examples Remove the `fn config()` idiom.

It was only useful for doing #[embassy_executor::main(config = "config()")]`. Now that
it's gone, it makes more sense to build the config in main directly.

4 files changed, 12 insertions, 33 deletions

diff --git a/examples/stm32l5/src/bin/rng.rs b/examples/stm32l5/src/bin/rng.rs
index b7919424a..cec9078e6 100644
--- a/examples/stm32l5/src/bin/rng.rs
+++ b/examples/stm32l5/src/bin/rng.rs
@@ -9,7 +9,8 @@ use embassy_stm32::rng::Rng;
 use embassy_stm32::Config;
 use {defmt_rtt as _, panic_probe as _};
 
-fn config() -> Config {
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
     let mut config = Config::default();
     config.rcc.mux = ClockSrc::PLL(
         PLLSource::HSI16,
@@ -18,12 +19,8 @@ fn config() -> Config {
         PLLMul::Mul8,
         Some(PLLClkDiv::Div2),
     );
-    config
-}
+    let p = embassy_stm32::init(config);
 
-#[embassy_executor::main]
-async fn main(_spawner: Spawner) {
-    let p = embassy_stm32::init(config());
     info!("Hello World!");
 
     let mut rng = Rng::new(p.RNG);
diff --git a/examples/stm32l5/src/bin/usb_ethernet.rs b/examples/stm32l5/src/bin/usb_ethernet.rs
index cc7578990..769b67a2b 100644
--- a/examples/stm32l5/src/bin/usb_ethernet.rs
+++ b/examples/stm32l5/src/bin/usb_ethernet.rs
@@ -83,19 +83,13 @@ async fn net_task(stack: &'static Stack<Device>) -> ! {
     stack.run().await
 }
 
-fn config() -> Config {
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
     let mut config = Config::default();
-    config.rcc.mux = ClockSrc::HSE(Hertz(16_000_000));
-
     config.rcc.mux = ClockSrc::PLL(PLLSource::HSI16, PLLClkDiv::Div2, PLLSrcDiv::Div1, PLLMul::Mul10, None);
     config.rcc.hsi48 = true;
+    let p = embassy_stm32::init(config);
 
-    config
-}
-
-#[embassy_executor::main]
-async fn main(spawner: Spawner) {
-    let p = embassy_stm32::init(config());
     // Create the driver, from the HAL.
     let irq = interrupt::take!(USB_FS);
     let driver = Driver::new(p.USB, irq, p.PA12, p.PA11);
diff --git a/examples/stm32l5/src/bin/usb_hid_mouse.rs b/examples/stm32l5/src/bin/usb_hid_mouse.rs
index b8eef6d0d..ef0a20a42 100644
--- a/examples/stm32l5/src/bin/usb_hid_mouse.rs
+++ b/examples/stm32l5/src/bin/usb_hid_mouse.rs
@@ -17,19 +17,13 @@ use futures::future::join;
 use usbd_hid::descriptor::{MouseReport, SerializedDescriptor};
 use {defmt_rtt as _, panic_probe as _};
 
-fn config() -> Config {
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
     let mut config = Config::default();
-    config.rcc.mux = ClockSrc::HSE(Hertz(16_000_000));
-
     config.rcc.mux = ClockSrc::PLL(PLLSource::HSI16, PLLClkDiv::Div2, PLLSrcDiv::Div1, PLLMul::Mul10, None);
     config.rcc.hsi48 = true;
+    let p = embassy_stm32::init(config);
 
-    config
-}
-
-#[embassy_executor::main]
-async fn main(_spawner: Spawner) {
-    let p = embassy_stm32::init(config());
     // Create the driver, from the HAL.
     let irq = interrupt::take!(USB_FS);
     let driver = Driver::new(p.USB, irq, p.PA12, p.PA11);
diff --git a/examples/stm32l5/src/bin/usb_serial.rs b/examples/stm32l5/src/bin/usb_serial.rs
index f8894231c..a763a0b56 100644
--- a/examples/stm32l5/src/bin/usb_serial.rs
+++ b/examples/stm32l5/src/bin/usb_serial.rs
@@ -14,19 +14,13 @@ use embassy_usb_serial::{CdcAcmClass, State};
 use futures::future::join;
 use {defmt_rtt as _, panic_probe as _};
 
-fn config() -> Config {
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
     let mut config = Config::default();
-    config.rcc.mux = ClockSrc::HSE(Hertz(16_000_000));
-
     config.rcc.mux = ClockSrc::PLL(PLLSource::HSI16, PLLClkDiv::Div2, PLLSrcDiv::Div1, PLLMul::Mul10, None);
     config.rcc.hsi48 = true;
+    let p = embassy_stm32::init(config);
 
-    config
-}
-
-#[embassy_executor::main]
-async fn main(_spawner: Spawner) {
-    let p = embassy_stm32::init(config());
     info!("Hello World!");
 
     // Create the driver, from the HAL.