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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-02-28 18:50:44 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-02-28 18:50:44 +0000 |
commit | d24dad139fc6732f277a07158aca093acf874db2 (patch) | |
tree | 19004dd607c872a7cdde99c63e630293eb6c24b3 /nuttx/arch/z80/src/ez80/ez80_timerisr.c | |
parent | 5a7efee60f2d6a02cae752e1ac777d5a23b3e5da (diff) | |
download | px4-nuttx-d24dad139fc6732f277a07158aca093acf874db2.tar.gz px4-nuttx-d24dad139fc6732f277a07158aca093acf874db2.tar.bz2 px4-nuttx-d24dad139fc6732f277a07158aca093acf874db2.zip |
Fix more overflow/truncation problems in timer setups
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1537 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/z80/src/ez80/ez80_timerisr.c')
-rw-r--r-- | nuttx/arch/z80/src/ez80/ez80_timerisr.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/nuttx/arch/z80/src/ez80/ez80_timerisr.c b/nuttx/arch/z80/src/ez80/ez80_timerisr.c index 60e46322b..65e728f48 100644 --- a/nuttx/arch/z80/src/ez80/ez80_timerisr.c +++ b/nuttx/arch/z80/src/ez80/ez80_timerisr.c @@ -1,7 +1,7 @@ /*************************************************************************** * arch/z80/src/ez80/ez80_timerisr.c * - * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <spudmonkey@racsa.co.cr> * * Redistribution and use in source and binary forms, with or without @@ -53,11 +53,6 @@ * Definitions ***************************************************************************/ -/* The system clock frequency is defined in the linkcmd file */ - -extern unsigned long SYS_CLK_FREQ; -#define _DEFCLK ((unsigned long)&SYS_CLK_FREQ) - /*************************************************************************** * Private Types ***************************************************************************/ @@ -143,9 +138,11 @@ void up_timerinit(void) * * For a system timer of 50,000,000 that would result in a reload value of * 31,250 + * + * NOTE: The system clock frequency value is defined in the board.h file */ - reload = (uint16)(_DEFCLK / 1600); + reload = (uint16)(ez80_systemclock / 1600); outp(EZ80_TMR0_RRH, (ubyte)(reload >> 8)); outp(EZ80_TMR0_RRL, (ubyte)(reload)); |