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author | Linus Nielsen Feltzing <linus@haxx.se> | 2004-07-22 09:09:26 +0000 |
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committer | Linus Nielsen Feltzing <linus@haxx.se> | 2004-07-22 09:09:26 +0000 |
commit | 6c7011415b91e23d4740b8df8fba84d450c55a6d (patch) | |
tree | d46f84f11ab38d4b1c18e82efd2c3874d3895e3a /firmware/backlight.c | |
parent | e4fc3d471c96478a0f47e880363a25ad4b5929dd (diff) | |
download | rockbox-6c7011415b91e23d4740b8df8fba84d450c55a6d.tar.gz rockbox-6c7011415b91e23d4740b8df8fba84d450c55a6d.zip |
It turns out that the backlight port pin on the player can be set to an input (and pulled up externally) to shut off the backlight. That may save us a few picoamps :-)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4918 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/backlight.c')
-rw-r--r-- | firmware/backlight.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/firmware/backlight.c b/firmware/backlight.c index edf8ff3744..f43c8a06fc 100644 --- a/firmware/backlight.c +++ b/firmware/backlight.c | |||
@@ -74,7 +74,7 @@ void backlight_thread(void) | |||
74 | /* Disable square wave */ | 74 | /* Disable square wave */ |
75 | rtc_write(0x0a, rtc_read(0x0a) & ~0x40); | 75 | rtc_write(0x0a, rtc_read(0x0a) & ~0x40); |
76 | #else | 76 | #else |
77 | or_b(0x40, &PADRH); | 77 | and_b(~0x40, &PAIORH); |
78 | #endif | 78 | #endif |
79 | } | 79 | } |
80 | /* else if(backlight_timer) */ | 80 | /* else if(backlight_timer) */ |
@@ -85,6 +85,7 @@ void backlight_thread(void) | |||
85 | rtc_write(0x0a, rtc_read(0x0a) | 0x40); | 85 | rtc_write(0x0a, rtc_read(0x0a) | 0x40); |
86 | #else | 86 | #else |
87 | and_b(~0x40, &PADRH); | 87 | and_b(~0x40, &PADRH); |
88 | or_b(0x40, &PAIORH); | ||
88 | #endif | 89 | #endif |
89 | } | 90 | } |
90 | break; | 91 | break; |
@@ -94,7 +95,7 @@ void backlight_thread(void) | |||
94 | /* Disable square wave */ | 95 | /* Disable square wave */ |
95 | rtc_write(0x0a, rtc_read(0x0a) & ~0x40); | 96 | rtc_write(0x0a, rtc_read(0x0a) & ~0x40); |
96 | #else | 97 | #else |
97 | or_b(0x40, &PADRH); | 98 | and_b(~0x40, &PAIORH); |
98 | #endif | 99 | #endif |
99 | break; | 100 | break; |
100 | 101 | ||
@@ -172,10 +173,5 @@ void backlight_init(void) | |||
172 | create_thread(backlight_thread, backlight_stack, | 173 | create_thread(backlight_thread, backlight_stack, |
173 | sizeof(backlight_stack), backlight_thread_name); | 174 | sizeof(backlight_stack), backlight_thread_name); |
174 | 175 | ||
175 | #ifndef HAVE_RTC | ||
176 | |||
177 | or_b(0x40, &PAIORH); /* Set data direction of PA14 */ | ||
178 | #endif | ||
179 | |||
180 | backlight_on(); | 176 | backlight_on(); |
181 | } | 177 | } |