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Add B/W support for Waveshare 2.90in (B) screen (#889)
* Add B/W support for Waveshare 2.90in (B) screen * Fix for() loop source code formatting
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3 changed files with 101 additions and 0 deletions
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@ -12,6 +12,7 @@ WaveshareEPaper = waveshare_epaper_ns.class_('WaveshareEPaper', cg.PollingCompon
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display.DisplayBuffer)
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WaveshareEPaperTypeA = waveshare_epaper_ns.class_('WaveshareEPaperTypeA', WaveshareEPaper)
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WaveshareEPaper2P7In = waveshare_epaper_ns.class_('WaveshareEPaper2P7In', WaveshareEPaper)
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WaveshareEPaper2P9InB = waveshare_epaper_ns.class_('WaveshareEPaper2P9InB', WaveshareEPaper)
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WaveshareEPaper4P2In = waveshare_epaper_ns.class_('WaveshareEPaper4P2In', WaveshareEPaper)
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WaveshareEPaper7P5In = waveshare_epaper_ns.class_('WaveshareEPaper7P5In', WaveshareEPaper)
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@ -24,6 +25,7 @@ MODELS = {
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'2.13in-ttgo': ('a', WaveshareEPaperTypeAModel.TTGO_EPAPER_2_13_IN),
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'2.90in': ('a', WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN),
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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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'7.50in': ('b', WaveshareEPaper7P5In),
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}
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@ -423,6 +423,85 @@ void WaveshareEPaper2P7In::dump_config() {
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LOG_UPDATE_INTERVAL(this);
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}
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// ========================================================
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// 2.90in Type B (LUT from OTP)
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// Datasheet:
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// - https://www.waveshare.com/w/upload/b/bb/2.9inch-e-paper-b-specification.pdf
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// - https://github.com/soonuse/epd-library-arduino/blob/master/2.9inch_e-paper_b/epd2in9b/epd2in9b.cpp
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// ========================================================
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void WaveshareEPaper2P9InB::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 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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// 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(0x9F);
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// COMMAND RESOLUTION SETTING
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// set to 128x296 by COMMAND PANNEL 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 WaveshareEPaper2P9InB::display() {
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// COMMAND DATA START TRANSMISSION 1 (B/W data)
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this->command(0x10);
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delay(2);
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this->start_data_();
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this->write_array(this->buffer_, this->get_buffer_length_());
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this->end_data_();
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delay(2);
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// COMMAND DATA START TRANSMISSION 2 (RED data)
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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 (int i = 0; i < this->get_buffer_length_(); i++)
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this->write_byte(0x00);
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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 WaveshareEPaper2P9InB::get_width_internal() { return 128; }
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int WaveshareEPaper2P9InB::get_height_internal() { return 296; }
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void WaveshareEPaper2P9InB::dump_config() {
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LOG_DISPLAY("", "Waveshare E-Paper", this);
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ESP_LOGCONFIG(TAG, " Model: 2.9in (B)");
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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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@ -126,6 +126,26 @@ class WaveshareEPaper2P7In : public WaveshareEPaper {
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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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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 WaveshareEPaper4P2In : public WaveshareEPaper {
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public:
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void initialize() override;
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