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oppe-smart on Mega is SLOW

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prenticedavid
2019-02-25 15:07:51 +00:00
parent 37674a70c8
commit 3759990cdd
1 changed files with 21 additions and 0 deletions
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21
utility/mcufriend_special.h
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@@ -255,11 +255,32 @@ static __attribute((always_inline))
#define GMASK 0x20 //D4
#define HMASK 0x78 //D6, D7, D8, D9
#if defined(USE_BLD_BST_MEGA2560)
static __attribute((always_inline)) void write_8(uint8_t val)
{
asm volatile("lds __tmp_reg__,0x0102" "\n\t" //PORTH
"BST %0,0" "\n\t" "BLD __tmp_reg__,5" "\n\t"
"BST %0,1" "\n\t" "BLD __tmp_reg__,6" "\n\t"
"BST %0,6" "\n\t" "BLD __tmp_reg__,3" "\n\t"
"BST %0,7" "\n\t" "BLD __tmp_reg__,4" "\n\t"
"sts 0x0102,__tmp_reg__" : : "a" (val));
asm volatile("in __tmp_reg__,0x05" "\n\t" //PORTB
"BST %0,2" "\n\t" "BLD __tmp_reg__,4" "\n\t"
"BST %0,3" "\n\t" "BLD __tmp_reg__,5" "\n\t"
"BST %0,5" "\n\t" "BLD __tmp_reg__,7" "\n\t"
"out 0x05,__tmp_reg__" : : "a" (val));
asm volatile("in __tmp_reg__,0x14" "\n\t" //PORTG
"BST %0,4" "\n\t" "BLD __tmp_reg__,5" "\n\t"
"out 0x14,__tmp_reg__" : : "a" (val));
}
#else
#define write_8(x) { \
PORTH = (PORTH&~HMASK)|(((x)&B11000000)>>3)|(((x)&B00000011)<<5); \
PORTB = (PORTB&~BMASK)|(((x)&B00101100)<<2); \
PORTG = (PORTG&~GMASK)|(((x)&B00010000)<<1); \
}
#endif
#define read_8()(\
((PINH & B00011000) << 3) | ((PINB & BMASK) >> 2) | \
((PING & GMASK) >> 1) | ((PINH & B01100000) >> 5) )