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Merge pull request #399 from jannic/issue_390

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Fix handling of duty cycle while PWM channels is disabled
This commit is contained in:
Jan Niehusmann 2022-07-26 15:09:16 +02:00 committed by GitHub
parent 32411b8652 c0c72c4db3
commit 96552b28c5
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 37 additions and 9 deletions
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46
rp2040-hal/src/pwm/mod.rs
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@ -572,6 +572,7 @@ pub struct Channel<S: SliceId, M: SliceMode, C: ChannelId> {
slice_mode: PhantomData<M>,
channel_id: PhantomData<C>,
duty_cycle: u16,
enabled: bool,
}
impl<S: SliceId, M: SliceMode, C: ChannelId> Channel<S, M, C> {
@ -580,7 +581,8 @@ impl<S: SliceId, M: SliceMode, C: ChannelId> Channel<S, M, C> {
regs: Registers::new(),
slice_mode: PhantomData,
channel_id: PhantomData,
duty_cycle,
duty_cycle, // stores the duty cycle while the channel is disabled
enabled: true,
}
}
}
@ -593,16 +595,26 @@ impl<S: SliceId, M: SliceMode> PwmPin for Channel<S, M, A> {
/// We cant disable the channel without disturbing the other channel.
/// So this just sets the duty cycle to zero
fn disable(&mut self) {
self.duty_cycle = self.regs.read_cc_a();
if self.enabled {
self.duty_cycle = self.regs.read_cc_a();
}
self.enabled = false;
self.regs.write_cc_a(0)
}
fn enable(&mut self) {
self.regs.write_cc_a(self.duty_cycle)
if !self.enabled {
self.enabled = true;
self.regs.write_cc_a(self.duty_cycle)
}
}
fn get_duty(&self) -> Self::Duty {
self.regs.read_cc_a()
if self.enabled {
self.regs.read_cc_a()
} else {
self.duty_cycle
}
}
fn get_max_duty(&self) -> Self::Duty {
@ -610,7 +622,10 @@ impl<S: SliceId, M: SliceMode> PwmPin for Channel<S, M, A> {
}
fn set_duty(&mut self, duty: Self::Duty) {
self.regs.write_cc_a(duty)
self.duty_cycle = duty;
if self.enabled {
self.regs.write_cc_a(duty)
}
}
}
@ -620,16 +635,26 @@ impl<S: SliceId, M: SliceMode> PwmPin for Channel<S, M, B> {
/// We cant disable the channel without disturbing the other channel.
/// So this just sets the duty cycle to zero
fn disable(&mut self) {
self.duty_cycle = self.regs.read_cc_b();
if self.enabled {
self.duty_cycle = self.regs.read_cc_b();
}
self.enabled = false;
self.regs.write_cc_b(0)
}
fn enable(&mut self) {
self.regs.write_cc_b(self.duty_cycle)
if !self.enabled {
self.enabled = true;
self.regs.write_cc_b(self.duty_cycle)
}
}
fn get_duty(&self) -> Self::Duty {
self.regs.read_cc_b()
if self.enabled {
self.regs.read_cc_b()
} else {
self.duty_cycle
}
}
fn get_max_duty(&self) -> Self::Duty {
@ -637,7 +662,10 @@ impl<S: SliceId, M: SliceMode> PwmPin for Channel<S, M, B> {
}
fn set_duty(&mut self, duty: Self::Duty) {
self.regs.write_cc_b(duty)
self.duty_cycle = duty;
if self.enabled {
self.regs.write_cc_b(duty)
}
}
}