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Player: Correctly probe the ability of the box to control HD power. This is not determined by the ROM version.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5486 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2004-12-16 22:24:57 +00:00
parent 68dd081a32
commit 78acda25b3
1 changed files with 18 additions and 6 deletions
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24
flash/bootloader/bootloader.c
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@ -122,12 +122,24 @@ void PlatformInit(void)
#endif #endif
#if defined PLATFORM_PLAYER #if defined PLATFORM_PLAYER
BRR1 = 0x19; /* 14400 Baud for monitor */ BRR1 = 0x19; /* 14400 Baud for monitor */
PACR2 &= 0xFFFC; /* GPIO for PA0 (charger detection, input by default) */ PBDRL |= 0x10; /* set PB4 to 1 to power the hd early (and prepare for
if (FW_VERSION > 451 && (PADRL & 0x01)) * probing in case the charger is connected) */
{ /* "new" Player and charger not plugged? */ PBIORL |= 0x10; /* make PB4 an output */
PBDR |= 0x0010; /* set PB4 to 1 to power-up the harddisk early */ PACR2 &= 0xFFFC; /* GPIO for PA0 (charger detection, input by default) */
PBIOR |= 0x0010; /* make PB4 an output */ if (!(PADRL & 0x01)) /* charger plugged? */
{ /* we need to probe whether the box is able to control hd power */
int i;
PBIORL &= ~0x10; /* set PB4 to input */
/* wait whether it goes low, max. ~1 ms */
for (i = 0; (PBDRL & 0x10) && i < 1000; i++);
if (~(PBDRL & 0x10)) /* pulled low -> power controllable */
PBDRL &= 0x10; /* set PB4 low */
else /* still floating high -> not controllable */
PBDRL |= 0x10; /* set PB4 high */
PBIORL |= 0x10; /* ..and output again */
} }
#elif defined PLATFORM_RECORDER #elif defined PLATFORM_RECORDER
BRR1 = 0x02; /* 115200 Baud for monitor */ BRR1 = 0x02; /* 115200 Baud for monitor */