From b02acd993d27fd99503d9c9c53e10b19ec1c207c Mon Sep 17 00:00:00 2001
From: hackbard <hackbard@staubsauger.localdomain>
Date: Thu, 13 Sep 2007 02:22:23 +0200
Subject: [PATCH] basic lcd control (must get improved!)

---
 betty/betty.c   |  6 ++----
 betty/display.c | 44 ++++++++++++++++++++++++--------------------
 betty/display.h |  1 +
 3 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/betty/betty.c b/betty/betty.c
index ed42475..e5923e9 100644
--- a/betty/betty.c
+++ b/betty/betty.c
@@ -51,6 +51,7 @@ int main() {
 	pause(0xffffff);
 
 	/* display init */
+	display_bl_toggle();
 	display_init();
 	contrast=0x38;
 
@@ -81,10 +82,7 @@ int main() {
 					DISPLAY_SET_CONTRAST(contrast);
 					break;
 				default:
-					DISPLAY_SET_C_ADDR(0);
-					DISPLAY_SET_PAGE_ADDR(0);
-					for(cnt=0;cnt<DISPLAY_RAM_CONTENT;cnt++)
-						DISPLAY_DATA=button.key[0];
+					display_clear_screen();
 					break;
 			}
 		}
diff --git a/betty/display.c b/betty/display.c
index 71791fc..e102141 100644
--- a/betty/display.c
+++ b/betty/display.c
@@ -16,13 +16,16 @@
 
 void display_clear_screen(void) {
 
-	u32 cnt;
-
-	DISPLAY_SET_PAGE_ADDR(0);
-	DISPLAY_SET_C_ADDR(0);
-
-	for(cnt=0;cnt<DISPLAY_RAM_CONTENT;cnt++)
-		DISPLAY_DATA=0x00;
+	u8 page,width;
+
+	for(page=0;page<DISPLAY_PAGE_MAX;page++) {
+		DISPLAY_SET_C_ADDR(0);
+		DISPLAY_SET_PAGE_ADDR(page);
+		for(width=0;width<DISPLAY_DIMX;width++) {
+			DISPLAY_DATA=0x00;
+			DISPLAY_DATA=0x00;
+		}
+	}
 }
 
 void display_init(void) {
@@ -40,19 +43,14 @@ void display_init(void) {
 
 	DISPLAY_SET_CONV_FACTOR(0x01);
 
-	DISPLAY_SET_UW_CORNER(0x1c,0x0a);
-	DISPLAY_SET_LW_CORNER(0x75,0x81);
-
 	DISPLAY_SET_PWM_FRC(0,0);
 
+	// gray scale palette
 	DISPLAY_SET_WHITE(0,0,0,0);
-	DISPLAY_SET_LGRAY(4,4,4,4);
+	DISPLAY_SET_LGRAY(2,2,2,2);
 	DISPLAY_SET_DGRAY(6,6,6,6);
 	DISPLAY_SET_BLACK(9,9,9,9);
 
-	DISPLAY_SET_SEGMENT_REMAP_00H;
-	DISPLAY_SET_COM_ODIR_REMAPPED;
-
 	DISPLAY_SET_POWER(DISPLAY_REGULATOR|DISPLAY_OPAMP);
 	pause(0xffffff);
 	DISPLAY_SET_POWER(DISPLAY_V_BOOST|DISPLAY_REGULATOR|DISPLAY_OPAMP);
@@ -68,18 +66,24 @@ void display_init(void) {
 
 void display_load_logo(u8 *src) {
 
-	u32 cnt;
 	u8 *s;
+	u8 page,width;
+	u32 cnt;
 
 	s=src;
 	if(s==0)
 		s=default_logo;
 
-	DISPLAY_SET_PAGE_ADDR(0);
-	DISPLAY_SET_C_ADDR(0);
-
-	for(cnt=0;cnt<DISPLAY_RAM_CONTENT;cnt++)
-		DISPLAY_DATA=s[cnt];
+	cnt=0;
+	for(page=0;page<DISPLAY_PAGE_MAX;page++) {
+		DISPLAY_SET_C_ADDR(0);
+		DISPLAY_SET_PAGE_ADDR(page);
+		for(width=0;width<DISPLAY_DIMX;width++) {
+			DISPLAY_DATA=s[cnt];
+			DISPLAY_DATA=s[cnt+1];
+			cnt+=2;
+		}
+	}
 }
 
 void display_bl_init(void) {
diff --git a/betty/display.h b/betty/display.h
index 0926655..b129d88 100644
--- a/betty/display.h
+++ b/betty/display.h
@@ -95,6 +95,7 @@
 #define DISPLAY_EXTENDED_FEATURES	DISPLAY_CMD=0xf0
 
 /* function prototypes */
+void display_clear_screen(void);
 void display_init(void);
 void display_load_logo(u8 *src);
 void display_bl_init(void);
-- 
2.20.1