From 98d1a9b9cbb24b2b182cf86ed2520d398959ec44 Mon Sep 17 00:00:00 2001
From: hackbard <hackbard@staubsauger.localdomain>
Date: Fri, 7 Sep 2007 19:00:24 +0200
Subject: [PATCH] finished/fixed button api

---
 betty/buttons.c | 66 ++++++++++++++++++++++++++++++++++---------------
 betty/buttons.h | 62 ++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 106 insertions(+), 22 deletions(-)

diff --git a/betty/buttons.c b/betty/buttons.c
index 15298a3..9eb99b5 100644
--- a/betty/buttons.c
+++ b/betty/buttons.c
@@ -7,11 +7,11 @@
 
 #include "buttons.h"
 
-void button_init(void) {
+void button_init(t_button *button) {
 
 	/* 
 	 * select as input the following pins
-	 *  - p0.30 : interrupt, wtf is the 'vw 3 p9'?
+	 *  - p0.30 : interrupt! wtf is the 'vw 3 p9'?
 	 *  - p0.28, p0.27, p3.21, p3.20, p0.22, p0.13 : column select
 	 *
 	 *  select as output
@@ -24,38 +24,61 @@ void button_init(void) {
 	PINSEL1&=~((1<<23)|(1<<22));	// p0.27
 	PINSEL1&=~((1<<13)|(1<<12));	// p0.22
 	PINSEL0&=~((1<<27)|(1<<26));	// p0.13
+
 	// ctrl databus for p2.18 - p2.24
 	PINSEL2&=(PINSEL2&(~((1<<5)|(1<<4))))|(1<<4);
+
 	// ctrl addr bus for p3.20, p3.21
 	PINSEL2=(PINSEL2&(~((1<<27)|(1<<26)|(1<<25))))|(1<<27)|(1<<26);
+
 	// input
 	IODIR0&=~((1<<30)|(1<<28)|(1<<27)|(1<<22)|(1<<13));
 	IODIR3&=~((1<<21)|(1<<20));
+
 	// output + pull them high
 	IODIR2|=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
 	IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+
+	/* poll / interrupt mode */
+	if(button->mode&BUTTON_INT) {
+	}
+	else if(button->mode&BUTTON_POLL) {
+	}
 }
 
+void button_set_retries(t_button *button,int retries) {
+
+	button->retries=retries;
+}
+
+#define BUTTON_RESET \
+	IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24))
+
 void button_select_row(u8 row) {
 
-	IOSET2=((1<<18)|(1<<19)|(1<<20)|(1<<21)|(1<<22)|(1<<23)|(1<<24));
+	BUTTON_RESET;
 	if(row>6)
 		return;
 	IOCLR2=(1<<(18+row));
 }
 
-u8 button_get_event(u64 *keys,int retries) {
+#define COUNT_AND_CHECK 	cnt++; \
+				if(cnt==BUTTON_MAX) \
+					break
+
+u8 button_get_event(t_button *button) {
 
 	u8 row;
 	u8 offset;
 	u8 cnt;
 	u32 port0,port3;
+	u8 retries;
 
-	*keys=0;
 	cnt=0;
+	retries=button->retries;
 
 	while(retries--) {
-		/* rest counter */
+		/* rest offset counter */
 		offset=0;
 		/* rows */
 		for(row=0;row<7;row++) {
@@ -63,37 +86,40 @@ u8 button_get_event(u64 *keys,int retries) {
 			button_select_row(row);
 			/* scan the columns 6 */
 			port0=IOPIN0;
-			port3=IOPIN2;
+			port3=IOPIN3;
 			if(!(port0&(1<<28))) {
-				*keys|=(1<<(offset+0));
-				cnt+=1;
+				button->key[cnt]=offset+0;
+				COUNT_AND_CHECK;
 			}
 			if(!(port0&(1<<27))) {
-				*keys|=(1<<(offset+1));
-				cnt+=1;
+				button->key[cnt]=offset+1;
+				COUNT_AND_CHECK;
 			}
 			if(!(port0&(1<<22))) {
-				*keys|=(1<<(offset+2));
-				cnt+=1;
+				button->key[cnt]=offset+2;
+				COUNT_AND_CHECK;
 			}
 			if(!(port0&(1<<13))) {
-				*keys|=(1<<(offset+3));
-				cnt+=1;
+				button->key[cnt]=offset+3;
+				COUNT_AND_CHECK;
 			}
 			if(!(port3&(1<<21))) {
-				*keys|=(1<<(offset+4));
-				cnt+=1;
+				button->key[cnt]=offset+4;
+				COUNT_AND_CHECK;
 			}
 			if(!(port3&(1<<20))) {
-				*keys|=(1<<(offset+5));
-				cnt+=1;
+				button->key[cnt]=offset+5;
+				COUNT_AND_CHECK;
 			}
 			offset+=6;
 		}
-		if(*keys)
+		if(cnt)
 			break;
 	}
 
+	BUTTON_RESET;
+	button->cnt=cnt;
+
 	return cnt;
 }
 
diff --git a/betty/buttons.h b/betty/buttons.h
index e4016b1..3c69ad0 100644
--- a/betty/buttons.h
+++ b/betty/buttons.h
@@ -11,8 +11,66 @@
 /* includes */
 #include "betty.h"
 
+/* defines */
+#define BUTTON_MAX	8
+#define BUTTON_INT	(1<<0)
+#define BUTTON_POLL	(1<<1)
+
+/* typedefs */
+typedef struct s_button {
+	unsigned char mode;		// mode of the button api
+	int retries;			// amount of retries per event capture
+	unsigned char cnt;		// amount of recognized key presses
+	unsigned char key[BUTTON_MAX];	// pressed keys
+} t_button;
+
 /* function prototypes */
-void button_init(void);
-unsigned char button_get_event(unsigned long long int *keys,int retries);
+void button_init(t_button *button);
+void button_set_retries(t_button *button,int retries);
+unsigned char button_get_event(t_button *button);
+
+/* button definitions */
+#define BUTTON_A		0x04
+#define BUTTON_B		0x03
+#define BUTTON_C		0x02
+#define BUTTON_D		0x08
+#define BUTTON_BETTY		0x0a
+#define BUTTON_EXIT		0x14
+#define BUTTON_UP		0x09
+#define BUTTON_DOWN		0x1b
+#define BUTTON_RIGHT		0x0e
+#define BUTTON_LEFT		0x0f
+#define BUTTON_OK		0x15
+#define BUTTON_VOL_UP		0x10
+#define BUTTON_VOL_DOWN		0x16
+#define BUTTON_PRG_UP		0x1a
+#define BUTTON_PRG_DOWN		0x20
+#define BUTTON_MUTE		0x21
+#define BUTTON_1		0x05
+#define BUTTON_2		0x27
+#define BUTTON_3		0x26
+#define BUTTON_4		0x0b
+#define BUTTON_5		0x00
+#define BUTTON_6		0x01
+#define BUTTON_7		0x11
+#define BUTTON_8		0x06
+#define BUTTON_9		0x07
+#define BUTTON_SHIFT		0x17
+#define BUTTON_0		0x0c
+#define BUTTON_AV		0x0d
+#define BUTTON_MENU		0x1c
+#define BUTTON_PIP		0x1d
+#define BUTTON_A_B		0x12
+#define BUTTON_16_9		0x13
+#define BUTTON_INFO		0x22
+#define BUTTON_TV1		0x23
+#define BUTTON_TV2		0x18
+#define BUTTON_TV3		0x19
+#define BUTTON_RED		0x28
+#define BUTTON_GREEN		0x29
+#define BUTTON_YELLOW		0x1e
+#define BUTTON_BLUE		0x1f
+#define BUTTON_TV		0x24
+#define BUTTON_POWER		0x25
 
 #endif
-- 
2.39.2