Hi,
I found a message regarding this issue:
In file included from StdDefs.c:8:0:
/usr/lib/gcc/avr/4.5.3/../../../avr/include/util/delay.h: In function
‘msleep’:
/usr/lib/gcc/avr/4.5.3/../../../avr/include/util/delay.h:153:43: error:
__builtin_avr_delay_cycles expects an integer constant.
make: *** [StdDefs.o] Error 1
but I did not found any solution.
So please have a look at the provided patch. Since I don't know much
about the internals of simulavr I'm not sure if this fix is correct. But
at least it's a compiling and working (IMHO) solution for possibly
broken avr-libc.
Best Regards,
- Foka
>From 7b565d6a6c149f9aa66326fc7ccc0f93b4f0f05e Mon Sep 17 00:00:00 2001
From: foka <fokamo...@gmail.com>
Date: Sun, 18 Mar 2012 22:42:58 +0100
Subject: [PATCH] Possible compile fix for avr-gcc 4.5.3.
This fix however may introduce an old bug where optimizations != 0 led
to broken msleep(...).
It seems even a #define __DELAY_BACKWARD_COMPATIBLE__ doesn't help
here.
---
examples/atmel_key/StdDefs.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/examples/atmel_key/StdDefs.c b/examples/atmel_key/StdDefs.c
index 8735b52..f5eb606 100644
--- a/examples/atmel_key/StdDefs.c
+++ b/examples/atmel_key/StdDefs.c
@@ -61,7 +61,12 @@ void msleep(INT16U ms)
INT16S i,j;
for (i = 1; i < ms; i++)
for (j = 1; j < ONETENTH_MS; j++); / * to give 1/10 ms*/
- _delay_ms(ms); // Changed K. Schwichtenberg
+ //_delay_ms(ms); // Changed K. Schwichtenberg
+
+ // Well, Kays fix seems not to work with avr-gcc (GCC) 4.5.3 on
+ // ubuntu 11.10 (at least)
+ for (;ms; --ms)
+ _delay_ms(1);
}
//------------------------------------------------------------
--
1.7.5.4
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