On 08/19/13 10:07 PM, Eugeniy Meshcheryakov wrote:
19 серпня 2013 о 20:40 +0200 Karel Gardas написав(-ла):
On 08/14/13 11:49 PM, Eugeniy Meshcheryakov wrote:
Hi,
14 серпня 2013 о 16:54 +0200 Karel Gardas написав(-ла):
What makes me more nervous about supporting older chips is addition:
rcc&= SYSCONRCC_MOSCDIS;
syscon->rcc = rcc;
Ugh, wait, you are clearing all bits but SYSCONRCC_MOSCDIS in RCC? That
could not be right. Did you mean to do
rcc&= ~SYSCONRCC_MOSCDIS;
??
No, I mean exactly what's there. What's the problem with disabling
main oscillator here? i.e. to disable main oscillator you need to
set MOSCDIS.
You cannot set MOSCDIS by using&= , you need |=. By using&= you are
clearing all bits but MOSCDIS, including reserved bits and previously
set SYSCONRCC_BYPASS. MOSCDIS is _not_ changed by this, but it is set
after reset on both MCUs.
Err, indeed, good catch! With rcc |= SYSCONRCC_MOSCDIS; everything's
running fine here...
Karel
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