stm32/dma: fix h7 impls

embassy-stm32/src/dma/bdma.rs

@@ -138,7 +138,6 @@ unsafe fn on_irq() {
     }
 }
 
-
 /// safety: must be called only once
 pub(crate) unsafe fn init() {
     pac::interrupts! {
@@ -212,6 +211,9 @@ pac::bdma_channels! {
     };
 }
 
+// HACK: on stm32h7 "DMA" interrupts are for DMA, not BDMA, so this
+// would cause duplicate interrupt definitions. Do it manually insted
+#[cfg(not(rcc_h7))]
 pac::interrupts! {
     (DMA, $irq:ident) => {
         #[crate::interrupt]
@@ -220,3 +222,41 @@ pac::interrupts! {
         }
     };
 }
+
+#[cfg(rcc_h7)]
+mod _if_h7 {
+    use super::*;
+
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL0() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL1() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL2() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL3() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL4() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL5() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL6() {
+        on_irq()
+    }
+    #[crate::interrupt]
+    unsafe fn BDMA_CHANNEL7() {
+        on_irq()
+    }
+}