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rp/spi: disable+enable when setting frequency

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This commit is contained in:
Dario Nieuwenhuis 2021-07-20 09:43:06 +02:00
parent dbff5cc232
commit da33b3a4d2
1 changed files with 7 additions and 0 deletions
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7
embassy-rp/src/spi.rs
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@ -142,10 +142,17 @@ impl<'d, T: Instance> Spi<'d, T> {
let (presc, postdiv) = calc_prescs(freq); let (presc, postdiv) = calc_prescs(freq);
let p = self.inner.regs(); let p = self.inner.regs();
unsafe { unsafe {
// disable
p.cr1().write(|w| w.set_sse(false));
// change stuff
p.cpsr().write(|w| w.set_cpsdvsr(presc)); p.cpsr().write(|w| w.set_cpsdvsr(presc));
p.cr0().modify(|w| { p.cr0().modify(|w| {
w.set_scr(postdiv); w.set_scr(postdiv);
}); });
// enable
p.cr1().write(|w| w.set_sse(true));
} }
} }
} }