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Jarno Lehtinen 2018-12-19 14:12:16 +02:00 committed by GitHub
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@ -3,16 +3,22 @@
``` ```
``` ```
cli // 1 clock
PORTB = *ptr; // is this atomic? probably, because ptr is 6-bit pointer. PORTB = *ptr; // is this atomic? probably, because ptr is 6-bit pointer.
f98: e0 91 26 01 lds r30, 0x0126 ; 0x800126 <__data_end> // 2 clocks f98: e0 91 26 01 lds r30, 0x0126 ; 0x800126 <__data_end> // 2 clocks
f9c: f0 91 27 01 lds r31, 0x0127 ; 0x800127 <__data_end+0x1> // 2 clocks f9c: f0 91 27 01 lds r31, 0x0127 ; 0x800127 <__data_end+0x1> // 2 clocks
fa0: 80 81 ld r24, Z // 1 clock fa0: 80 81 ld r24, Z // 1 clock
fa2: 85 b9 out 0x05, r24 ; 5 // 1 clock fa2: 85 b9 out 0x05, r24 ; 5 // 1 clock
sei // 1 clock
``` ```
500ns
``` ```
cli
mov r31, r1 mov r31, r1
mov r30, gpior2 mov r30, gpior2
ld r24, Z ld r24, Z
out 0x05, r24 out 0x05, r24
sei
``` ```
375ns