Mercurial > public > hwos_code
view src/wait.asm @ 228:b17acfa2e5d9
1.74 release
author | heinrichsweikamp |
---|---|
date | Thu, 05 Feb 2015 14:51:24 +0100 |
parents | 11d4fc797f74 |
children | 653a3ab08062 |
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;============================================================================= ; ; File wait.asm ; ; Wait routines ; ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. ;============================================================================= ; HISTORY ; 2004-01-31 : [chsw] Initial version. ; 2007-05-11 : Updated (OSTC code). ; 2011-10-18 : [mH] Timings tested with oscilloscope #include "ostc3.inc" basic CODE ; ========================================================== ; WAIT 1 MILLISECOND (Not exact: 1,008ms +/- 30,5µs + worst case ISR latency) ; ========================================================== global WAITMSX WAITMSX movwf waitms_temp WAITMSX2 setf TMR5H movlw .255-.32 ;32 x 31,5µs = 1,008ms movwf TMR5L bcf PIR5,TMR5IF ; Clear flag WAITMSX3 btfss PIR5,TMR5IF bra WAITMSX3 ; Wait loop decfsz waitms_temp,F bra WAITMSX2 return ;============================================================================= END