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stm32f0xx_hal_pcd.c
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/**
******************************************************************************
* @file stm32f0xx_hal_pcd.c
* @author MCD Application Team
* @version V1.2.1
* @date 09-January-2015
* @brief PCD HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the USB Peripheral Controller:
* + Initialization and de-initialization functions
* + IO operation functions
* + Peripheral Control functions
* + Peripheral State functions
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The PCD HAL driver can be used as follows:
(#) Declare a PCD_HandleTypeDef handle structure, for example:
PCD_HandleTypeDef hpcd;
(#) Fill parameters of Init structure in HCD handle
(#) Call HAL_PCD_Init() API to initialize the HCD peripheral (Core, Device core, ...)
(#) Initialize the PCD low level resources through the HAL_PCD_MspInit() API:
(##) Enable the PCD/USB Low Level interface clock using
(+++) __USB_CLK_ENABLE);
(##) Initialize the related GPIO clocks
(##) Configure PCD pin-out
(##) Configure PCD NVIC interrupt
(#)Associate the Upper USB device stack to the HAL PCD Driver:
(##) hpcd.pData = pdev;
(#)Enable HCD transmission and reception:
(##) HAL_PCD_Start();
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"
#ifdef HAL_PCD_MODULE_ENABLED
#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || defined(STM32F070xB)|| defined(STM32F070x6)
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
/** @defgroup PCD PCD HAL module driver
* @brief PCD HAL module driver
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup PCD_Private_Define PCD Private Define
* @{
*/
#define BTABLE_ADDRESS (0x000)
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup PCD_Private_Functions PCD Private Functions
* @{
*/
static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd);
void PCD_WritePMA(USB_TypeDef *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
void PCD_ReadPMA(USB_TypeDef *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
/**
* @}
*/
/* Exported functions ---------------------------------------------------------*/
/** @defgroup PCD_Exported_Functions PCD Exported Functions
* @{
*/
/** @defgroup PCD_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..] This section provides functions allowing to:
@endverbatim
* @{
*/
/**
* @brief Initializes the PCD according to the specified
* parameters in the PCD_InitTypeDef and create the associated handle.
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd)
{
uint32_t i = 0;
uint32_t wInterrupt_Mask = 0;
/* Check the PCD handle allocation */
if(hpcd == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance));
hpcd->State = PCD_BUSY;
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
HAL_PCD_MspInit(hpcd);
/* Init endpoints structures */
for (i = 0; i < (sizeof(hpcd->IN_ep) / sizeof(*hpcd->IN_ep)); i++)
{
/* Init ep structure */
hpcd->IN_ep[i].is_in = 1;
hpcd->IN_ep[i].num = i;
/* Control until ep is activated */
hpcd->IN_ep[i].type = PCD_EP_TYPE_CTRL;
hpcd->IN_ep[i].maxpacket = 0;
hpcd->IN_ep[i].xfer_buff = 0;
hpcd->IN_ep[i].xfer_len = 0;
}
for (i = 0; i < (sizeof(hpcd->OUT_ep) / sizeof(*hpcd->OUT_ep)); i++)
{
hpcd->OUT_ep[i].is_in = 0;
hpcd->OUT_ep[i].num = i;
/* Control until ep is activated */
hpcd->OUT_ep[i].type = PCD_EP_TYPE_CTRL;
hpcd->OUT_ep[i].maxpacket = 0;
hpcd->OUT_ep[i].xfer_buff = 0;
hpcd->OUT_ep[i].xfer_len = 0;
}
/* Init Device */
/*CNTR_FRES = 1*/
hpcd->Instance->CNTR = USB_CNTR_FRES;
/*CNTR_FRES = 0*/
hpcd->Instance->CNTR = 0;
/*Clear pending interrupts*/
hpcd->Instance->ISTR = 0;
/*Set Btable Adress*/
hpcd->Instance->BTABLE = BTABLE_ADDRESS;
/*set wInterrupt_Mask global variable*/
wInterrupt_Mask = USB_CNTR_CTRM | USB_CNTR_WKUPM | USB_CNTR_SUSPM | USB_CNTR_ERRM \
| USB_CNTR_ESOFM | USB_CNTR_RESETM | USB_CNTR_SOFM;
/*Set interrupt mask*/
hpcd->Instance->CNTR = wInterrupt_Mask;
hpcd->USB_Address = 0;
hpcd->State= PCD_READY;
return HAL_OK;
}
/**
* @brief DeInitializes the PCD peripheral
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_DeInit(PCD_HandleTypeDef *hpcd)
{
/* Check the PCD handle allocation */
if(hpcd == NULL)
{
return HAL_ERROR;
}
hpcd->State = PCD_BUSY;
/* Stop Device */
HAL_PCD_Stop(hpcd);
/* DeInit the low level hardware */
HAL_PCD_MspDeInit(hpcd);
hpcd->State = PCD_READY;
return HAL_OK;
}
/**
* @brief Initializes the PCD MSP.
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_MspInit could be implemented in the user file
*/
}
/**
* @brief DeInitializes PCD MSP.
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_MspDeInit could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup PCD_Exported_Functions_Group2 IO operation functions
* @brief Data transfers functions
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to manage the PCD data
transfers.
@endverbatim
* @{
*/
/**
* @brief Start The USB OTG Device.
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd)
{
/* Enabling DP Pull-Down bit to Connect internal pull-up on USB DP line */
hpcd->Instance->BCDR |= USB_BCDR_DPPU;
return HAL_OK;
}
/**
* @brief Stop The USB OTG Device.
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd)
{
__HAL_LOCK(hpcd);
/* disable all interrupts and force USB reset */
hpcd->Instance->CNTR = USB_CNTR_FRES;
/* clear interrupt status register */
hpcd->Instance->ISTR = 0;
/* switch-off device */
hpcd->Instance->CNTR = (USB_CNTR_FRES | USB_CNTR_PDWN);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup PCD_Private_Functions PCD Private Functions
* @{
*/
/**
* @brief This function handles PCD Endpoint interrupt request.
* @param hpcd: PCD handle
* @retval HAL status
*/
static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd)
{
PCD_EPTypeDef *ep;
uint16_t count=0;
uint8_t EPindex;
__IO uint16_t wIstr;
__IO uint16_t wEPVal = 0;
/* stay in loop while pending interrupts */
while (((wIstr = hpcd->Instance->ISTR) & USB_ISTR_CTR) != 0)
{
/* extract highest priority endpoint number */
EPindex = (uint8_t)(wIstr & USB_ISTR_EP_ID);
if (EPindex == 0)
{
/* Decode and service control endpoint interrupt */
/* DIR bit = origin of the interrupt */
if ((wIstr & USB_ISTR_DIR) == 0)
{
/* DIR = 0 */
/* DIR = 0 => IN int */
/* DIR = 0 implies that (EP_CTR_TX = 1) always */
PCD_CLEAR_TX_EP_CTR(hpcd->Instance, PCD_ENDP0);
ep = &hpcd->IN_ep[0];
ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
ep->xfer_buff += ep->xfer_count;
/* TX COMPLETE */
HAL_PCD_DataInStageCallback(hpcd, 0);
if((hpcd->USB_Address > 0)&& ( ep->xfer_len == 0))
{
hpcd->Instance->DADDR = (hpcd->USB_Address | USB_DADDR_EF);
hpcd->USB_Address = 0;
}
}
else
{
/* DIR = 1 */
/* DIR = 1 & CTR_RX => SETUP or OUT int */
/* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */
ep = &hpcd->OUT_ep[0];
wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, PCD_ENDP0);
if ((wEPVal & USB_EP_SETUP) != 0)
{
/* Get SETUP Packet*/
ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
PCD_ReadPMA(hpcd->Instance, (uint8_t*)hpcd->Setup ,ep->pmaadress , ep->xfer_count);
/* SETUP bit kept frozen while CTR_RX = 1*/
PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0);
/* Process SETUP Packet*/
HAL_PCD_SetupStageCallback(hpcd);
}
else if ((wEPVal & USB_EP_CTR_RX) != 0)
{
PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0);
/* Get Control Data OUT Packet*/
ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
if (ep->xfer_count != 0)
{
PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count);
ep->xfer_buff+=ep->xfer_count;
}
/* Process Control Data OUT Packet*/
HAL_PCD_DataOutStageCallback(hpcd, 0);
PCD_SET_EP_RX_CNT(hpcd->Instance, PCD_ENDP0, ep->maxpacket);
PCD_SET_EP_RX_STATUS(hpcd->Instance, PCD_ENDP0, USB_EP_RX_VALID);
}
}
}
else
{
/* Decode and service non control endpoints interrupt */
/* process related endpoint register */
wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, EPindex);
if ((wEPVal & USB_EP_CTR_RX) != 0)
{
/* clear int flag */
PCD_CLEAR_RX_EP_CTR(hpcd->Instance, EPindex);
ep = &hpcd->OUT_ep[EPindex];
/* OUT double Buffering*/
if (ep->doublebuffer == 0)
{
count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
if (count != 0)
{
PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, count);
}
}
else
{
if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_RX)
{
/*read from endpoint BUF0Addr buffer*/
count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
if (count != 0)
{
PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, count);
}
}
else
{
/*read from endpoint BUF1Addr buffer*/
count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
if (count != 0)
{
PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, count);
}
}
PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_EP_DBUF_OUT);
}
/*multi-packet on the NON control OUT endpoint*/
ep->xfer_count+=count;
ep->xfer_buff+=count;
if ((ep->xfer_len == 0) || (count < ep->maxpacket))
{
/* RX COMPLETE */
HAL_PCD_DataOutStageCallback(hpcd, ep->num);
}
else
{
HAL_PCD_EP_Receive(hpcd, ep->num, ep->xfer_buff, ep->xfer_len);
}
} /* if((wEPVal & EP_CTR_RX) */
if ((wEPVal & USB_EP_CTR_TX) != 0)
{
ep = &hpcd->IN_ep[EPindex];
/* clear int flag */
PCD_CLEAR_TX_EP_CTR(hpcd->Instance, EPindex);
/* IN double Buffering*/
if (ep->doublebuffer == 0)
{
ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
if (ep->xfer_count != 0)
{
PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count);
}
}
else
{
if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_TX)
{
/*read from endpoint BUF0Addr buffer*/
ep->xfer_count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
if (ep->xfer_count != 0)
{
PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, ep->xfer_count);
}
}
else
{
/*read from endpoint BUF1Addr buffer*/
ep->xfer_count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
if (ep->xfer_count != 0)
{
PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, ep->xfer_count);
}
}
PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_EP_DBUF_IN);
}
/*multi-packet on the NON control IN endpoint*/
ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
ep->xfer_buff+=ep->xfer_count;
/* Zero Length Packet? */
if (ep->xfer_len == 0)
{
/* TX COMPLETE */
HAL_PCD_DataInStageCallback(hpcd, ep->num);
}
else
{
HAL_PCD_EP_Transmit(hpcd, ep->num, ep->xfer_buff, ep->xfer_len);
}
}
}
}
return HAL_OK;
}
/**
* @}
*/
/** @addtogroup PCD_Exported_Functions
* @{
*/
/** @defgroup PCD_Exported_Functions_Group2 IO operation functions
* @{
*/
/**
* @brief This function handles PCD interrupt request.
* @param hpcd: PCD handle
* @retval HAL status
*/
void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
{
uint32_t wInterrupt_Mask = 0;
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_CTR))
{
/* servicing of the endpoint correct transfer interrupt */
/* clear of the CTR flag into the sub */
PCD_EP_ISR_Handler(hpcd);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_RESET))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_RESET);
HAL_PCD_ResetCallback(hpcd);
HAL_PCD_SetAddress(hpcd, 0);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_PMAOVR))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_PMAOVR);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_ERR))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_ERR);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_WKUP))
{
hpcd->Instance->CNTR &= ~(USB_CNTR_LPMODE);
/*set wInterrupt_Mask global variable*/
wInterrupt_Mask = USB_CNTR_CTRM | USB_CNTR_WKUPM | USB_CNTR_SUSPM | USB_CNTR_ERRM \
| USB_CNTR_ESOFM | USB_CNTR_RESETM;
/*Set interrupt mask*/
hpcd->Instance->CNTR = wInterrupt_Mask;
HAL_PCD_ResumeCallback(hpcd);
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_WKUP);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_SUSP))
{
/* clear of the ISTR bit must be done after setting of CNTR_FSUSP */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SUSP);
#if 0 /* MODIFIED: when enabled, CDC latency is painfully choppy */
/* Force low-power mode in the macrocell */
hpcd->Instance->CNTR |= USB_CNTR_FSUSP;
hpcd->Instance->CNTR |= USB_CNTR_LPMODE;
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_WKUP) == 0)
{
HAL_PCD_SuspendCallback(hpcd);
}
#endif
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_SOF))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SOF);
HAL_PCD_SOFCallback(hpcd);
}
if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_ESOF))
{
/* clear ESOF flag in ISTR */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_ESOF);
}
}
/**
* @brief Data out stage callbacks
* @param hpcd: PCD handle
* @param epnum: endpoint number
* @retval None
*/
__weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_DataOutStageCallback could be implemented in the user file
*/
}
/**
* @brief Data IN stage callbacks
* @param hpcd: PCD handle
* @param epnum: endpoint number
* @retval None
*/
__weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_DataInStageCallback could be implemented in the user file
*/
}
/**
* @brief Setup stage callback
* @param hpcd: ppp handle
* @retval None
*/
__weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_SetupStageCallback could be implemented in the user file
*/
}
/**
* @brief USB Start Of Frame callbacks
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_SOFCallback could be implemented in the user file
*/
}
/**
* @brief USB Reset callbacks
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_ResetCallback could be implemented in the user file
*/
}
/**
* @brief Suspend event callbacks
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_SuspendCallback could be implemented in the user file
*/
}
/**
* @brief Resume event callbacks
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_ResumeCallback could be implemented in the user file
*/
}
/**
* @brief Incomplete ISO OUT callbacks
* @param hpcd: PCD handle
* @param epnum: endpoint number
* @retval None
*/
__weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_ISOOUTIncompleteCallback could be implemented in the user file
*/
}
/**
* @brief Incomplete ISO IN callbacks
* @param hpcd: PCD handle
* @param epnum: endpoint number
* @retval None
*/
__weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_ISOINIncompleteCallback could be implemented in the user file
*/
}
/**
* @brief Connection event callbacks
* @param hpcd: PCD handle
* @retval None
*/
__weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_ConnectCallback could be implemented in the user file
*/
}
/**
* @brief Disconnection event callbacks
* @param hpcd: ppp handle
* @retval None
*/
__weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_PCD_DisconnectCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup PCD_Exported_Functions_Group3 Peripheral Control functions
* @brief management functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the PCD data
transfers.
@endverbatim
* @{
*/
/**
* @brief Connect the USB device
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd)
{
__HAL_LOCK(hpcd);
/* Enabling DP Pull-Down bit to Connect internal pull-up on USB DP line */
hpcd->Instance->BCDR |= USB_BCDR_DPPU;
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Disconnect the USB device
* @param hpcd: PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd)
{
__HAL_LOCK(hpcd);
/* Disable DP Pull-Down bit*/
hpcd->Instance->BCDR &= ~(USB_BCDR_DPPU);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Set the USB Device address
* @param hpcd: PCD handle
* @param address: new device address
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address)
{
__HAL_LOCK(hpcd);
if(address == 0)
{
/* set device address and enable function */
hpcd->Instance->DADDR = USB_DADDR_EF;
}
else /* USB Address will be applied later */
{
hpcd->USB_Address = address;
}
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Open and configure an endpoint
* @param hpcd: PCD handle
* @param ep_addr: endpoint address
* @param ep_mps: endpoint max packert size
* @param ep_type: endpoint type
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type)
{
HAL_StatusTypeDef ret = HAL_OK;
PCD_EPTypeDef *ep;
if ((ep_addr & 0x80) == 0x80)
{
ep = &hpcd->IN_ep[ep_addr & 0x7F];
}
else
{
ep = &hpcd->OUT_ep[ep_addr & 0x7F];
}
ep->num = ep_addr & 0x7F;
ep->is_in = (0x80 & ep_addr) != 0;
ep->maxpacket = ep_mps;
ep->type = ep_type;
__HAL_LOCK(hpcd);
/* initialize Endpoint */
switch (ep->type)
{
case PCD_EP_TYPE_CTRL:
PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_CONTROL);
break;
case PCD_EP_TYPE_BULK:
PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_BULK);
break;
case PCD_EP_TYPE_INTR:
PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_INTERRUPT);
break;
case PCD_EP_TYPE_ISOC:
PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_ISOCHRONOUS);
break;
}
PCD_SET_EP_ADDRESS(hpcd->Instance, ep->num, ep->num);
if (ep->doublebuffer == 0)
{
if (ep->is_in)
{
/*Set the endpoint Transmit buffer address */
PCD_SET_EP_TX_ADDRESS(hpcd->Instance, ep->num, ep->pmaadress);
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
/* Configure NAK status for the Endpoint*/
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_NAK);
}
else
{
/*Set the endpoint Receive buffer address */
PCD_SET_EP_RX_ADDRESS(hpcd->Instance, ep->num, ep->pmaadress);
/*Set the endpoint Receive buffer counter*/
PCD_SET_EP_RX_CNT(hpcd->Instance, ep->num, ep->maxpacket);
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
/* Configure VALID status for the Endpoint*/
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_VALID);
}
}
/*Double Buffer*/
else
{
/*Set the endpoint as double buffered*/
PCD_SET_EP_DBUF(hpcd->Instance, ep->num);
/*Set buffer address for double buffered mode*/
PCD_SET_EP_DBUF_ADDR(hpcd->Instance, ep->num,ep->pmaaddr0, ep->pmaaddr1);
if (ep->is_in==0)
{
/* Clear the data toggle bits for the endpoint IN/OUT*/
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
/* Reset value of the data toggle bits for the endpoint out*/
PCD_TX_DTOG(hpcd->Instance, ep->num);
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_VALID);
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS);
}
else
{
/* Clear the data toggle bits for the endpoint IN/OUT*/
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
PCD_RX_DTOG(hpcd->Instance, ep->num);
/* Configure DISABLE status for the Endpoint*/
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS);
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_DIS);
}
}
__HAL_UNLOCK(hpcd);
return ret;
}
/**
* @brief Deactivate an endpoint
* @param hpcd: PCD handle
* @param ep_addr: endpoint address
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
PCD_EPTypeDef *ep;
if ((ep_addr & 0x80) == 0x80)
{
ep = &hpcd->IN_ep[ep_addr & 0x7F];
}
else
{
ep = &hpcd->OUT_ep[ep_addr & 0x7F];
}
ep->num = ep_addr & 0x7F;
ep->is_in = (0x80 & ep_addr) != 0;
__HAL_LOCK(hpcd);
if (ep->doublebuffer == 0)
{
if (ep->is_in)
{
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
/* Configure DISABLE status for the Endpoint*/
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS);
}
else
{
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
/* Configure DISABLE status for the Endpoint*/
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_DIS);
}
}
/*Double Buffer*/
else
{
if (ep->is_in==0)
{
/* Clear the data toggle bits for the endpoint IN/OUT*/
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
/* Reset value of the data toggle bits for the endpoint out*/
PCD_TX_DTOG(hpcd->Instance, ep->num);
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_DIS);
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS);
}
else
{
/* Clear the data toggle bits for the endpoint IN/OUT*/
PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num);
PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num);
PCD_RX_DTOG(hpcd->Instance, ep->num);
/* Configure DISABLE status for the Endpoint*/
PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS);
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_DIS);
}
}
__HAL_UNLOCK(hpcd);
return HAL_OK;