riscv: remove code

all previous functionality has been replicated, and the code lives in
a branch anyway.

1 files changed, 0 insertions, 42 deletions

diff --git a/src-riscv/usb.rs b/src-riscv/usb.rs
deleted file mode 100755
index 1ec36af..0000000
--- a/src-riscv/usb.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-use gd32vf103xx_hal::pac;
-use gd32vf103xx_hal::gpio::{Input, Floating, gpioa::{PA11, PA12}};
-use gd32vf103xx_hal::time::Hertz;
-pub use synopsys_usb_otg::UsbBus;
-use synopsys_usb_otg::UsbPeripheral;
-
-#[allow(dead_code)]
-pub struct USB {
-    pub usb_global: pac::USBFS_GLOBAL,
-    pub usb_device: pac::USBFS_DEVICE,
-    pub usb_pwrclk: pac::USBFS_PWRCLK,
-    pub pin_dm: PA11<Input<Floating>>,
-    pub pin_dp: PA12<Input<Floating>>,
-    pub hclk: Hertz,
-}
-
-unsafe impl Sync for USB {}
-
-unsafe impl UsbPeripheral for USB {
-    const REGISTERS: *const () = pac::USBFS_GLOBAL::ptr() as *const ();
-
-    const HIGH_SPEED: bool = false;
-    const FIFO_DEPTH_WORDS: usize = 320;
-    const ENDPOINT_COUNT: usize = 4;
-
-    fn enable() {
-        let rcu = unsafe { &*pac::RCU::ptr() };
-
-        riscv::interrupt::free(|_| {
-            // Enable USB peripheral
-            rcu.ahben.modify(|_, w| w.usbfsen().set_bit());
-
-            // Reset USB peripheral
-            rcu.ahbrst.modify(|_, w| w.usbfsrst().set_bit());
-            rcu.ahbrst.modify(|_, w| w.usbfsrst().clear_bit());
-        });
-    }
-
-    fn ahb_frequency_hz(&self) -> u32 {
-        self.hclk.0
-    }
-}