diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 69cd9ff1..118143da 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -95,24 +95,21 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: true
-      - uses: actions/cache@v2
+      - uses: actions-rs/toolchain@v1
         with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ matrix.target }}-${{ hashFiles('**/Cargo.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-${{ matrix.target }}-
+          toolchain: stable
+      - name: cache
+        id: cache-target
+        uses: actions/cache@v2
+        with:
+          path: target
+          key: ${{ runner.os }}-${{ matrix.target }}
 
       # We have to append the "-D warnings" flag to .cargo/config rather than
       # using the RUSTFLAGS environment variable because if we set RUSTFLAGS
       # cargo will ignore the rustflags config in .cargo/config.
       - name: Check
         run: |
-          export CARGO_TARGET_DIR=$PWD/target
           mkdir -p .cargo
           echo -e '[target."cfg(all())"]\nrustflags = ["-D", "warnings"]' >> .cargo/config
           cd ${{ matrix.package }} && RUSTFLAGS=-Dwarnings cargo check --features=${{ matrix.features }} --target=${{ matrix.target }}
@@ -121,6 +118,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
       - name: Check fmt
         run: for i in embassy-*; do (cd $i; cargo fmt -- --check); done
 
@@ -128,22 +128,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions-rs/toolchain@v1
         with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-
+          toolchain: stable
       - name: Test
-        run: |
-          export CARGO_TARGET_DIR=$PWD/target
-          cd embassy
-          cargo test
+        run: cd embassy && cargo test
 
   metapac_gen:
     runs-on: ubuntu-latest
@@ -151,19 +140,8 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: true
-      - uses: actions/cache@v2
+      - uses: actions-rs/toolchain@v1
         with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-
+          toolchain: stable
       - name: Generate pregenerated metapac
-        run: |
-          export CARGO_TARGET_DIR=$PWD/target
-          cd stm32-metapac-gen
-          cargo run --release
+        run: cd stm32-metapac-gen; cargo run --release
diff --git a/README.md b/README.md
index 8d5fddd0..13bcf6e5 100644
--- a/README.md
+++ b/README.md
@@ -87,3 +87,4 @@ This work is licensed under either of
 - MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
 
 at your option.
+
diff --git a/embassy-stm32/src/dma/bdma.rs b/embassy-stm32/src/dma/bdma.rs
index c52188c3..2aa00ebe 100644
--- a/embassy-stm32/src/dma/bdma.rs
+++ b/embassy-stm32/src/dma/bdma.rs
@@ -143,7 +143,7 @@ unsafe fn on_irq() {
 /// safety: must be called only once
 pub(crate) unsafe fn init() {
     pac::interrupts! {
-        (BDMA, $irq:ident) => {
+        ($peri:ident, bdma, $block:ident, $signal_name:ident, $irq:ident) => {
             crate::interrupt::$irq::steal().enable();
         };
     }
@@ -242,7 +242,7 @@ pac::dma_channels! {
 }
 
 pac::interrupts! {
-    (BDMA, $irq:ident) => {
+    ($peri:ident, bdma, $block:ident, $signal_name:ident, $irq:ident) => {
         #[crate::interrupt]
         unsafe fn $irq () {
             on_irq()
diff --git a/embassy-stm32/src/dma/dma.rs b/embassy-stm32/src/dma/dma.rs
index 606c9d3d..47120c39 100644
--- a/embassy-stm32/src/dma/dma.rs
+++ b/embassy-stm32/src/dma/dma.rs
@@ -149,7 +149,7 @@ unsafe fn on_irq() {
 /// safety: must be called only once
 pub(crate) unsafe fn init() {
     pac::interrupts! {
-        (DMA, $irq:ident) => {
+        ($peri:ident, dma, $block:ident, $signal_name:ident, $irq:ident) => {
             interrupt::$irq::steal().enable();
         };
     }
@@ -248,7 +248,7 @@ pac::dma_channels! {
 }
 
 pac::interrupts! {
-    (DMA, $irq:ident) => {
+    ($peri:ident, dma, $block:ident, $signal_name:ident, $irq:ident) => {
         #[crate::interrupt]
         unsafe fn $irq () {
             on_irq()
diff --git a/stm32-data b/stm32-data
index 5412725b..07eae071 160000
--- a/stm32-data
+++ b/stm32-data
@@ -1 +1 @@
-Subproject commit 5412725bf5401c6d49c4932487d80463fdb02286
+Subproject commit 07eae071915f8ffbf311bd5dfc6391dcca92ee10
diff --git a/stm32-metapac-gen/src/lib.rs b/stm32-metapac-gen/src/lib.rs
index 203d943d..ce720c67 100644
--- a/stm32-metapac-gen/src/lib.rs
+++ b/stm32-metapac-gen/src/lib.rs
@@ -50,6 +50,8 @@ pub struct Peripheral {
     pub pins: Vec<Pin>,
     #[serde(default)]
     pub dma_channels: HashMap<String, Vec<PeripheralDmaChannel>>,
+    #[serde(default)]
+    pub interrupts: HashMap<String, String>
 }
 
 #[derive(Debug, Eq, PartialEq, Clone, Deserialize)]
@@ -306,9 +308,6 @@ pub fn gen(options: Options) {
             }
         }
 
-        let mut has_bdma = false;
-        let mut has_dma = false;
-
         for (name, p) in &core.peripherals {
             let captures = number_suffix_re.captures(&name).unwrap();
             let root_peri_name = captures.get(1).unwrap().as_str().to_string();
@@ -328,12 +327,6 @@ pub fn gen(options: Options) {
             if let Some(block) = &p.block {
                 let bi = BlockInfo::parse(block);
 
-                if bi.module == "bdma" {
-                    has_bdma = true
-                } else if bi.module == "dma" {
-                    has_dma = true
-                }
-
                 peripheral_counts.insert(
                     bi.module.clone(),
                     peripheral_counts.get(&bi.module).map_or(1, |v| v + 1),
@@ -352,6 +345,16 @@ pub fn gen(options: Options) {
                     peripheral_pins_table.push(row);
                 }
 
+                for (signal, irq_name) in &p.interrupts {
+                    let mut row = Vec::new();
+                    row.push(name.clone());
+                    row.push(bi.module.clone());
+                    row.push(bi.block.clone());
+                    row.push( signal.clone() );
+                    row.push( irq_name.to_ascii_uppercase() );
+                    interrupt_table.push(row)
+                }
+
                 for (request, dma_channels) in &p.dma_channels {
                     for channel in dma_channels.iter() {
                         let mut row = Vec::new();
@@ -553,19 +556,6 @@ pub fn gen(options: Options) {
 
             interrupt_table.push(vec![name.clone()]);
 
-            if name.starts_with("DMA1_") || name.starts_with("DMA2_") || name.contains("_DMA") {
-                if has_dma {
-                    interrupt_table.push(vec!["DMA".to_string(), name.clone()]);
-                } else if has_bdma {
-                    interrupt_table.push(vec!["BDMA".to_string(), name.clone()]);
-                }
-            }
-
-            if name.starts_with("BDMA_") || name.starts_with("BDMA1_") || name.starts_with("BDMA2_")
-            {
-                interrupt_table.push(vec!["BDMA".to_string(), name.clone()]);
-            }
-
             if name.contains("EXTI") {
                 interrupt_table.push(vec!["EXTI".to_string(), name.clone()]);
             }