diff options
author | Björn Stenberg <bjorn@haxx.se> | 2002-05-17 19:23:04 +0000 |
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committer | Björn Stenberg <bjorn@haxx.se> | 2002-05-17 19:23:04 +0000 |
commit | 833556c2e7683aec583d5558fee400b1c6554623 (patch) | |
tree | 8fc0869b06711ce7d4e3ea28e70435e381a14c5c /firmware/drivers | |
parent | af1e5e6926ac5378f7e7f19a12441b0a63238f09 (diff) | |
download | rockbox-833556c2e7683aec583d5558fee400b1c6554623.tar.gz rockbox-833556c2e7683aec583d5558fee400b1c6554623.zip |
Doh! Button signals are active low
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@624 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers')
-rw-r--r-- | firmware/drivers/button.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c index 9e00efc0ec..3e35e0eea4 100644 --- a/firmware/drivers/button.c +++ b/firmware/drivers/button.c | |||
@@ -170,17 +170,18 @@ int button_get(void) | |||
170 | int portc = PCDR; | 170 | int portc = PCDR; |
171 | int btn = 0; | 171 | int btn = 0; |
172 | 172 | ||
173 | if ( portc & 1 ) | 173 | /* buttons are active low */ |
174 | if ( !(portc & 1) ) | ||
174 | btn |= BUTTON_LEFT; | 175 | btn |= BUTTON_LEFT; |
175 | if ( portc & 2 ) | 176 | if ( !(portc & 2) ) |
176 | btn |= BUTTON_MENU; | 177 | btn |= BUTTON_MENU; |
177 | if ( portc & 4 ) | 178 | if ( !(portc & 4) ) |
178 | btn |= BUTTON_RIGHT; | 179 | btn |= BUTTON_RIGHT; |
179 | if ( portc & 8 ) | 180 | if ( !(portc & 8) ) |
180 | btn |= BUTTON_PLAY | BUTTON_UP; | 181 | btn |= BUTTON_PLAY | BUTTON_UP; |
181 | if ( porta & 0x20 ) | 182 | if ( !(porta & 0x20) ) |
182 | btn |= BUTTON_ON; | 183 | btn |= BUTTON_ON; |
183 | if ( porta & 0x800 ) | 184 | if ( !(porta & 0x800) ) |
184 | btn |= BUTTON_STOP | BUTTON_DOWN; | 185 | btn |= BUTTON_STOP | BUTTON_DOWN; |
185 | 186 | ||
186 | return btn; | 187 | return btn; |