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espressif_tinyusb
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always response if GET_INTERFACE even if class driver does not support alt interface

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hathach 2020-04-15 23:08:49 +07:00
parent ae9f01fe95
commit 0ddbda08cb
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1 changed files with 10 additions and 1 deletions
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11
src/device/usbd.c
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@ -573,7 +573,16 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
// all requests to Interface (STD or Class) is forwarded to class driver.
// notable requests are: GET HID REPORT DESCRIPTOR, SET_INTERFACE, GET_INTERFACE
TU_VERIFY(invoke_class_control(rhport, drvid, p_request));
if ( !invoke_class_control(rhport, drvid, p_request) )
{
// For STD GET_INTERFACE even if class driver doesn't support alternate setting
// It is still mandatory to response with value of zero
TU_VERIFY( TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type &&
TUSB_REQ_GET_INTERFACE == p_request->bRequest);
uint8_t alternate = 0;
tud_control_xfer(rhport, p_request, &alternate, 1);
}
}
break;