Minor changes to hopefully make ISO IN eps work

Author: dgoodlad

src/bus.rs

@@ -498,7 +498,8 @@ impl<USB: UsbPeripheral> usb_device::bus::UsbBus for UsbBus<USB> {
             write_reg!(otg_global, regs.global(), GINTMSK,
                 USBRST: 1, ENUMDNEM: 1,
                 USBSUSPM: 1, WUIM: 1,
-                IEPINT: 1, RXFLVLM: 1
+                IEPINT: 1, RXFLVLM: 1,
+                SOFM: 1
             );
 
             // clear pending interrupts

src/endpoint.rs

@@ -139,6 +139,13 @@ impl EndpointIn {
             }
         }
 
+        #[cfg(feature = "fs")]
+        write_reg!(endpoint_in, ep, DIEPTSIZ, PKTCNT: 1, XFRSIZ: buf.len() as u32);
+        #[cfg(feature = "hs")]
+        write_reg!(endpoint_in, ep, DIEPTSIZ, MCNT: 1, PKTCNT: 1, XFRSIZ: buf.len() as u32);
+
+        modify_reg!(endpoint_in, ep, DIEPCTL, CNAK: 1, EPENA: 1);
+
         match self.descriptor.ep_type {
             // Isochronous endpoints must set the correct even/odd frame bit to
             // correspond with the next frame's number.
@@ -150,19 +157,12 @@ impl EndpointIn {
                     modify_reg!(endpoint_in, ep, DIEPCTL, SD0PID_SEVNFRM: 1);
                 } else {
                     // Previous frame number is even, so upcoming frame is odd
-                    modify_reg!(endpoint_in, ep, DIEPCTL, SODDFRM_SD1PID: 1);
+                    modify_reg!(endpoint_in, ep, DIEPCTL, SODDFRM: 1);
                 }
             },
             _ => {}
         }
 
-        #[cfg(feature = "fs")]
-        write_reg!(endpoint_in, ep, DIEPTSIZ, PKTCNT: 1, XFRSIZ: buf.len() as u32);
-        #[cfg(feature = "hs")]
-        write_reg!(endpoint_in, ep, DIEPTSIZ, MCNT: 1, PKTCNT: 1, XFRSIZ: buf.len() as u32);
-
-        modify_reg!(endpoint_in, ep, DIEPCTL, CNAK: 1, EPENA: 1);
-
         fifo_write(self.usb, self.index(), buf);
 
         Ok(())