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stm32f1xx_hal_pcd.c
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stm32f1xx_hal_pcd.c
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/**
******************************************************************************
* @file stm32f1xx_hal_pcd.c
* @author MCD Application Team
* @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
*
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
#include "stm32f1xx_hal_def.h"
#include "stm32f1xx_hal_pcd.h"
#include "usbd_drv.h"
#define PCD_MIN(a, b) (((a) < (b)) ? (a) : (b))
#define PCD_MAX(a, b) (((a) > (b)) ? (a) : (b))
static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd);
static HAL_StatusTypeDef HAL_PCD_EP_DB_Transmit(PCD_HandleTypeDef *hpcd, PCD_EPTypeDef *ep, uint16_t wEPVal);
static uint16_t HAL_PCD_EP_DB_Receive(PCD_HandleTypeDef *hpcd, PCD_EPTypeDef *ep, uint16_t wEPVal);
/**
* @brief Initializes the PCD according to the specified
* parameters in the PCD_InitTypeDef and initialize the associated handle.
* @param hpcd PCD handle
* @retval HAL status
*/
int USBD_Drv_Init(PCD_HandleTypeDef *hpcd, void* context)
{
uint8_t i;
/* Check the PCD handle allocation */
if (hpcd == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance));
if (hpcd->State == HAL_PCD_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hpcd->Lock = HAL_UNLOCKED;
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
//HAL_PCD_MspInit(hpcd);
}
hpcd->State = HAL_PCD_STATE_BUSY;
/* Disable the Interrupts */
__HAL_PCD_DISABLE(hpcd);
/* Init endpoints structures */
for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
{
/* Init ep structure */
hpcd->IN_ep[i].is_in = 1U;
hpcd->IN_ep[i].num = i;
hpcd->IN_ep[i].tx_fifo_num = i;
/* Control until ep is activated */
hpcd->IN_ep[i].type = EP_TYPE_CTRL;
hpcd->IN_ep[i].maxpacket = 0U;
hpcd->IN_ep[i].u.xfer_buff = 0U;
hpcd->IN_ep[i].xfer_len = 0U;
}
for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
{
hpcd->OUT_ep[i].is_in = 0U;
hpcd->OUT_ep[i].num = i;
/* Control until ep is activated */
hpcd->OUT_ep[i].type = EP_TYPE_CTRL;
hpcd->OUT_ep[i].maxpacket = 0U;
hpcd->OUT_ep[i].u.xfer_buff = 0U;
hpcd->OUT_ep[i].xfer_len = 0U;
}
/* Init Device */
if (USB_DevInit(hpcd->Instance, hpcd->Init) != HAL_OK)
{
hpcd->State = HAL_PCD_STATE_ERROR;
return HAL_ERROR;
}
hpcd->pData = context;
hpcd->USB_Address = 0U;
hpcd->State = HAL_PCD_STATE_READY;
return HAL_OK;
}
/**
* @brief DeInitializes the PCD peripheral.
* @param hpcd PCD handle
* @retval HAL status
*/
int USBD_Drv_DeInit(PCD_HandleTypeDef *hpcd)
{
/* Check the PCD handle allocation */
if (hpcd == NULL)
{
return HAL_ERROR;
}
hpcd->State = HAL_PCD_STATE_BUSY;
/* Stop Device */
if (USB_StopDevice(hpcd->Instance) != HAL_OK)
{
return HAL_ERROR;
}
/* DeInit the low level hardware: CLOCK, NVIC.*/
//HAL_PCD_MspDeInit(hpcd);
hpcd->State = HAL_PCD_STATE_RESET;
return HAL_OK;
}
/**
* @brief Start the USB device
* @param hpcd PCD handle
* @retval HAL status
*/
int USBD_Drv_Start(PCD_HandleTypeDef *hpcd)
{
__HAL_LOCK(hpcd);
__HAL_PCD_ENABLE(hpcd);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Stop the USB device.
* @param hpcd PCD handle
* @retval HAL status
*/
int USBD_Drv_Stop(PCD_HandleTypeDef *hpcd)
{
__HAL_LOCK(hpcd);
__HAL_PCD_DISABLE(hpcd);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief This function handles PCD interrupt request.
* @param hpcd PCD handle
* @retval HAL status
*/
void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
{
uint16_t store_ep[8];
uint8_t i;
if (__HAL_PCD_GET_FLAG(hpcd, USB_ISTR_CTR))
{
/* servicing of the endpoint correct transfer interrupt */
/* clear of the CTR flag into the sub */
(void)PCD_EP_ISR_Handler(hpcd);
}
if (__HAL_PCD_GET_FLAG(hpcd, USB_ISTR_RESET))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_RESET);
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->ResetCallback(hpcd);
#else
USBD_Lib_Reset(hpcd->pData);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
(void)USBD_Drv_SetAddress(hpcd, 0U);
}
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 &= (uint16_t) ~(USB_CNTR_LP_MODE);
hpcd->Instance->CNTR &= (uint16_t) ~(USB_CNTR_FSUSP);
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->ResumeCallback(hpcd);
#else
USBD_Lib_Resume(hpcd->pData);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_WKUP);
}
if (__HAL_PCD_GET_FLAG(hpcd, USB_ISTR_SUSP))
{
/* WA: To Clear Wakeup flag if raised with suspend signal */
/* Store Endpoint register */
for (i = 0U; i < 8U; i++)
{
store_ep[i] = PCD_GET_ENDPOINT(hpcd->Instance, i);
}
/* FORCE RESET */
hpcd->Instance->CNTR |= (uint16_t)(USB_CNTR_FRES);
/* CLEAR RESET */
hpcd->Instance->CNTR &= (uint16_t)(~USB_CNTR_FRES);
/* wait for reset flag in ISTR */
while ((hpcd->Instance->ISTR & USB_ISTR_RESET) == 0U)
{
}
/* Clear Reset Flag */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_RESET);
/* Restore Registre */
for (i = 0U; i < 8U; i++)
{
PCD_SET_ENDPOINT(hpcd->Instance, i, store_ep[i]);
}
/* Force low-power mode in the macrocell */
hpcd->Instance->CNTR |= (uint16_t)USB_CNTR_FSUSP;
/* clear of the ISTR bit must be done after setting of CNTR_FSUSP */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SUSP);
hpcd->Instance->CNTR |= (uint16_t)USB_CNTR_LP_MODE;
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->SuspendCallback(hpcd);
#else
USBD_Lib_Suspend(hpcd->pData);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
if (__HAL_PCD_GET_FLAG(hpcd, USB_ISTR_SOF))
{
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SOF);
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->SOFCallback(hpcd);
#else
USBD_Lib_SOF(hpcd->pData);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
if (__HAL_PCD_GET_FLAG(hpcd, USB_ISTR_ESOF))
{
/* clear ESOF flag in ISTR */
__HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_ESOF);
}
}
/**
* @brief Handles PCD Wakeup interrupt request.
* @param hpcd PCD handle
* @retval HAL status
*/
void HAL_PCD_WKUP_IRQHandler(PCD_HandleTypeDef *hpcd)
{
/* Clear EXTI pending Bit */
__HAL_USB_WAKEUP_EXTI_CLEAR_FLAG();
}
/**
* @brief Set the USB Device address.
* @param hpcd PCD handle
* @param address new device address
* @retval HAL status
*/
int USBD_Drv_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address)
{
__HAL_LOCK(hpcd);
hpcd->USB_Address = address;
(void)USB_SetDevAddress(hpcd->Instance, 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 packet size
* @param ep_type endpoint type
* @retval HAL status
*/
int USBD_Drv_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 & 0x80U) == 0x80U)
{
ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 1U;
}
else
{
ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 0U;
}
ep->num = ep_addr & EP_ADDR_MSK;
ep->maxpacket = ep_mps;
ep->type = ep_type;
if (ep->is_in != 0U)
{
/* Assign a Tx FIFO */
ep->tx_fifo_num = ep->num;
}
/* Set initial data PID. */
if (ep_type == EP_TYPE_BULK)
{
ep->data_pid_start = 0U;
}
__HAL_LOCK(hpcd);
(void)USB_ActivateEndpoint(hpcd->Instance, ep);
__HAL_UNLOCK(hpcd);
return ret;
}
/**
* @brief Deactivate an endpoint.
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @retval HAL status
*/
int USBD_Drv_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
PCD_EPTypeDef *ep;
if ((ep_addr & 0x80U) == 0x80U)
{
ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 1U;
}
else
{
ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 0U;
}
ep->num = ep_addr & EP_ADDR_MSK;
__HAL_LOCK(hpcd);
(void)USB_DeactivateEndpoint(hpcd->Instance, ep);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Receive an amount of data.
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @param pBuf pointer to the reception buffer
* @param len amount of data to be received
* @retval HAL status
*/
int USBD_Drv_EP_Receive(
PCD_HandleTypeDef *hpcd,
uint8_t ep_addr,
uint8_t *pBuf,
uint32_t len)
{
PCD_EPTypeDef *ep;
ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
/*setup and start the Xfer */
ep->u.xfer_buff = pBuf;
ep->xfer_len = len;
ep->xfer_count = 0U;
ep->is_in = 0U;
ep->num = ep_addr & EP_ADDR_MSK;
if ((ep_addr & EP_ADDR_MSK) == 0U)
{
(void)USB_EP0StartXfer(hpcd->Instance, ep);
}
else
{
(void)USB_EPStartXfer(hpcd->Instance, ep);
}
return HAL_OK;
}
/**
* @brief Get Received Data Size
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @retval Data Size
*/
size_t USBD_Drv_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
return hpcd->OUT_ep[ep_addr & EP_ADDR_MSK].xfer_count;
}
/**
* @brief Send an amount of data
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @param pBuf pointer to the transmission buffer
* @param len amount of data to be sent
* @retval HAL status
*/
int USBD_Drv_EP_Transmit(
PCD_HandleTypeDef *hpcd,
uint8_t ep_addr,
const uint8_t *pBuf,
uint32_t len)
{
PCD_EPTypeDef *ep;
ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
/*setup and start the Xfer */
ep->u.xfer_buff_ro = pBuf;
ep->xfer_len = len;
#if defined (USB)
ep->xfer_fill_db = 1U;
ep->xfer_len_db = len;
#endif /* defined (USB) */
ep->xfer_count = 0U;
ep->is_in = 1U;
ep->num = ep_addr & EP_ADDR_MSK;
if ((ep_addr & EP_ADDR_MSK) == 0U)
{
(void)USB_EP0StartXfer(hpcd->Instance, ep);
}
else
{
(void)USB_EPStartXfer(hpcd->Instance, ep);
}
return HAL_OK;
}
/**
* @brief Set a STALL condition over an endpoint
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @retval HAL status
*/
int USBD_Drv_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
PCD_EPTypeDef *ep;
if (((uint32_t)ep_addr & EP_ADDR_MSK) > hpcd->Init.dev_endpoints)
{
return HAL_ERROR;
}
if ((0x80U & ep_addr) == 0x80U)
{
ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 1U;
}
else
{
ep = &hpcd->OUT_ep[ep_addr];
ep->is_in = 0U;
}
ep->is_stall = 1U;
ep->num = ep_addr & EP_ADDR_MSK;
__HAL_LOCK(hpcd);
(void)USB_EPSetStall(hpcd->Instance, ep);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Clear a STALL condition over in an endpoint
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @retval HAL status
*/
int USBD_Drv_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
PCD_EPTypeDef *ep;
if (((uint32_t)ep_addr & 0x0FU) > hpcd->Init.dev_endpoints)
{
return HAL_ERROR;
}
if ((0x80U & ep_addr) == 0x80U)
{
ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 1U;
}
else
{
ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
ep->is_in = 0U;
}
ep->is_stall = 0U;
ep->num = ep_addr & EP_ADDR_MSK;
__HAL_LOCK(hpcd);
(void)USB_EPClearStall(hpcd->Instance, ep);
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Returns Stall condition.
* @param hpcd PCD handle
* @param ep_addr: Endpoint number
* @retval Stall (1: Yes, 0: No)
*/
int USBD_Drv_EP_IsStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
const PCD_EPTypeDef* pep = ((ep_addr & 0x80) == 0x80) ?
hpcd->IN_ep :
hpcd->OUT_ep;
return pep[ep_addr & 0x7F].is_stall;
}
/**
* @brief Flush an endpoint
* @param hpcd PCD handle
* @param ep_addr endpoint address
* @retval HAL status
*/
int USBD_Drv_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
__HAL_LOCK(hpcd);
if ((ep_addr & 0x80U) == 0x80U)
{
(void)USB_FlushTxFifo(hpcd->Instance, (uint32_t)ep_addr & EP_ADDR_MSK);
}
else
{
(void)USB_FlushRxFifo(hpcd->Instance);
}
__HAL_UNLOCK(hpcd);
return HAL_OK;
}
/**
* @brief Activate remote wakeup signalling
* @param hpcd PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
{
return (USB_ActivateRemoteWakeup(hpcd->Instance));
}
/**
* @brief De-activate remote wakeup signalling.
* @param hpcd PCD handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
{
return (USB_DeActivateRemoteWakeup(hpcd->Instance));
}
/**
* @brief Return the PCD handle state.
* @param hpcd PCD handle
* @retval HAL state
*/
PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
{
return hpcd->State;
}
/**
* @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, wIstr, wEPVal, TxByteNbre;
uint8_t epindex;
/* stay in loop while pending interrupts */
while ((hpcd->Instance->ISTR & USB_ISTR_CTR) != 0U)
{
wIstr = hpcd->Instance->ISTR;
/* extract highest priority endpoint number */
epindex = (uint8_t)(wIstr & USB_ISTR_EP_ID);
if (epindex == 0U)
{
/* Decode and service control endpoint interrupt */
/* DIR bit = origin of the interrupt */
if ((wIstr & USB_ISTR_DIR) == 0U)
{
/* 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->u.xfer_buff_ro += ep->xfer_count;
/* TX COMPLETE */
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->DataInStageCallback(hpcd, 0U);
#else
USBD_Lib_DataInStage(hpcd->pData, 0, hpcd->IN_ep[0].u.xfer_buff_ro);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
if ((hpcd->USB_Address > 0U) && (ep->xfer_len == 0U))
{
hpcd->Instance->DADDR = ((uint16_t)hpcd->USB_Address | USB_DADDR_EF);
hpcd->USB_Address = 0U;
}
}
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) != 0U)
{
/* Get SETUP Packet */
ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
USB_ReadPMA(hpcd->Instance, (uint8_t *)hpcd->Setup,
ep->pmaadress, (uint16_t)ep->xfer_count);
/* SETUP bit kept frozen while CTR_RX = 1 */
PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0);
/* Process SETUP Packet*/
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->SetupStageCallback(hpcd);
#else
USBD_Lib_SetupStage(hpcd->pData, (uint8_t *)hpcd->Setup);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
else if ((wEPVal & USB_EP_CTR_RX) != 0U)
{
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 != 0U) && (ep->u.xfer_buff != 0U))
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff,
ep->pmaadress, (uint16_t)ep->xfer_count);
ep->u.xfer_buff += ep->xfer_count;
/* Process Control Data OUT Packet */
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->DataOutStageCallback(hpcd, 0U);
#else
USBD_Lib_DataOutStage(hpcd->pData, 0, hpcd->OUT_ep[0].u.xfer_buff);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
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) != 0U)
{
/* clear int flag */
PCD_CLEAR_RX_EP_CTR(hpcd->Instance, epindex);
ep = &hpcd->OUT_ep[epindex];
/* OUT Single Buffering */
if (ep->doublebuffer == 0U)
{
count = (uint16_t)PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
if (count != 0U)
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff, ep->pmaadress, count);
}
}
else
{
/* manage double buffer bulk out */
if (ep->type == EP_TYPE_BULK)
{
count = HAL_PCD_EP_DB_Receive(hpcd, ep, wEPVal);
}
else /* manage double buffer iso out */
{
/* free EP OUT Buffer */
PCD_FreeUserBuffer(hpcd->Instance, ep->num, 0U);
if ((PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_RX) != 0U)
{
/* read from endpoint BUF0Addr buffer */
count = (uint16_t)PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
if (count != 0U)
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff, ep->pmaaddr0, count);
}
}
else
{
/* read from endpoint BUF1Addr buffer */
count = (uint16_t)PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
if (count != 0U)
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff, ep->pmaaddr1, count);
}
}
}
}
/* multi-packet on the NON control OUT endpoint */
ep->xfer_count += count;
ep->u.xfer_buff += count;
if ((ep->xfer_len == 0U) || (count < ep->maxpacket))
{
/* RX COMPLETE */
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->DataOutStageCallback(hpcd, ep->num);
#else
USBD_Lib_DataOutStage(hpcd->pData, ep->num, hpcd->OUT_ep[ep->num].u.xfer_buff);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
else
{
(void) USB_EPStartXfer(hpcd->Instance, ep);
}
}
if ((wEPVal & USB_EP_CTR_TX) != 0U)
{
ep = &hpcd->IN_ep[epindex];
/* clear int flag */
PCD_CLEAR_TX_EP_CTR(hpcd->Instance, epindex);
/* Manage all non bulk transaction or Bulk Single Buffer Transaction */
if ((ep->type != EP_TYPE_BULK) ||
((ep->type == EP_TYPE_BULK) && ((wEPVal & USB_EP_KIND) == 0U)))
{
/* multi-packet on the NON control IN endpoint */
TxByteNbre = (uint16_t)PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
if (ep->xfer_len > TxByteNbre)
{
ep->xfer_len -= TxByteNbre;
}
else
{
ep->xfer_len = 0U;
}
/* Zero Length Packet? */
if (ep->xfer_len == 0U)
{
/* TX COMPLETE */
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->DataInStageCallback(hpcd, ep->num);
#else
USBD_Lib_DataInStage(hpcd->pData, ep->num, hpcd->IN_ep[ep->num].u.xfer_buff_ro);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
}
else
{
/* Transfer is not yet Done */
ep->u.xfer_buff_ro += TxByteNbre;
ep->xfer_count += TxByteNbre;
(void)USB_EPStartXfer(hpcd->Instance, ep);
}
}
/* bulk in double buffer enable in case of transferLen> Ep_Mps */
else
{
(void)HAL_PCD_EP_DB_Transmit(hpcd, ep, wEPVal);
}
}
}
}
return HAL_OK;
}
/**
* @brief Manage double buffer bulk out transaction from ISR
* @param hpcd PCD handle
* @param ep current endpoint handle
* @param wEPVal Last snapshot of EPRx register value taken in ISR
* @retval HAL status
*/
static uint16_t HAL_PCD_EP_DB_Receive(PCD_HandleTypeDef *hpcd,
PCD_EPTypeDef *ep, uint16_t wEPVal)
{
uint16_t count;
/* Manage Buffer0 OUT */
if ((wEPVal & USB_EP_DTOG_RX) != 0U)
{
/* Get count of received Data on buffer0 */
count = (uint16_t)PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
if (ep->xfer_len >= count)
{
ep->xfer_len -= count;
}
else
{
ep->xfer_len = 0U;
}
if (ep->xfer_len == 0U)
{
/* set NAK to OUT endpoint since double buffer is enabled */
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_NAK);
}
/* Check if Buffer1 is in blocked sate which requires to toggle */
if ((wEPVal & USB_EP_DTOG_TX) != 0U)
{
PCD_FreeUserBuffer(hpcd->Instance, ep->num, 0U);
}
if (count != 0U)
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff, ep->pmaaddr0, count);
}
}
/* Manage Buffer 1 DTOG_RX=0 */
else
{
/* Get count of received data */
count = (uint16_t)PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
if (ep->xfer_len >= count)
{
ep->xfer_len -= count;
}
else
{
ep->xfer_len = 0U;
}
if (ep->xfer_len == 0U)
{
/* set NAK on the current endpoint */
PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_NAK);
}
/*Need to FreeUser Buffer*/
if ((wEPVal & USB_EP_DTOG_TX) == 0U)
{
PCD_FreeUserBuffer(hpcd->Instance, ep->num, 0U);
}
if (count != 0U)
{
USB_ReadPMA(hpcd->Instance, ep->u.xfer_buff, ep->pmaaddr1, count);
}
}
return count;
}
/**
* @brief Manage double buffer bulk IN transaction from ISR
* @param hpcd PCD handle
* @param ep current endpoint handle
* @param wEPVal Last snapshot of EPRx register value taken in ISR
* @retval HAL status
*/
static HAL_StatusTypeDef HAL_PCD_EP_DB_Transmit(PCD_HandleTypeDef *hpcd,
PCD_EPTypeDef *ep, uint16_t wEPVal)
{
uint32_t len;
uint16_t TxByteNbre;
/* Data Buffer0 ACK received */
if ((wEPVal & USB_EP_DTOG_TX) != 0U)
{
/* multi-packet on the NON control IN endpoint */
TxByteNbre = (uint16_t)PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
if (ep->xfer_len > TxByteNbre)
{
ep->xfer_len -= TxByteNbre;
}
else
{
ep->xfer_len = 0U;
}
/* Transfer is completed */
if (ep->xfer_len == 0U)
{
/* TX COMPLETE */
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
hpcd->DataInStageCallback(hpcd, ep->num);
#else
USBD_Lib_DataInStage(hpcd->pData, ep->num, hpcd->IN_ep[ep->num].u.xfer_buff_ro);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
if ((wEPVal & USB_EP_DTOG_RX) != 0U)
{
PCD_FreeUserBuffer(hpcd->Instance, ep->num, 1U);
}
}
else /* Transfer is not yet Done */
{
/* need to Free USB Buff */
if ((wEPVal & USB_EP_DTOG_RX) != 0U)
{
PCD_FreeUserBuffer(hpcd->Instance, ep->num, 1U);
}
/* Still there is data to Fill in the next Buffer */
if (ep->xfer_fill_db == 1U)
{
ep->u.xfer_buff_ro += TxByteNbre;
ep->xfer_count += TxByteNbre;
/* Calculate the len of the new buffer to fill */
if (ep->xfer_len_db >= ep->maxpacket)
{
len = ep->maxpacket;
ep->xfer_len_db -= len;
}
else if (ep->xfer_len_db == 0U)
{
len = TxByteNbre;
ep->xfer_fill_db = 0U;
}
else
{