From 21ea673be1fc0ad7d790bbcc8a2071c6448f8b99 Mon Sep 17 00:00:00 2001
From: Larry Bank <bitbank@pobox.com>
Date: Fri, 26 Sep 2025 20:50:59 +0100
Subject: [PATCH] Added 4clr 4.2 400x300

---
 src/bb_ep.inl   | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/bb_epaper.h |  1 +
 2 files changed, 43 insertions(+)

diff --git a/src/bb_ep.inl b/src/bb_ep.inl
index 8fe9eeb..4decfcd 100644
--- a/src/bb_ep.inl
+++ b/src/bb_ep.inl
@@ -997,6 +997,47 @@ const uint8_t epd35yr_init_fast[] PROGMEM =
    0
 };
 
+const uint8_t epd42yr_init_full[] PROGMEM =
+{
+   0x02, 0x4d, 0x78,
+   0x03, 0x00, 0x0f, 0x29,
+   0x08, 0x06, 0x0d, 0x12, 0x24, 0x25, 0x12, 0x29, 0x10, // BTST
+   0x02, 0x30, 0x08,
+   0x02, 0x50, 0x37,
+   0x05, UC8151_TRES, 0x01, 144, 0x01, 44, // resolution (400x300)
+   0x02, 0xae, 0xcf,
+   0x02, 0xb0, 0x13,
+   0x02, 0xbd, 0x07,
+   0x02, 0xbe, 0xfe,
+   0x02, 0xe9, 0x01,
+   0x01, 0x04, // power on
+   BUSY_WAIT,
+   0
+};
+
+const uint8_t epd42yr_init_fast[] PROGMEM =
+{
+   0x02, 0x4d, 0x78,
+   0x03, 0x00, 0x0f, 0x29, // PSR
+   0x03, 0x01, 0x07, 0x00, // PWRR
+   0x04, 0x03, 0x10, 0x54, 0x44, // POFS
+   0x08, 0x06, 0x0f, 0x0a, 0x2f, 0x25, 0x22, 0x2e, 0x21, // BTST_P
+   0x02, 0x50, 0x37, // CDI
+   0x05, UC8151_TRES, 0x01, 144, 0x01, 44, // resolution (400x300)
+   0x02, 0xe3, 0x22,
+   0x02, 0xb6, 0x6f,
+   0x02, 0xb4, 0xd0,
+   0x02, 0xe9, 0x01,
+   0x02, 0x30, 0x08,
+   0x01, 0x04, // power on
+   BUSY_WAIT,
+   0x02, 0xe0, 0x02,
+   0x02, 0xe6, 0x5a,
+   0x02, 0xa5, 0x00,
+   BUSY_WAIT,
+   0
+};
+
 const uint8_t epd266yr_init_full[] PROGMEM = 
 {
    0x02, 0x4d, 0x78,
@@ -2616,6 +2657,7 @@ const EPD_PANEL panelDefs[] PROGMEM = {
     {800, 480, 0, epd397yr_init_full, epd397yr_init_fast, NULL, BBEP_4COLOR, BBEP_CHIP_UC81xx, u8Colors_4clr_v2}, // EP397YR_800x480
     {200, 200, 0, epd154yr_init_full, epd154yr_init_fast, NULL, BBEP_4COLOR, BBEP_CHIP_UC81xx, u8Colors_4clr_v2}, // EP154YR_200x200
     {184, 360, 0, epd266yr_init_full, epd266yr_init_fast, NULL, BBEP_4COLOR, BBEP_CHIP_UC81xx, u8Colors_4clr_v2}, // EP266YR2_184x360
+    {400, 300, 0, epd42yr_init_full, epd42yr_init_fast, NULL, BBEP_4COLOR, BBEP_CHIP_UC81xx, u8Colors_4clr_v2}, // EP42YR_400x300
 };
 //
 // Set the e-paper panel type
diff --git a/src/bb_epaper.h b/src/bb_epaper.h
index 9eaf448..e811867 100644
--- a/src/bb_epaper.h
+++ b/src/bb_epaper.h
@@ -192,6 +192,7 @@ enum {
     EP397YR_800x480, // GDEM0397F81
     EP154YR_200x200, // GDEM0154F51H
     EP266YR2_184x360, // GDEY0266F52H
+    EP42YR_400x300, // GDEM042F52
     EP_PANEL_COUNT
 };
 #ifdef FUTURE