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feat: initial support for Heltec Wireless Paper v1.0 (#3181)

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E-ink panel is DEPG0213BNS800. Otherwise, identical to v1.1 (?)
Partial refresh supported, but not implemented in this commit.

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
This commit is contained in:
todd-herbert
2024-02-09 14:00:13 +13:00
committed by GitHub
parent 9d4c4f8bd1
commit 8130b1cf43
6 changed files with 208 additions and 1 deletions
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57
src/graphics/EInkDisplay2.cpp
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@@ -7,7 +7,7 @@
#include "main.h"
#include <SPI.h>
#ifdef HELTEC_WIRELESS_PAPER
#if defined(HELTEC_WIRELESS_PAPER) || defined(HELTEC_WIRELESS_PAPER_V1_0)
SPIClass *hspi = NULL;
#endif
@@ -48,6 +48,11 @@ SPIClass *hspi = NULL;
#elif defined(HELTEC_WIRELESS_PAPER)
// #define TECHO_DISPLAY_MODEL GxEPD2_213_T5D
#define TECHO_DISPLAY_MODEL GxEPD2_213_FC1
#elif defined(HELTEC_WIRELESS_PAPER_V1_0)
// 2.13" 122x250 - DEPG0213BNS800
#define TECHO_DISPLAY_MODEL GxEPD2_213_BN
#endif
GxEPD2_BW<TECHO_DISPLAY_MODEL, TECHO_DISPLAY_MODEL::HEIGHT> *adafruitDisplay;
@@ -70,6 +75,17 @@ EInkDisplay::EInkDisplay(uint8_t address, int sda, int scl, OLEDDISPLAY_GEOMETRY
// GxEPD2_154_M09
// setGeometry(GEOMETRY_RAWMODE, 200, 200);
#elif defined(HELTEC_WIRELESS_PAPER_V1_0)
// The display's memory is actually 128px x 250px
// Setting the buffersize manually prevents 122/8 truncating to a 15 byte width
// (Or something like that..)
this->geometry = GEOMETRY_RAWMODE;
this->displayWidth = 250;
this->displayHeight = 122;
this->displayBufferSize = 250 * (128 / 8);
#elif defined(HELTEC_WIRELESS_PAPER)
// GxEPD2_213_BN - 2.13 inch b/w 250x122
setGeometry(GEOMETRY_RAWMODE, 250, 122);
@@ -146,6 +162,8 @@ bool EInkDisplay::forceDisplay(uint32_t msecLimit)
#elif defined(PCA10059) || defined(M5_COREINK)
adafruitDisplay->nextPage();
#elif defined(HELTEC_WIRELESS_PAPER_V1_0)
adafruitDisplay->nextPage();
#elif defined(HELTEC_WIRELESS_PAPER)
adafruitDisplay->nextPage();
#elif defined(PRIVATE_HW) || defined(my)
@@ -229,6 +247,43 @@ bool EInkDisplay::connect()
(void)adafruitDisplay;
}
}
#elif defined(HELTEC_WIRELESS_PAPER_V1_0)
{
// Is this a normal boot, or a wake from deep sleep?
esp_sleep_wakeup_cause_t wakeReason = esp_sleep_get_wakeup_cause();
// If waking from sleep, need to reverse rtc_gpio_isolate(), called in cpuDeepSleep()
// Otherwise, SPI won't work
if (wakeReason != ESP_SLEEP_WAKEUP_UNDEFINED) {
// HSPI + other display pins
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_SCLK);
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_DC);
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_RES);
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_BUSY);
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_CS);
rtc_gpio_hold_dis((gpio_num_t)PIN_EINK_MOSI);
}
// Start HSPI
hspi = new SPIClass(HSPI);
hspi->begin(PIN_EINK_SCLK, -1, PIN_EINK_MOSI, PIN_EINK_CS); // SCLK, MISO, MOSI, SS
// Enable VExt (ACTIVE LOW)
// Unsure if called elsewhere first?
delay(100);
pinMode(Vext, OUTPUT);
digitalWrite(Vext, LOW);
delay(100);
// Create GxEPD2 objects
auto lowLevel = new TECHO_DISPLAY_MODEL(PIN_EINK_CS, PIN_EINK_DC, PIN_EINK_RES, PIN_EINK_BUSY, *hspi);
adafruitDisplay = new GxEPD2_BW<TECHO_DISPLAY_MODEL, TECHO_DISPLAY_MODEL::HEIGHT>(*lowLevel);
// Init GxEPD2
adafruitDisplay->init();
adafruitDisplay->setRotation(3);
}
#elif defined(HELTEC_WIRELESS_PAPER)
{
hspi = new SPIClass(HSPI);