/** | |
****************************************************************************** | |
* @file stm32f7xx_hal_pcd.c | |
* @author MCD Application Team | |
* @version V1.1.1 | |
* @date 01-July-2016 | |
* @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 PCD 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 | |
(+++) __HAL_RCC_USB_OTG_FS_CLK_ENABLE(); | |
(+++) __HAL_RCC_USB_OTG_HS_CLK_ENABLE(); (For High Speed Mode) | |
(##) 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 PCD transmission and reception: | |
(##) HAL_PCD_Start(); | |
@endverbatim | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2016 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 "stm32f7xx_hal.h" | |
/** @addtogroup STM32F7xx_HAL_Driver | |
* @{ | |
*/ | |
/** @defgroup PCD PCD | |
* @brief PCD HAL module driver | |
* @{ | |
*/ | |
#ifdef HAL_PCD_MODULE_ENABLED | |
/* Private types -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private constants ---------------------------------------------------------*/ | |
/* Private macros ------------------------------------------------------------*/ | |
/** @defgroup PCD_Private_Macros PCD Private Macros | |
* @{ | |
*/ | |
#define PCD_MIN(a, b) (((a) < (b)) ? (a) : (b)) | |
#define PCD_MAX(a, b) (((a) > (b)) ? (a) : (b)) | |
/** | |
* @} | |
*/ | |
/* Private functions prototypes ----------------------------------------------*/ | |
/** @defgroup PCD_Private_Functions PCD Private Functions | |
* @{ | |
*/ | |
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum); | |
/** | |
* @} | |
*/ | |
/* 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; | |
/* Check the PCD handle allocation */ | |
if(hpcd == NULL) | |
{ | |
return HAL_ERROR; | |
} | |
/* Check the parameters */ | |
assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance)); | |
hpcd->State = HAL_PCD_STATE_BUSY; | |
/* Init the low level hardware : GPIO, CLOCK, NVIC... */ | |
HAL_PCD_MspInit(hpcd); | |
/* Disable the Interrupts */ | |
__HAL_PCD_DISABLE(hpcd); | |
/*Init the Core (common init.) */ | |
USB_CoreInit(hpcd->Instance, hpcd->Init); | |
/* Force Device Mode*/ | |
USB_SetCurrentMode(hpcd->Instance , USB_OTG_DEVICE_MODE); | |
/* Init endpoints structures */ | |
for (i = 0; i < 15 ; i++) | |
{ | |
/* Init ep structure */ | |
hpcd->IN_ep[i].is_in = 1; | |
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 = 0; | |
hpcd->IN_ep[i].xfer_buff = 0; | |
hpcd->IN_ep[i].xfer_len = 0; | |
} | |
for (i = 0; i < 15 ; i++) | |
{ | |
hpcd->OUT_ep[i].is_in = 0; | |
hpcd->OUT_ep[i].num = i; | |
hpcd->IN_ep[i].tx_fifo_num = i; | |
/* Control until ep is activated */ | |
hpcd->OUT_ep[i].type = EP_TYPE_CTRL; | |
hpcd->OUT_ep[i].maxpacket = 0; | |
hpcd->OUT_ep[i].xfer_buff = 0; | |
hpcd->OUT_ep[i].xfer_len = 0; | |
hpcd->Instance->DIEPTXF[i] = 0; | |
} | |
/* Init Device */ | |
USB_DevInit(hpcd->Instance, hpcd->Init); | |
hpcd->State= HAL_PCD_STATE_READY; | |
/* Activate LPM */ | |
if (hpcd->Init.lpm_enable == 1) | |
{ | |
HAL_PCDEx_ActivateLPM(hpcd); | |
} | |
USB_DevDisconnect (hpcd->Instance); | |
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 = HAL_PCD_STATE_BUSY; | |
/* Stop Device */ | |
HAL_PCD_Stop(hpcd); | |
/* DeInit the low level hardware */ | |
HAL_PCD_MspDeInit(hpcd); | |
hpcd->State = HAL_PCD_STATE_RESET; | |
return HAL_OK; | |
} | |
/** | |
* @brief Initializes the PCD MSP. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 Input and Output 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) | |
{ | |
__HAL_LOCK(hpcd); | |
USB_DevConnect (hpcd->Instance); | |
__HAL_PCD_ENABLE(hpcd); | |
__HAL_UNLOCK(hpcd); | |
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); | |
__HAL_PCD_DISABLE(hpcd); | |
USB_StopDevice(hpcd->Instance); | |
USB_DevDisconnect (hpcd->Instance); | |
__HAL_UNLOCK(hpcd); | |
return HAL_OK; | |
} | |
/** | |
* @brief Handle PCD interrupt request. | |
* @param hpcd: PCD handle | |
* @retval HAL status | |
*/ | |
void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd) | |
{ | |
USB_OTG_GlobalTypeDef *USBx = hpcd->Instance; | |
uint32_t i = 0, ep_intr = 0, epint = 0, epnum = 0; | |
uint32_t fifoemptymsk = 0, temp = 0; | |
USB_OTG_EPTypeDef *ep = NULL; | |
uint32_t hclk = 200000000; | |
/* ensure that we are in device mode */ | |
if (USB_GetMode(hpcd->Instance) == USB_OTG_MODE_DEVICE) | |
{ | |
/* avoid spurious interrupt */ | |
if(__HAL_PCD_IS_INVALID_INTERRUPT(hpcd)) | |
{ | |
return; | |
} | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_MMIS)) | |
{ | |
/* incorrect mode, acknowledge the interrupt */ | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_MMIS); | |
} | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OEPINT)) | |
{ | |
epnum = 0; | |
/* Read in the device interrupt bits */ | |
ep_intr = USB_ReadDevAllOutEpInterrupt(hpcd->Instance); | |
while ( ep_intr ) | |
{ | |
if (ep_intr & 0x1) | |
{ | |
epint = USB_ReadDevOutEPInterrupt(hpcd->Instance, epnum); | |
if(( epint & USB_OTG_DOEPINT_XFRC) == USB_OTG_DOEPINT_XFRC) | |
{ | |
CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_XFRC); | |
if(hpcd->Init.dma_enable == 1) | |
{ | |
hpcd->OUT_ep[epnum].xfer_count = hpcd->OUT_ep[epnum].maxpacket- (USBx_OUTEP(epnum)->DOEPTSIZ & USB_OTG_DOEPTSIZ_XFRSIZ); | |
hpcd->OUT_ep[epnum].xfer_buff += hpcd->OUT_ep[epnum].maxpacket; | |
} | |
HAL_PCD_DataOutStageCallback(hpcd, epnum); | |
if(hpcd->Init.dma_enable == 1) | |
{ | |
if((epnum == 0) && (hpcd->OUT_ep[epnum].xfer_len == 0)) | |
{ | |
/* this is ZLP, so prepare EP0 for next setup */ | |
USB_EP0_OutStart(hpcd->Instance, 1, (uint8_t *)hpcd->Setup); | |
} | |
} | |
} | |
if(( epint & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP) | |
{ | |
/* Inform the upper layer that a setup packet is available */ | |
HAL_PCD_SetupStageCallback(hpcd); | |
CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STUP); | |
} | |
if(( epint & USB_OTG_DOEPINT_OTEPDIS) == USB_OTG_DOEPINT_OTEPDIS) | |
{ | |
CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPDIS); | |
} | |
/* Clear Status Phase Received interrupt */ | |
if(( epint & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR) | |
{ | |
CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR); | |
} | |
} | |
epnum++; | |
ep_intr >>= 1; | |
} | |
} | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IEPINT)) | |
{ | |
/* Read in the device interrupt bits */ | |
ep_intr = USB_ReadDevAllInEpInterrupt(hpcd->Instance); | |
epnum = 0; | |
while ( ep_intr ) | |
{ | |
if (ep_intr & 0x1) /* In ITR */ | |
{ | |
epint = USB_ReadDevInEPInterrupt(hpcd->Instance, epnum); | |
if(( epint & USB_OTG_DIEPINT_XFRC) == USB_OTG_DIEPINT_XFRC) | |
{ | |
fifoemptymsk = 0x1 << epnum; | |
USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk; | |
CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_XFRC); | |
if (hpcd->Init.dma_enable == 1) | |
{ | |
hpcd->IN_ep[epnum].xfer_buff += hpcd->IN_ep[epnum].maxpacket; | |
} | |
HAL_PCD_DataInStageCallback(hpcd, epnum); | |
if (hpcd->Init.dma_enable == 1) | |
{ | |
/* this is ZLP, so prepare EP0 for next setup */ | |
if((epnum == 0) && (hpcd->IN_ep[epnum].xfer_len == 0)) | |
{ | |
/* prepare to rx more setup packets */ | |
USB_EP0_OutStart(hpcd->Instance, 1, (uint8_t *)hpcd->Setup); | |
} | |
} | |
} | |
if(( epint & USB_OTG_DIEPINT_TOC) == USB_OTG_DIEPINT_TOC) | |
{ | |
CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_TOC); | |
} | |
if(( epint & USB_OTG_DIEPINT_ITTXFE) == USB_OTG_DIEPINT_ITTXFE) | |
{ | |
CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_ITTXFE); | |
} | |
if(( epint & USB_OTG_DIEPINT_INEPNE) == USB_OTG_DIEPINT_INEPNE) | |
{ | |
CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_INEPNE); | |
} | |
if(( epint & USB_OTG_DIEPINT_EPDISD) == USB_OTG_DIEPINT_EPDISD) | |
{ | |
CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_EPDISD); | |
} | |
if(( epint & USB_OTG_DIEPINT_TXFE) == USB_OTG_DIEPINT_TXFE) | |
{ | |
PCD_WriteEmptyTxFifo(hpcd , epnum); | |
} | |
} | |
epnum++; | |
ep_intr >>= 1; | |
} | |
} | |
/* Handle Resume Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT)) | |
{ | |
/* Clear the Remote Wake-up Signaling */ | |
USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG; | |
if(hpcd->LPM_State == LPM_L1) | |
{ | |
hpcd->LPM_State = LPM_L0; | |
HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L0_ACTIVE); | |
} | |
else | |
{ | |
HAL_PCD_ResumeCallback(hpcd); | |
} | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT); | |
} | |
/* Handle Suspend Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP)) | |
{ | |
if((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS) | |
{ | |
HAL_PCD_SuspendCallback(hpcd); | |
} | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP); | |
} | |
/* Handle LPM Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT)) | |
{ | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT); | |
if( hpcd->LPM_State == LPM_L0) | |
{ | |
hpcd->LPM_State = LPM_L1; | |
hpcd->BESL = (hpcd->Instance->GLPMCFG & USB_OTG_GLPMCFG_BESL) >>2 ; | |
HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L1_ACTIVE); | |
} | |
else | |
{ | |
HAL_PCD_SuspendCallback(hpcd); | |
} | |
} | |
/* Handle Reset Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBRST)) | |
{ | |
USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG; | |
USB_FlushTxFifo(hpcd->Instance , 0 ); | |
for (i = 0; i < hpcd->Init.dev_endpoints ; i++) | |
{ | |
USBx_INEP(i)->DIEPINT = 0xFF; | |
USBx_OUTEP(i)->DOEPINT = 0xFF; | |
} | |
USBx_DEVICE->DAINT = 0xFFFFFFFF; | |
USBx_DEVICE->DAINTMSK |= 0x10001; | |
if(hpcd->Init.use_dedicated_ep1) | |
{ | |
USBx_DEVICE->DOUTEP1MSK |= (USB_OTG_DOEPMSK_STUPM | USB_OTG_DOEPMSK_XFRCM | USB_OTG_DOEPMSK_EPDM); | |
USBx_DEVICE->DINEP1MSK |= (USB_OTG_DIEPMSK_TOM | USB_OTG_DIEPMSK_XFRCM | USB_OTG_DIEPMSK_EPDM); | |
} | |
else | |
{ | |
USBx_DEVICE->DOEPMSK |= (USB_OTG_DOEPMSK_STUPM | USB_OTG_DOEPMSK_XFRCM | USB_OTG_DOEPMSK_EPDM | USB_OTG_DOEPMSK_OTEPSPRM); | |
USBx_DEVICE->DIEPMSK |= (USB_OTG_DIEPMSK_TOM | USB_OTG_DIEPMSK_XFRCM | USB_OTG_DIEPMSK_EPDM); | |
} | |
/* Set Default Address to 0 */ | |
USBx_DEVICE->DCFG &= ~USB_OTG_DCFG_DAD; | |
/* setup EP0 to receive SETUP packets */ | |
USB_EP0_OutStart(hpcd->Instance, hpcd->Init.dma_enable, (uint8_t *)hpcd->Setup); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBRST); | |
} | |
/* Handle Enumeration done Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE)) | |
{ | |
USB_ActivateSetup(hpcd->Instance); | |
hpcd->Instance->GUSBCFG &= ~USB_OTG_GUSBCFG_TRDT; | |
if ( USB_GetDevSpeed(hpcd->Instance) == USB_OTG_SPEED_HIGH) | |
{ | |
hpcd->Init.speed = USB_OTG_SPEED_HIGH; | |
hpcd->Init.ep0_mps = USB_OTG_HS_MAX_PACKET_SIZE ; | |
hpcd->Instance->GUSBCFG |= (uint32_t)((USBD_HS_TRDT_VALUE << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else | |
{ | |
hpcd->Init.speed = USB_OTG_SPEED_FULL; | |
hpcd->Init.ep0_mps = USB_OTG_FS_MAX_PACKET_SIZE ; | |
/* The USBTRD is configured according to the tables below, depending on AHB frequency | |
used by application. In the low AHB frequency range it is used to stretch enough the USB response | |
time to IN tokens, the USB turnaround time, so to compensate for the longer AHB read access | |
latency to the Data FIFO */ | |
/* Get hclk frequency value */ | |
hclk = HAL_RCC_GetHCLKFreq(); | |
if((hclk >= 14200000)&&(hclk < 15000000)) | |
{ | |
/* hclk Clock Range between 14.2-15 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xF << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 15000000)&&(hclk < 16000000)) | |
{ | |
/* hclk Clock Range between 15-16 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xE << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 16000000)&&(hclk < 17200000)) | |
{ | |
/* hclk Clock Range between 16-17.2 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xD << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 17200000)&&(hclk < 18500000)) | |
{ | |
/* hclk Clock Range between 17.2-18.5 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xC << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 18500000)&&(hclk < 20000000)) | |
{ | |
/* hclk Clock Range between 18.5-20 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xB << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 20000000)&&(hclk < 21800000)) | |
{ | |
/* hclk Clock Range between 20-21.8 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0xA << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 21800000)&&(hclk < 24000000)) | |
{ | |
/* hclk Clock Range between 21.8-24 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0x9 << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 24000000)&&(hclk < 27700000)) | |
{ | |
/* hclk Clock Range between 24-27.7 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0x8 << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else if((hclk >= 27700000)&&(hclk < 32000000)) | |
{ | |
/* hclk Clock Range between 27.7-32 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0x7 << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
else /* if(hclk >= 32000000) */ | |
{ | |
/* hclk Clock Range between 32-200 MHz */ | |
hpcd->Instance->GUSBCFG |= (uint32_t)((0x6 << 10) & USB_OTG_GUSBCFG_TRDT); | |
} | |
} | |
HAL_PCD_ResetCallback(hpcd); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE); | |
} | |
/* Handle RxQLevel Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_RXFLVL)) | |
{ | |
USB_MASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL); | |
temp = USBx->GRXSTSP; | |
ep = &hpcd->OUT_ep[temp & USB_OTG_GRXSTSP_EPNUM]; | |
if(((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) == STS_DATA_UPDT) | |
{ | |
if((temp & USB_OTG_GRXSTSP_BCNT) != 0) | |
{ | |
USB_ReadPacket(USBx, ep->xfer_buff, (temp & USB_OTG_GRXSTSP_BCNT) >> 4); | |
ep->xfer_buff += (temp & USB_OTG_GRXSTSP_BCNT) >> 4; | |
ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4; | |
} | |
} | |
else if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) == STS_SETUP_UPDT) | |
{ | |
USB_ReadPacket(USBx, (uint8_t *)hpcd->Setup, 8); | |
ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4; | |
} | |
USB_UNMASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL); | |
} | |
/* Handle SOF Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SOF)) | |
{ | |
HAL_PCD_SOFCallback(hpcd); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SOF); | |
} | |
/* Handle Incomplete ISO IN Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR)) | |
{ | |
HAL_PCD_ISOINIncompleteCallback(hpcd, epnum); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR); | |
} | |
/* Handle Incomplete ISO OUT Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT)) | |
{ | |
HAL_PCD_ISOOUTIncompleteCallback(hpcd, epnum); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT); | |
} | |
/* Handle Connection event Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT)) | |
{ | |
HAL_PCD_ConnectCallback(hpcd); | |
__HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT); | |
} | |
/* Handle Disconnection event Interrupt */ | |
if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OTGINT)) | |
{ | |
temp = hpcd->Instance->GOTGINT; | |
if((temp & USB_OTG_GOTGINT_SEDET) == USB_OTG_GOTGINT_SEDET) | |
{ | |
HAL_PCD_DisconnectCallback(hpcd); | |
} | |
hpcd->Instance->GOTGINT |= temp; | |
} | |
} | |
} | |
/** | |
* @brief Data OUT stage callback. | |
* @param hpcd: PCD handle | |
* @param epnum: endpoint number | |
* @retval None | |
*/ | |
__weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hpcd); | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @param epnum: endpoint number | |
* @retval None | |
*/ | |
__weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hpcd); | |
UNUSED(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: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @param epnum: endpoint number | |
* @retval None | |
*/ | |
__weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hpcd); | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @param epnum: endpoint number | |
* @retval None | |
*/ | |
__weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(hpcd); | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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 callback. | |
* @param hpcd: PCD handle | |
* @retval None | |
*/ | |
__weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd) | |
{ | |
/* Prevent unused argument(s) compilation warning */ | |
UNUSED(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); | |
USB_DevConnect(hpcd->Instance); | |
__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); | |
USB_DevDisconnect(hpcd->Instance); | |
__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); | |
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 | |
*/ | |
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; | |
USB_OTG_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; | |
if (ep->is_in) | |
{ | |
/* Assign a Tx FIFO */ | |
ep->tx_fifo_num = ep->num; | |
} | |
/* Set initial data PID. */ | |
if (ep_type == EP_TYPE_BULK ) | |
{ | |
ep->data_pid_start = 0; | |
} | |
__HAL_LOCK(hpcd); | |
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 | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr) | |
{ | |
USB_OTG_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); | |
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 | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len) | |
{ | |
USB_OTG_EPTypeDef *ep; | |
ep = &hpcd->OUT_ep[ep_addr & 0x7F]; | |
/*setup and start the Xfer */ | |
ep->xfer_buff = pBuf; | |
ep->xfer_len = len; | |
ep->xfer_count = 0; | |
ep->is_in = 0; | |
ep->num = ep_addr & 0x7F; | |
if (hpcd->Init.dma_enable == 1) | |
{ | |
ep->dma_addr = (uint32_t)pBuf; | |
} | |
__HAL_LOCK(hpcd); | |
if ((ep_addr & 0x7F) == 0 ) | |
{ | |
USB_EP0StartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable); | |
} | |
else | |
{ | |
USB_EPStartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable); | |
} | |
__HAL_UNLOCK(hpcd); | |
return HAL_OK; | |
} | |
/** | |
* @brief Get Received Data Size. | |
* @param hpcd: PCD handle | |
* @param ep_addr: endpoint address | |
* @retval Data Size | |
*/ | |
uint16_t HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr) | |
{ | |
return hpcd->OUT_ep[ep_addr & 0x7F].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 | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len) | |
{ | |
USB_OTG_EPTypeDef *ep; | |
ep = &hpcd->IN_ep[ep_addr & 0x7F]; | |
/*setup and start the Xfer */ | |
ep->xfer_buff = pBuf; | |
ep->xfer_len = len; | |
ep->xfer_count = 0; | |
ep->is_in = 1; | |
ep->num = ep_addr & 0x7F; | |
if (hpcd->Init.dma_enable == 1) | |
{ | |
ep->dma_addr = (uint32_t)pBuf; | |
} | |
__HAL_LOCK(hpcd); | |
if ((ep_addr & 0x7F) == 0 ) | |
{ | |
USB_EP0StartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable); | |
} | |
else | |
{ | |
USB_EPStartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable); | |
} | |
__HAL_UNLOCK(hpcd); | |
return HAL_OK; | |
} | |
/** | |
* @brief Set a STALL condition over an endpoint. | |
* @param hpcd: PCD handle | |
* @param ep_addr: endpoint address | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr) | |
{ | |
USB_OTG_EPTypeDef *ep; | |
if ((0x80 & ep_addr) == 0x80) | |
{ | |
ep = &hpcd->IN_ep[ep_addr & 0x7F]; | |
} | |
else | |
{ | |
ep = &hpcd->OUT_ep[ep_addr]; | |
} | |
ep->is_stall = 1; | |
ep->num = ep_addr & 0x7F; | |
ep->is_in = ((ep_addr & 0x80) == 0x80); | |
__HAL_LOCK(hpcd); | |
USB_EPSetStall(hpcd->Instance , ep); | |
if((ep_addr & 0x7F) == 0) | |
{ | |
USB_EP0_OutStart(hpcd->Instance, hpcd->Init.dma_enable, (uint8_t *)hpcd->Setup); | |
} | |
__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 | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr) | |
{ | |
USB_OTG_EPTypeDef *ep; | |
if ((0x80 & ep_addr) == 0x80) | |
{ | |
ep = &hpcd->IN_ep[ep_addr & 0x7F]; | |
} | |
else | |
{ | |
ep = &hpcd->OUT_ep[ep_addr]; | |
} | |
ep->is_stall = 0; | |
ep->num = ep_addr & 0x7F; | |
ep->is_in = ((ep_addr & 0x80) == 0x80); | |
__HAL_LOCK(hpcd); | |
USB_EPClearStall(hpcd->Instance , ep); | |
__HAL_UNLOCK(hpcd); | |
return HAL_OK; | |
} | |
/** | |
* @brief Flush an endpoint. | |
* @param hpcd: PCD handle | |
* @param ep_addr: endpoint address | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr) | |
{ | |
__HAL_LOCK(hpcd); | |
if ((ep_addr & 0x80) == 0x80) | |
{ | |
USB_FlushTxFifo(hpcd->Instance, ep_addr & 0x7F); | |
} | |
else | |
{ | |
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) | |
{ | |
USB_OTG_GlobalTypeDef *USBx = hpcd->Instance; | |
if((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS) | |
{ | |
/* Activate Remote wakeup signaling */ | |
USBx_DEVICE->DCTL |= USB_OTG_DCTL_RWUSIG; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief De-activate remote wakeup signalling. | |
* @param hpcd: PCD handle | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd) | |
{ | |
USB_OTG_GlobalTypeDef *USBx = hpcd->Instance; | |
/* De-activate Remote wakeup signaling */ | |
USBx_DEVICE->DCTL &= ~(USB_OTG_DCTL_RWUSIG); | |
return HAL_OK; | |
} | |
/** | |
* @} | |
*/ | |
/** @defgroup PCD_Exported_Functions_Group4 Peripheral State functions | |
* @brief Peripheral State functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Peripheral State functions ##### | |
=============================================================================== | |
[..] | |
This subsection permits to get in run-time the status of the peripheral | |
and the data flow. | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Return the PCD handle state. | |
* @param hpcd: PCD handle | |
* @retval HAL state | |
*/ | |
PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd) | |
{ | |
return hpcd->State; | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/** @addtogroup PCD_Private_Functions | |
* @{ | |
*/ | |
/** | |
* @brief Check FIFO for the next packet to be loaded. | |
* @param hpcd: PCD handle | |
* @param epnum : endpoint number | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum) | |
{ | |
USB_OTG_GlobalTypeDef *USBx = hpcd->Instance; | |
USB_OTG_EPTypeDef *ep; | |
int32_t len = 0; | |
uint32_t len32b; | |
uint32_t fifoemptymsk = 0; | |
ep = &hpcd->IN_ep[epnum]; | |
len = ep->xfer_len - ep->xfer_count; | |
if (len > ep->maxpacket) | |
{ | |
len = ep->maxpacket; | |
} | |
len32b = (len + 3) / 4; | |
while ( (USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) > len32b && | |
ep->xfer_count < ep->xfer_len && | |
ep->xfer_len != 0) | |
{ | |
/* Write the FIFO */ | |
len = ep->xfer_len - ep->xfer_count; | |
if (len > ep->maxpacket) | |
{ | |
len = ep->maxpacket; | |
} | |
len32b = (len + 3) / 4; | |
USB_WritePacket(USBx, ep->xfer_buff, epnum, len, hpcd->Init.dma_enable); | |
ep->xfer_buff += len; | |
ep->xfer_count += len; | |
} | |
if(len <= 0) | |
{ | |
fifoemptymsk = 0x1 << epnum; | |
USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @} | |
*/ | |
#endif /* HAL_PCD_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |