLEDDisplay virtuals
+    bool connect() override;
+    void sendCommand(uint8_t com) override;
+    int getBufferOffset(void) override { return 0; }
+
+    void display(void) override;
+    bool forceDisplay(uint32_t msecLimit = 1000);
+    void endUpdate();
+
+  protected:
+    uint32_t lastDrawMsec = 0;
+    FASTEPD *epaper;
+
+  private:
+    // Async full-refresh support
+    std::atomic<bool> asyncFullRunning{false};
+    TaskHandle_t asyncTaskHandle = nullptr;
+    void startAsyncFullUpdate(int clearMode);
+    static void asyncFullUpdateTask(void *pvParameters);
+
+#ifdef EINK_LIMIT_GHOSTING_PX
+    // helpers
+    void resetGhostPixelTracking();
+    void markDirtyBits(const uint8_t *prevBuf, uint32_t pos, uint8_t mask, uint8_t out);
+    void countGhostPixelsAndMaybePromote(int &newTop, int &newBottom, bool &forceFull);
+
+    // per-bit dirty buffer (same format as epaper buffers): one bit == one pixel
+    uint8_t *dirtyPixels = nullptr;
+    size_t dirtyPixelsSize = 0;
+    uint32_t ghostPixelCount = 0;
+    uint32_t ghostPixelLimit = EINK_LIMIT_GHOSTING_PX;
+#endif
+
+    EpdRotation rotation;
+    uint32_t previousImageHash = 0;
+    uint32_t lastUpdateMs = 0;
+    int fastRefreshCount = 0;
+};
+
+#endif