621 lines
23 KiB
C
621 lines
23 KiB
C
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/*!
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\file usbh_ctrl.c
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\brief this file implements the functions for the control transmit process
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-08-15, V1.0.0, firmware for GD32F4xx
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*/
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#include "usbh_core.h"
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#include "usbh_std.h"
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#include "usbh_ctrl.h"
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uint8_t ctrl_polling_handle_flag = 0U;
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uint8_t ctrl_setup_wait_flag = 0U;
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uint8_t ctrl_data_wait_flag = 0U;
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uint8_t ctrl_status_wait_flag = 0U;
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static uint16_t timeout = 0U;
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static void ctrl_idle_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_setup_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_data_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_status_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_error_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_stalled_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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static void ctrl_complete_handle (usb_core_handle_struct *pudev, usbh_host_struct *puhost, usbh_state_handle_struct *pustate);
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/* the ctrl state handle function array */
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void (*ctrl_state_handle[]) (usb_core_handle_struct *pudev,
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usbh_host_struct *puhost,
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usbh_state_handle_struct *pustate) =
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{
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ctrl_idle_handle,
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ctrl_setup_handle,
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ctrl_data_handle,
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ctrl_status_handle,
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ctrl_error_handle,
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ctrl_stalled_handle,
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ctrl_complete_handle,
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};
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/* the ctrl state handle table */
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state_table_struct ctrl_handle_table[CTRL_HANDLE_TABLE_SIZE] =
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{
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/* the current state the current event the next state the event function */
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{CTRL_IDLE, CTRL_EVENT_SETUP, CTRL_SETUP, only_state_move },
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{CTRL_SETUP, CTRL_EVENT_DATA, CTRL_DATA, only_state_move },
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{CTRL_SETUP, CTRL_EVENT_STATUS, CTRL_STATUS, only_state_move },
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{CTRL_SETUP, CTRL_EVENT_ERROR, CTRL_ERROR, only_state_move },
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{CTRL_DATA, CTRL_EVENT_STATUS, CTRL_STATUS, only_state_move },
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{CTRL_DATA, CTRL_EVENT_ERROR, CTRL_ERROR, only_state_move },
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{CTRL_DATA, CTRL_EVENT_STALLED, CTRL_STALLED, only_state_move },
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{CTRL_STATUS, CTRL_EVENT_COMPLETE, CTRL_COMPLETE, only_state_move },
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{CTRL_STATUS, CTRL_EVENT_ERROR, CTRL_ERROR, only_state_move },
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{CTRL_STATUS, CTRL_EVENT_STALLED, CTRL_STALLED, only_state_move },
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{CTRL_ERROR, GO_TO_UP_STATE_EVENT, UP_STATE, goto_up_state_fun },
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{CTRL_STALLED, GO_TO_UP_STATE_EVENT, UP_STATE, goto_up_state_fun },
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{CTRL_COMPLETE, GO_TO_UP_STATE_EVENT, UP_STATE, goto_up_state_fun },
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};
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/*!
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\brief the polling function of CTRL state
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\param[in] pudev: pointer to usb device
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\param[in] puhost: pointer to usb host
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\param[in] pustate: pointer to usb state driver
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\param[out] none
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\retval none
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*/
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usbh_status_enum ctrl_state_polling_fun (usb_core_handle_struct *pudev,
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usbh_host_struct *puhost,
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void *pustate)
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{
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usbh_status_enum exe_state = USBH_BUSY;
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usbh_state_handle_struct *p_state;
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p_state = (usbh_state_handle_struct *)pustate;
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/* if first enter this function, begin the ctrl state */
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if (0U == ctrl_polling_handle_flag) {
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ctrl_polling_handle_flag = 1U;
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scd_table_push(p_state);
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scd_state_move(p_state, CTRL_IDLE);
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}
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/* base on the current state to handle the ctrl state */
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scd_begin(p_state, CTRL_FSM_ID);
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ctrl_state_handle[p_state->usbh_current_state](pudev, puhost, p_state);
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/* determine the control transfer whether to complete */
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switch (puhost->usbh_backup_state.ctrl_backup_state) {
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case CTRL_COMPLETE:
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ctrl_polling_handle_flag = 0U;
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_IDLE;
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exe_state = USBH_OK;
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break;
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case CTRL_STALLED:
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ctrl_polling_handle_flag = 0U;
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_IDLE;
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exe_state = USBH_NOT_SUPPORTED;
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break;
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case CTRL_ERROR:
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ctrl_polling_handle_flag = 0U;
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_IDLE;
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exe_state = USBH_FAIL;
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break;
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default:
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exe_state = USBH_BUSY;
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break;
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}
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return exe_state;
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}
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/*!
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\brief the handle function of CTRL_IDLE state
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\param[in] pudev: pointer to usb device
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\param[in] puhost: pointer to usb host
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\param[in] pustate: pointer to usb state driver
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\param[out] none
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\retval none
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*/
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static void ctrl_idle_handle (usb_core_handle_struct *pudev,
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usbh_host_struct *puhost,
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usbh_state_handle_struct *pustate)
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{
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_IDLE;
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scd_event_handle(pudev, puhost, pustate, CTRL_EVENT_SETUP, pustate->usbh_current_state);
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}
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/*!
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\brief the handle function of CTRL_SETUP state
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\param[in] pudev: pointer to usb device
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\param[in] puhost: pointer to usb host
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\param[in] pustate: pointer to usb state driver
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\param[out] none
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\retval none
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*/
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static void ctrl_setup_handle (usb_core_handle_struct *pudev,
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usbh_host_struct *puhost,
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usbh_state_handle_struct *pustate)
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{
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urb_state_enum urb_status = URB_IDLE;
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_SETUP;
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if (0U == ctrl_setup_wait_flag) {
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ctrl_setup_wait_flag = 1U;
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/* send a setup packet */
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usbh_ctltx_setup (pudev,
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puhost->control.setup.data,
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puhost->control.hc_out_num);
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} else {
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urb_status = hcd_urb_state_get(pudev, puhost->control.hc_out_num);
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/* case setup packet sent successfully */
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if (URB_DONE == urb_status) {
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/* check if there is a data stage */
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if (0U != puhost->control.setup.b.wLength) {
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ctrl_setup_wait_flag = 0U;
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timeout = DATA_STAGE_TIMEOUT;
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scd_event_handle(pudev, puhost, pustate, CTRL_EVENT_DATA, pustate->usbh_current_state);
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/* no data stage */
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} else {
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timeout = NODATA_STAGE_TIMEOUT;
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ctrl_setup_wait_flag = 0U;
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_STATUS,
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pustate->usbh_current_state);
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}
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/* set the delay timer to enable timeout for data stage completion */
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puhost->control.timer = (uint16_t)USB_CURRENT_FRAME_GET();
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} else if (URB_ERROR == urb_status) {
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ctrl_setup_wait_flag = 0U;
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scd_event_handle(pudev, puhost, pustate, CTRL_EVENT_ERROR, pustate->usbh_current_state);
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} else {
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/* no operation */
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}
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}
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}
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/*!
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\brief the handle function of CTRL_DATA state
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\param[in] pudev: pointer to usb device
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\param[in] puhost: pointer to usb host
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\param[in] pustate: pointer to usb state driver
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\param[out] none
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\retval none
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*/
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static void ctrl_data_handle (usb_core_handle_struct *pudev,
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usbh_host_struct *puhost,
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usbh_state_handle_struct *pustate)
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{
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uint8_t direction;
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urb_state_enum urb_status = URB_IDLE;
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_DATA;
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direction = (puhost->control.setup.b.bmRequestType & USB_DIR_MASK);
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if (USB_DIR_IN == direction) {
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if (0U == ctrl_data_wait_flag) {
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ctrl_data_wait_flag = 1U;
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/* issue an IN token */
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usbh_xfer(pudev,
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puhost->control.buff,
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puhost->control.hc_in_num,
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puhost->control.length);
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} else {
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urb_status = hcd_urb_state_get(pudev, puhost->control.hc_in_num);
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/* check is data packet transfered successfully */
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switch (urb_status) {
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case URB_DONE:
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ctrl_data_wait_flag = 0U;
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_STATUS,
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pustate->usbh_current_state);
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break;
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case URB_STALL:
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ctrl_data_wait_flag = 0U;
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_STALLED,
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pustate->usbh_current_state);
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break;
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case URB_ERROR:
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ctrl_data_wait_flag = 0U;
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/* device error */
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_ERROR,
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pustate->usbh_current_state);
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break;
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default:
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if (((uint16_t)USB_CURRENT_FRAME_GET() - puhost->control.timer) > timeout) {
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ctrl_data_wait_flag = 0U;
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/* timeout for IN transfer */
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_ERROR,
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pustate->usbh_current_state);
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}
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break;
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}
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}
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} else {
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if (0U == ctrl_data_wait_flag) {
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ctrl_data_wait_flag = 1U;
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/* start DATA out transfer (only one DATA packet)*/
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pudev->host.host_channel[puhost->control.hc_out_num].data_tg_out = 1U;
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usbh_xfer(pudev,
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puhost->control.buff,
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puhost->control.hc_out_num,
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puhost->control.length);
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} else {
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urb_status = hcd_urb_state_get(pudev, puhost->control.hc_out_num);
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switch (urb_status) {
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case URB_DONE:
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ctrl_data_wait_flag = 0U;
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/* if the setup pkt is sent successful, then change the state */
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_STATUS,
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pustate->usbh_current_state);
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break;
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case URB_STALL:
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ctrl_data_wait_flag = 0U;
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_STALLED,
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pustate->usbh_current_state);
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break;
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case URB_NOTREADY:
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/* nack received from device */
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ctrl_data_wait_flag = 0U;
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break;
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case URB_ERROR:
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ctrl_data_wait_flag = 0U;
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/* device error */
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scd_event_handle(pudev,
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puhost,
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pustate,
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CTRL_EVENT_ERROR,
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pustate->usbh_current_state);
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break;
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default:
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break;
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}
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}
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}
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}
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|
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|
||
|
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/*!
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||
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\brief the handle function of CTRL_STATUS state
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||
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\param[in] pudev: pointer to usb device
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\param[in] puhost: pointer to usb host
|
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\param[in] pustate: pointer to usb state driver
|
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\param[out] none
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\retval none
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||
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*/
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||
|
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static void ctrl_status_handle (usb_core_handle_struct *pudev,
|
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|
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usbh_host_struct *puhost,
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usbh_state_handle_struct *pustate)
|
||
|
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{
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uint8_t direction;
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urb_state_enum urb_status = URB_IDLE;
|
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|
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puhost->usbh_backup_state.ctrl_backup_state = CTRL_STATUS;
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/* get the transfer direction in the data state, but the transfer direction in the status state is opposite */
|
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|
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direction = (puhost->control.setup.b.bmRequestType & USB_DIR_MASK);
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if (USB_DIR_OUT == direction) {
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|
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/* handle status in */
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||
|
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if (0U == ctrl_status_wait_flag) {
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|
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ctrl_status_wait_flag = 1U;
|
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|
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usbh_xfer (pudev, 0U, puhost->control.hc_in_num, 0U);
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|
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} else {
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urb_status = hcd_urb_state_get(pudev, puhost->control.hc_in_num);
|
||
|
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|
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|
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switch (urb_status) {
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||
|
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case URB_DONE:
|
||
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ctrl_status_wait_flag = 0U;
|
||
|
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|
||
|
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/* handle URB_DONE status */
|
||
|
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scd_event_handle(pudev,
|
||
|
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puhost,
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|
|
pustate,
|
||
|
|
CTRL_EVENT_COMPLETE,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
break;
|
||
|
|
case URB_ERROR:
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
|
||
|
|
/* handle URB_STALL status*/
|
||
|
|
scd_event_handle(pudev,
|
||
|
|
puhost,
|
||
|
|
pustate,
|
||
|
|
CTRL_EVENT_ERROR,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
break;
|
||
|
|
case URB_STALL:
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
|
||
|
|
/* handle URB_STALL status */
|
||
|
|
scd_event_handle(pudev,
|
||
|
|
puhost,
|
||
|
|
pustate,
|
||
|
|
CTRL_EVENT_STALLED,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (((uint16_t)USB_CURRENT_FRAME_GET() - puhost->control.timer) > timeout) {
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
|
||
|
|
/* handle timeout */
|
||
|
|
scd_event_handle(pudev,
|
||
|
|
puhost,
|
||
|
|
pustate,
|
||
|
|
CTRL_EVENT_ERROR,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* handle status out */
|
||
|
|
if (0U == ctrl_status_wait_flag) {
|
||
|
|
ctrl_status_wait_flag = 1U;
|
||
|
|
pudev->host.host_channel[puhost->control.hc_out_num].data_tg_out ^= 1U;
|
||
|
|
usbh_xfer (pudev, 0U, puhost->control.hc_out_num, 0U);
|
||
|
|
|
||
|
|
{
|
||
|
|
uint32_t host_ctlr = 0;
|
||
|
|
|
||
|
|
host_ctlr = USB_HCHxLEN(puhost->control.hc_out_num);
|
||
|
|
USB_HCHxLEN(puhost->control.hc_out_num) = host_ctlr | 1;
|
||
|
|
host_ctlr = USB_HCHxCTL(puhost->control.hc_out_num);
|
||
|
|
USB_HCHxCTL(puhost->control.hc_out_num) = (host_ctlr & 0x3FFFFFFF) | 0x80000000;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
urb_status = hcd_urb_state_get(pudev, puhost->control.hc_out_num);
|
||
|
|
|
||
|
|
switch (urb_status) {
|
||
|
|
case URB_DONE:
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
|
||
|
|
/* handle URB_DONE status */
|
||
|
|
scd_event_handle(pudev,
|
||
|
|
puhost,
|
||
|
|
pustate,
|
||
|
|
CTRL_EVENT_COMPLETE,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
break;
|
||
|
|
case URB_NOTREADY:
|
||
|
|
/* handle URB_NOTREADY status */
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
break;
|
||
|
|
case URB_ERROR:
|
||
|
|
ctrl_status_wait_flag = 0U;
|
||
|
|
|
||
|
|
/* handle URB_ERROR status */
|
||
|
|
scd_event_handle(pudev,
|
||
|
|
puhost,
|
||
|
|
pustate,
|
||
|
|
CTRL_EVENT_ERROR,
|
||
|
|
pustate->usbh_current_state);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief the handle function of CTRL_ERROR state
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] puhost: pointer to usb host
|
||
|
|
\param[in] pustate: pointer to usb state driver
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
static void ctrl_error_handle (usb_core_handle_struct *pudev,
|
||
|
|
usbh_host_struct *puhost,
|
||
|
|
usbh_state_handle_struct *pustate)
|
||
|
|
{
|
||
|
|
puhost->usbh_backup_state.ctrl_backup_state = CTRL_ERROR;
|
||
|
|
|
||
|
|
if (++puhost->control.error_count <= USBH_MAX_ERROR_COUNT) {
|
||
|
|
/* do the transmission again, starting from SETUP Packet */
|
||
|
|
scd_event_handle(pudev, puhost, pustate, CTRL_EVENT_SETUP, pustate->usbh_current_state);
|
||
|
|
} else {
|
||
|
|
scd_event_handle(pudev, puhost, pustate, GO_TO_UP_STATE_EVENT, pustate->usbh_current_state);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief the handle function of CTRL_STALLED state
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] puhost: pointer to usb host
|
||
|
|
\param[in] pustate: pointer to usb state driver
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
static void ctrl_stalled_handle (usb_core_handle_struct *pudev,
|
||
|
|
usbh_host_struct *puhost,
|
||
|
|
usbh_state_handle_struct *pustate)
|
||
|
|
{
|
||
|
|
puhost->usbh_backup_state.ctrl_backup_state = CTRL_STALLED;
|
||
|
|
scd_event_handle(pudev, puhost, pustate, GO_TO_UP_STATE_EVENT, pustate->usbh_current_state);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief the handle function of CTRL_COMPLETE state
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] puhost: pointer to usb host
|
||
|
|
\param[in] pustate: pointer to usb state driver
|
||
|
|
\param[out] none
|
||
|
|
\retval none
|
||
|
|
*/
|
||
|
|
static void ctrl_complete_handle (usb_core_handle_struct *pudev,
|
||
|
|
usbh_host_struct *puhost,
|
||
|
|
usbh_state_handle_struct *pustate)
|
||
|
|
{
|
||
|
|
puhost->usbh_backup_state.ctrl_backup_state = CTRL_COMPLETE;
|
||
|
|
scd_event_handle(pudev, puhost, pustate, GO_TO_UP_STATE_EVENT, pustate->usbh_current_state);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief send datas from the host channel
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] buf: data buffer address to send datas
|
||
|
|
\param[in] hc_num: the number of the host channel
|
||
|
|
\param[in] len: length of the send data
|
||
|
|
\param[out] none
|
||
|
|
\retval host operation status
|
||
|
|
*/
|
||
|
|
usbh_status_enum usbh_xfer (usb_core_handle_struct *pudev,
|
||
|
|
uint8_t *buf,
|
||
|
|
uint8_t hc_num,
|
||
|
|
uint16_t len)
|
||
|
|
{
|
||
|
|
usb_hostchannel_struct *puhc = &pudev->host.host_channel[hc_num];
|
||
|
|
|
||
|
|
puhc->xfer_buff = buf;
|
||
|
|
puhc->xfer_len = len;
|
||
|
|
|
||
|
|
switch (puhc->endp_type) {
|
||
|
|
case USB_EPTYPE_CTRL:
|
||
|
|
if (0U == puhc->endp_in) {
|
||
|
|
if (0U == len) {
|
||
|
|
/* for status out stage, length = 0, status out pid = 1 */
|
||
|
|
puhc->data_tg_out = 1U;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* set the data toggle bit as per the flag */
|
||
|
|
if (0U == puhc->data_tg_out) {
|
||
|
|
/* put the pid 0 */
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
} else {
|
||
|
|
/* put the pid 1 */
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case USB_EPTYPE_ISOC:
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case USB_EPTYPE_BULK:
|
||
|
|
if (0U == puhc->endp_in) {
|
||
|
|
/* set the data toggle bit as per the flag */
|
||
|
|
if (0U == puhc->data_tg_out) {
|
||
|
|
/* put the pid 0 */
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
} else {
|
||
|
|
/* put the pid 1 */
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (0U == puhc->data_tg_in) {
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
} else {
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case USB_EPTYPE_INTR:
|
||
|
|
if (0U == puhc->endp_in) {
|
||
|
|
if (0U == puhc->data_tg_out) {
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
} else {
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* toggle data pid */
|
||
|
|
puhc->data_tg_out ^= 1U;
|
||
|
|
} else {
|
||
|
|
if (0U == puhc->data_tg_in) {
|
||
|
|
puhc->DPID = HC_PID_DATA0;
|
||
|
|
} else {
|
||
|
|
puhc->DPID = HC_PID_DATA1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* toggle data pid */
|
||
|
|
puhc->data_tg_in ^= 1U;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
hcd_submit_request (pudev, hc_num);
|
||
|
|
|
||
|
|
return USBH_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief send the setup packet to the device
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] buf: buffer pointer from which the data will be send to device
|
||
|
|
\param[in] hc_num: host channel number
|
||
|
|
\param[out] none
|
||
|
|
\retval host operation status
|
||
|
|
*/
|
||
|
|
usbh_status_enum usbh_ctltx_setup (usb_core_handle_struct *pudev, uint8_t *buf, uint8_t hc_num)
|
||
|
|
{
|
||
|
|
usb_hostchannel_struct *puhc = &pudev->host.host_channel[hc_num];
|
||
|
|
|
||
|
|
puhc->DPID = HC_PID_SETUP;
|
||
|
|
puhc->xfer_buff = buf;
|
||
|
|
puhc->xfer_len = USBH_SETUP_PACKET_SIZE;
|
||
|
|
|
||
|
|
return (usbh_status_enum)hcd_submit_request (pudev, hc_num);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief this function prepare a hc and start a transfer
|
||
|
|
\param[in] pudev: pointer to usb device
|
||
|
|
\param[in] channel_num: host channel number which is in (0..7)
|
||
|
|
\param[out] none
|
||
|
|
\retval host operation status
|
||
|
|
*/
|
||
|
|
uint32_t hcd_submit_request (usb_core_handle_struct *pudev, uint8_t channel_num)
|
||
|
|
{
|
||
|
|
usb_hostchannel_struct *puhc = &pudev->host.host_channel[channel_num];
|
||
|
|
|
||
|
|
puhc->urb_state = URB_IDLE;
|
||
|
|
puhc->xfer_count = 0U;
|
||
|
|
|
||
|
|
return (uint32_t)usb_hostchannel_startxfer(pudev, channel_num);
|
||
|
|
}
|