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MFp4:

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o Disable all interrupts that the ST can generate until we have an ISR
  to service them.
o Correct clock calculation to make DELAY the right length...

Submitted by: cognet (#2)
This commit is contained in:
Warner Losh 2006-03-18 01:30:31 +00:00
parent 244bb595f4
commit 5bcedfaa73
1 changed files with 3 additions and 2 deletions
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5
sys/arm/at91/at91_st.c
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@ -102,7 +102,8 @@ at91st_attach(device_t dev)
* initializing clocks so that DELAY works.
*/
WR4(ST_RTMR, 1);
/* Disable all interrupts */
WR4(ST_IDR, 0xffffffff);
return (0);
}
@ -175,7 +176,7 @@ DELAY(int n)
uint32_t start, end, cur;
start = st_crtr();
n = (n * 1000000) / 32768;
n = (n * 1000) / 32768;
if (n <= 0)
n = 1;
end = (start + n) & ST_CRTR_MASK;