Enable pullup on DP.

1 files changed, 3 insertions, 0 deletions

diff --git a/main.cpp b/main.cpp
index 2898f2b..2fafeb6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -42,9 +42,12 @@ int main() {
 	led_red.on();
 	led_blue.off();
 	
+	usb_vbus.set_mode(Pin::Input);
 	usb_dm.set_mode(Pin::AF);
+	usb_dm.set_pull(Pin::PullNone);
 	usb_dm.set_af(10);
 	usb_dp.set_mode(Pin::AF);
+	usb_dp.set_pull(Pin::PullUp);
 	usb_dp.set_af(10);
 	
 	RCC.enable(RCC.OTGFS);