From 5574108832c9f2ef4aef35f0f7531f8d072c68a7 Mon Sep 17 00:00:00 2001
From: Bernard Blackham <dagobah@ucc.asn.au>
Date: Wed, 6 Aug 2003 16:16:30 +0000
Subject: [PATCH] Gratuitious use of #defines

---
 ROM2/keypad.c | 16 +++++++++++-----
 ROM2/keypad.h | 13 +++++++++++++
 2 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/ROM2/keypad.c b/ROM2/keypad.c
index b36b326..433e78c 100644
--- a/ROM2/keypad.c
+++ b/ROM2/keypad.c
@@ -7,11 +7,11 @@ bool new_key = 0;
 
 /* first 8 from the first row, then 3 from the second row */
 /* keys are 1-9, 0, reset */
-const u8 keymap0[8] = {8, 7, 6, 5, 4, 3, 2, 1};
-const u8 keymap1[3] = {11, 10, 9};
+const u8 keymap0[8] = {KEY_8, KEY_7, KEY_6, KEY_5, KEY_4, KEY_3, KEY_2, KEY_1};
+const u8 keymap1[3] = {KEY_RESET, KEY_0, KEY_9};
 
-extern inline int keypad_read_row(int row) {
-	int i, num;
+extern inline u8 keypad_read_row(u8 row) {
+	u8 i, num;
 	if (row)
 		_io_ports[M6811_PORTD] |= PORTD_KEYPAD_ROW;
 	else
@@ -32,7 +32,7 @@ extern inline int keypad_read_row(int row) {
 /* returns a key 1..10 or 11 for reset */
 void keypad_read() {
 	/* FIXME: need to do debouncing of some sort? */
-	int key;
+	u8 key;
 	key = keypad_read_row(0);
 	if (!key) {
 		key = keypad_read_row(1);
@@ -54,3 +54,9 @@ bool keypad_pressed() {
 	new_key = 0;
 	return 1;
 }
+
+u8 keypad_getkey() {
+	while (!keypad_pressed())
+		keypad_read();
+	return last_key;
+}
diff --git a/ROM2/keypad.h b/ROM2/keypad.h
index b9cee95..1928aa8 100644
--- a/ROM2/keypad.h
+++ b/ROM2/keypad.h
@@ -1,10 +1,23 @@
 #ifndef _KEYPAD_H_
 #define _KEYPAD_H_
 
+#define KEY_1     1
+#define KEY_2     2
+#define KEY_3     3
+#define KEY_4     4
+#define KEY_5     5
+#define KEY_6     6
+#define KEY_7     7
+#define KEY_8     8
+#define KEY_9     9
+#define KEY_0     10
+#define KEY_RESET 11
+
 extern u8 last_key;
 
 /* returns true if a key has been pressed since the last call */
 bool keypad_pressed();
 void keypad_read();
+u8   keypad_getkey();
 
 #endif /* _KEYPAD_H_ */
-- 
2.20.1