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Heltec Wireless Paper, VM-E213 Hardware Revisions (#7258)

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* Tests to identify display model

* (InkHUD) SSD1682 controller IC
Has a few quirks, gets its own base class

* (InkHUD) E0213A367 Display
For Heltec Wireless Paper V1.1.1, V1.2
For Heltec VM-E213 V1.1

* (InkHUD) Select display model at boot

* (BaseUI) Wrapper to combine multiple GxEPD2 drivers
Workaround for issue of GxEPD2_BW objects not having a shared base class. Allows us to select a driver at runtime.
https://github.com/meshtastic/firmware/issues/6851#issuecomment-2905353447

* (BaseUI) Select E-Ink model at boot

* (InkHUD) SSD1682 deep sleep

* (InkHUD) No deep sleep for SSD1682

* (InkHUD) Fully no-op deep sleep for SSD1682
This commit is contained in:
todd-herbert
2025-07-09 06:01:48 +12:00
committed by GitHub
parent 9c08220d24
commit db4e4e6e53
13 changed files with 483 additions and 14 deletions
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26
src/graphics/EInkDisplay2.cpp
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@@ -6,6 +6,10 @@
#include "main.h"
#include <SPI.h>
#ifdef GXEPD2_DRIVER_0
#include "einkDetect.h"
#endif
/*
The macros EINK_DISPLAY_MODEL, EINK_WIDTH, and EINK_HEIGHT are defined as build_flags in a variant's platformio.ini
Previously, these macros were defined at the top of this file.
@@ -174,9 +178,8 @@ bool EInkDisplay::connect()
}
}
#elif defined(HELTEC_WIRELESS_PAPER_V1_0) || defined(HELTEC_WIRELESS_PAPER) || defined(HELTEC_VISION_MASTER_E213) || \
defined(HELTEC_VISION_MASTER_E290) || defined(TLORA_T3S3_EPAPER) || defined(CROWPANEL_ESP32S3_5_EPAPER) || \
defined(CROWPANEL_ESP32S3_4_EPAPER) || defined(CROWPANEL_ESP32S3_2_EPAPER)
#elif defined(HELTEC_WIRELESS_PAPER_V1_0) || defined(HELTEC_VISION_MASTER_E290) || defined(TLORA_T3S3_EPAPER) || \
defined(CROWPANEL_ESP32S3_5_EPAPER) || defined(CROWPANEL_ESP32S3_4_EPAPER) || defined(CROWPANEL_ESP32S3_2_EPAPER)
{
// Start HSPI
hspi = new SPIClass(HSPI);
@@ -232,6 +235,23 @@ bool EInkDisplay::connect()
adafruitDisplay->init();
adafruitDisplay->setRotation(3);
}
#elif defined(HELTEC_WIRELESS_PAPER) || defined(HELTEC_VISION_MASTER_E213)
// Detect display model, before starting SPI
EInkDetectionResult displayModel = detectEInk();
// Start HSPI
hspi = new SPIClass(HSPI);
hspi->begin(PIN_EINK_SCLK, -1, PIN_EINK_MOSI, PIN_EINK_CS); // SCLK, MISO, MOSI, SS
// Create GxEPD2 object
adafruitDisplay = new GxEPD2_Multi<GXEPD2_DRIVER_0, GXEPD2_DRIVER_1>((uint8_t)displayModel, PIN_EINK_CS, PIN_EINK_DC,
PIN_EINK_RES, PIN_EINK_BUSY, *hspi);
// Init GxEPD2
adafruitDisplay->init();
adafruitDisplay->setRotation(3);
#endif
return true;