Support tri-color waveshare eink displays 2.7inch B and B V2 (#4238)

Co-authored-by: Richard Nauber <richard@nauber.dev>

esphome/components/waveshare_epaper/display.py

@@ -17,8 +17,12 @@ from esphome.const import (
 DEPENDENCIES = ["spi"]
 
 waveshare_epaper_ns = cg.esphome_ns.namespace("waveshare_epaper")
-WaveshareEPaper = waveshare_epaper_ns.class_(
+WaveshareEPaperBase = waveshare_epaper_ns.class_(
-    "WaveshareEPaper", cg.PollingComponent, spi.SPIDevice, display.DisplayBuffer
+    "WaveshareEPaperBase", cg.PollingComponent, spi.SPIDevice, display.DisplayBuffer
+)
+WaveshareEPaper = waveshare_epaper_ns.class_("WaveshareEPaper", WaveshareEPaperBase)
+WaveshareEPaperBWR = waveshare_epaper_ns.class_(
+    "WaveshareEPaperBWR", WaveshareEPaperBase
 )
 WaveshareEPaperTypeA = waveshare_epaper_ns.class_(
     "WaveshareEPaperTypeA", WaveshareEPaper
@@ -26,6 +30,12 @@ WaveshareEPaperTypeA = waveshare_epaper_ns.class_(
 WaveshareEPaper2P7In = waveshare_epaper_ns.class_(
     "WaveshareEPaper2P7In", WaveshareEPaper
 )
+WaveshareEPaper2P7InB = waveshare_epaper_ns.class_(
+    "WaveshareEPaper2P7InB", WaveshareEPaperBWR
+)
+WaveshareEPaper2P7InBV2 = waveshare_epaper_ns.class_(
+    "WaveshareEPaper2P7InBV2", WaveshareEPaperBWR
+)
 WaveshareEPaper2P7InV2 = waveshare_epaper_ns.class_(
     "WaveshareEPaper2P7InV2", WaveshareEPaper
 )
@@ -92,6 +102,8 @@ MODELS = {
     "2.90inv2": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN_V2),
     "gdey029t94": ("c", GDEY029T94),
     "2.70in": ("b", WaveshareEPaper2P7In),
+    "2.70in-b": ("b", WaveshareEPaper2P7InB),
+    "2.70in-bv2": ("b", WaveshareEPaper2P7InBV2),
     "2.70inv2": ("b", WaveshareEPaper2P7InV2),
     "2.90in-b": ("b", WaveshareEPaper2P9InB),
     "2.90in-bv3": ("b", WaveshareEPaper2P9InBV3),
@@ -130,7 +142,7 @@ def validate_full_update_every_only_types_ac(value):
 CONFIG_SCHEMA = cv.All(
     display.FULL_DISPLAY_SCHEMA.extend(
         {
-            cv.GenerateID(): cv.declare_id(WaveshareEPaper),
+            cv.GenerateID(): cv.declare_id(WaveshareEPaperBase),
             cv.Required(CONF_DC_PIN): pins.gpio_output_pin_schema,
             cv.Required(CONF_MODEL): cv.one_of(*MODELS, lower=True),
             cv.Optional(CONF_RESET_PIN): pins.gpio_output_pin_schema,

esphome/components/waveshare_epaper/waveshare_epaper.cpp

@@ -83,7 +83,7 @@ static const uint8_t PARTIAL_UPDATE_LUT_TTGO_B1[LUT_SIZE_TTGO_B1] = {
     0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x0F, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 
-void WaveshareEPaper::setup_pins_() {
+void WaveshareEPaperBase::setup_pins_() {
   this->init_internal_(this->get_buffer_length_());
   this->dc_pin_->setup();  // OUTPUT
   this->dc_pin_->digital_write(false);
@@ -98,13 +98,13 @@ void WaveshareEPaper::setup_pins_() {
 
   this->reset_();
 }
-float WaveshareEPaper::get_setup_priority() const { return setup_priority::PROCESSOR; }
+float WaveshareEPaperBase::get_setup_priority() const { return setup_priority::PROCESSOR; }
-void WaveshareEPaper::command(uint8_t value) {
+void WaveshareEPaperBase::command(uint8_t value) {
   this->start_command_();
   this->write_byte(value);
   this->end_command_();
 }
-void WaveshareEPaper::data(uint8_t value) {
+void WaveshareEPaperBase::data(uint8_t value) {
   this->start_data_();
   this->write_byte(value);
   this->end_data_();
@@ -112,7 +112,7 @@ void WaveshareEPaper::data(uint8_t value) {
 
 // write a command followed by one or more bytes of data.
 // The command is the first byte, length is the total including cmd.
-void WaveshareEPaper::cmd_data(const uint8_t *c_data, size_t length) {
+void WaveshareEPaperBase::cmd_data(const uint8_t *c_data, size_t length) {
   this->dc_pin_->digital_write(false);
   this->enable();
   this->write_byte(c_data[0]);
@@ -121,7 +121,7 @@ void WaveshareEPaper::cmd_data(const uint8_t *c_data, size_t length) {
   this->disable();
 }
 
-bool WaveshareEPaper::wait_until_idle_() {
+bool WaveshareEPaperBase::wait_until_idle_() {
   if (this->busy_pin_ == nullptr || !this->busy_pin_->digital_read()) {
     return true;
   }
@@ -136,7 +136,7 @@ bool WaveshareEPaper::wait_until_idle_() {
   }
   return true;
 }
-void WaveshareEPaper::update() {
+void WaveshareEPaperBase::update() {
   this->do_update_();
   this->display();
 }
@@ -159,20 +159,51 @@ void HOT WaveshareEPaper::draw_absolute_pixel_internal(int x, int y, Color color
     this->buffer_[pos] &= ~(0x80 >> subpos);
   }
 }
+
 uint32_t WaveshareEPaper::get_buffer_length_() {
   return this->get_width_controller() * this->get_height_internal() / 8u;
+}  // just a black buffer
+uint32_t WaveshareEPaperBWR::get_buffer_length_() {
+  return this->get_width_controller() * this->get_height_internal() / 4u;
+}  // black and red buffer
+
+void WaveshareEPaperBWR::fill(Color color) {
+  this->filled_rectangle(0, 0, this->get_width(), this->get_height(), color);
 }
-void WaveshareEPaper::start_command_() {
+void HOT WaveshareEPaperBWR::draw_absolute_pixel_internal(int x, int y, Color color) {
+  if (x >= this->get_width_internal() || y >= this->get_height_internal() || x < 0 || y < 0)
+    return;
+
+  const uint32_t buf_half_len = this->get_buffer_length_() / 2u;
+
+  const uint32_t pos = (x + y * this->get_width_internal()) / 8u;
+  const uint8_t subpos = x & 0x07;
+  // flip logic
+  if (color.is_on()) {
+    this->buffer_[pos] |= 0x80 >> subpos;
+  } else {
+    this->buffer_[pos] &= ~(0x80 >> subpos);
+  }
+
+  // draw red pixels only, if the color contains red only
+  if (((color.red > 0) && (color.green == 0) && (color.blue == 0))) {
+    this->buffer_[pos + buf_half_len] |= 0x80 >> subpos;
+  } else {
+    this->buffer_[pos + buf_half_len] &= ~(0x80 >> subpos);
+  }
+}
+
+void WaveshareEPaperBase::start_command_() {
   this->dc_pin_->digital_write(false);
   this->enable();
 }
-void WaveshareEPaper::end_command_() { this->disable(); }
+void WaveshareEPaperBase::end_command_() { this->disable(); }
-void WaveshareEPaper::start_data_() {
+void WaveshareEPaperBase::start_data_() {
   this->dc_pin_->digital_write(true);
   this->enable();
 }
-void WaveshareEPaper::end_data_() { this->disable(); }
+void WaveshareEPaperBase::end_data_() { this->disable(); }
-void WaveshareEPaper::on_safe_shutdown() { this->deep_sleep(); }
+void WaveshareEPaperBase::on_safe_shutdown() { this->deep_sleep(); }
 
 // ========================================================
 //                          Type A
@@ -493,7 +524,7 @@ uint32_t WaveshareEPaperTypeA::idle_timeout_() {
     case TTGO_EPAPER_2_13_IN_B1:
       return 2500;
     default:
-      return WaveshareEPaper::idle_timeout_();
+      return WaveshareEPaperBase::idle_timeout_();
   }
 }
 
@@ -699,6 +730,246 @@ void WaveshareEPaper2P7InV2::dump_config() {
   LOG_UPDATE_INTERVAL(this);
 }
 
+// ========================================================
+//                          2.7inch_e-paper_b
+// ========================================================
+// Datasheet:
+//  - https://www.waveshare.com/w/upload/d/d8/2.7inch-e-paper-b-specification.pdf
+//  - https://github.com/waveshare/e-Paper/blob/master/RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_2in7b.c
+
+static const uint8_t LUT_VCOM_DC_2_7B[44] = {0x00, 0x00, 0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A,
+                                             0x00, 0x00, 0x08, 0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x00, 0x0A,
+                                             0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00,
+                                             0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01};
+
+static const uint8_t LUT_WHITE_TO_WHITE_2_7B[42] = {0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00,
+                                                    0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00,
+                                                    0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E,
+                                                    0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01};
+
+static const uint8_t LUT_BLACK_TO_WHITE_2_7B[42] = {0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A, 0x00, 0x00,
+                                                    0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x90, 0x0A, 0x0A, 0x00,
+                                                    0x00, 0x08, 0xB0, 0x04, 0x10, 0x00, 0x00, 0x05, 0xB0, 0x03, 0x0E,
+                                                    0x00, 0x00, 0x0A, 0xC0, 0x23, 0x00, 0x00, 0x00, 0x01};
+
+static const uint8_t LUT_WHITE_TO_BLACK_2_7B[] = {0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x20, 0x0A, 0x0A, 0x00, 0x00,
+                                                  0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x10, 0x0A, 0x0A, 0x00,
+                                                  0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E,
+                                                  0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01};
+
+static const uint8_t LUT_BLACK_TO_BLACK_2_7B[42] = {0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00,
+                                                    0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00,
+                                                    0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E,
+                                                    0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01};
+
+void WaveshareEPaper2P7InB::initialize() {
+  this->reset_();
+
+  // command power on
+  this->command(0x04);
+  this->wait_until_idle_();
+  delay(10);
+
+  // Command panel setting
+  this->command(0x00);
+  this->data(0xAF);  // KW-BF   KWR-AF    BWROTP 0f
+  // command pll control
+  this->command(0x30);
+  this->data(0x3A);  // 3A 100HZ   29 150Hz 39 200HZ    31 171HZ
+
+  // command power setting
+  this->command(0x01);
+  this->data(0x03);  // VDS_EN, VDG_EN
+  this->data(0x00);  // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
+  this->data(0x2B);  // VDH
+  this->data(0x2B);  // VDL
+  this->data(0x09);  // VDHR
+
+  // command booster soft start
+  this->command(0x06);
+  this->data(0x07);
+  this->data(0x07);
+  this->data(0x17);
+
+  // Power optimization - ???
+  this->command(0xF8);
+  this->data(0x60);
+  this->data(0xA5);
+  this->command(0xF8);
+  this->data(0x89);
+  this->data(0xA5);
+  this->command(0xF8);
+  this->data(0x90);
+  this->data(0x00);
+  this->command(0xF8);
+  this->data(0x93);
+  this->data(0x2A);
+  this->command(0xF8);
+  this->data(0x73);
+  this->data(0x41);
+
+  // COMMAND VCM DC SETTING
+  this->command(0x82);
+  this->data(0x12);
+
+  // VCOM_AND_DATA_INTERVAL_SETTING
+  this->command(0x50);
+  this->data(0x87);  // define by OTP
+
+  delay(2);
+  // COMMAND LUT FOR VCOM
+  this->command(0x20);
+  for (uint8_t i : LUT_VCOM_DC_2_7B)
+    this->data(i);
+  // COMMAND LUT WHITE TO WHITE
+  this->command(0x21);
+  for (uint8_t i : LUT_WHITE_TO_WHITE_2_7B)
+    this->data(i);
+  // COMMAND LUT BLACK TO WHITE
+  this->command(0x22);
+  for (uint8_t i : LUT_BLACK_TO_WHITE_2_7B)
+    this->data(i);
+  // COMMAND LUT WHITE TO BLACK
+  this->command(0x23);
+  for (uint8_t i : LUT_WHITE_TO_BLACK_2_7B) {
+    this->data(i);
+  }
+  // COMMAND LUT BLACK TO BLACK
+  this->command(0x24);
+
+  for (uint8_t i : LUT_BLACK_TO_BLACK_2_7B) {
+    this->data(i);
+  }
+
+  delay(2);
+}
+
+void HOT WaveshareEPaper2P7InB::display() {
+  uint32_t buf_len_half = this->get_buffer_length_() >> 1;
+  this->initialize();
+
+  // TCON_RESOLUTION
+  this->command(0x61);
+  this->data(this->get_width_internal() >> 8);
+  this->data(this->get_width_internal() & 0xff);  // 176
+  this->data(this->get_height_internal() >> 8);
+  this->data(this->get_height_internal() & 0xff);  // 264
+
+  // COMMAND DATA START TRANSMISSION 1 (BLACK)
+  this->command(0x10);
+  delay(2);
+  for (uint32_t i = 0; i < buf_len_half; i++) {
+    this->data(this->buffer_[i]);
+  }
+  this->command(0x11);
+  delay(2);
+
+  // COMMAND DATA START TRANSMISSION 2  (RED)
+  this->command(0x13);
+  delay(2);
+  for (uint32_t i = buf_len_half; i < buf_len_half * 2u; i++) {
+    this->data(this->buffer_[i]);
+  }
+  this->command(0x11);
+
+  delay(2);
+
+  // COMMAND DISPLAY REFRESH
+  this->command(0x12);
+  this->wait_until_idle_();
+
+  this->deep_sleep();
+}
+int WaveshareEPaper2P7InB::get_width_internal() { return 176; }
+int WaveshareEPaper2P7InB::get_height_internal() { return 264; }
+void WaveshareEPaper2P7InB::dump_config() {
+  LOG_DISPLAY("", "Waveshare E-Paper", this);
+  ESP_LOGCONFIG(TAG, "  Model: 2.7in B");
+  LOG_PIN("  Reset Pin: ", this->reset_pin_);
+  LOG_PIN("  DC Pin: ", this->dc_pin_);
+  LOG_PIN("  Busy Pin: ", this->busy_pin_);
+  LOG_UPDATE_INTERVAL(this);
+}
+
+// ========================================================
+//                          2.7inch_e-paper_b_v2
+// ========================================================
+// Datasheet:
+//  - https://www.waveshare.com/w/upload/7/7b/2.7inch-e-paper-b-v2-specification.pdf
+//  - https://github.com/waveshare/e-Paper/blob/master/RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_2in7b_V2.c
+
+void WaveshareEPaper2P7InBV2::initialize() {
+  this->reset_();
+
+  this->wait_until_idle_();
+  this->command(0x12);
+  this->wait_until_idle_();
+
+  this->command(0x00);
+  this->data(0x27);
+  this->data(0x01);
+  this->data(0x00);
+
+  this->command(0x11);
+  this->data(0x03);
+
+  // self.SetWindows(0, 0, self.width-1, self.height-1)
+  // SetWindows(self, Xstart, Ystart, Xend, Yend):
+
+  uint32_t xend = this->get_width_internal() - 1;
+  uint32_t yend = this->get_height_internal() - 1;
+  this->command(0x44);
+  this->data(0x00);
+  this->data((xend >> 3) & 0xff);
+
+  this->command(0x45);
+  this->data(0x00);
+  this->data(0x00);
+  this->data(yend & 0xff);
+  this->data((yend >> 8) & 0xff);
+
+  // SetCursor(self, Xstart, Ystart):
+  this->command(0x4E);
+  this->data(0x00);
+  this->command(0x4F);
+  this->data(0x00);
+  this->data(0x00);
+}
+
+void HOT WaveshareEPaper2P7InBV2::display() {
+  uint32_t buf_len = this->get_buffer_length_();
+  // COMMAND DATA START TRANSMISSION 1 (BLACK)
+  this->command(0x24);
+  delay(2);
+  for (uint32_t i = 0; i < buf_len; i++) {
+    this->data(this->buffer_[i]);
+  }
+  delay(2);
+
+  // COMMAND DATA START TRANSMISSION 2  (RED)
+  this->command(0x26);
+  delay(2);
+  for (uint32_t i = 0; i < buf_len; i++) {
+    this->data(this->buffer_[i]);
+  }
+
+  delay(2);
+
+  this->command(0x20);
+
+  this->wait_until_idle_();
+}
+int WaveshareEPaper2P7InBV2::get_width_internal() { return 176; }
+int WaveshareEPaper2P7InBV2::get_height_internal() { return 264; }
+void WaveshareEPaper2P7InBV2::dump_config() {
+  LOG_DISPLAY("", "Waveshare E-Paper", this);
+  ESP_LOGCONFIG(TAG, "  Model: 2.7in B V2");
+  LOG_PIN("  Reset Pin: ", this->reset_pin_);
+  LOG_PIN("  DC Pin: ", this->dc_pin_);
+  LOG_PIN("  Busy Pin: ", this->busy_pin_);
+  LOG_UPDATE_INTERVAL(this);
+}
+
 // ========================================================
 //               2.90in Type B (LUT from OTP)
 // Datasheet:

esphome/components/waveshare_epaper/waveshare_epaper.h

@@ -7,9 +7,9 @@
 namespace esphome {
 namespace waveshare_epaper {
 
-class WaveshareEPaper : public display::DisplayBuffer,
+class WaveshareEPaperBase : public display::DisplayBuffer,
-                        public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                            public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                              spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_2MHZ> {
+                                                  spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_2MHZ> {
  public:
   void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
   float get_setup_priority() const override;
@@ -27,8 +27,6 @@ class WaveshareEPaper : public display::DisplayBuffer,
 
   void update() override;
 
-  void fill(Color color) override;
-
   void setup() override {
     this->setup_pins_();
     this->initialize();
@@ -36,11 +34,7 @@ class WaveshareEPaper : public display::DisplayBuffer,
 
   void on_safe_shutdown() override;
 
-  display::DisplayType get_display_type() override { return display::DisplayType::DISPLAY_TYPE_BINARY; }
-
  protected:
-  void draw_absolute_pixel_internal(int x, int y, Color color) override;
-
   bool wait_until_idle_();
 
   void setup_pins_();
@@ -56,7 +50,7 @@ class WaveshareEPaper : public display::DisplayBuffer,
 
   virtual int get_width_controller() { return this->get_width_internal(); };
 
-  uint32_t get_buffer_length_();
+  virtual uint32_t get_buffer_length_() = 0;  // NOLINT(readability-identifier-naming)
   uint32_t reset_duration_{200};
 
   void start_command_();
@@ -70,6 +64,28 @@ class WaveshareEPaper : public display::DisplayBuffer,
   virtual uint32_t idle_timeout_() { return 1000u; }  // NOLINT(readability-identifier-naming)
 };
 
+class WaveshareEPaper : public WaveshareEPaperBase {
+ public:
+  void fill(Color color) override;
+
+  display::DisplayType get_display_type() override { return display::DisplayType::DISPLAY_TYPE_BINARY; }
+
+ protected:
+  void draw_absolute_pixel_internal(int x, int y, Color color) override;
+  uint32_t get_buffer_length_() override;
+};
+
+class WaveshareEPaperBWR : public WaveshareEPaperBase {
+ public:
+  void fill(Color color) override;
+
+  display::DisplayType get_display_type() override { return display::DisplayType::DISPLAY_TYPE_COLOR; }
+
+ protected:
+  void draw_absolute_pixel_internal(int x, int y, Color color) override;
+  uint32_t get_buffer_length_() override;
+};
+
 enum WaveshareEPaperTypeAModel {
   WAVESHARE_EPAPER_1_54_IN = 0,
   WAVESHARE_EPAPER_1_54_IN_V2,
@@ -134,6 +150,8 @@ class WaveshareEPaperTypeA : public WaveshareEPaper {
 
 enum WaveshareEPaperTypeBModel {
   WAVESHARE_EPAPER_2_7_IN = 0,
+  WAVESHARE_EPAPER_2_7_IN_B,
+  WAVESHARE_EPAPER_2_7_IN_B_V2,
   WAVESHARE_EPAPER_4_2_IN,
   WAVESHARE_EPAPER_4_2_IN_B_V2,
   WAVESHARE_EPAPER_7_5_IN,
@@ -155,6 +173,68 @@ class WaveshareEPaper2P7In : public WaveshareEPaper {
     this->data(0xA5);  // check byte
   }
 
+ protected:
+  int get_width_internal() override;
+  int get_height_internal() override;
+};
+
+class WaveshareEPaper2P7InB : public WaveshareEPaperBWR {
+ public:
+  void initialize() override;
+
+  void display() override;
+
+  void dump_config() override;
+
+  void deep_sleep() override {
+    // COMMAND VCOM_AND_DATA_INTERVAL_SETTING
+    this->command(0x50);
+    // COMMAND POWER OFF
+    this->command(0x02);
+    this->wait_until_idle_();
+    // COMMAND DEEP SLEEP
+    this->command(0x07);  // deep sleep
+    this->data(0xA5);     // check byte
+  }
+
+ protected:
+  int get_width_internal() override;
+  int get_height_internal() override;
+};
+
+class WaveshareEPaper2P7InBV2 : public WaveshareEPaperBWR {
+ public:
+  void initialize() override;
+
+  void display() override;
+
+  void dump_config() override;
+
+  void deep_sleep() override {
+    // COMMAND DEEP SLEEP
+    this->command(0x10);
+    this->data(0x01);
+  }
+
+ protected:
+  int get_width_internal() override;
+  int get_height_internal() override;
+};
+
+class GDEY029T94 : public WaveshareEPaper {
+ public:
+  void initialize() override;
+
+  void display() override;
+
+  void dump_config() override;
+
+  void deep_sleep() override {
+    // COMMAND DEEP SLEEP
+    this->command(0x07);
+    this->data(0xA5);  // check byte
+  }
+
  protected:
   int get_width_internal() override;
 
@@ -177,26 +257,6 @@ class WaveshareEPaper2P7InV2 : public WaveshareEPaper {
   int get_height_internal() override;
 };
 
-class GDEY029T94 : public WaveshareEPaper {
- public:
-  void initialize() override;
-
-  void display() override;
-
-  void dump_config() override;
-
-  void deep_sleep() override {
-    // COMMAND DEEP SLEEP
-    this->command(0x07);
-    this->data(0xA5);  // check byte
-  }
-
- protected:
-  int get_width_internal() override;
-
-  int get_height_internal() override;
-};
-
 class GDEW0154M09 : public WaveshareEPaper {
  public:
   void initialize() override;

tests/test4.yaml

@@ -671,6 +671,40 @@ display:
     full_update_every: 30
     lambda: |-
       it.rectangle(0, 0, it.get_width(), it.get_height());
+  - platform: waveshare_epaper
+    spi_id: spi_id_1
+    cs_pin:
+      allow_other_uses: true
+      number: GPIO23
+    dc_pin:
+      allow_other_uses: true
+      number: GPIO23
+    busy_pin:
+      allow_other_uses: true
+      number: GPIO23
+    reset_pin:
+      allow_other_uses: true
+      number: GPIO23
+    model: 2.70in-b
+    lambda: |-
+      it.rectangle(0, 0, it.get_width(), it.get_height());
+  - platform: waveshare_epaper
+    spi_id: spi_id_1
+    cs_pin:
+      allow_other_uses: true
+      number: GPIO23
+    dc_pin:
+      allow_other_uses: true
+      number: GPIO23
+    busy_pin:
+      allow_other_uses: true
+      number: GPIO23
+    reset_pin:
+      allow_other_uses: true
+      number: GPIO23
+    model: 2.70in-bv2
+    lambda: |-
+      it.rectangle(0, 0, it.get_width(), it.get_height());
   - platform: waveshare_epaper
     spi_id: spi_id_1
     cs_pin: