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trezorhal: fix setup of next OUT transfer

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Jan Pochyla 2017-03-28 01:14:49 +02:00 committed by Pavol Rusnak
parent 3a4cbacbff
commit 33e5ad1ac9
1 changed files with 4 additions and 1 deletions
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5
micropython/trezorhal/usb_hid-impl.h
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@ -162,7 +162,7 @@ static int usb_hid_class_init(USBD_HandleTypeDef *dev, usb_hid_state_t *state, u
state->idle_rate = 0;
state->alt_setting = 0;
// Prepare Out endpoint to receive next packet
// Prepare the OUT EP to receive next packet
USBD_LL_PrepareReceive(dev, state->ep_out, state->rx_buffer, state->max_packet_len);
return USBD_OK;
@ -252,6 +252,9 @@ static uint8_t usb_hid_class_data_out(USBD_HandleTypeDef *dev, usb_hid_state_t *
state->rx_buffer_len = USBD_LL_GetRxDataSize(dev, ep_num);
if (state->rx_buffer_len > 0) {
// Prepare the OUT EP to receive next packet
USBD_LL_PrepareReceive(dev, ep_num, state->rx_buffer, state->max_packet_len);
// Block the OUT EP until we process received data
usb_ep_set_nak(dev, ep_num);
}