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B/W support for GooDisplay GDEY029T94 (as used on Adafruit MagTag) (#4222)
* B/W support for GooDisplay GDEY029T94 * Fix python style ci * linter recommendations --------- Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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3 changed files with 106 additions and 0 deletions
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@ -29,6 +29,7 @@ WaveshareEPaper2P7In = waveshare_epaper_ns.class_(
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WaveshareEPaper2P9InB = waveshare_epaper_ns.class_(
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"WaveshareEPaper2P9InB", WaveshareEPaper
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)
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GDEY029T94 = waveshare_epaper_ns.class_("GDEY029T94", WaveshareEPaper)
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WaveshareEPaper4P2In = waveshare_epaper_ns.class_(
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"WaveshareEPaper4P2In", WaveshareEPaper
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)
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@ -73,6 +74,7 @@ MODELS = {
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"2.13in-ttgo-b74": ("a", WaveshareEPaperTypeAModel.TTGO_EPAPER_2_13_IN_B74),
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"2.90in": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN),
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"2.90inv2": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN_V2),
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"gdey029t94": ("c", GDEY029T94),
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"2.70in": ("b", WaveshareEPaper2P7In),
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"2.90in-b": ("b", WaveshareEPaper2P9InB),
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"4.20in": ("b", WaveshareEPaper4P2In),
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@ -663,6 +663,90 @@ void WaveshareEPaper2P9InB::dump_config() {
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LOG_UPDATE_INTERVAL(this);
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}
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// ========================================================
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// Good Display 2.9in black/white/grey
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// Datasheet:
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// - https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf
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// - https://github.com/adafruit/Adafruit_EPD/blob/master/src/panels/ThinkInk_290_Grayscale4_T5.h
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// ========================================================
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void GDEY029T94::initialize() {
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// from https://www.waveshare.com/w/upload/b/bb/2.9inch-e-paper-b-specification.pdf, page 37
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// EPD hardware init start
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this->reset_();
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// COMMAND POWER SETTINGS
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this->command(0x00);
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this->data(0x03);
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this->data(0x00);
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this->data(0x2b);
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this->data(0x2b);
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this->data(0x03); /* for b/w */
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// COMMAND BOOSTER SOFT START
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this->command(0x06);
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this->data(0x17);
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this->data(0x17);
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this->data(0x17);
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// COMMAND POWER ON
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this->command(0x04);
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this->wait_until_idle_();
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// Not sure what this does but it's in the Adafruit EPD library
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this->command(0xFF);
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this->wait_until_idle_();
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// COMMAND PANEL SETTING
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this->command(0x00);
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// 128x296 resolution: 10
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// LUT from OTP: 0
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// B/W mode (doesn't work): 1
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// scan-up: 1
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// shift-right: 1
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// booster ON: 1
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// no soft reset: 1
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this->data(0b10011111);
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// COMMAND RESOLUTION SETTING
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// set to 128x296 by COMMAND PANEL SETTING
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// COMMAND VCOM AND DATA INTERVAL SETTING
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// use defaults for white border and ESPHome image polarity
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// EPD hardware init end
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}
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void HOT GDEY029T94::display() {
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// COMMAND DATA START TRANSMISSION 2 (B/W only)
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this->command(0x13);
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delay(2);
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this->start_data_();
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for (size_t i = 0; i < this->get_buffer_length_(); i++) {
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this->write_byte(this->buffer_[i]);
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}
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this->end_data_();
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delay(2);
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// COMMAND DISPLAY REFRESH
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this->command(0x12);
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delay(2);
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this->wait_until_idle_();
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// COMMAND POWER OFF
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// NOTE: power off < deep sleep
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this->command(0x02);
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}
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int GDEY029T94::get_width_internal() { return 128; }
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int GDEY029T94::get_height_internal() { return 296; }
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void GDEY029T94::dump_config() {
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LOG_DISPLAY("", "Waveshare E-Paper (Good Display)", this);
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ESP_LOGCONFIG(TAG, " Model: 2.9in Greyscale GDEY029T94");
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LOG_PIN(" Reset Pin: ", this->reset_pin_);
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LOG_PIN(" DC Pin: ", this->dc_pin_);
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LOG_PIN(" Busy Pin: ", this->busy_pin_);
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LOG_UPDATE_INTERVAL(this);
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}
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static const uint8_t LUT_VCOM_DC_4_2[] = {
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0x00, 0x17, 0x00, 0x00, 0x00, 0x02, 0x00, 0x17, 0x17, 0x00, 0x00, 0x02, 0x00, 0x0A, 0x01,
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0x00, 0x00, 0x01, 0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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@ -146,6 +146,26 @@ class WaveshareEPaper2P7In : public WaveshareEPaper {
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int get_height_internal() override;
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};
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class GDEY029T94 : public WaveshareEPaper {
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public:
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void initialize() override;
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void display() override;
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void dump_config() override;
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void deep_sleep() override {
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// COMMAND DEEP SLEEP
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this->command(0x07);
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this->data(0xA5); // check byte
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}
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protected:
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int get_width_internal() override;
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int get_height_internal() override;
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};
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class WaveshareEPaper2P9InB : public WaveshareEPaper {
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public:
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void initialize() override;
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