From 784dff7574ee39554759eb7681e8486bcc4219e6 Mon Sep 17 00:00:00 2001
From: Fabian Pflug <gumulka@users.noreply.github.com>
Date: Thu, 21 Dec 2023 05:30:10 +0100
Subject: [PATCH] Add waveshare 2.7in V2 model (#5903)

---
 .../components/waveshare_epaper/display.py    |  4 ++
 .../waveshare_epaper/waveshare_epaper.cpp     | 53 +++++++++++++++++++
 .../waveshare_epaper/waveshare_epaper.h       | 16 ++++++
 3 files changed, 73 insertions(+)

diff --git a/esphome/components/waveshare_epaper/display.py b/esphome/components/waveshare_epaper/display.py
index 519b07fca2..432c7b6119 100644
--- a/esphome/components/waveshare_epaper/display.py
+++ b/esphome/components/waveshare_epaper/display.py
@@ -26,6 +26,9 @@ WaveshareEPaperTypeA = waveshare_epaper_ns.class_(
 WaveshareEPaper2P7In = waveshare_epaper_ns.class_(
     "WaveshareEPaper2P7In", WaveshareEPaper
 )
+WaveshareEPaper2P7InV2 = waveshare_epaper_ns.class_(
+    "WaveshareEPaper2P7InV2", WaveshareEPaper
+)
 WaveshareEPaper2P9InB = waveshare_epaper_ns.class_(
     "WaveshareEPaper2P9InB", WaveshareEPaper
 )
@@ -83,6 +86,7 @@ MODELS = {
     "2.90inv2": ("a", WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN_V2),
     "gdey029t94": ("c", GDEY029T94),
     "2.70in": ("b", WaveshareEPaper2P7In),
+    "2.70inv2": ("b", WaveshareEPaper2P7InV2),
     "2.90in-b": ("b", WaveshareEPaper2P9InB),
     "4.20in": ("b", WaveshareEPaper4P2In),
     "4.20in-bv2": ("b", WaveshareEPaper4P2InBV2),
diff --git a/esphome/components/waveshare_epaper/waveshare_epaper.cpp b/esphome/components/waveshare_epaper/waveshare_epaper.cpp
index 8fdb9a3ac0..4cd5e3366c 100644
--- a/esphome/components/waveshare_epaper/waveshare_epaper.cpp
+++ b/esphome/components/waveshare_epaper/waveshare_epaper.cpp
@@ -634,6 +634,59 @@ void WaveshareEPaper2P7In::dump_config() {
   LOG_UPDATE_INTERVAL(this);
 }
 
+void WaveshareEPaper2P7InV2::initialize() {
+  this->reset_();
+  this->wait_until_idle_();
+
+  this->command(0x12);  // SWRESET
+  this->wait_until_idle_();
+
+  // SET WINDOWS
+  // XRAM_START_AND_END_POSITION
+  this->command(0x44);
+  this->data(0x00);
+  this->data(((get_width_internal() - 1) >> 3) & 0xFF);
+  // YRAM_START_AND_END_POSITION
+  this->command(0x45);
+  this->data(0x00);
+  this->data(0x00);
+  this->data((get_height_internal() - 1) & 0xFF);
+  this->data(((get_height_internal() - 1) >> 8) & 0xFF);
+
+  // SET CURSOR
+  // XRAM_ADDRESS
+  this->command(0x4E);
+  this->data(0x00);
+  // YRAM_ADDRESS
+  this->command(0x4F);
+  this->data(0x00);
+  this->data(0x00);
+
+  this->command(0x11);  // data entry mode
+  this->data(0x03);
+}
+void HOT WaveshareEPaper2P7InV2::display() {
+  this->command(0x24);
+  this->start_data_();
+  this->write_array(this->buffer_, this->get_buffer_length_());
+  this->end_data_();
+
+  // COMMAND DISPLAY REFRESH
+  this->command(0x22);
+  this->data(0xF7);
+  this->command(0x20);
+}
+int WaveshareEPaper2P7InV2::get_width_internal() { return 176; }
+int WaveshareEPaper2P7InV2::get_height_internal() { return 264; }
+void WaveshareEPaper2P7InV2::dump_config() {
+  LOG_DISPLAY("", "Waveshare E-Paper", this);
+  ESP_LOGCONFIG(TAG, "  Model: 2.7in 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:
diff --git a/esphome/components/waveshare_epaper/waveshare_epaper.h b/esphome/components/waveshare_epaper/waveshare_epaper.h
index 42e8a16829..bc5dbea11d 100644
--- a/esphome/components/waveshare_epaper/waveshare_epaper.h
+++ b/esphome/components/waveshare_epaper/waveshare_epaper.h
@@ -160,6 +160,22 @@ class WaveshareEPaper2P7In : public WaveshareEPaper {
   int get_height_internal() override;
 };
 
+class WaveshareEPaper2P7InV2 : public WaveshareEPaper {
+ public:
+  void initialize() override;
+
+  void display() override;
+
+  void dump_config() override;
+
+  void deep_sleep() override { ; }
+
+ protected:
+  int get_width_internal() override;
+
+  int get_height_internal() override;
+};
+
 class GDEY029T94 : public WaveshareEPaper {
  public:
   void initialize() override;