Здpавствуй, All!
.............. wait10ms: rcall wait5ms ;5ms 7+x return addresses ;proceed with wait5ms ;+5ms wait5ms: rcall wait1ms ;1ms 6+x return addresses ;proceed with wait4ms ;+4ms wait4ms: rcall wait1ms ;1ms 6+x return addresses ;proceed with wait3ms ;+3ms wait3ms: rcall wait1ms ;1ms 6+x return addresses ;proceed with wait2ms ;+2ms wait2ms: rcall wait1ms ;1ms 6+x return addresses ;proceed with wait1ms ;+1ms wait1ms: rcall wait500us ;500╡s 5+x return addresses ;laeuft in wait500us ;+500╡s wait500us: rcall wait100us ;100╡s 4+x return addresses ;proceed with wait400us ;+400╡s wait400us: rcall wait100us ;100╡s 4+x return addresses ;proceed with wait300us ;+300╡s wait300us: rcall wait100us ;100╡s 4+x return addresses ;proceed with wait200us ;+200╡s wait200us: rcall wait100us ;100╡s 4+x return addresses ;proceed with wait100us ;+100╡s wait100us: rcall wait50us ;50╡s 3+x return addresses ;proceed with wait50us ;+50╡s wait50us: rcall wait10us ;10╡s 2+x return addresses ;proceed with wait40us ;+40╡s wait40us: rcall wait10us ;10╡s 2+x return addresses ;proceed with wait30us ;+30╡s wait30us: rcall wait10us ;10╡s 2+x return addresses ;proceed with wait20us ;+20╡s wait20us: rcall wait10us ;10╡s 2+x return addresses ;proceed with wait10us ;+10╡s /* 10╡s and below based on MCU clock rate * - rcall needs 3 clock cycles * - ret needs 4 clock cycles
*/ wait10us: ; 1+x return addresses
#if CPU_FREQ == 8000000 ;8MHz: clock cycle 125ns x = 2
.global wait5us ;wait 5╡s .global wait4us ;wait 4╡s .global wait3us ;wait 3╡s .global wait2us ;wait 2╡s .global wait1us ;wait 1╡s
;wait10us rcall wait5us ;5╡s ;proceed with wait5us ;+5╡s wait5us: rcall wait1us ;1╡s ;proceed with wait4us ;+4╡s wait4us: rcall wait1us ;1╡s ;proceed with wait3us ;+3us wait3us: rcall wait1us ;1╡s ;proceed with wait2us ;+2╡s wait2us: rcall wait1us ;1╡s ;proceed with wait1us ;+1╡s wait1us: nop ;1╡s #endif
ret
Это транслируется в:
0000784e <wait10ms>: ;proceed with wait10ms ;+10ms wait10ms: rcall wait5ms ;5ms 7+x return addresses 784e: 00 d0 rcall .+0 ; 0x7850 <wait5ms>
00007850 <wait5ms>: ;proceed with wait5ms ;+5ms wait5ms: rcall wait1ms ;1ms 6+x return addresses 7850: 03 d0 rcall .+6 ; 0x7858 <wait1ms>
00007852 <wait4ms>: ;proceed with wait4ms ;+4ms wait4ms: rcall wait1ms ;1ms 6+x return addresses 7852: 02 d0 rcall .+4 ; 0x7858 <wait1ms>
00007854 <wait3ms>: ;proceed with wait3ms ;+3ms wait3ms: rcall wait1ms ;1ms 6+x return addresses 7854: 01 d0 rcall .+2 ; 0x7858 <wait1ms>
00007856 <wait2ms>: ;proceed with wait2ms ;+2ms wait2ms: rcall wait1ms ;1ms 6+x return addresses 7856: 00 d0 rcall .+0 ; 0x7858 <wait1ms>
00007858 <wait1ms>: ;proceed with wait1ms ;+1ms wait1ms: rcall wait500us ;500╡s 5+x return addresses 7858: 00 d0 rcall .+0 ; 0x785a <wait500us>
0000785a <wait500us>: ;laeuft in wait500us ;+500╡s wait500us: rcall wait100us ;100╡s 4+x return addresses 785a: 03 d0 rcall .+6 ; 0x7862 <wait100us>
0000785c <wait400us>: ;proceed with wait400us ;+400╡s wait400us: rcall wait100us ;100╡s 4+x return addresses 785c: 02 d0 rcall .+4 ; 0x7862 <wait100us>
0000785e <wait300us>: ;proceed with wait300us ;+300╡s wait300us: rcall wait100us ;100╡s 4+x return addresses 785e: 01 d0 rcall .+2 ; 0x7862 <wait100us>
00007860 <wait200us>: ;proceed with wait200us ;+200╡s wait200us: rcall wait100us ;100╡s 4+x return addresses 7860: 00 d0 rcall .+0 ; 0x7862 <wait100us>
00007862 <wait100us>: ;proceed with wait100us ;+100╡s wait100us: rcall wait50us ;50╡s 3+x return addresses 7862: 00 d0 rcall .+0 ; 0x7864 <wait50us>
00007864 <wait50us>: ;proceed with wait50us ;+50╡s wait50us: rcall wait10us ;10╡s 2+x return addresses 7864: 03 d0 rcall .+6 ; 0x786c <wait10us>
00007866 <wait40us>: ;proceed with wait40us ;+40╡s wait40us: rcall wait10us ;10╡s 2+x return addresses 7866: 02 d0 rcall .+4 ; 0x786c <wait10us>
00007868 <wait30us>: ;proceed with wait30us ;+30╡s wait30us: rcall wait10us ;10╡s 2+x return addresses 7868: 01 d0 rcall .+2 ; 0x786c <wait10us>
0000786a <wait20us>: ;proceed with wait20us ;+20╡s wait20us: rcall wait10us ;10╡s 2+x return addresses 786a: 00 d0 rcall .+0 ; 0x786c <wait10us>
0000786c <wait10us>: .global wait3us ;wait 3╡s .global wait2us ;wait 2╡s .global wait1us ;wait 1╡s
;wait10us rcall wait5us ;5╡s 786c: 00 d0 rcall .+0 ; 0x786e <wait5us>
0000786e <wait5us>: ;proceed with wait5us ;+5╡s wait5us: rcall wait1us ;1╡s 786e: 03 d0 rcall .+6 ; 0x7876 <wait1us>
00007870 <wait4us>: ;proceed with wait4us ;+4╡s wait4us: rcall wait1us ;1╡s 7870: 02 d0 rcall .+4 ; 0x7876 <wait1us>
00007872 <wait3us>: ;proceed with wait3us ;+3us wait3us: rcall wait1us ;1╡s 7872: 01 d0 rcall .+2 ; 0x7876 <wait1us>
00007874 <wait2us>: ;proceed with wait2us ;+2╡s wait2us: rcall wait1us ;1╡s 7874: 00 d0 rcall .+0 ; 0x7876 <wait1us>
00007876 <wait1us>: ;proceed with wait1us ;+1╡s wait1us: nop ;1╡s 7876: 00 00 nop nop nop ;500ns #endif
ret 7878: 08 95 ret ...............
С уважением - Andrej