Merge pull request #4985 from cesardtamayo/feat/blinky_example_init_fix

Feat/blinky example init fix

1 files changed, 31 insertions, 2 deletions

diff --git a/examples/stm32wba6/src/bin/blinky.rs b/examples/stm32wba6/src/bin/blinky.rs
index 0d803b257..95f3339b7 100644
--- a/examples/stm32wba6/src/bin/blinky.rs
+++ b/examples/stm32wba6/src/bin/blinky.rs
@@ -3,16 +3,45 @@
 
 use defmt::*;
 use embassy_executor::Spawner;
+use embassy_stm32::Config;
 use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::rcc::{
+    AHB5Prescaler, AHBPrescaler, APBPrescaler, PllDiv, PllMul, PllPreDiv, PllSource, Sysclk, VoltageScale,
+};
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
-    let p = embassy_stm32::init(Default::default());
+    let mut config = Config::default();
+    // Fine-tune PLL1 dividers/multipliers
+    config.rcc.pll1 = Some(embassy_stm32::rcc::Pll {
+        source: PllSource::HSI,
+        prediv: PllPreDiv::DIV1,  // PLLM = 1 → HSI / 1 = 16 MHz
+        mul: PllMul::MUL30,       // PLLN = 30 → 16 MHz * 30 = 480 MHz VCO
+        divr: Some(PllDiv::DIV5), // PLLR = 5 → 96 MHz (Sysclk)
+        // divq: Some(PllDiv::DIV10), // PLLQ = 10 → 48 MHz (NOT USED)
+        divq: None,
+        divp: Some(PllDiv::DIV30), // PLLP = 30 → 16 MHz (USBOTG)
+        frac: Some(0),             // Fractional part (enabled)
+    });
+
+    config.rcc.ahb_pre = AHBPrescaler::DIV1;
+    config.rcc.apb1_pre = APBPrescaler::DIV1;
+    config.rcc.apb2_pre = APBPrescaler::DIV1;
+    config.rcc.apb7_pre = APBPrescaler::DIV1;
+    config.rcc.ahb5_pre = AHB5Prescaler::DIV4;
+
+    // voltage scale for max performance
+    config.rcc.voltage_scale = VoltageScale::RANGE1;
+    // route PLL1_P into the USB‐OTG‐HS block
+    config.rcc.sys = Sysclk::PLL1_R;
+
+    let p = embassy_stm32::init(config);
     info!("Hello World!");
 
-    let mut led = Output::new(p.PB4, Level::High, Speed::Low);
+    // LD2 - PC4
+    let mut led = Output::new(p.PC4, Level::High, Speed::Low);
 
     loop {
         info!("high");