391 lines
8.7 KiB
C
391 lines
8.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_usb_lld.c
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* @brief PLATFORM USB subsystem low level driver source.
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*
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* @addtogroup USB
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* @{
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*/
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#include "hal.h"
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#if (HAL_USE_USB == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/**
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* @brief USB1 driver identifier.
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*/
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#if (PLATFORM_USB_USE_USB1 == TRUE) || defined(__DOXYGEN__)
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USBDriver USBD1;
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#endif
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/**
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* @brief EP0 state.
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* @note It is an union because IN and OUT endpoints are never used at the
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* same time for EP0.
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*/
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static union {
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/**
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* @brief IN EP0 state.
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*/
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USBInEndpointState in;
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/**
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* @brief OUT EP0 state.
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*/
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USBOutEndpointState out;
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} ep0_state;
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/**
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* @brief EP0 initialization structure.
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*/
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static const USBEndpointConfig ep0config = {
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USB_EP_MODE_TYPE_CTRL,
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_usb_ep0setup,
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_usb_ep0in,
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_usb_ep0out,
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0x40,
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0x40,
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&ep0_state.in,
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&ep0_state.out
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};
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers and threads. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level USB driver initialization.
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*
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* @notapi
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*/
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void usb_lld_init(void) {
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#if PLATFORM_USB_USE_USB1 == TRUE
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/* Driver initialization.*/
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usbObjectInit(&USBD1);
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#endif
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}
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/**
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* @brief Configures and activates the USB peripheral.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @notapi
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*/
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void usb_lld_start(USBDriver *usbp) {
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if (usbp->state == USB_STOP) {
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/* Enables the peripheral.*/
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#if PLATFORM_USB_USE_USB1 == TRUE
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if (&USBD1 == usbp) {
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}
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#endif
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}
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/* Configures the peripheral.*/
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}
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/**
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* @brief Deactivates the USB peripheral.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @notapi
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*/
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void usb_lld_stop(USBDriver *usbp) {
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if (usbp->state == USB_READY) {
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/* Resets the peripheral.*/
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/* Disables the peripheral.*/
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#if PLATFORM_USB_USE_USB1 == TRUE
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if (&USBD1 == usbp) {
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}
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#endif
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}
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}
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/**
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* @brief USB low level reset routine.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @notapi
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*/
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void usb_lld_reset(USBDriver *usbp) {
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/* Post reset initialization.*/
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/* EP0 initialization.*/
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usbp->epc[0] = &ep0config;
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usb_lld_init_endpoint(usbp, 0);
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}
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/**
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* @brief Sets the USB address.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @notapi
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*/
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void usb_lld_set_address(USBDriver *usbp) {
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(void)usbp;
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}
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/**
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* @brief Enables an endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_init_endpoint(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Disables all the active endpoints except the endpoint zero.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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*
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* @notapi
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*/
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void usb_lld_disable_endpoints(USBDriver *usbp) {
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(void)usbp;
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}
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/**
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* @brief Returns the status of an OUT endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @return The endpoint status.
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* @retval EP_STATUS_DISABLED The endpoint is not active.
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* @retval EP_STATUS_STALLED The endpoint is stalled.
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* @retval EP_STATUS_ACTIVE The endpoint is active.
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*
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* @notapi
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*/
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usbepstatus_t usb_lld_get_status_out(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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return EP_STATUS_DISABLED;
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}
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/**
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* @brief Returns the status of an IN endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @return The endpoint status.
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* @retval EP_STATUS_DISABLED The endpoint is not active.
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* @retval EP_STATUS_STALLED The endpoint is stalled.
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* @retval EP_STATUS_ACTIVE The endpoint is active.
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*
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* @notapi
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*/
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usbepstatus_t usb_lld_get_status_in(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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return EP_STATUS_DISABLED;
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}
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/**
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* @brief Reads a setup packet from the dedicated packet buffer.
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* @details This function must be invoked in the context of the @p setup_cb
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* callback in order to read the received setup packet.
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* @pre In order to use this function the endpoint must have been
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* initialized as a control endpoint.
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* @post The endpoint is ready to accept another packet.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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* @param[out] buf buffer where to copy the packet data
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*
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* @notapi
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*/
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void usb_lld_read_setup(USBDriver *usbp, usbep_t ep, uint8_t *buf) {
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(void)usbp;
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(void)ep;
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(void)buf;
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}
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/**
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* @brief Prepares for a receive operation.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_prepare_receive(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Prepares for a transmit operation.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_prepare_transmit(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Starts a receive operation on an OUT endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_start_out(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Starts a transmit operation on an IN endpoint.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_start_in(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Brings an OUT endpoint in the stalled state.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_stall_out(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Brings an IN endpoint in the stalled state.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_stall_in(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Brings an OUT endpoint in the active state.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_clear_out(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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/**
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* @brief Brings an IN endpoint in the active state.
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*
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* @param[in] usbp pointer to the @p USBDriver object
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* @param[in] ep endpoint number
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*
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* @notapi
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*/
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void usb_lld_clear_in(USBDriver *usbp, usbep_t ep) {
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(void)usbp;
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(void)ep;
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}
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#endif /* HAL_USE_USB == TRUE */
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/** @} */
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