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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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41
src/graphics/niche/Drivers/EInk/SSD1682.cpp Normal file
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#include "./SSD1682.h"
#ifdef MESHTASTIC_INCLUDE_NICHE_GRAPHICS
using namespace NicheGraphics::Drivers;
SSD1682::SSD1682(uint16_t width, uint16_t height, EInk::UpdateTypes supported, uint8_t bufferOffsetX)
: SSD16XX(width, height, supported, bufferOffsetX)
{
}
// SSD1682 only accepts single-byte x and y values
// This causes an incompatibility with the default SSD16XX::configFullscreen
void SSD1682::configFullscreen()
{
// Define the boundaries of the "fullscreen" region, for the controller IC
static const uint8_t sx = bufferOffsetX; // Notice the offset
static const uint8_t sy = 0;
static const uint8_t ex = bufferRowSize + bufferOffsetX - 1; // End is "max index", not "count". Minus 1 handles this
static const uint8_t ey = height;
// Data entry mode - Left to Right, Top to Bottom
sendCommand(0x11);
sendData(0x03);
// Select controller IC memory region to display a fullscreen image
sendCommand(0x44); // Memory X start - end
sendData(sx);
sendData(ex);
sendCommand(0x45); // Memory Y start - end
sendData(sy);
sendData(ey);
// Place the cursor at the start of this memory region, ready to send image data x=0 y=0
sendCommand(0x4E); // Memory cursor X
sendData(sx);
sendCommand(0x4F); // Memory cursor y
sendData(sy);
}
#endif