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Adjustments for player bootloader: (1) Correct HD power pin polarity. (2) Only power on HD if not started by charger insertion. (3) Changed button read to use port C instead of ADC. This allows for 3 buttons as on the other platforms.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5442 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2004-11-19 23:49:21 +00:00
parent 0044a04c22
commit b8b94f171a
2 changed files with 32 additions and 13 deletions
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21
flash/bootloader/bootloader.c
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@ -122,9 +122,10 @@ void PlatformInit(void)
#if defined PLATFORM_PLAYER
BRR1 = 0x0019; // 14400 Baud for monitor
if (FW_VERSION > 451) // "new" Player?
{
PBDR &= ~0x10; // set PB4 to 0 to power-up the harddisk early
PACR2 &= 0xFFFC; // GPIO for PA0 (charger detection, input by default)
if (FW_VERSION > 451 && (PADRL & 0x01))
{ // "new" Player and charger not plugged?
PBDR |= 0x10; // set PB4 to 1 to power-up the harddisk early
PBIOR |= 0x10; // make PB4 an output
}
#elif defined PLATFORM_RECORDER
@ -255,7 +256,7 @@ void DecompressStart(tImage* pImage)
pImage->pExecute();
}
#ifdef USE_ADC
int ReadADC(int channel)
{
// after channel 3, the ports wrap and get re-used
@ -267,12 +268,14 @@ int ReadADC(int channel)
return (timeout == 0) ? -1 : *pResult>>6;
}
#endif
// This function is platform-dependent,
// until I figure out how to distinguish at runtime.
int ButtonPressed(void) // return 1,2,3 for F1,F2,F3, 0 if none pressed
{
#ifdef USE_ADC
int value = ReadADC(CHANNEL);
if (value >= F1_LOWER && value <= F1_UPPER) // in range
@ -281,6 +284,16 @@ int ButtonPressed(void) // return 1,2,3 for F1,F2,F3, 0 if none pressed
return 2;
else if (value >= F3_LOWER && value <= F3_UPPER) // in range
return 3;
#else
int value = PCDR;
if (!(value & F1_MASK))
return 1;
else if (!(value & F2_MASK))
return 2;
else if (!(value & F3_MASK))
return 3;
#endif
return 0;
}