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-rw-r--r--app/src/usb/pipe/ctrl_pipe.rs177
1 files changed, 177 insertions, 0 deletions
diff --git a/app/src/usb/pipe/ctrl_pipe.rs b/app/src/usb/pipe/ctrl_pipe.rs
new file mode 100644
index 0000000..63390df
--- /dev/null
+++ b/app/src/usb/pipe/ctrl_pipe.rs
@@ -0,0 +1,177 @@
+/// Host Control Pipe.
+///
+/// Offset: 0x0c
+/// Reset: 0xXXXX
+/// Property: PAC Write-Protection, Write-Synchronized, Read-Synchronized
+#[derive(Clone, Copy, Debug)]
+#[repr(C)]
+pub(crate) struct CtrlPipe(u16);
+
+pub(crate) struct R {
+ bits: u16,
+}
+
+pub(crate) struct W {
+ bits: u16,
+}
+
+impl CtrlPipe {
+ pub fn read(&self) -> R {
+ R { bits: self.0 }
+ }
+
+ pub fn write<F>(&mut self, f: F)
+ where
+ F: FnOnce(&mut W) -> &mut W,
+ {
+ let mut w = W { bits: self.0 };
+ f(&mut w);
+ self.0 = w.bits;
+ }
+}
+
+impl From<u16> for CtrlPipe {
+ fn from(v: u16) -> Self {
+ Self(v)
+ }
+}
+
+impl R {
+ /// Value in raw bits.
+ pub fn bits(&self) -> u16 {
+ self.bits
+ }
+
+ pub fn permax(&self) -> PErMaxR {
+ let bits = {
+ const POS: u8 = 12;
+ const MASK: u16 = 0xf;
+ ((self.bits >> POS) & MASK) as u8
+ };
+
+ PErMaxR(bits)
+ }
+
+ pub fn pepnum(&self) -> PEpNumR {
+ let bits = {
+ const POS: u8 = 8;
+ const MASK: u16 = 0xf;
+ ((self.bits >> POS) & MASK) as u8
+ };
+
+ PEpNumR(bits)
+ }
+
+ pub fn pdaddr(&self) -> PDAddrR {
+ let bits = {
+ const POS: u8 = 0;
+ const MASK: u16 = 0x3f;
+ ((self.bits >> POS) & MASK) as u8
+ };
+
+ PDAddrR(bits)
+ }
+}
+
+/// Pipe Error Max Number
+///
+/// These bits define the maximum number of error for this Pipe before
+/// freezing the pipe automatically.
+pub(crate) struct PErMaxR(u8);
+impl PErMaxR {
+ pub fn max(&self) -> u8 {
+ self.0
+ }
+}
+
+/// Pipe EndPoint Number
+///
+/// These bits define the number of endpoint for this Pipe.
+pub(crate) struct PEpNumR(u8);
+impl PEpNumR {
+ pub fn epnum(&self) -> u8 {
+ self.0
+ }
+}
+
+/// Pipe Device Address
+///
+/// These bits define the Device Address for this pipe.
+pub(crate) struct PDAddrR(u8);
+impl PDAddrR {
+ pub fn addr(&self) -> u8 {
+ self.0
+ }
+}
+
+impl W {
+ /// Write raw bits.
+
+ pub unsafe fn bits(&mut self, v: u16) -> &mut Self {
+ self.bits = v;
+ self
+ }
+
+ pub fn permax(&mut self) -> PErMaxW {
+ PErMaxW { w: self }
+ }
+
+ pub fn pepnum(&mut self) -> PEpNumW {
+ PEpNumW { w: self }
+ }
+
+ pub fn pdaddr(&mut self) -> PDAddrW {
+ PDAddrW { w: self }
+ }
+}
+
+pub(crate) struct PErMaxW<'a> {
+ w: &'a mut W,
+}
+impl<'a> PErMaxW<'a> {
+ pub unsafe fn bits(self, v: u8) -> &'a mut W {
+ const POS: u8 = 12;
+ const MASK: u8 = 0xf;
+ self.w.bits &= !((MASK as u16) << POS);
+ self.w.bits |= ((v & MASK) as u16) << POS;
+ self.w
+ }
+
+ pub fn set_max(self, v: u8) -> &'a mut W {
+ unsafe { self.bits(v) }
+ }
+}
+
+pub(crate) struct PEpNumW<'a> {
+ w: &'a mut W,
+}
+impl<'a> PEpNumW<'a> {
+ pub unsafe fn bits(self, v: u8) -> &'a mut W {
+ const POS: u8 = 8;
+ const MASK: u8 = 0xf;
+ self.w.bits &= !((MASK as u16) << POS);
+ self.w.bits |= ((v & MASK) as u16) << POS;
+ self.w
+ }
+
+ pub fn set_epnum(self, v: u8) -> &'a mut W {
+ unsafe { self.bits(v) }
+ }
+}
+
+pub(crate) struct PDAddrW<'a> {
+ w: &'a mut W,
+}
+impl<'a> PDAddrW<'a> {
+ pub unsafe fn bits(self, v: u8) -> &'a mut W {
+ const POS: u8 = 0;
+ const MASK: u8 = 0x3f;
+ self.w.bits &= !((MASK as u16) << POS);
+ self.w.bits |= ((v & MASK) as u16) << POS;
+ self.w
+ }
+
+ pub fn set_addr(self, v: u8) -> &'a mut W {
+ unsafe { self.bits(v) }
+ }
+}