On 07-Jun-2000 [EMAIL PROTECTED] wrote:
> From Palm docs, the Palm Pro, III, ... connect the GP2 pin to the
> Dragonball UART GPIO pin (pin 32) whereas the IIIc with the DragonballEZ
> connects the GP2 pin to CSA1 (pin 56).
Page 7-18 of the MC68328 manual shows the Port M bits (GPIO is bit 7). Page
7-12 of the MC68EZ328 manual shows the Port F bits (CSA1 is bit 7).
#define SET_BIT(x,b) x|=b
#define CLEAR_BIT(x,b) x&=~b
#define READ_BIT(x,b) (x&b)
#define GPIO_LINE 0x80
#define EZ_CPA1_LINE 0x80
/* from the memory map */
Byte *PMDATA = (Byte *) 0xFFFFF449;
Byte *PFDATA = (Byte *) 0xFFFFF429;
/* for non-EZ */
if (READ_BIT(*PMDATA, GPIO_LINE)) {
/* GPIO is on */
}
/* for EZ */
if (READ_BIT(*PFDATA, EZ_CPA1_LINE)) {
/* CPA1 is on */
}
I think the above is correct. Haven't tried it. Not sure if the direction
needs to be set to read CPIO or CPA1, probably not.
> Speaking of which, does anyone know a solid way to determine if the
> processor is a Dragonball or Dragonball EZ? At worst I will have the user
> enter the hardware type, but if this can be avoided, great.
Here's what I use. Probably expensive so store the result in a global rather
than calling it each time.
#ifndef sysFtrNumProcessorID
#define sysFtrNumProcessorID 2
#endif
#ifndef sysFtrNumProcessorMask
#define sysFtrNumProcessorMask 0xFFFF0000
#endif
#ifndef sysFtrNumProcessor328
#define sysFtrNumProcessor328 0x00010000
#endif
#ifndef sysFtrNumProcessorEZ
#define sysFtrNumProcessorEZ 0x00020000
#endif
static Word Which_Processor(void)
{
DWord id, chip;
Word which;
/* Determine which processor */
if (!FtrGet(sysFtrCreator, sysFtrNumProcessorID, &id)) {
chip = id & sysFtrNumProcessorMask;
if (chip==sysFtrNumProcessor328) which = 0;
else if (chip==sysFtrNumProcessorEZ) which = 1;
else which = 0;
} else which = 0; /* feature is only in >= OS3.1 so it must be earlier */
return which;
}
/* Chris Faherty <[EMAIL PROTECTED]> */
/* Your Stock has crashed - you must now restart your system */
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
