Cleanup and let gcc optimise the cases where row == 0 and row != 0

diff --git a/ROM2/keypad.c b/ROM2/keypad.c
index 6c04754..5bd5e2e 100644 (file)
--- a/ROM2/keypad.c
+++ b/ROM2/keypad.c
@@ -8,8 +8,6 @@ volatile bool new_key;
 
 /* first 8 from the first row, then 3 from the second row */
 /* keys are 1-9, 0, reset */
-//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};
 const u8 keymap0[8] = {KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8};
 const u8 keymap1[3] = {KEY_9, KEY_0, KEY_RESET};
 
@@ -18,7 +16,7 @@ const u8 keymap1[3] = {KEY_9, KEY_0, KEY_RESET};
 /* reads the keypad and returns the bit number that was turned on in the shift
  * register (from 0..7). If no bits were turned on, it returns 8 (aka NO_KEY)
  */
-extern inline u8 keypad_read_row(u8 row) {
+extern inline u8 keypad_read_row(const u8 row) {
        u8 i, num;
 
        if (row)