trezorhal: fix IN endpoint detection

8 years ago · a78221fd22
parent 33e5ad1ac9
commit a78221fd22
1 changed files with 1 additions and 1 deletions
--- a/micropython/trezorhal/usb_hid-impl.h
+++ b/micropython/trezorhal/usb_hid-impl.h
@ -236,7 +236,7 @@ static int usb_hid_class_setup(USBD_HandleTypeDef *dev, usb_hid_state_t *state,
 }

 static uint8_t usb_hid_class_data_in(USBD_HandleTypeDef *dev, usb_hid_state_t *state, uint8_t ep_num) {
-    if (ep_num == state->ep_in) {
+    if ((ep_num | 0x80) == state->ep_in) {
        // Ensure that the FIFO is empty before a new transfer,
        // this condition could be caused by a new transfer
        // before the end of the previous transfer.