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MFp4:

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Make getc(0) polling (this has the happy side effect of saving
	8 bytes in the generated code).
This commit is contained in:
Warner Losh 2006-04-21 13:58:51 +00:00
parent 69f5220b21
commit 7ea1357336
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=157940
1 changed files with 2 additions and 2 deletions
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4
sys/boot/arm/at91/libat91/getc.c
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@ -53,10 +53,10 @@ getc(int seconds)
thisSecond = GetSeconds(); thisSecond = GetSeconds();
seconds = thisSecond + seconds; seconds = thisSecond + seconds;
while (thisSecond <= seconds) { do {
if ((pUSART->US_CSR & AT91C_US_RXRDY)) if ((pUSART->US_CSR & AT91C_US_RXRDY))
return (pUSART->US_RHR & 0xFF); return (pUSART->US_RHR & 0xFF);
thisSecond = GetSeconds(); thisSecond = GetSeconds();
} } while (thisSecond < seconds);
return (-1); return (-1);
} }