From 224eaaf79792a04a25bf7d5e768da41b2a030f7a Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Fri, 14 Apr 2023 22:49:56 +0200
Subject: [PATCH] stm32/sdmmc: switch to AFIT.

---
 embassy-stm32/Cargo.toml       |  2 +-
 embassy-stm32/src/sdmmc/mod.rs | 56 +++++++++++++---------------------
 examples/stm32f4/Cargo.toml    |  2 +-
 3 files changed, 23 insertions(+), 37 deletions(-)

diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index 969dc3b7..18b1d4d0 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -55,7 +55,7 @@ cortex-m = "0.7.6"
 futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
 rand_core = "0.6.3"
 sdio-host = "0.5.0"
-embedded-sdmmc = { git = "https://github.com/embassy-rs/embedded-sdmmc-rs", rev = "46d1b1c2ff13e31e282ec1e352421721694f126a", optional = true }
+embedded-sdmmc = { git = "https://github.com/embassy-rs/embedded-sdmmc-rs", rev = "a4f293d3a6f72158385f79c98634cb8a14d0d2fc", optional = true }
 critical-section = "1.1"
 atomic-polyfill = "1.0.1"
 stm32-metapac = "6"
diff --git a/embassy-stm32/src/sdmmc/mod.rs b/embassy-stm32/src/sdmmc/mod.rs
index 03d24dcb..ac00b517 100644
--- a/embassy-stm32/src/sdmmc/mod.rs
+++ b/embassy-stm32/src/sdmmc/mod.rs
@@ -1651,8 +1651,6 @@ foreach_peripheral!(
 
 #[cfg(feature = "embedded-sdmmc")]
 mod sdmmc_rs {
-    use core::future::Future;
-
     use embedded_sdmmc::{Block, BlockCount, BlockDevice, BlockIdx};
 
     use super::*;
@@ -1660,49 +1658,37 @@ mod sdmmc_rs {
     impl<'d, T: Instance, Dma: SdmmcDma<T>> BlockDevice for Sdmmc<'d, T, Dma> {
         type Error = Error;
 
-        type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a
-        where
-            Self: 'a;
-
-        type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a
-        where
-            Self: 'a;
-
-        fn read<'a>(
-            &'a mut self,
-            blocks: &'a mut [Block],
+        async fn read(
+            &mut self,
+            blocks: &mut [Block],
             start_block_idx: BlockIdx,
             _reason: &str,
-        ) -> Self::ReadFuture<'a> {
-            async move {
-                let mut address = start_block_idx.0;
+        ) -> Result<(), Self::Error> {
+            let mut address = start_block_idx.0;
 
-                for block in blocks.iter_mut() {
-                    let block: &mut [u8; 512] = &mut block.contents;
+            for block in blocks.iter_mut() {
+                let block: &mut [u8; 512] = &mut block.contents;
 
-                    // NOTE(unsafe) Block uses align(4)
-                    let block = unsafe { &mut *(block as *mut _ as *mut DataBlock) };
-                    self.read_block(address, block).await?;
-                    address += 1;
-                }
-                Ok(())
+                // NOTE(unsafe) Block uses align(4)
+                let block = unsafe { &mut *(block as *mut _ as *mut DataBlock) };
+                self.read_block(address, block).await?;
+                address += 1;
             }
+            Ok(())
         }
 
-        fn write<'a>(&'a mut self, blocks: &'a [Block], start_block_idx: BlockIdx) -> Self::WriteFuture<'a> {
-            async move {
-                let mut address = start_block_idx.0;
+        async fn write(&mut self, blocks: &[Block], start_block_idx: BlockIdx) -> Result<(), Self::Error> {
+            let mut address = start_block_idx.0;
 
-                for block in blocks.iter() {
-                    let block: &[u8; 512] = &block.contents;
+            for block in blocks.iter() {
+                let block: &[u8; 512] = &block.contents;
 
-                    // NOTE(unsafe) DataBlock uses align 4
-                    let block = unsafe { &*(block as *const _ as *const DataBlock) };
-                    self.write_block(address, block).await?;
-                    address += 1;
-                }
-                Ok(())
+                // NOTE(unsafe) DataBlock uses align 4
+                let block = unsafe { &*(block as *const _ as *const DataBlock) };
+                self.write_block(address, block).await?;
+                address += 1;
             }
+            Ok(())
         }
 
         fn num_blocks(&self) -> Result<BlockCount, Self::Error> {
diff --git a/examples/stm32f4/Cargo.toml b/examples/stm32f4/Cargo.toml
index 4b2f3d21..1736769e 100644
--- a/examples/stm32f4/Cargo.toml
+++ b/examples/stm32f4/Cargo.toml
@@ -8,7 +8,7 @@ license = "MIT OR Apache-2.0"
 embassy-sync = { version = "0.2.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "tick-hz-32_768"] }
-embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32f429zi", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32f429zi", "unstable-pac", "memory-x", "time-driver-any", "exti", "embedded-sdmmc"]  }
 embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"] }
 embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "nightly"] }