From 58048e7748568a77d64832e0c9ce2eada1e3873a Mon Sep 17 00:00:00 2001
From: Christophe Huriaux <c.huriaux@gmail.com>
Date: Wed, 6 Jul 2022 22:43:38 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=A9=B9=20Fix=20ST7565=20LCD=20contrast=20?=
=?UTF-8?q?init=20(#24457)?=
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---
Marlin/Configuration.h | 6 ++++++
Marlin/src/inc/Conditionals_LCD.h | 5 ++++-
Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp | 8 +++++---
3 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 15106a20a32..ce2b8fcd6f5 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -2631,6 +2631,12 @@
//
//#define SILVER_GATE_GLCD_CONTROLLER
+//
+// eMotion Tech LCD with SD
+// https://www.reprap-france.com/produit/1234568748-ecran-graphique-128-x-64-points-2-1
+//
+//#define EMOTION_TECH_LCD
+
//=============================================================================
//============================== OLED Displays ==============================
//=============================================================================
diff --git a/Marlin/src/inc/Conditionals_LCD.h b/Marlin/src/inc/Conditionals_LCD.h
index e41bc0d4897..8d29b177dd5 100644
--- a/Marlin/src/inc/Conditionals_LCD.h
+++ b/Marlin/src/inc/Conditionals_LCD.h
@@ -99,7 +99,7 @@
#define IS_ULTIPANEL 1
#define STD_ENCODER_PULSES_PER_STEP 2
-#elif ANY(miniVIKI, VIKI2, WYH_L12864, ELB_FULL_GRAPHIC_CONTROLLER, AZSMZ_12864)
+#elif ANY(miniVIKI, VIKI2, WYH_L12864, ELB_FULL_GRAPHIC_CONTROLLER, AZSMZ_12864, EMOTION_TECH_LCD)
#define DOGLCD
#define IS_DOGM_12864 1
@@ -116,6 +116,9 @@
#define IS_U8GLIB_LM6059_AF 1
#elif ENABLED(AZSMZ_12864)
#define IS_U8GLIB_ST7565_64128N 1
+ #elif ENABLED(EMOTION_TECH_LCD)
+ #define IS_U8GLIB_ST7565_64128N 1
+ #define ST7565_VOLTAGE_DIVIDER_VALUE 0x07
#endif
#elif ENABLED(OLED_PANEL_TINYBOY2)
diff --git a/Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp b/Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp
index bfd44d08dfb..63e7b2e2b8b 100644
--- a/Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp
+++ b/Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp
@@ -74,7 +74,6 @@
#define ST7565_ON(N) ((N) ? 0xAF : 0xAE)
#define ST7565_OUT_MODE(N) ((N) ? 0xC8 : 0xC0)
#define ST7565_POWER_CONTROL(N) (0x28 | (N))
-#define ST7565_V0_RATIO(N) (0x10 | ((N) & 0x7))
#define ST7565_V5_RATIO(N) (0x20 | ((N) & 0x7))
#define ST7565_CONTRAST(N) (0x81), (N)
@@ -106,11 +105,14 @@ static const uint8_t u8g_dev_st7565_64128n_HAL_init_seq[] PROGMEM = {
ST7565_POWER_CONTROL(0x7), // power control: turn on voltage follower
U8G_ESC_DLY(50), // delay 50 ms
- ST7565_V0_RATIO(0), // Set V0 voltage resistor ratio. Setting for controlling brightness of Displaytech 64128N
+ #ifdef ST7565_VOLTAGE_DIVIDER_VALUE
+ // Set V5 voltage resistor ratio. Affects brightness of Displaytech 64128N
+ ST7565_V5_RATIO(ST7565_VOLTAGE_DIVIDER_VALUE),
+ #endif
ST7565_INVERTED(0), // display normal, bit val 0: LCD pixel off.
- ST7565_CONTRAST(0x1E), // Contrast value. Setting for controlling brightness of Displaytech 64128N
+ ST7565_CONTRAST(0x1E), // Contrast value for Displaytech 64128N
ST7565_ON(1), // display on