/**
* @brief Internal SETUP standard IN request handler.
*
* @param[in] p_inst Generic class instance.
* @param[in] p_setup_ev Setup event.
*
* @return Standard error code.
* @retval NRF_SUCCESS Request handled correctly.
* @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
*/
static ret_code_t setup_req_std_in(app_usbd_class_inst_t const * p_inst,
app_usbd_setup_evt_t const * p_setup_ev)
{
/* Only Get Descriptor standard IN request is supported by Audio class */
if ((app_usbd_setup_req_rec(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQREC_INTERFACE)
&&
(p_setup_ev->setup.bRequest == APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR))
{
size_t dsc_len = 0;
size_t max_size;
uint8_t * p_trans_buff = app_usbd_core_setup_transfer_buff_get(&max_size);
/* Try to find descriptor in class internals*/
ret_code_t ret = app_usbd_class_descriptor_find(
p_inst,
p_setup_ev->setup.wValue.hb,
p_setup_ev->setup.wValue.lb,
p_trans_buff,
&dsc_len);
if (ret != NRF_ERROR_NOT_FOUND)
{
ASSERT(dsc_len < NRF_DRV_USBD_EPSIZE);
return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_trans_buff, dsc_len);
}
}
return NRF_ERROR_NOT_SUPPORTED;
}
/**
* @brief Internal SETUP standard IN request handler.
*
* @param[in] p_inst Generic class instance.
* @param[in] p_setup_ev Setup event.
*
* @return Standard error code.
*/
static ret_code_t setup_req_std_in(app_usbd_class_inst_t const * p_inst,
app_usbd_setup_evt_t const * p_setup_ev)
{
switch (p_setup_ev->setup.bmRequest)
{
case APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR:
{
size_t dsc_len = 0;
/* Try to find descriptor in class internals*/
void const * p_dsc = app_usbd_class_descriptor_find(p_inst,
p_setup_ev->setup.wValue.hb,
p_setup_ev->setup.wValue.lb,
&dsc_len);
if (p_dsc != NULL)
{
return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_dsc, dsc_len);
}
break;
}
default:
break;
}
return NRF_ERROR_NOT_SUPPORTED;
}
/**
* @brief Internal SETUP standard IN request handler.
*
* @param[in] p_inst Generic class instance.
* @param[in] p_setup_ev Setup event.
*
* @return Standard error code.
*/
static ret_code_t setup_req_std_in(app_usbd_class_inst_t const * p_inst,
app_usbd_setup_evt_t const * p_setup_ev)
{
switch (p_setup_ev->setup.bmRequest)
{
case APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR:
{
size_t dsc_len = 0;
/* Try to find descriptor in class internals*/
void const * p_dsc = app_usbd_class_descriptor_find(p_inst,
p_setup_ev->setup.wValue.hb,
p_setup_ev->setup.wValue.lb,
&dsc_len);
if (p_dsc != NULL)
{
return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_dsc, dsc_len);
}
break;
}
case APP_USBD_SETUP_STDREQ_GET_INTERFACE:
{
size_t tx_maxsize;
uint8_t * p_tx_buff = app_usbd_core_setup_transfer_buff_get(&tx_maxsize);
p_tx_buff[0] = 0;
return app_usbd_core_setup_rsp(&p_setup_ev->setup,
p_tx_buff,
sizeof(uint8_t));
}
default:
break;
}
return NRF_ERROR_NOT_SUPPORTED;
}
