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|
/**
**************************************************************************
* @file usbd_sdr.c
* @brief usb standard device request
**************************************************************************
* Copyright notice & Disclaimer
*
* The software Board Support Package (BSP) that is made available to
* download from Artery official website is the copyrighted work of Artery.
* Artery authorizes customers to use, copy, and distribute the BSP
* software and its related documentation for the purpose of design and
* development in conjunction with Artery microcontrollers. Use of the
* software is governed by this copyright notice and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
* GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
* TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
* STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
* INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
*
**************************************************************************
*/
#include "usbd_sdr.h"
/** @defgroup USBD_drivers_standard_request
* @brief usb device standard_request
* @{
*/
/** @defgroup USBD_sdr_private_functions
* @{
*/
static usb_sts_type usbd_get_descriptor(usbd_core_type *udev);
static usb_sts_type usbd_set_address(usbd_core_type *udev);
static usb_sts_type usbd_get_status(usbd_core_type *udev);
static usb_sts_type usbd_clear_feature(usbd_core_type *udev);
static usb_sts_type usbd_set_feature(usbd_core_type *udev);
static usb_sts_type usbd_get_configuration(usbd_core_type *udev);
static usb_sts_type usbd_set_configuration(usbd_core_type *udev);
/**
* @brief usb parse standard setup request
* @param setup: setup structure
* @param buf: setup buffer
* @retval none
*/
void usbd_setup_request_parse(usb_setup_type *setup, uint8_t *buf)
{
setup->bmRequestType = *(uint8_t *) buf;
setup->bRequest = *(uint8_t *) (buf + 1);
setup->wValue = SWAPBYTE(buf + 2);
setup->wIndex = SWAPBYTE(buf + 4);
setup->wLength = SWAPBYTE(buf + 6);
}
/**
* @brief get usb standard device description request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_get_descriptor(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
uint16_t len = 0;
uint8_t desc_type = udev->setup.wValue >> 8;
usbd_desc_t *desc = NULL, usbd_desc =
{
.length = 0xA,
.descriptor = NULL,
};
switch(desc_type)
{
case USB_DESCIPTOR_TYPE_DEVICE:
case USB_DESCIPTOR_TYPE_CONFIGURATION:
desc = &usbd_desc;
break;
case USB_DESCIPTOR_TYPE_STRING:
{
uint8_t str_desc = (uint8_t)udev->setup.wValue;
switch(str_desc)
{
case USB_LANGID_STRING:
case USB_MFC_STRING:
case USB_PRODUCT_STRING:
case USB_SERIAL_STRING:
case USB_CONFIG_STRING:
case USB_INTERFACE_STRING:
desc = &usbd_desc;
break;
default:
usbd_ctrl_send(udev, desc->descriptor, len);
return ret;
}
break;
}
case USB_DESCIPTOR_TYPE_DEVICE_QUALIFIER:
usbd_ctrl_unsupport(udev);
break;
case USB_DESCIPTOR_TYPE_OTHER_SPEED:
usbd_ctrl_unsupport(udev);
return ret;
default:
usbd_ctrl_unsupport(udev);
return ret;
}
if(desc != NULL)
{
if((desc->length != 0) && (udev->setup.wLength != 0))
{
len = MIN(desc->length , udev->setup.wLength);
usbd_ctrl_send(udev, desc->descriptor, len);
}
}
return ret;
}
/**
* @brief this request sets the device address
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_set_address(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
uint8_t dev_addr;
/* if wIndex or wLength are non-zero, then the behavior of
the device is not specified
*/
if(setup->wIndex == 0 && setup->wLength == 0)
{
dev_addr = (uint8_t)(setup->wValue) & 0x7f;
/* device behavior when this request is received
while the device is in the configured state is not specified.*/
if(udev->conn_state == USB_CONN_STATE_CONFIGURED )
{
usbd_ctrl_unsupport(udev);
}
else
{
udev->device_addr = dev_addr;
if(dev_addr != 0)
{
udev->conn_state = USB_CONN_STATE_ADDRESSED;
}
else
{
udev->conn_state = USB_CONN_STATE_DEFAULT;
}
usbd_ctrl_send_status(udev);
}
}
else
{
usbd_ctrl_unsupport(udev);
}
return ret;
}
/**
* @brief get usb status request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_get_status(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
case USB_CONN_STATE_CONFIGURED:
if(udev->remote_wakup)
{
udev->config_status |= USB_CONF_REMOTE_WAKEUP;
}
usbd_ctrl_send(udev, (uint8_t *)(&udev->config_status), 2);
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
return ret;
}
/**
* @brief clear usb feature request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_clear_feature(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
case USB_CONN_STATE_CONFIGURED:
if(setup->wValue == USB_FEATURE_REMOTE_WAKEUP)
{
udev->remote_wakup = 0;
udev->config_status &= ~USB_CONF_REMOTE_WAKEUP;
usbd_ctrl_send_status(udev);
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
return ret;
}
/**
* @brief set usb feature request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_set_feature(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
if(setup->wValue == USB_FEATURE_REMOTE_WAKEUP)
{
udev->remote_wakup = 1;
usbd_ctrl_send_status(udev);
}
return ret;
}
/**
* @brief get usb configuration request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_get_configuration(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
if(setup->wLength != 1)
{
usbd_ctrl_unsupport(udev);
}
else
{
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
udev->default_config = 0;
usbd_ctrl_send(udev, (uint8_t *)(&udev->default_config), 1);
break;
case USB_CONN_STATE_CONFIGURED:
usbd_ctrl_send(udev, (uint8_t *)(&udev->dev_config), 1);
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
}
return ret;
}
/**
* @brief sets the usb device configuration request
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
static usb_sts_type usbd_set_configuration(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
static uint8_t config_value;
usb_setup_type *setup = &udev->setup;
config_value = (uint8_t)setup->wValue;
if(setup->wIndex == 0 && setup->wLength == 0)
{
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
if(config_value)
{
udev->dev_config = config_value;
udev->conn_state = USB_CONN_STATE_CONFIGURED;
usbd_ctrl_send_status(udev);
}
else
{
usbd_ctrl_send_status(udev);
}
break;
case USB_CONN_STATE_CONFIGURED:
if(config_value == 0)
{
udev->conn_state = USB_CONN_STATE_ADDRESSED;
udev->dev_config = config_value;
usbd_ctrl_send_status(udev);
}
else if(config_value == udev->dev_config)
{
udev->dev_config = config_value;
usbd_ctrl_send_status(udev);
}
else
{
usbd_ctrl_send_status(udev);
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
}
else
{
usbd_ctrl_unsupport(udev);
}
return ret;
}
/**
* @brief standard usb device requests
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
usb_sts_type usbd_device_request(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
if((setup->bmRequestType & USB_REQ_TYPE_RESERVED) != USB_REQ_TYPE_STANDARD)
{
udev->class_handler->setup_handler(udev, &udev->setup);
return ret;
}
switch(udev->setup.bRequest)
{
case USB_STD_REQ_GET_STATUS:
usbd_get_status(udev);
break;
case USB_STD_REQ_CLEAR_FEATURE:
usbd_clear_feature(udev);
break;
case USB_STD_REQ_SET_FEATURE:
usbd_set_feature(udev);
break;
case USB_STD_REQ_SET_ADDRESS:
usbd_set_address(udev);
break;
case USB_STD_REQ_GET_DESCRIPTOR:
usbd_get_descriptor(udev);
break;
case USB_STD_REQ_GET_CONFIGURATION:
usbd_get_configuration(udev);
break;
case USB_STD_REQ_SET_CONFIGURATION:
usbd_set_configuration(udev);
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
return ret;
}
/**
* @brief standard usb interface requests
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
usb_sts_type usbd_interface_request(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
switch(udev->conn_state)
{
case USB_CONN_STATE_CONFIGURED:
switch(setup->bmRequestType & USB_REQ_TYPE_RESERVED)
{
case USB_REQ_TYPE_CLASS:
if(setup->wLength)
{
if(setup->bmRequestType & USB_REQ_DIR_DTH)
{
USB_SET_RXSTS((udev->ept_in[0].ept_address & 0x7F), USB_RX_VALID);
}
else
{
usbd_ept_send(udev, 0, 0, 0);
USB_SET_TXSTS((udev->ept_in[0].ept_address & 0x7F), USB_TX_VALID);
}
}
default:
break;
}
if(setup->wLength == 0)
{
usbd_ctrl_send_status(udev);
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
return ret;
}
/**
* @brief standard usb endpoint requests
* @param udev: to the structure of usbd_core_type
* @retval status of usb_sts_type
*/
usb_sts_type usbd_endpoint_request(usbd_core_type *udev)
{
usb_sts_type ret = USB_OK;
usb_setup_type *setup = &udev->setup;
uint8_t ept_addr = LBYTE(setup->wIndex);
usb_ept_info *ept_info;
if((setup->bmRequestType & USB_REQ_TYPE_RESERVED) == USB_REQ_TYPE_CLASS)
{
udev->class_handler->setup_handler(udev, &udev->setup);
}
switch(setup->bRequest)
{
case USB_STD_REQ_GET_STATUS:
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
if((ept_addr & 0x7F) != 0)
{
usbd_set_stall(udev, ept_addr);
}
break;
case USB_CONN_STATE_CONFIGURED:
{
if((ept_addr & 0x80) != 0)
{
ept_info = &udev->ept_in[ept_addr & 0x7F];
}
else
{
ept_info = &udev->ept_out[ept_addr & 0x7F];
}
if(ept_info->stall == 1)
{
ept_info->status = 0x0001;
}
else
{
ept_info->status = 0x0000;
}
usbd_ctrl_send(udev, (uint8_t *)(&ept_info->status), 2);
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
break;
case USB_STD_REQ_CLEAR_FEATURE:
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
if((ept_addr != 0x00) && (ept_addr != 0x80))
{
usbd_set_stall(udev, ept_addr);
}
break;
case USB_CONN_STATE_CONFIGURED:
if(setup->wValue == USB_FEATURE_EPT_HALT)
{
if((ept_addr & 0x7F) != 0x00 )
{
usbd_clear_stall(udev, ept_addr);
udev->class_handler->setup_handler(udev, &udev->setup);
}
usbd_ctrl_send_status(udev);
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
break;
case USB_STD_REQ_SET_FEATURE:
switch(udev->conn_state)
{
case USB_CONN_STATE_ADDRESSED:
if((ept_addr != 0x00) && (ept_addr != 0x80))
{
usbd_set_stall(udev, ept_addr);
}
break;
case USB_CONN_STATE_CONFIGURED:
if(setup->wValue == USB_FEATURE_EPT_HALT)
{
if((ept_addr != 0x00) && (ept_addr != 0x80))
{
usbd_set_stall(udev, ept_addr);
}
}
udev->class_handler->setup_handler(udev, &udev->setup);
usbd_ctrl_send_status(udev);
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
break;
default:
usbd_ctrl_unsupport(udev);
break;
}
return ret;
}
/**
* @}
*/
/**
* @}
*/
|
