From 6ff0614cb63a6fd95bbb062bc15eeac9a24359f0 Mon Sep 17 00:00:00 2001
From: Ulf Lilleengen <ulf.lilleengen@gmail.com>
Date: Tue, 3 Aug 2021 15:17:04 +0200
Subject: Add uart::Read DMA-based implementation

* Rename existing read() to bread() (blocking)
---
 examples/stm32f4/src/bin/usart.rs     |  2 +-
 examples/stm32h7/src/bin/usart.rs     |  2 +-
 examples/stm32l0/src/bin/usart_dma.rs | 42 +++++++++++++++++++++++++++++++++++
 examples/stm32l4/src/bin/usart.rs     |  2 +-
 4 files changed, 45 insertions(+), 3 deletions(-)
 create mode 100644 examples/stm32l0/src/bin/usart_dma.rs

(limited to 'examples')

diff --git a/examples/stm32f4/src/bin/usart.rs b/examples/stm32f4/src/bin/usart.rs
index 8f0e04e57..40e862f58 100644
--- a/examples/stm32f4/src/bin/usart.rs
+++ b/examples/stm32f4/src/bin/usart.rs
@@ -33,7 +33,7 @@ fn main() -> ! {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.read(&mut buf).unwrap();
+        usart.bread(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
diff --git a/examples/stm32h7/src/bin/usart.rs b/examples/stm32h7/src/bin/usart.rs
index 11e04f33c..88420ae3e 100644
--- a/examples/stm32h7/src/bin/usart.rs
+++ b/examples/stm32h7/src/bin/usart.rs
@@ -34,7 +34,7 @@ async fn main_task() {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.read(&mut buf).unwrap();
+        usart.bread(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
diff --git a/examples/stm32l0/src/bin/usart_dma.rs b/examples/stm32l0/src/bin/usart_dma.rs
new file mode 100644
index 000000000..0a5859b75
--- /dev/null
+++ b/examples/stm32l0/src/bin/usart_dma.rs
@@ -0,0 +1,42 @@
+#![no_std]
+#![no_main]
+#![feature(trait_alias)]
+#![feature(min_type_alias_impl_trait)]
+#![feature(impl_trait_in_bindings)]
+#![feature(type_alias_impl_trait)]
+#![allow(incomplete_features)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+
+use example_common::*;
+
+use defmt::panic;
+use embassy::executor::Spawner;
+use embassy_stm32::usart::{Config, Uart};
+use embassy_stm32::{rcc, Peripherals};
+use embassy_traits::uart::{Read, Write};
+
+#[embassy::main]
+async fn main(_spawner: Spawner, mut p: Peripherals) {
+    let mut rcc = rcc::Rcc::new(p.RCC);
+    rcc.enable_debug_wfe(&mut p.DBGMCU, true);
+
+    let mut usart = Uart::new(
+        p.USART1,
+        p.PB7,
+        p.PB6,
+        p.DMA1_CH2,
+        p.DMA1_CH3,
+        Config::default(),
+    );
+
+    usart.write(b"Hello Embassy World!\r\n").await.unwrap();
+    info!("wrote Hello, starting echo");
+
+    let mut buf = [0; 1];
+    loop {
+        usart.read(&mut buf[..]).await.unwrap();
+        usart.write(&buf[..]).await.unwrap();
+    }
+}
diff --git a/examples/stm32l4/src/bin/usart.rs b/examples/stm32l4/src/bin/usart.rs
index 06abd41a2..c71825bf5 100644
--- a/examples/stm32l4/src/bin/usart.rs
+++ b/examples/stm32l4/src/bin/usart.rs
@@ -33,7 +33,7 @@ fn main() -> ! {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.read(&mut buf).unwrap();
+        usart.bread(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
-- 
cgit 


From 0d02342b2d9fba686ae10caee8486141f20848c5 Mon Sep 17 00:00:00 2001
From: Ulf Lilleengen <ulf.lilleengen@gmail.com>
Date: Wed, 4 Aug 2021 08:34:30 +0200
Subject: Rename bread -> read_blocking

---
 examples/stm32f4/src/bin/usart.rs | 2 +-
 examples/stm32h7/src/bin/usart.rs | 2 +-
 examples/stm32l4/src/bin/usart.rs | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

(limited to 'examples')

diff --git a/examples/stm32f4/src/bin/usart.rs b/examples/stm32f4/src/bin/usart.rs
index 40e862f58..a068df520 100644
--- a/examples/stm32f4/src/bin/usart.rs
+++ b/examples/stm32f4/src/bin/usart.rs
@@ -33,7 +33,7 @@ fn main() -> ! {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.bread(&mut buf).unwrap();
+        usart.read_blocking(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
diff --git a/examples/stm32h7/src/bin/usart.rs b/examples/stm32h7/src/bin/usart.rs
index 88420ae3e..7bdd3f000 100644
--- a/examples/stm32h7/src/bin/usart.rs
+++ b/examples/stm32h7/src/bin/usart.rs
@@ -34,7 +34,7 @@ async fn main_task() {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.bread(&mut buf).unwrap();
+        usart.read_blocking(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
diff --git a/examples/stm32l4/src/bin/usart.rs b/examples/stm32l4/src/bin/usart.rs
index c71825bf5..ebe06dc26 100644
--- a/examples/stm32l4/src/bin/usart.rs
+++ b/examples/stm32l4/src/bin/usart.rs
@@ -33,7 +33,7 @@ fn main() -> ! {
 
     let mut buf = [0u8; 1];
     loop {
-        usart.bread(&mut buf).unwrap();
+        usart.read_blocking(&mut buf).unwrap();
         usart.bwrite_all(&buf).unwrap();
     }
 }
-- 
cgit