40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
// The library will have build errors when built on its own (due to not having embassy-stm32 feature for a specific microcontroller)
|
|
// but it will work fine when used as a dependency for firmware that has the feature for a specific stm32 microcontroller.
|
|
|
|
use crate::comms;
|
|
use embassy_stm32::peripherals::USB_OTG_FS;
|
|
use embassy_stm32::usb_otg::{Driver, Endpoint, In, Out};
|
|
use embassy_usb::driver::{EndpointIn, EndpointOut};
|
|
use embassy_usb::UsbDevice;
|
|
|
|
pub type TypedUSB = UsbDevice<'static, Driver<'static, USB_OTG_FS>>;
|
|
pub type TypedInterIn = Endpoint<'static, USB_OTG_FS, In>;
|
|
pub type TypedInterOut = Endpoint<'static, USB_OTG_FS, Out>;
|
|
|
|
pub struct UsbIO {
|
|
sender: TypedInterIn,
|
|
receiver: TypedInterOut,
|
|
}
|
|
|
|
impl comms::Sender for TypedInterIn {
|
|
async fn send(&mut self, msg: &[u8]) -> Result<(), comms::Reset> {
|
|
self.write(msg).await.map_err(|_| comms::Reset)
|
|
}
|
|
}
|
|
|
|
impl comms::Receiver for TypedInterOut {
|
|
#[cfg(feature = "single-packet-msgs")]
|
|
async fn receive(&mut self, buffer: &mut [u8]) -> Result<(), comms::Reset> {
|
|
// This is OK when all our messages are smaller than a single packet.
|
|
self.read(buffer)
|
|
.await
|
|
.map(|_| ())
|
|
.map_err(|_| comms::Reset)
|
|
}
|
|
|
|
#[cfg(not(feature = "single-packet-msgs"))]
|
|
async fn receive(&mut self, buffer: &mut [u8]) -> Result<(), comms::Reset> {
|
|
todo!("Decide if we want a general purpose multi-packet message receive")
|
|
}
|
|
}
|