Reset the examples to the original F4 flavor.

examples/stm32f4/.cargo/config.toml

@@ -3,8 +3,7 @@ build-std = ["core"]
 
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
 # replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
-#runner = "probe-run --chip STM32F429ZITx"
-runner = "probe-run --chip STM32F401RE"
+runner = "probe-run --chip STM32F429ZITx"
 
 rustflags = [
   # LLD (shipped with the Rust toolchain) is used as the default linker

examples/stm32f4/src/bin/spi_dma.rs

@@ -28,8 +28,8 @@ async fn main_task() {
     let mut spi = Spi::new(
         p.SPI1,
         p.PB3,
-        p.PA7,
-        p.PA6,
+        p.PB5,
+        p.PB4,
         p.DMA2_CH3,
         p.DMA2_CH2,
         Hertz(1_000_000),