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avr: fixed wait phase in 1-wire-master code.

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Martin Preuss
2024-09-18 00:14:08 +02:00
parent 3bec999ae0
commit 0e83988904
1 changed files with 7 additions and 3 deletions
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10
avr/modules/owimaster/main.asm
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@@ -40,9 +40,13 @@ OwiMaster_Init:
OwiMaster_Reset: OwiMaster_Reset:
; send RESET pulse (min. 480usec) ; send RESET pulse (min. 480usec)
sbi OWI_DDR, OWI_PINNUM ; set to output sbi OWI_DDR, OWI_PINNUM ; set to output
cbi OWI_PORTOUT, OWI_PINNUM ; set value to zero cbi OWI_PORTOUT, OWI_PINNUM ; set value to zero
Utils_WaitNanoSecs 500000, 0, r22 rcall Utils_WaitFor100MicroSecs ; wait for about 500 usecs
rcall Utils_WaitFor100MicroSecs
rcall Utils_WaitFor100MicroSecs
rcall Utils_WaitFor100MicroSecs
rcall Utils_WaitFor100MicroSecs
cbi OWI_DDR, OWI_PINNUM ; set to input cbi OWI_DDR, OWI_PINNUM ; set to input
; if present slave pulls line low for 60 usecs (we check after 30 usecs) ; if present slave pulls line low for 60 usecs (we check after 30 usecs)