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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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135
src/graphics/GxEPD2Multi.h Normal file
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// Wrapper class for GxEPD2_BW
// Generic signature at build-time, so that we can detect display model at run-time
// Workaround for issue of GxEPD2_BW objects not having a shared base class
// Only exposes methods which we are actually using
template <typename Driver0, typename Driver1> class GxEPD2_Multi
{
public:
void drawPixel(int16_t x, int16_t y, uint16_t color)
{
if (which == 0)
driver0->drawPixel(x, y, color);
else
driver1->drawPixel(x, y, color);
}
bool nextPage()
{
if (which == 0)
return driver0->nextPage();
else
return driver1->nextPage();
}
void hibernate()
{
if (which == 0)
driver0->hibernate();
else
driver1->hibernate();
}
void init(uint32_t serial_diag_bitrate = 0)
{
if (which == 0)
driver0->init(serial_diag_bitrate);
else
driver1->init(serial_diag_bitrate);
}
void init(uint32_t serial_diag_bitrate, bool initial, uint16_t reset_duration = 20, bool pulldown_rst_mode = false)
{
if (which == 0)
driver0->init(serial_diag_bitrate, initial, reset_duration, pulldown_rst_mode);
else
driver1->init(serial_diag_bitrate, initial, reset_duration, pulldown_rst_mode);
}
void setRotation(uint8_t x)
{
if (which == 0)
driver0->setRotation(x);
else
driver1->setRotation(x);
}
void setPartialWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{
if (which == 0)
driver0->setPartialWindow(x, y, w, h);
else
driver1->setPartialWindow(x, y, w, h);
}
void setFullWindow()
{
if (which == 0)
driver0->setFullWindow();
else
driver1->setFullWindow();
}
int16_t width()
{
if (which == 0)
return driver0->width();
else
return driver1->width();
}
int16_t height()
{
if (which == 0)
return driver0->height();
else
return driver1->height();
}
void clearScreen(uint8_t value = 0xFF)
{
if (which == 0)
driver0->clearScreen();
else
driver1->clearScreen();
}
void endAsyncFull()
{
if (which == 0)
driver0->endAsyncFull();
else
driver1->endAsyncFull();
}
// Exposes methods of the GxEPD2_EPD object which is usually available as GxEPD2_BW::epd
class Epd2Wrapper
{
public:
bool isBusy() { return m_epd2->isBusy(); }
GxEPD2_EPD *m_epd2;
} epd2;
// Constructor
// Select driver by passing whichDriver as 0 or 1
GxEPD2_Multi(uint8_t whichDriver, int16_t cs, int16_t dc, int16_t rst, int16_t busy, SPIClass &spi)
{
assert(whichDriver == 0 || whichDriver == 1);
which = whichDriver;
LOG_DEBUG("GxEPD2_Multi driver: %d", which);
if (which == 0) {
driver0 = new GxEPD2_BW<Driver0, Driver0::HEIGHT>(Driver0(cs, dc, rst, busy, spi));
epd2.m_epd2 = &(driver0->epd2);
} else if (which == 1) {
driver1 = new GxEPD2_BW<Driver1, Driver1::HEIGHT>(Driver1(cs, dc, rst, busy, spi));
epd2.m_epd2 = &(driver1->epd2);
}
}
private:
uint8_t which;
GxEPD2_BW<Driver0, Driver0::HEIGHT> *driver0;
GxEPD2_BW<Driver1, Driver1::HEIGHT> *driver1;
};