From 0b42e12604bace0839d488b345baea4380583351 Mon Sep 17 00:00:00 2001
From: Thales Fragoso <thales.fragosoz@gmail.com>
Date: Fri, 11 Jun 2021 02:57:28 -0300
Subject: eth-v2: Fix off by one bug

---
 embassy-stm32/src/eth/v2/descriptors.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/embassy-stm32/src/eth/v2/descriptors.rs b/embassy-stm32/src/eth/v2/descriptors.rs
index 095eef20d..0c0046704 100644
--- a/embassy-stm32/src/eth/v2/descriptors.rs
+++ b/embassy-stm32/src/eth/v2/descriptors.rs
@@ -340,7 +340,7 @@ impl<const N: usize> RDesRing<N> {
                 unsafe {
                     ETH.ethernet_dma()
                         .dmacrx_dtpr()
-                        .write(|w| w.set_rdt(&self.rd[self.read_idx] as *const _ as u32));
+                        .write(|w| w.set_rdt(&self.rd[self.tail_idx] as *const _ as u32));
                 }
 
                 self.tail_idx = (self.tail_idx + 1) % N;
-- 
cgit