/**
* @brief Triggers IN endpoint transfer.
*
* @param[in] p_kbd HID keyboard instance.
*
* @return Standard error code.
*/
static inline ret_code_t hid_kbd_transfer_set(app_usbd_hid_kbd_t const * p_kbd)
{
app_usbd_class_inst_t const * p_inst = (app_usbd_class_inst_t const *)p_kbd;
app_usbd_hid_kbd_ctx_t * p_kbd_ctx = hid_kbd_ctx_get(p_kbd);
nrf_drv_usbd_ep_t ep_addr = app_usbd_hid_epin_addr_get(p_inst);
app_usbd_hid_state_flag_clr(&p_kbd_ctx->hid_ctx, APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
if (!hid_kbd_transfer_next(p_kbd))
{
/* Transfer buffer hasn't changed since last transfer. No need to setup
* next transfer.
* */
return NRF_SUCCESS;
}
app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_kbd_rep_buffer_get(p_kbd);
NRF_DRV_USBD_TRANSFER_IN(transfer, p_rep_buffer->p_buff, p_rep_buffer->size);
ret_code_t ret;
CRITICAL_REGION_ENTER();
ret = app_usbd_core_ep_transfer(ep_addr, &transfer);
if (ret == NRF_SUCCESS)
{
app_usbd_hid_state_flag_set(&p_kbd_ctx->hid_ctx, APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
}
CRITICAL_REGION_EXIT();
return ret;
}
ret_code_t app_usbd_audio_class_tx_start(
app_usbd_class_inst_t const * p_inst,
const void * p_buff,
size_t size)
{
nrf_drv_usbd_ep_t ep_addr;
ep_addr = ep_iso_addr_get(p_inst);
ASSERT(NRF_USBD_EPISO_CHECK(ep_addr));
NRF_DRV_USBD_TRANSFER_IN(transfer, p_buff, size);
return app_usbd_ep_transfer(ep_addr, &transfer);
}
ret_code_t app_usbd_cdc_acm_write(app_usbd_cdc_acm_t const * p_cdc_acm,
const void * p_buf,
size_t length)
{
app_usbd_class_inst_t const * p_inst = app_usbd_cdc_acm_class_inst_get(p_cdc_acm);
app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
bool dtr_state = (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR) ?
true : false;
if (!dtr_state)
{
/*Port is not opened*/
return NRF_ERROR_INVALID_STATE;
}
nrf_drv_usbd_ep_t ep = data_ep_in_addr_get(p_inst);
NRF_DRV_USBD_TRANSFER_IN(transfer, p_buf, length);
return app_usbd_ep_transfer(ep, &transfer);
}