PWM WS2812B example and per sequence config

Demonstrates how to set the colour of a WS2812B to blue using PWM, and the use of multiple sequences along with their own config. This required an API change.

examples/nrf/src/bin/pwm_sequence.rs

@@ -8,7 +8,7 @@ use defmt::*;
 use embassy::executor::Spawner;
 use embassy::time::{Duration, Timer};
 use embassy_nrf::gpio::NoPin;
-use embassy_nrf::pwm::{Prescaler, SequenceConfig, SequenceMode, SequencePwm};
+use embassy_nrf::pwm::{Config, Prescaler, SequenceMode, SequencePwm};
 use embassy_nrf::Peripherals;
 
 #[embassy::main]
@@ -16,26 +16,39 @@ async fn main(_spawner: Spawner, p: Peripherals) {
     let seq_values_1: [u16; 5] = [1000, 250, 100, 50, 0];
     let seq_values_2: [u16; 5] = [0, 50, 100, 250, 1000];
 
-    let mut config = SequenceConfig::default();
+    let mut config = Config::default();
     config.prescaler = Prescaler::Div128;
     // 1 period is 1000 * (128/16mhz = 0.000008s = 0.008ms) = 8us
     // but say we want to hold the value for 5000ms
     // so we want to repeat our value as many times as necessary until 5000ms passes
     // want 5000/8 = 625 periods total to occur, so 624 (we get the one period for free remember)
-    config.refresh = 624;
+    let mut seq_config = Config::default();
+    seq_config.refresh = 624;
     // thus our sequence takes 5 * 5000ms or 25 seconds
 
     let mut pwm = unwrap!(SequencePwm::new(
         p.PWM0, p.P0_13, NoPin, NoPin, NoPin, config,
     ));
-    let _ = pwm.start(&seq_values_1, SequenceMode::Infinite);
+    let _ = pwm.start(
+        &seq_values_1,
+        seq_config,
+        None,
+        None,
+        SeqSequenceMode::Infinite,
+    );
 
     info!("pwm started!");
 
     Timer::after(Duration::from_millis(20000)).await;
     info!("pwm starting with another sequence!");
 
-    let _ = pwm.start(&seq_values_2, SequenceMode::Infinite);
+    let _ = pwm.start(
+        &seq_values_2,
+        seq_config,
+        None,
+        None,
+        SequenceMode::Infinite,
+    );
 
     // we can abort a sequence if we need to before its complete with pwm.stop()
     // or stop is also implicitly called when the pwm peripheral is dropped