From c873dcbb20f06e00659ab1c984ce7a753aaea7dc Mon Sep 17 00:00:00 2001
From: Caleb Jamison <caleb@cbjamo.com>
Date: Sat, 10 Feb 2024 16:55:32 -0500
Subject: [PATCH 1/2] Add explicit reset time to ws2812 write fn.
---
examples/rp/src/bin/pio_ws2812.rs | 2 ++
1 file changed, 2 insertions(+)
diff --git a/examples/rp/src/bin/pio_ws2812.rs b/examples/rp/src/bin/pio_ws2812.rs
index 9a97cb8a7..e9a3d0e41 100644
--- a/examples/rp/src/bin/pio_ws2812.rs
+++ b/examples/rp/src/bin/pio_ws2812.rs
@@ -107,6 +107,8 @@ impl<'d, P: Instance, const S: usize, const N: usize> Ws2812<'d, P, S, N> {
// DMA transfer
self.sm.tx().dma_push(self.dma.reborrow(), &words).await;
+
+ Timer::after_micros(55).await;
}
}
From b4dc406e199a7e4aafcdd601aaef999c6b7ba590 Mon Sep 17 00:00:00 2001
From: Caleb Jamison <caleb@cbjamo.com>
Date: Sat, 10 Feb 2024 17:00:10 -0500
Subject: [PATCH 2/2] Switch to ticker
---
examples/rp/src/bin/pio_ws2812.rs | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/examples/rp/src/bin/pio_ws2812.rs b/examples/rp/src/bin/pio_ws2812.rs
index e9a3d0e41..ac145933c 100644
--- a/examples/rp/src/bin/pio_ws2812.rs
+++ b/examples/rp/src/bin/pio_ws2812.rs
@@ -12,7 +12,7 @@ use embassy_rp::pio::{
Common, Config, FifoJoin, Instance, InterruptHandler, Pio, PioPin, ShiftConfig, ShiftDirection, StateMachine,
};
use embassy_rp::{bind_interrupts, clocks, into_ref, Peripheral, PeripheralRef};
-use embassy_time::Timer;
+use embassy_time::{Duration, Ticker, Timer};
use fixed::types::U24F8;
use fixed_macro::fixed;
use smart_leds::RGB8;
@@ -145,6 +145,7 @@ async fn main(_spawner: Spawner) {
let mut ws2812 = Ws2812::new(&mut common, sm0, p.DMA_CH0, p.PIN_16);
// Loop forever making RGB values and pushing them out to the WS2812.
+ let mut ticker = Ticker::every(Duration::from_millis(10));
loop {
for j in 0..(256 * 5) {
debug!("New Colors:");
@@ -154,7 +155,7 @@ async fn main(_spawner: Spawner) {
}
ws2812.write(&data).await;
- Timer::after_millis(10).await;
+ ticker.next().await;
}
}
}