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6a24566efb
* t3s3 e-paper support * remove GPS autodetect (which leads to crashes during startup when no GPS present) * update EINK defines * keep definitions for external GPS connector but disable GPS auto scan by default
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
#pragma once
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#ifdef USE_EINK
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#include "GxEPD2_BW.h"
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#include <OLEDDisplay.h>
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/**
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* An adapter class that allows using the GxEPD2 library as if it was an OLEDDisplay implementation.
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*
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* Note: EInkDynamicDisplay derives from this class.
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*
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* Remaining TODO:
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* optimize display() to only draw changed pixels (see other OLED subclasses for examples)
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* implement displayOn/displayOff to turn off the TFT device (and backlight)
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* Use the fast NRF52 SPI API rather than the slow standard arduino version
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*
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* turn radio back on - currently with both on spi bus is fucked? or are we leaving chip select asserted?
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* Suggestion: perhaps similar to HELTEC_WIRELESS_PAPER issue, which resolved with rtc_gpio_hold_dis()
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*/
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class EInkDisplay : public OLEDDisplay
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{
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/// How often should we update the display
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/// thereafter we do once per 5 minutes
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uint32_t slowUpdateMsec = 5 * 60 * 1000;
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public:
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/* constructor
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FIXME - the parameters are not used, just a temporary hack to keep working like the old displays
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*/
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EInkDisplay(uint8_t, int, int, OLEDDISPLAY_GEOMETRY, HW_I2C);
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// Write the buffer to the display memory (for eink we only do this occasionally)
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virtual void display(void) override;
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/**
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* Force a display update if we haven't drawn within the specified msecLimit
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*
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* @return true if we did draw the screen
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*/
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virtual bool forceDisplay(uint32_t msecLimit = 1000);
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/**
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* Run any code needed to complete an update, after the physical refresh has completed.
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* Split from forceDisplay(), to enable async refresh in derived EInkDynamicDisplay class.
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*
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*/
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virtual void endUpdate();
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/**
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* shim to make the abstraction happy
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*
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*/
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void setDetected(uint8_t detected);
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protected:
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// the header size of the buffer used, e.g. for the SPI command header
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virtual int getBufferOffset(void) override { return 0; }
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// Send a command to the display (low level function)
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virtual void sendCommand(uint8_t com) override;
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// Connect to the display
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virtual bool connect() override;
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// AdafruitGFX display object - instantiated in connect(), variant specific
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GxEPD2_BW<EINK_DISPLAY_MODEL, EINK_DISPLAY_MODEL::HEIGHT> *adafruitDisplay = NULL;
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// If display uses HSPI
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#if defined(HELTEC_WIRELESS_PAPER) || defined(HELTEC_WIRELESS_PAPER_V1_0) || defined(HELTEC_VISION_MASTER_E213) || \
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defined(HELTEC_VISION_MASTER_E290) || defined(TLORA_T3S3_EPAPER)
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SPIClass *hspi = NULL;
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#endif
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private:
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// FIXME quick hack to limit drawing to a very slow rate
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uint32_t lastDrawMsec = 0;
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};
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#endif |