From 826cfaf81cc989897b719a54321319aff9088f77 Mon Sep 17 00:00:00 2001
From: kraus <olikraus@gmail.com>
Date: Sat, 27 Apr 2024 12:12:48 +0200
Subject: [PATCH] update, issue #2421

---
 csrc/u8x8_d_pcf8812.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/csrc/u8x8_d_pcf8812.c b/csrc/u8x8_d_pcf8812.c
index b0881e41..aae8993a 100644
--- a/csrc/u8x8_d_pcf8812.c
+++ b/csrc/u8x8_d_pcf8812.c
@@ -60,6 +60,7 @@ static const uint8_t u8x8_d_pcf8812_96x65_init_seq[] = {
   U8X8_END()             			/* end of sequence */
 };
 
+
 static const uint8_t u8x8_d_pcf8812_96x65_powersave0_seq[] = {
   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
   U8X8_C(0x020),		                /* power on */
@@ -190,7 +191,6 @@ uint8_t u8x8_d_pcf8812_96x65(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *a
     return u8x8_d_pcf8812_96x65_generic(u8x8, msg, arg_int, arg_ptr);
 }
 
-
 /* https://github.com/olikraus/u8g2/issues/2421 */
 static const u8x8_display_info_t u8x8_pcf8812_101x64_display_info =
 {
@@ -216,6 +216,20 @@ static const u8x8_display_info_t u8x8_pcf8812_101x64_display_info =
   /* pixel_height = */ 64
 };
 
+static const uint8_t u8x8_d_pcf8812_101x64_init_seq[] = {
+  U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
+  U8X8_C(0x21), // PowerON, ExtCommandSet
+  U8X8_C(0x09), // Internal HV-gen x3
+  U8X8_C(0xB7), // Set Vop
+  U8X8_C(0x16), // Bias n=2    //15
+  U8X8_C(0x06), // Temperature coeff 2
+  U8X8_C(0x20), // StandartCommandSet
+  U8X8_C(0x0C), // normal mode, display non-inverted
+  U8X8_END_TRANSFER(),             	/* disable chip */
+  U8X8_END()             			/* end of sequence */
+};
+
+
 uint8_t u8x8_d_pcf8812_101x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
 {
     if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY )
@@ -223,6 +237,11 @@ uint8_t u8x8_d_pcf8812_101x64(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *
       u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcf8812_101x64_display_info);
       return 1;
     }
+    else if ( msg == U8X8_MSG_DISPLAY_INIT )
+    {
+      u8x8_d_helper_display_init(u8x8);
+      u8x8_cad_SendSequence(u8x8, u8x8_d_pcf8812_101x64_init_seq);    
+    }    
     return u8x8_d_pcf8812_96x65_generic(u8x8, msg, arg_int, arg_ptr);
 }