1 // Copyright (c) 2015, Tobias Mueller tm(at)tm3d.de
2 // All rights reserved.
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5 // modification, are permitted provided that the following conditions are
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34 .global TIMER_INTERRUPT
37 in r_temp,_SFR_IO_ADDR(SREG)
39 sbic OW_PIN,OW_PINN ; abkuerzung wenn Leitung schon h
40 rjmp tint_end ; Leitung 1 kein Reset
45 sbis OW_PIN,OW_PINN ;warten bis leitung wieder h
47 JMP_NO_TOV ;ueberspringe wenn kein ueberlauf
49 in r_temp,TCNT_REG ;schauen ob es lange genug gedauert hat fuer reset
55 ;zwischen Reset und Presets
58 cpi r_temp,OWT_RESET_PRESENT
59 brlo tint_loop_res_pres ;Warten zwischen reset und presets
60 sbi OW_DDR,OW_PINN ;presents impuls
64 cpi r_temp,OWT_PRESENT
67 ldi r_temp,OW_READ_ROM_COMMAND ; Initialisieren von Rom command
70 sts reset_indicator,r_temp
71 sts bcount,r_temp ;bit eins
73 sts sendflag,r_temp ;empfangen (rom_command)
74 ;sts wzero,r_temp ;alles 0
81 out _SFR_IO_ADDR(SREG),r_temp