From e5897ca7a456457c63dbe9fe5ab59cb106e540c4 Mon Sep 17 00:00:00 2001
From: Jan Niehusmann <jan@gondor.com>
Date: Fri, 24 Jun 2022 00:24:27 +0200
Subject: [PATCH] Fix PIO rx fifo status (#367)

* Implement embedded-hal 1.0.0-alpha.8 traits

* Add comment about missing SPI traits

* Fix doc of rx.is_empty() and add rx.is_full()
---
 rp2040-hal/src/pio.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/rp2040-hal/src/pio.rs b/rp2040-hal/src/pio.rs
index 3901ab7..2153c13 100644
--- a/rp2040-hal/src/pio.rs
+++ b/rp2040-hal/src/pio.rs
@@ -1138,10 +1138,15 @@ impl<SM: ValidStateMachine> Rx<SM> {
             .modify(|_, w| w.autopush().bit(enable))
     }
 
-    /// Indicate if the tx FIFO is full
+    /// Indicate if the rx FIFO is empty
     pub fn is_empty(&self) -> bool {
         self.register_block().fstat.read().rxempty().bits() & (1 << SM::id()) != 0
     }
+
+    /// Indicate if the rx FIFO is full
+    pub fn is_full(&self) -> bool {
+        self.register_block().fstat.read().rxfull().bits() & (1 << SM::id()) != 0
+    }
 }
 
 /// PIO TX FIFO handle.