PAL-Driver Problem with groupmode
Posted: Sat Dec 31, 2011 2:58 am
Dear Giovanni,
i seems i found a little problem here:
I tried to use the Group - Mode of GPIO with GPIOV2. I need to Group the Bits 8 - 15 of GPIOE.
I interpret the following define as information how to use the members "mask" and "offset".
this define is feeded with the call of palWriteBus (&LCD_Bus, 0x5A);
The idea was to shift the Bits 0-7 to the bits 8 - 15. (if using the BusIO descriptor LCD_Bus i got what i need!)
Problem:
Whithin initialization the BusIO - Member "offset" is not evaluated. if i use a BusIO
The function pal_lld_writegroup writes to the correct bits 8 - 15 but the Init do the wrong IO's (0 -7).
A current workaround is to use different descriptors for init and for manipulating output:
i think the best way was to evaluate the member "offset" also in _pal_lld_setgroupmode() while initialization. I use the trunk 2.3.6
What do you think about it ?
i seems i found a little problem here:
I tried to use the Group - Mode of GPIO with GPIOV2. I need to Group the Bits 8 - 15 of GPIOE.
I interpret the following define as information how to use the members "mask" and "offset".
Code: Select all
#define pal_lld_writegroup(port, mask, offset, bits) \
((port)->BSRR.W = ((~(bits) & (mask)) << (16 + (offset))) | (((bits) & (mask)) << (offset)))
this define is feeded with the call of palWriteBus (&LCD_Bus, 0x5A);
The idea was to shift the Bits 0-7 to the bits 8 - 15. (if using the BusIO descriptor LCD_Bus i got what i need!)
Problem:
Whithin initialization the BusIO - Member "offset" is not evaluated. if i use a BusIO
Code: Select all
{
GPIOE,
0xFF,
8
} The function pal_lld_writegroup writes to the correct bits 8 - 15 but the Init do the wrong IO's (0 -7).
A current workaround is to use different descriptors for init and for manipulating output:
Code: Select all
static BusIO LCD_Bus;
static BusIO LCDInit_Bus;
LCD_Bus.portid = GPIOE;
LCD_Bus.mask = 0xFF;
LCD_Bus.offset = 8;
LCDInit_Bus.portid = GPIOE;
LCDInit_Bus.mask = 0xFF00;
LCDInit_Bus.offset = 0 /* don't care */ ;
i think the best way was to evaluate the member "offset" also in _pal_lld_setgroupmode() while initialization. I use the trunk 2.3.6
What do you think about it ?