1 files changed, 14 insertions, 0 deletions
diff --git a/sw/eval-clock-cw-tx/src/main.rs b/sw/eval-clock-cw-tx/src/main.rs
index c91c545..d30318b 100644
--- a/sw/eval-clock-cw-tx/src/main.rs
+++ b/sw/eval-clock-cw-tx/src/main.rs
@@ -46,6 +46,7 @@ use embedded_hal::digital::v2::InputPin;
 use hd44780_driver::{Cursor, CursorBlink, Display, DisplayMode, HD44780};
 
 pub mod ui;
+pub mod usb;
 pub mod cw;
 pub mod state;
 pub mod si_clock;
@@ -92,8 +93,14 @@ fn main() -> ! {
     let mut rcc = dp.RCC.constrain();
     let mut afio = dp.AFIO.constrain(&mut rcc.apb2);
     let clocks = rcc.cfgr
+        .use_hse(16.mhz())
+        .sysclk(48.mhz())
+        .pclk1(24.mhz())
         .adcclk(2.mhz())
         .freeze(&mut flash.acr);
+
+    assert!(clocks.usbclk_valid());
+
     let mut delay = Delay::new(cp.SYST, clocks);
 
     delay.delay_ms(200u16);
@@ -102,6 +109,10 @@ fn main() -> ! {
     let mut gpiob = dp.GPIOB.split(&mut rcc.apb2);
     let mut gpioc = dp.GPIOC.split(&mut rcc.apb2);
 
+    let usb_dm = gpioa.pa11;
+    let usb_dp = gpioa.pa12.into_floating_input(&mut gpioa.crh);
+    let usb = usb::USB::new(dp.USB, usb_dm, usb_dp);
+
     // Buttons as analog inputs (multi-level)
     let pb0 = gpiob.pb0.into_floating_input(&mut gpiob.crl); // BTN1 Button B, has external pullup
     let pb1 = gpiob.pb1.into_floating_input(&mut gpiob.crl); // BTN0 Button A, has external pullup
@@ -173,6 +184,7 @@ fn main() -> ! {
     lcd.write_str(" 30m CW TX 2021 ", &mut delay).unwrap();
     delay.delay_ms(1_500u16);
 
+    usb.enable_interrupts();
 
     let mut siclock = {
         let shared = unsafe { &mut *SHARED.as_mut_ptr() };
@@ -349,6 +361,7 @@ fn TIM2() {
     }
 }
 
+#[allow(non_snake_case)]
 #[cortex_m_rt::exception]
 fn HardFault(ef: &ExceptionFrame) -> ! {
     let periph = unsafe { cortex_m::Peripherals::steal() };
@@ -360,6 +373,7 @@ fn HardFault(ef: &ExceptionFrame) -> ! {
     loop { }
 }
 
+#[allow(non_snake_case)]
 #[cortex_m_rt::exception]
 fn DefaultHandler(irqn: i16) {
     hprintln!("Unhandled exception (IRQn = {})", irqn).unwrap();