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Jacob Rosenthal 2021-11-01 01:20:01 -07:00
parent 7b092f463e
commit 14dc524b84
3 changed files with 14 additions and 9 deletions
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19
embassy-nrf/src/pwm.rs
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@ -27,11 +27,16 @@ pub enum Prescaler {
/// How a sequence is read from RAM and is spread to the compare register /// How a sequence is read from RAM and is spread to the compare register
#[derive(Debug, Eq, PartialEq, Clone, Copy)] #[derive(Debug, Eq, PartialEq, Clone, Copy)]
pub enum SequenceLoad { pub enum SequenceLoad {
/// sequence in buffer will be used across all channels /// Provided sequence will be used across all channels
Common, Common,
/// Provided sequence contains grouped values for each channel ex:
/// [ch0_0_and_ch1_0, ch2_0_and_ch3_0, ... ch0_n_and_ch1_n, ch2_n_and_ch3_n]
Grouped, Grouped,
/// buffer holds [ch0_0, ch1_0, ch2_0, ch3_0... ch0_n, ch1_n, ch2_n, ch3_n] /// Provided sequence contains individual values for each channel ex:
/// [ch0_0, ch1_0, ch2_0, ch3_0... ch0_n, ch1_n, ch2_n, ch3_n]
Individual, Individual,
/// Similar to Individual mode, but only three channels are used. The fourth
/// value is loaded into the pulse generator counter as its top value.
Waveform, Waveform,
} }
@ -66,10 +71,10 @@ pub struct LoopingConfig<'a> {
pub sequence: &'a [u16], pub sequence: &'a [u16],
/// How a sequence is read from RAM and is spread to the compare register /// How a sequence is read from RAM and is spread to the compare register
pub sequence_load: SequenceLoad, pub sequence_load: SequenceLoad,
/// Number of additional PWM periods between samples loaded into compare register /// Number of additional PWM periods to delay between each sequence sample
pub refresh: u32, pub refresh: u32,
/// Number of additional PWM periods after the sequence ends /// Number of additional PWM periods after the sequence ends before starting the next sequence
pub enddelay: u32, pub end_delay: u32,
/// How many times to repeat the sequence /// How many times to repeat the sequence
pub additional_loops: LoopMode, pub additional_loops: LoopMode,
} }
@ -222,7 +227,7 @@ impl<'d, T: Instance> Pwm<'d, T> {
r.seq0.refresh.write(|w| unsafe { w.bits(config.refresh) }); r.seq0.refresh.write(|w| unsafe { w.bits(config.refresh) });
r.seq0 r.seq0
.enddelay .enddelay
.write(|w| unsafe { w.bits(config.enddelay) }); .write(|w| unsafe { w.bits(config.end_delay) });
r.seq1 r.seq1
.ptr .ptr
@ -233,7 +238,7 @@ impl<'d, T: Instance> Pwm<'d, T> {
r.seq1.refresh.write(|w| unsafe { w.bits(config.refresh) }); r.seq1.refresh.write(|w| unsafe { w.bits(config.refresh) });
r.seq1 r.seq1
.enddelay .enddelay
.write(|w| unsafe { w.bits(config.enddelay) }); .write(|w| unsafe { w.bits(config.end_delay) });
match config.additional_loops { match config.additional_loops {
// just the one time, no loop count // just the one time, no loop count

2
examples/nrf/src/bin/pwm_sequence.rs
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@ -23,7 +23,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
sequence: &seq_values, sequence: &seq_values,
sequence_load: SequenceLoad::Individual, sequence_load: SequenceLoad::Individual,
refresh: 0, refresh: 0,
enddelay: 0, end_delay: 0,
additional_loops: LoopMode::Additional(5), additional_loops: LoopMode::Additional(5),
}; };

2
examples/nrf/src/bin/pwm_simple_sin.rs
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@ -27,7 +27,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
sequence: &seq_values, sequence: &seq_values,
sequence_load: SequenceLoad::Common, sequence_load: SequenceLoad::Common,
refresh: 0, refresh: 0,
enddelay: 0, end_delay: 1,
additional_loops: LoopMode::Infinite, additional_loops: LoopMode::Infinite,
}; };