Merge pull request 'Merge first (maybe) stable version usb-avr for atmega32u4/atmega16u4' (#1) from test into main

Reviewed-on: #1
This commit is contained in:
doryan 2025-05-18 22:52:52 +03:00
commit 5ac1a07c6b

View File

@ -14,6 +14,10 @@ pub use types::*;
use types::{DPRAM_SIZE, ENDPOINTS_ALLOC_LAYOUT, ONE_MS_16_MGHZ};
const RESTRICT_RW_FLAG: u8 = !(1 << 5);
const USBINT_CLEAR: u8 = 1 << 0;
const UDINT_CLEAR: u8 = !(1 << 7 | 1 << 1);
impl<const L: usize> UsbBus for UsbDevice<L> {
fn alloc_ep(
&mut self,
@ -24,60 +28,58 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
_interval: u8,
) -> UsbResult<EndpointAddress> {
// Handle first endpoint. //
free(|_cs| {
if ep_addr == Some(EndpointAddress::from_parts(0, UsbDirection::In)) {
Ok(ep_addr.unwrap())
} else {
let address = match ep_addr {
// If current endpoint doesn't allocated, assign ep_addr to variable. //
Some(addr) if !self.ep_table[addr.index()].is_allocated => addr,
// If ep_aadr not provided, or current endpoint is allocated, try to find next free endpoint, otherwise return UsbError. //
_ => {
let index = self
.ep_table
.iter()
.enumerate()
.skip(1)
.find(|(index, ep)| {
!ep.is_allocated
&& max_packet_size <= ENDPOINTS_ALLOC_LAYOUT[*index]
})
.ok_or(UsbError::EndpointOverflow)?
.0;
if ep_addr == Some(EndpointAddress::from_parts(0, UsbDirection::In)) {
ep_addr.ok_or(UsbError::InvalidState)
} else {
let address = match ep_addr {
// If current endpoint doesn't allocated, assign ep_addr to variable. //
Some(addr) if !self.ep_table[addr.index()].is_allocated => addr,
EndpointAddress::from_parts(index, ep_dir)
}
};
// If ep_aadr not provided, or current endpoint is allocated, try to find next free endpoint, otherwise return UsbError. //
_ => {
let index = self
.ep_table
.iter()
.enumerate()
.skip(1)
.find(|(index, ep)| {
!ep.is_allocated && max_packet_size <= ENDPOINTS_ALLOC_LAYOUT[*index]
})
.ok_or(UsbError::EndpointOverflow)?
.0;
// Select endpoint info by address index. //
let target_endpoint = &mut self.ep_table[address.index()];
// Get power of two number of endpoint size. //
let ep_size = max(8, max_packet_size.next_power_of_two());
// Endpoint allocation marker. //
if DPRAM_SIZE - self.dpram_already_used < ep_size {
Err(UsbError::EndpointMemoryOverflow)
} else {
// Set endpoint parameters. //
target_endpoint.set_dir(ep_dir);
target_endpoint.set_type(ep_type);
target_endpoint.set_size(ep_size)?;
// Add used dpram memory. //
target_endpoint.is_allocated = true;
self.dpram_already_used += ep_size;
Ok(address)
EndpointAddress::from_parts(index, ep_dir)
}
};
// Select endpoint info by address index. //
let target_endpoint = &mut self.ep_table[address.index()];
// Get power of two number of endpoint size. //
let ep_size = max(8, max_packet_size.next_power_of_two());
// Endpoint allocation marker. //
if DPRAM_SIZE - self.dpram_already_used < ep_size {
Err(UsbError::EndpointMemoryOverflow)
} else {
// Set endpoint parameters. //
target_endpoint.set_dir(ep_dir);
target_endpoint.set_type(ep_type);
target_endpoint.set_size(ep_size)?;
// Add used dpram memory. //
target_endpoint.is_allocated = true;
self.dpram_already_used += ep_size;
Ok(address)
}
})
}
}
fn enable(&mut self) {
@ -116,7 +118,7 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
// Endpoint configuration //
self.allocated_endpoints().for_each(|(i, _ep)| {
self.configure_endpoint(cs, i).unwrap();
let _ = self.configure_endpoint(cs, i);
});
// Set high speed and attach the USB. //
@ -132,17 +134,15 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
}
fn force_reset(&self) -> UsbResult<()> {
free(|cs| {
let usbcon = &self.usb.borrow(cs).usbcon;
usbcon.modify(|_, w| w.usbe().set_bit());
});
let set_detach = |bit| {
free(|cs| {
self.usb.borrow(cs).udcon.modify(|_, w| w.detach().bit(bit));
});
};
set_detach(true);
delay_cycles(ONE_MS_16_MGHZ);
free(|cs| {
let usbcon = &self.usb.borrow(cs).usbcon;
usbcon.modify(|_, w| w.usbe().set_bit());
});
set_detach(false);
Ok(())
}
@ -162,7 +162,8 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
if usbint.vbusti().bit_is_set() {
usb.usbint
.write(|w| unsafe { w.bits(0x01) }.vbusti().clear_bit());
.write(|w| unsafe { w.bits(USBINT_CLEAR) }.vbusti().clear_bit());
if usb.usbsta.read().vbus().bit_is_set() {
return PollResult::Resume;
} else {
@ -184,7 +185,7 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
if udint.sofi().bit_is_set() {
usb.udint
.write(|w| unsafe { w.bits(0x7d) }.sofi().clear_bit());
.write(|w| unsafe { w.bits(UDINT_CLEAR) }.sofi().clear_bit());
}
if usb.usbcon.read().frzclk().bit_is_clear() {
@ -226,60 +227,62 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
free(|cs| {
let usb = self.usb.borrow(cs);
if let Err(error) = self.select_endpoint(cs, ep_addr.index()) {
Err(error)
} else {
let ep = &self.ep_table[ep_addr.index()];
self.select_endpoint(cs, ep_addr.index())?;
if ep.ep_type == 0 {
let ueintx = usb.ueintx.read();
let ep = &self.ep_table[ep_addr.index()];
if ueintx.rxouti().bit_is_clear() && ueintx.rxstpi().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
if ep.ep_type == 0 {
let ueintx = usb.ueintx.read();
let buf_size = self.get_size(cs);
if buf.len() < buf_size {
return Err(UsbError::BufferOverflow);
}
for byte in &mut buf[..buf_size] {
*byte = usb.uedatx.read().bits();
}
usb.ueintx.write(|w| {
unsafe { w.bits(0xdf) }
.rxouti()
.clear_bit()
.rxstpi()
.clear_bit()
});
Ok(buf_size)
} else {
if usb.ueintx.read().rxouti().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
usb.ueintx
.write(|w| unsafe { w.bits(0xdf) }.rxouti().clear_bit());
let mut bytes_read = 0;
for slot in buf {
if usb.ueintx.read().rwal().bit_is_clear() {
break;
}
*slot = usb.uedatx.read().bits();
bytes_read += 1;
}
if usb.ueintx.read().rwal().bit_is_set() {
return Err(UsbError::BufferOverflow);
}
usb.ueintx
.write(|w| unsafe { w.bits(0xdf) }.fifocon().clear_bit());
Ok(bytes_read)
if ueintx.rxouti().bit_is_clear() && ueintx.rxstpi().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
let buf_size = self.get_size(cs);
if buf.len() < buf_size {
return Err(UsbError::BufferOverflow);
}
for byte in &mut buf[..buf_size] {
*byte = usb.uedatx.read().bits();
}
usb.ueintx.write(|w| {
unsafe { w.bits(RESTRICT_RW_FLAG) }
.rxouti()
.clear_bit()
.rxstpi()
.clear_bit()
});
Ok(buf_size)
} else {
if usb.ueintx.read().rxouti().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
usb.ueintx
.write(|w| unsafe { w.bits(RESTRICT_RW_FLAG) }.rxouti().clear_bit());
let mut bytes_read = 0;
for slot in buf {
if usb.ueintx.read().rwal().bit_is_clear() {
break;
}
*slot = usb.uedatx.read().bits();
bytes_read += 1;
}
if usb.ueintx.read().rwal().bit_is_set() {
return Err(UsbError::BufferOverflow);
}
usb.ueintx
.write(|w| unsafe { w.bits(RESTRICT_RW_FLAG) }.fifocon().clear_bit());
Ok(bytes_read)
}
})
}
@ -291,13 +294,13 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
usb.udint.modify(|_, w| w.eorsti().clear_bit());
self.allocated_endpoints().for_each(|(i, _)| {
self.configure_endpoint(cs, i).unwrap();
let _ = self.configure_endpoint(cs, i);
});
// Clear resume informations. //
usb.udint.write(|w| {
unsafe { w.bits(0x7d) }
unsafe { w.bits(UDINT_CLEAR) }
.wakeupi()
.clear_bit()
.suspi()
@ -325,7 +328,7 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
usb.usbcon.modify(|_, w| w.frzclk().clear_bit());
usb.udint.write(|w| {
unsafe { w.bits(0x7d) }
unsafe { w.bits(UDINT_CLEAR) }
.wakeupi()
.clear_bit()
.suspi()
@ -369,7 +372,7 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
let (usb, pll) = (self.usb.borrow(cs), self.pll.borrow(cs));
usb.udint.write(|w| {
unsafe { w.bits(0x7d) }
unsafe { w.bits(UDINT_CLEAR) }
.wakeupi()
.clear_bit()
.suspi()
@ -395,14 +398,14 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
free(|cs| {
let usb = self.usb.borrow(cs);
if let Err(error) = self.select_endpoint(cs, ep_addr.index()) {
Err(error)
} else {
let ep = &self.ep_table[ep_addr.index()];
self.select_endpoint(cs, ep_addr.index())?;
// Endpoint type confitions //
let ep = &self.ep_table[ep_addr.index()];
if ep.ep_type == 0 {
// Endpoint type confitions //
match ep.ep_type {
0 => {
if usb.ueintx.read().txini().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
@ -416,13 +419,15 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
}
usb.ueintx
.write(|w| unsafe { w.bits(0xdf) }.txini().clear_bit());
} else {
.write(|w| unsafe { w.bits(RESTRICT_RW_FLAG) }.txini().clear_bit());
}
_ => {
if usb.ueintx.read().txini().bit_is_clear() {
return Err(UsbError::WouldBlock);
}
usb.ueintx.write(|w| {
unsafe { w.bits(0xdf) }
unsafe { w.bits(RESTRICT_RW_FLAG) }
.txini()
.clear_bit()
.rxouti()
@ -438,19 +443,19 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
}
usb.ueintx.write(|w| {
unsafe { w.bits(0xdf) }
unsafe { w.bits(RESTRICT_RW_FLAG) }
.rxouti()
.clear_bit()
.fifocon()
.clear_bit()
});
}
};
let pending_ins = self.pending_ins.borrow(cs);
pending_ins.set(pending_ins.get() | 1 << ep_addr.index());
let pending_ins = self.pending_ins.borrow(cs);
pending_ins.set(pending_ins.get() | 1 << ep_addr.index());
Ok(buf.len())
}
Ok(buf.len())
})
}
}