/** | |
****************************************************************************** | |
* @file stm32f7xx_ll_usb.c | |
* @author MCD Application Team | |
* @version V1.2.0 | |
* @date 30-December-2016 | |
* @brief USB Low Layer HAL module driver. | |
* | |
* This file provides firmware functions to manage the following | |
* functionalities of the USB Peripheral Controller: | |
* + Initialization/de-initialization functions | |
* + I/O operation functions | |
* + Peripheral Control functions | |
* + Peripheral State functions | |
* | |
@verbatim | |
============================================================================== | |
##### How to use this driver ##### | |
============================================================================== | |
[..] | |
(#) Fill parameters of Init structure in USB_OTG_CfgTypeDef structure. | |
(#) Call USB_CoreInit() API to initialize the USB Core peripheral. | |
(#) The upper HAL HCD/PCD driver will call the right routines for its internal processes. | |
@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_LL_USB_DRIVER | |
* @{ | |
*/ | |
#if defined (HAL_PCD_MODULE_ENABLED) || defined (HAL_HCD_MODULE_ENABLED) | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/* Private macro -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/* Private functions ---------------------------------------------------------*/ | |
static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx); | |
#ifdef USB_HS_PHYC | |
static HAL_StatusTypeDef USB_HS_PHYCInit(USB_OTG_GlobalTypeDef *USBx); | |
#endif | |
/* Exported functions --------------------------------------------------------*/ | |
/** @defgroup LL_USB_Exported_Functions USB Low Layer Exported Functions | |
* @{ | |
*/ | |
/** @defgroup LL_USB_Group1 Initialization/de-initialization functions | |
* @brief Initialization and Configuration functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Initialization/de-initialization functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Initializes the USB Core | |
* @param USBx: USB Instance | |
* @param cfg : pointer to a USB_OTG_CfgTypeDef structure that contains | |
* the configuration information for the specified USBx peripheral. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_CoreInit(USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg) | |
{ | |
if (cfg.phy_itface == USB_OTG_ULPI_PHY) | |
{ | |
USBx->GCCFG &= ~(USB_OTG_GCCFG_PWRDWN); | |
/* Init The ULPI Interface */ | |
USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_TSDPS | USB_OTG_GUSBCFG_ULPIFSLS | USB_OTG_GUSBCFG_PHYSEL); | |
/* Select vbus source */ | |
USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_ULPIEVBUSD | USB_OTG_GUSBCFG_ULPIEVBUSI); | |
if(cfg.use_external_vbus == 1) | |
{ | |
USBx->GUSBCFG |= USB_OTG_GUSBCFG_ULPIEVBUSD; | |
} | |
/* Reset after a PHY select */ | |
USB_CoreReset(USBx); | |
} | |
#ifdef USB_HS_PHYC | |
else if (cfg.phy_itface == USB_OTG_HS_EMBEDDED_PHY) | |
{ | |
USBx->GCCFG &= ~(USB_OTG_GCCFG_PWRDWN); | |
/* Init The UTMI Interface */ | |
USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_TSDPS | USB_OTG_GUSBCFG_ULPIFSLS | USB_OTG_GUSBCFG_PHYSEL); | |
/* Select vbus source */ | |
USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_ULPIEVBUSD | USB_OTG_GUSBCFG_ULPIEVBUSI); | |
/* Select UTMI Interace */ | |
USBx->GUSBCFG &= ~ USB_OTG_GUSBCFG_ULPI_UTMI_SEL; | |
USBx->GCCFG |= USB_OTG_GCCFG_PHYHSEN; | |
/* Enables control of a High Speed USB PHY */ | |
USB_HS_PHYCInit(USBx); | |
if(cfg.use_external_vbus == 1) | |
{ | |
USBx->GUSBCFG |= USB_OTG_GUSBCFG_ULPIEVBUSD; | |
} | |
/* Reset after a PHY select */ | |
USB_CoreReset(USBx); | |
} | |
#endif | |
else /* FS interface (embedded Phy) */ | |
{ | |
/* Select FS Embedded PHY */ | |
USBx->GUSBCFG |= USB_OTG_GUSBCFG_PHYSEL; | |
/* Reset after a PHY select and set Host mode */ | |
USB_CoreReset(USBx); | |
/* Deactivate the power down*/ | |
USBx->GCCFG = USB_OTG_GCCFG_PWRDWN; | |
} | |
if(cfg.dma_enable == ENABLE) | |
{ | |
USBx->GAHBCFG |= USB_OTG_GAHBCFG_HBSTLEN_2; | |
USBx->GAHBCFG |= USB_OTG_GAHBCFG_DMAEN; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_EnableGlobalInt | |
* Enables the controller's Global Int in the AHB Config reg | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EnableGlobalInt(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
USBx->GAHBCFG |= USB_OTG_GAHBCFG_GINT; | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_DisableGlobalInt | |
* Disable the controller's Global Int in the AHB Config reg | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DisableGlobalInt(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
USBx->GAHBCFG &= ~USB_OTG_GAHBCFG_GINT; | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_SetCurrentMode : Set functional mode | |
* @param USBx : Selected device | |
* @param mode : current core mode | |
* This parameter can be one of these values: | |
* @arg USB_OTG_DEVICE_MODE: Peripheral mode | |
* @arg USB_OTG_HOST_MODE: Host mode | |
* @arg USB_OTG_DRD_MODE: Dual Role Device mode | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_SetCurrentMode(USB_OTG_GlobalTypeDef *USBx , USB_OTG_ModeTypeDef mode) | |
{ | |
USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_FHMOD | USB_OTG_GUSBCFG_FDMOD); | |
if ( mode == USB_OTG_HOST_MODE) | |
{ | |
USBx->GUSBCFG |= USB_OTG_GUSBCFG_FHMOD; | |
} | |
else if ( mode == USB_OTG_DEVICE_MODE) | |
{ | |
USBx->GUSBCFG |= USB_OTG_GUSBCFG_FDMOD; | |
} | |
HAL_Delay(50); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_DevInit : Initializes the USB_OTG controller registers | |
* for device mode | |
* @param USBx : Selected device | |
* @param cfg : pointer to a USB_OTG_CfgTypeDef structure that contains | |
* the configuration information for the specified USBx peripheral. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DevInit (USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg) | |
{ | |
uint32_t i = 0; | |
/*Activate VBUS Sensing B */ | |
USBx->GCCFG |= USB_OTG_GCCFG_VBDEN; | |
if (cfg.vbus_sensing_enable == 0) | |
{ | |
/* Deactivate VBUS Sensing B */ | |
USBx->GCCFG &= ~ USB_OTG_GCCFG_VBDEN; | |
/* B-peripheral session valid override enable*/ | |
USBx->GOTGCTL |= USB_OTG_GOTGCTL_BVALOEN; | |
USBx->GOTGCTL |= USB_OTG_GOTGCTL_BVALOVAL; | |
} | |
/* Restart the Phy Clock */ | |
USBx_PCGCCTL = 0; | |
/* Device mode configuration */ | |
USBx_DEVICE->DCFG |= DCFG_FRAME_INTERVAL_80; | |
if(cfg.phy_itface == USB_OTG_ULPI_PHY) | |
{ | |
if(cfg.speed == USB_OTG_SPEED_HIGH) | |
{ | |
/* Set High speed phy */ | |
USB_SetDevSpeed (USBx , USB_OTG_SPEED_HIGH); | |
} | |
else | |
{ | |
/* set High speed phy in Full speed mode */ | |
USB_SetDevSpeed (USBx , USB_OTG_SPEED_HIGH_IN_FULL); | |
} | |
} | |
else if(cfg.phy_itface == USB_OTG_HS_EMBEDDED_PHY) | |
{ | |
if(cfg.speed == USB_OTG_SPEED_HIGH) | |
{ | |
/* Set High speed phy */ | |
USB_SetDevSpeed (USBx , USB_OTG_SPEED_HIGH); | |
} | |
else | |
{ | |
/* set High speed phy in Full speed mode */ | |
USB_SetDevSpeed (USBx , USB_OTG_SPEED_HIGH_IN_FULL); | |
} | |
} | |
else | |
{ | |
/* Set Full speed phy */ | |
USB_SetDevSpeed (USBx , USB_OTG_SPEED_FULL); | |
} | |
/* Flush the FIFOs */ | |
USB_FlushTxFifo(USBx , 0x10); /* all Tx FIFOs */ | |
USB_FlushRxFifo(USBx); | |
/* Clear all pending Device Interrupts */ | |
USBx_DEVICE->DIEPMSK = 0; | |
USBx_DEVICE->DOEPMSK = 0; | |
USBx_DEVICE->DAINT = 0xFFFFFFFF; | |
USBx_DEVICE->DAINTMSK = 0; | |
for (i = 0; i < cfg.dev_endpoints; i++) | |
{ | |
if ((USBx_INEP(i)->DIEPCTL & USB_OTG_DIEPCTL_EPENA) == USB_OTG_DIEPCTL_EPENA) | |
{ | |
USBx_INEP(i)->DIEPCTL = (USB_OTG_DIEPCTL_EPDIS | USB_OTG_DIEPCTL_SNAK); | |
} | |
else | |
{ | |
USBx_INEP(i)->DIEPCTL = 0; | |
} | |
USBx_INEP(i)->DIEPTSIZ = 0; | |
USBx_INEP(i)->DIEPINT = 0xFF; | |
} | |
for (i = 0; i < cfg.dev_endpoints; i++) | |
{ | |
if ((USBx_OUTEP(i)->DOEPCTL & USB_OTG_DOEPCTL_EPENA) == USB_OTG_DOEPCTL_EPENA) | |
{ | |
USBx_OUTEP(i)->DOEPCTL = (USB_OTG_DOEPCTL_EPDIS | USB_OTG_DOEPCTL_SNAK); | |
} | |
else | |
{ | |
USBx_OUTEP(i)->DOEPCTL = 0; | |
} | |
USBx_OUTEP(i)->DOEPTSIZ = 0; | |
USBx_OUTEP(i)->DOEPINT = 0xFF; | |
} | |
USBx_DEVICE->DIEPMSK &= ~(USB_OTG_DIEPMSK_TXFURM); | |
if (cfg.dma_enable == 1) | |
{ | |
/*Set threshold parameters */ | |
USBx_DEVICE->DTHRCTL = (USB_OTG_DTHRCTL_TXTHRLEN_6 | USB_OTG_DTHRCTL_RXTHRLEN_6); | |
USBx_DEVICE->DTHRCTL |= (USB_OTG_DTHRCTL_RXTHREN | USB_OTG_DTHRCTL_ISOTHREN | USB_OTG_DTHRCTL_NONISOTHREN); | |
i= USBx_DEVICE->DTHRCTL; | |
} | |
/* Disable all interrupts. */ | |
USBx->GINTMSK = 0; | |
/* Clear any pending interrupts */ | |
USBx->GINTSTS = 0xBFFFFFFF; | |
/* Enable the common interrupts */ | |
if (cfg.dma_enable == DISABLE) | |
{ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_RXFLVLM; | |
} | |
/* Enable interrupts matching to the Device mode ONLY */ | |
USBx->GINTMSK |= (USB_OTG_GINTMSK_USBSUSPM | USB_OTG_GINTMSK_USBRST |\ | |
USB_OTG_GINTMSK_ENUMDNEM | USB_OTG_GINTMSK_IEPINT |\ | |
USB_OTG_GINTMSK_OEPINT | USB_OTG_GINTMSK_IISOIXFRM|\ | |
USB_OTG_GINTMSK_PXFRM_IISOOXFRM | USB_OTG_GINTMSK_WUIM); | |
if(cfg.Sof_enable) | |
{ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_SOFM; | |
} | |
if (cfg.vbus_sensing_enable == ENABLE) | |
{ | |
USBx->GINTMSK |= (USB_OTG_GINTMSK_SRQIM | USB_OTG_GINTMSK_OTGINT); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_OTG_FlushTxFifo : Flush a Tx FIFO | |
* @param USBx : Selected device | |
* @param num : FIFO number | |
* This parameter can be a value from 1 to 15 | |
15 means Flush all Tx FIFOs | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_FlushTxFifo (USB_OTG_GlobalTypeDef *USBx, uint32_t num ) | |
{ | |
uint32_t count = 0; | |
USBx->GRSTCTL = ( USB_OTG_GRSTCTL_TXFFLSH |(uint32_t)( num << 6)); | |
do | |
{ | |
if (++count > 200000) | |
{ | |
return HAL_TIMEOUT; | |
} | |
} | |
while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_TXFFLSH) == USB_OTG_GRSTCTL_TXFFLSH); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_FlushRxFifo : Flush Rx FIFO | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_FlushRxFifo(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t count = 0; | |
USBx->GRSTCTL = USB_OTG_GRSTCTL_RXFFLSH; | |
do | |
{ | |
if (++count > 200000) | |
{ | |
return HAL_TIMEOUT; | |
} | |
} | |
while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_RXFFLSH) == USB_OTG_GRSTCTL_RXFFLSH); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_SetDevSpeed :Initializes the DevSpd field of DCFG register | |
* depending the PHY type and the enumeration speed of the device. | |
* @param USBx : Selected device | |
* @param speed : device speed | |
* This parameter can be one of these values: | |
* @arg USB_OTG_SPEED_HIGH: High speed mode | |
* @arg USB_OTG_SPEED_HIGH_IN_FULL: High speed core in Full Speed mode | |
* @arg USB_OTG_SPEED_FULL: Full speed mode | |
* @arg USB_OTG_SPEED_LOW: Low speed mode | |
* @retval Hal status | |
*/ | |
HAL_StatusTypeDef USB_SetDevSpeed(USB_OTG_GlobalTypeDef *USBx , uint8_t speed) | |
{ | |
USBx_DEVICE->DCFG |= speed; | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_GetDevSpeed :Return the Dev Speed | |
* @param USBx : Selected device | |
* @retval speed : device speed | |
* This parameter can be one of these values: | |
* @arg USB_OTG_SPEED_HIGH: High speed mode | |
* @arg USB_OTG_SPEED_FULL: Full speed mode | |
* @arg USB_OTG_SPEED_LOW: Low speed mode | |
*/ | |
uint8_t USB_GetDevSpeed(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint8_t speed = 0; | |
if((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ) | |
{ | |
speed = USB_OTG_SPEED_HIGH; | |
} | |
else if (((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ)|| | |
((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_FS_PHY_48MHZ)) | |
{ | |
speed = USB_OTG_SPEED_FULL; | |
} | |
else if((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_LS_PHY_6MHZ) | |
{ | |
speed = USB_OTG_SPEED_LOW; | |
} | |
return speed; | |
} | |
/** | |
* @brief Activate and configure an endpoint | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_ActivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep) | |
{ | |
if (ep->is_in == 1) | |
{ | |
USBx_DEVICE->DAINTMSK |= USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num))); | |
if (((USBx_INEP(ep->num)->DIEPCTL) & USB_OTG_DIEPCTL_USBAEP) == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL |= ((ep->maxpacket & USB_OTG_DIEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
((ep->num) << 22 ) | (USB_OTG_DIEPCTL_SD0PID_SEVNFRM) | (USB_OTG_DIEPCTL_USBAEP)); | |
} | |
} | |
else | |
{ | |
USBx_DEVICE->DAINTMSK |= USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16); | |
if (((USBx_OUTEP(ep->num)->DOEPCTL) & USB_OTG_DOEPCTL_USBAEP) == 0) | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL |= ((ep->maxpacket & USB_OTG_DOEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
(USB_OTG_DIEPCTL_SD0PID_SEVNFRM)| (USB_OTG_DOEPCTL_USBAEP)); | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Activate and configure a dedicated endpoint | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_ActivateDedicatedEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep) | |
{ | |
static __IO uint32_t debug = 0; | |
/* Read DEPCTLn register */ | |
if (ep->is_in == 1) | |
{ | |
if (((USBx_INEP(ep->num)->DIEPCTL) & USB_OTG_DIEPCTL_USBAEP) == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL |= ((ep->maxpacket & USB_OTG_DIEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
((ep->num) << 22 ) | (USB_OTG_DIEPCTL_SD0PID_SEVNFRM) | (USB_OTG_DIEPCTL_USBAEP)); | |
} | |
debug |= ((ep->maxpacket & USB_OTG_DIEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
((ep->num) << 22 ) | (USB_OTG_DIEPCTL_SD0PID_SEVNFRM) | (USB_OTG_DIEPCTL_USBAEP)); | |
USBx_DEVICE->DEACHMSK |= USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num))); | |
} | |
else | |
{ | |
if (((USBx_OUTEP(ep->num)->DOEPCTL) & USB_OTG_DOEPCTL_USBAEP) == 0) | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL |= ((ep->maxpacket & USB_OTG_DOEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
((ep->num) << 22 ) | (USB_OTG_DOEPCTL_USBAEP)); | |
debug = (uint32_t)(((uint32_t )USBx) + USB_OTG_OUT_ENDPOINT_BASE + (0)*USB_OTG_EP_REG_SIZE); | |
debug = (uint32_t )&USBx_OUTEP(ep->num)->DOEPCTL; | |
debug |= ((ep->maxpacket & USB_OTG_DOEPCTL_MPSIZ ) | (ep->type << 18 ) |\ | |
((ep->num) << 22 ) | (USB_OTG_DOEPCTL_USBAEP)); | |
} | |
USBx_DEVICE->DEACHMSK |= USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief De-activate and de-initialize an endpoint | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DeactivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep) | |
{ | |
/* Read DEPCTLn register */ | |
if (ep->is_in == 1) | |
{ | |
USBx_DEVICE->DEACHMSK &= ~(USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num)))); | |
USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num)))); | |
USBx_INEP(ep->num)->DIEPCTL &= ~ USB_OTG_DIEPCTL_USBAEP; | |
} | |
else | |
{ | |
USBx_DEVICE->DEACHMSK &= ~(USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16)); | |
USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16)); | |
USBx_OUTEP(ep->num)->DOEPCTL &= ~USB_OTG_DOEPCTL_USBAEP; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief De-activate and de-initialize a dedicated endpoint | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DeactivateDedicatedEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep) | |
{ | |
/* Read DEPCTLn register */ | |
if (ep->is_in == 1) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL &= ~ USB_OTG_DIEPCTL_USBAEP; | |
USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num)))); | |
} | |
else | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL &= ~USB_OTG_DOEPCTL_USBAEP; | |
USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16)); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_EPStartXfer : setup and starts a transfer over an EP | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EPStartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep, uint8_t dma) | |
{ | |
uint16_t pktcnt = 0; | |
/* IN endpoint */ | |
if (ep->is_in == 1) | |
{ | |
/* Zero Length Packet? */ | |
if (ep->xfer_len == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19)) ; | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ); | |
} | |
else | |
{ | |
/* Program the transfer size and packet count | |
* as follows: xfersize = N * maxpacket + | |
* short_packet pktcnt = N + (short_packet | |
* exist ? 1 : 0) | |
*/ | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ); | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (((ep->xfer_len + ep->maxpacket -1)/ ep->maxpacket) << 19)) ; | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_XFRSIZ & ep->xfer_len); | |
if (ep->type == EP_TYPE_ISOC) | |
{ | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_MULCNT); | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_MULCNT & (1 << 29)); | |
} | |
} | |
if (dma == 1) | |
{ | |
USBx_INEP(ep->num)->DIEPDMA = (uint32_t)(ep->dma_addr); | |
} | |
else | |
{ | |
if (ep->type != EP_TYPE_ISOC) | |
{ | |
/* Enable the Tx FIFO Empty Interrupt for this EP */ | |
if (ep->xfer_len > 0) | |
{ | |
USBx_DEVICE->DIEPEMPMSK |= 1 << ep->num; | |
} | |
} | |
} | |
if (ep->type == EP_TYPE_ISOC) | |
{ | |
if ((USBx_DEVICE->DSTS & ( 1 << 8 )) == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SODDFRM; | |
} | |
else | |
{ | |
USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SD0PID_SEVNFRM; | |
} | |
} | |
/* EP enable, IN data in FIFO */ | |
USBx_INEP(ep->num)->DIEPCTL |= (USB_OTG_DIEPCTL_CNAK | USB_OTG_DIEPCTL_EPENA); | |
if (ep->type == EP_TYPE_ISOC) | |
{ | |
USB_WritePacket(USBx, ep->xfer_buff, ep->num, ep->xfer_len, dma); | |
} | |
} | |
else /* OUT endpoint */ | |
{ | |
/* Program the transfer size and packet count as follows: | |
* pktcnt = N | |
* xfersize = N * maxpacket | |
*/ | |
USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_XFRSIZ); | |
USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_PKTCNT); | |
if (ep->xfer_len == 0) | |
{ | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & ep->maxpacket); | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19)) ; | |
} | |
else | |
{ | |
pktcnt = (ep->xfer_len + ep->maxpacket -1)/ ep->maxpacket; | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (pktcnt << 19)); | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & (ep->maxpacket * pktcnt)); | |
} | |
if (dma == 1) | |
{ | |
USBx_OUTEP(ep->num)->DOEPDMA = (uint32_t)ep->xfer_buff; | |
} | |
if (ep->type == EP_TYPE_ISOC) | |
{ | |
if ((USBx_DEVICE->DSTS & ( 1 << 8 )) == 0) | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SODDFRM; | |
} | |
else | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SD0PID_SEVNFRM; | |
} | |
} | |
/* EP enable */ | |
USBx_OUTEP(ep->num)->DOEPCTL |= (USB_OTG_DOEPCTL_CNAK | USB_OTG_DOEPCTL_EPENA); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_EP0StartXfer : setup and starts a transfer over the EP 0 | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EP0StartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep, uint8_t dma) | |
{ | |
/* IN endpoint */ | |
if (ep->is_in == 1) | |
{ | |
/* Zero Length Packet? */ | |
if (ep->xfer_len == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19)) ; | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ); | |
} | |
else | |
{ | |
/* Program the transfer size and packet count | |
* as follows: xfersize = N * maxpacket + | |
* short_packet pktcnt = N + (short_packet | |
* exist ? 1 : 0) | |
*/ | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ); | |
USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); | |
if(ep->xfer_len > ep->maxpacket) | |
{ | |
ep->xfer_len = ep->maxpacket; | |
} | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19)) ; | |
USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_XFRSIZ & ep->xfer_len); | |
} | |
/* EP enable, IN data in FIFO */ | |
USBx_INEP(ep->num)->DIEPCTL |= (USB_OTG_DIEPCTL_CNAK | USB_OTG_DIEPCTL_EPENA); | |
if (dma == 1) | |
{ | |
USBx_INEP(ep->num)->DIEPDMA = (uint32_t)(ep->dma_addr); | |
} | |
else | |
{ | |
/* Enable the Tx FIFO Empty Interrupt for this EP */ | |
if (ep->xfer_len > 0U) | |
{ | |
USBx_DEVICE->DIEPEMPMSK |= 1U << (ep->num); | |
} | |
} | |
} | |
else /* OUT endpoint */ | |
{ | |
/* Program the transfer size and packet count as follows: | |
* pktcnt = N | |
* xfersize = N * maxpacket | |
*/ | |
USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_XFRSIZ); | |
USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_PKTCNT); | |
if (ep->xfer_len > 0) | |
{ | |
ep->xfer_len = ep->maxpacket; | |
} | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19)); | |
USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & (ep->maxpacket)); | |
if (dma == 1) | |
{ | |
USBx_OUTEP(ep->num)->DOEPDMA = (uint32_t)(ep->xfer_buff); | |
} | |
/* EP enable */ | |
USBx_OUTEP(ep->num)->DOEPCTL |= (USB_OTG_DOEPCTL_CNAK | USB_OTG_DOEPCTL_EPENA); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_WritePacket : Writes a packet into the Tx FIFO associated | |
* with the EP/channel | |
* @param USBx : Selected device | |
* @param src : pointer to source buffer | |
* @param ch_ep_num : endpoint or host channel number | |
* @param len : Number of bytes to write | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_WritePacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *src, uint8_t ch_ep_num, uint16_t len, uint8_t dma) | |
{ | |
uint32_t count32b= 0 , i= 0; | |
if (dma == 0) | |
{ | |
count32b = (len + 3) / 4; | |
for (i = 0; i < count32b; i++, src += 4) | |
{ | |
USBx_DFIFO(ch_ep_num) = *((__packed uint32_t *)src); | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_ReadPacket : read a packet from the Tx FIFO associated | |
* with the EP/channel | |
* @param USBx : Selected device | |
* @param src : source pointer | |
* @param ch_ep_num : endpoint or host channel number | |
* @param len : Number of bytes to read | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @retval pointer to destination buffer | |
*/ | |
void *USB_ReadPacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *dest, uint16_t len) | |
{ | |
uint32_t i=0; | |
uint32_t count32b = (len + 3) / 4; | |
for ( i = 0; i < count32b; i++, dest += 4 ) | |
{ | |
*(__packed uint32_t *)dest = USBx_DFIFO(0); | |
} | |
return ((void *)dest); | |
} | |
/** | |
* @brief USB_EPSetStall : set a stall condition over an EP | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EPSetStall(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep) | |
{ | |
if (ep->is_in == 1) | |
{ | |
if (((USBx_INEP(ep->num)->DIEPCTL) & USB_OTG_DIEPCTL_EPENA) == 0) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL &= ~(USB_OTG_DIEPCTL_EPDIS); | |
} | |
USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_STALL; | |
} | |
else | |
{ | |
if (((USBx_OUTEP(ep->num)->DOEPCTL) & USB_OTG_DOEPCTL_EPENA) == 0) | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL &= ~(USB_OTG_DOEPCTL_EPDIS); | |
} | |
USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_STALL; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_EPClearStall : Clear a stall condition over an EP | |
* @param USBx : Selected device | |
* @param ep: pointer to endpoint structure | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EPClearStall(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep) | |
{ | |
if (ep->is_in == 1) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL &= ~USB_OTG_DIEPCTL_STALL; | |
if (ep->type == EP_TYPE_INTR || ep->type == EP_TYPE_BULK) | |
{ | |
USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SD0PID_SEVNFRM; /* DATA0 */ | |
} | |
} | |
else | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL; | |
if (ep->type == EP_TYPE_INTR || ep->type == EP_TYPE_BULK) | |
{ | |
USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SD0PID_SEVNFRM; /* DATA0 */ | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_StopDevice : Stop the usb device mode | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_StopDevice(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t i; | |
/* Clear Pending interrupt */ | |
for (i = 0; i < 15 ; i++) | |
{ | |
USBx_INEP(i)->DIEPINT = 0xFF; | |
USBx_OUTEP(i)->DOEPINT = 0xFF; | |
} | |
USBx_DEVICE->DAINT = 0xFFFFFFFF; | |
/* Clear interrupt masks */ | |
USBx_DEVICE->DIEPMSK = 0; | |
USBx_DEVICE->DOEPMSK = 0; | |
USBx_DEVICE->DAINTMSK = 0; | |
/* Flush the FIFO */ | |
USB_FlushRxFifo(USBx); | |
USB_FlushTxFifo(USBx , 0x10 ); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_SetDevAddress : Stop the usb device mode | |
* @param USBx : Selected device | |
* @param address : new device address to be assigned | |
* This parameter can be a value from 0 to 255 | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_SetDevAddress (USB_OTG_GlobalTypeDef *USBx, uint8_t address) | |
{ | |
USBx_DEVICE->DCFG &= ~ (USB_OTG_DCFG_DAD); | |
USBx_DEVICE->DCFG |= (address << 4) & USB_OTG_DCFG_DAD ; | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_DevConnect : Connect the USB device by enabling the pull-up/pull-down | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DevConnect (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_SDIS ; | |
HAL_Delay(3); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_DevDisconnect : Disconnect the USB device by disabling the pull-up/pull-down | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DevDisconnect (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
USBx_DEVICE->DCTL |= USB_OTG_DCTL_SDIS ; | |
HAL_Delay(3); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_ReadInterrupts: return the global USB interrupt status | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
uint32_t USB_ReadInterrupts (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t v = 0; | |
v = USBx->GINTSTS; | |
v &= USBx->GINTMSK; | |
return v; | |
} | |
/** | |
* @brief USB_ReadDevAllOutEpInterrupt: return the USB device OUT endpoints interrupt status | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
uint32_t USB_ReadDevAllOutEpInterrupt (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t v; | |
v = USBx_DEVICE->DAINT; | |
v &= USBx_DEVICE->DAINTMSK; | |
return ((v & 0xffff0000) >> 16); | |
} | |
/** | |
* @brief USB_ReadDevAllInEpInterrupt: return the USB device IN endpoints interrupt status | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
uint32_t USB_ReadDevAllInEpInterrupt (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t v; | |
v = USBx_DEVICE->DAINT; | |
v &= USBx_DEVICE->DAINTMSK; | |
return ((v & 0xFFFF)); | |
} | |
/** | |
* @brief Returns Device OUT EP Interrupt register | |
* @param USBx : Selected device | |
* @param epnum : endpoint number | |
* This parameter can be a value from 0 to 15 | |
* @retval Device OUT EP Interrupt register | |
*/ | |
uint32_t USB_ReadDevOutEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum) | |
{ | |
uint32_t v; | |
v = USBx_OUTEP(epnum)->DOEPINT; | |
v &= USBx_DEVICE->DOEPMSK; | |
return v; | |
} | |
/** | |
* @brief Returns Device IN EP Interrupt register | |
* @param USBx : Selected device | |
* @param epnum : endpoint number | |
* This parameter can be a value from 0 to 15 | |
* @retval Device IN EP Interrupt register | |
*/ | |
uint32_t USB_ReadDevInEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum) | |
{ | |
uint32_t v, msk, emp; | |
msk = USBx_DEVICE->DIEPMSK; | |
emp = USBx_DEVICE->DIEPEMPMSK; | |
msk |= ((emp >> epnum) & 0x1) << 7; | |
v = USBx_INEP(epnum)->DIEPINT & msk; | |
return v; | |
} | |
/** | |
* @brief USB_ClearInterrupts: clear a USB interrupt | |
* @param USBx : Selected device | |
* @param interrupt : interrupt flag | |
* @retval None | |
*/ | |
void USB_ClearInterrupts (USB_OTG_GlobalTypeDef *USBx, uint32_t interrupt) | |
{ | |
USBx->GINTSTS |= interrupt; | |
} | |
/** | |
* @brief Returns USB core mode | |
* @param USBx : Selected device | |
* @retval return core mode : Host or Device | |
* This parameter can be one of these values: | |
* 0 : Host | |
* 1 : Device | |
*/ | |
uint32_t USB_GetMode(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
return ((USBx->GINTSTS ) & 0x1); | |
} | |
/** | |
* @brief Activate EP0 for Setup transactions | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_ActivateSetup (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
/* Set the MPS of the IN EP based on the enumeration speed */ | |
USBx_INEP(0)->DIEPCTL &= ~USB_OTG_DIEPCTL_MPSIZ; | |
if((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_LS_PHY_6MHZ) | |
{ | |
USBx_INEP(0)->DIEPCTL |= 3; | |
} | |
USBx_DEVICE->DCTL |= USB_OTG_DCTL_CGINAK; | |
return HAL_OK; | |
} | |
/** | |
* @brief Prepare the EP0 to start the first control setup | |
* @param USBx : Selected device | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @param psetup : pointer to setup packet | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_EP0_OutStart(USB_OTG_GlobalTypeDef *USBx, uint8_t dma, uint8_t *psetup) | |
{ | |
USBx_OUTEP(0)->DOEPTSIZ = 0; | |
USBx_OUTEP(0)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19)) ; | |
USBx_OUTEP(0)->DOEPTSIZ |= (3 * 8); | |
USBx_OUTEP(0)->DOEPTSIZ |= USB_OTG_DOEPTSIZ_STUPCNT; | |
if (dma == 1) | |
{ | |
USBx_OUTEP(0)->DOEPDMA = (uint32_t)psetup; | |
/* EP enable */ | |
USBx_OUTEP(0)->DOEPCTL = 0x80008000; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Reset the USB Core (needed after USB clock settings change) | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t count = 0; | |
/* Wait for AHB master IDLE state. */ | |
do | |
{ | |
if (++count > 200000) | |
{ | |
return HAL_TIMEOUT; | |
} | |
} | |
while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0); | |
/* Core Soft Reset */ | |
count = 0; | |
USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST; | |
do | |
{ | |
if (++count > 200000) | |
{ | |
return HAL_TIMEOUT; | |
} | |
} | |
while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST); | |
return HAL_OK; | |
} | |
#ifdef USB_HS_PHYC | |
/** | |
* @brief Enables control of a High Speed USB PHYÂ’s | |
* Init the low level hardware : GPIO, CLOCK, NVIC... | |
* @param USBx : Selected device | |
* @retval HAL status | |
*/ | |
static HAL_StatusTypeDef USB_HS_PHYCInit(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint32_t count = 0; | |
/* Enable LDO */ | |
USB_HS_PHYC->USB_HS_PHYC_LDO |= USB_HS_PHYC_LDO_ENABLE; | |
/* wait for LDO Ready */ | |
while((USB_HS_PHYC->USB_HS_PHYC_LDO & USB_HS_PHYC_LDO_STATUS) == RESET) | |
{ | |
if (++count > 200000) | |
{ | |
return HAL_TIMEOUT; | |
} | |
} | |
/* Controls PHY frequency operation selection */ | |
if (HSE_VALUE == 12000000) /* HSE = 12MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x0 << 1); | |
} | |
else if (HSE_VALUE == 12500000) /* HSE = 12.5MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x2 << 1); | |
} | |
else if (HSE_VALUE == 16000000) /* HSE = 16MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x3 << 1); | |
} | |
else if (HSE_VALUE == 24000000) /* HSE = 24MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x4 << 1); | |
} | |
else if (HSE_VALUE == 25000000) /* HSE = 25MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x5 << 1); | |
} | |
else if (HSE_VALUE == 32000000) /* HSE = 32MHz */ | |
{ | |
USB_HS_PHYC->USB_HS_PHYC_PLL = (uint32_t)(0x7 << 1); | |
} | |
/* Control the tuning interface of the High Speed PHY */ | |
USB_HS_PHYC->USB_HS_PHYC_TUNE |= USB_HS_PHYC_TUNE_VALUE; | |
/* Enable PLL internal PHY */ | |
USB_HS_PHYC->USB_HS_PHYC_PLL |= USB_HS_PHYC_PLL_PLLEN; | |
/* 2ms Delay required to get internal phy clock stable */ | |
HAL_Delay(2); | |
return HAL_OK; | |
} | |
#endif /* USB_HS_PHYC */ | |
/** | |
* @brief USB_HostInit : Initializes the USB OTG controller registers | |
* for Host mode | |
* @param USBx : Selected device | |
* @param cfg : pointer to a USB_OTG_CfgTypeDef structure that contains | |
* the configuration information for the specified USBx peripheral. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_HostInit (USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg) | |
{ | |
uint32_t i; | |
/* Restart the Phy Clock */ | |
USBx_PCGCCTL = 0; | |
/*Activate VBUS Sensing B */ | |
USBx->GCCFG |= USB_OTG_GCCFG_VBDEN; | |
/* Disable the FS/LS support mode only */ | |
if((cfg.speed == USB_OTG_SPEED_FULL)&& | |
(USBx != USB_OTG_FS)) | |
{ | |
USBx_HOST->HCFG |= USB_OTG_HCFG_FSLSS; | |
} | |
else | |
{ | |
USBx_HOST->HCFG &= ~(USB_OTG_HCFG_FSLSS); | |
} | |
/* Make sure the FIFOs are flushed. */ | |
USB_FlushTxFifo(USBx, 0x10 ); /* all Tx FIFOs */ | |
USB_FlushRxFifo(USBx); | |
/* Clear all pending HC Interrupts */ | |
for (i = 0; i < cfg.Host_channels; i++) | |
{ | |
USBx_HC(i)->HCINT = 0xFFFFFFFF; | |
USBx_HC(i)->HCINTMSK = 0; | |
} | |
/* Enable VBUS driving */ | |
USB_DriveVbus(USBx, 1); | |
HAL_Delay(200); | |
/* Disable all interrupts. */ | |
USBx->GINTMSK = 0; | |
/* Clear any pending interrupts */ | |
USBx->GINTSTS = 0xFFFFFFFF; | |
if(USBx == USB_OTG_FS) | |
{ | |
/* set Rx FIFO size */ | |
USBx->GRXFSIZ = (uint32_t )0x80; | |
USBx->DIEPTXF0_HNPTXFSIZ = (uint32_t )(((0x60 << 16)& USB_OTG_NPTXFD) | 0x80); | |
USBx->HPTXFSIZ = (uint32_t )(((0x40 << 16)& USB_OTG_HPTXFSIZ_PTXFD) | 0xE0); | |
} | |
else | |
{ | |
/* set Rx FIFO size */ | |
USBx->GRXFSIZ = (uint32_t )0x200; | |
USBx->DIEPTXF0_HNPTXFSIZ = (uint32_t )(((0x100 << 16)& USB_OTG_NPTXFD) | 0x200); | |
USBx->HPTXFSIZ = (uint32_t )(((0xE0 << 16)& USB_OTG_HPTXFSIZ_PTXFD) | 0x300); | |
} | |
/* Enable the common interrupts */ | |
if (cfg.dma_enable == DISABLE) | |
{ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_RXFLVLM; | |
} | |
/* Enable interrupts matching to the Host mode ONLY */ | |
USBx->GINTMSK |= (USB_OTG_GINTMSK_PRTIM | USB_OTG_GINTMSK_HCIM |\ | |
USB_OTG_GINTMSK_SOFM |USB_OTG_GINTSTS_DISCINT|\ | |
USB_OTG_GINTMSK_PXFRM_IISOOXFRM | USB_OTG_GINTMSK_WUIM); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_InitFSLSPClkSel : Initializes the FSLSPClkSel field of the | |
* HCFG register on the PHY type and set the right frame interval | |
* @param USBx : Selected device | |
* @param freq : clock frequency | |
* This parameter can be one of these values: | |
* HCFG_48_MHZ : Full Speed 48 MHz Clock | |
* HCFG_6_MHZ : Low Speed 6 MHz Clock | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_InitFSLSPClkSel(USB_OTG_GlobalTypeDef *USBx , uint8_t freq) | |
{ | |
USBx_HOST->HCFG &= ~(USB_OTG_HCFG_FSLSPCS); | |
USBx_HOST->HCFG |= (freq & USB_OTG_HCFG_FSLSPCS); | |
if (freq == HCFG_48_MHZ) | |
{ | |
USBx_HOST->HFIR = (uint32_t)48000; | |
} | |
else if (freq == HCFG_6_MHZ) | |
{ | |
USBx_HOST->HFIR = (uint32_t)6000; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_OTG_ResetPort : Reset Host Port | |
* @param USBx : Selected device | |
* @retval HAL status | |
* @note : (1)The application must wait at least 10 ms | |
* before clearing the reset bit. | |
*/ | |
HAL_StatusTypeDef USB_ResetPort(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
__IO uint32_t hprt0; | |
hprt0 = USBx_HPRT0; | |
hprt0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET | | |
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG); | |
USBx_HPRT0 = (USB_OTG_HPRT_PRST | hprt0); | |
HAL_Delay (100); /* See Note #1 */ | |
USBx_HPRT0 = ((~USB_OTG_HPRT_PRST) & hprt0); | |
HAL_Delay (10); | |
return HAL_OK; | |
} | |
/** | |
* @brief USB_DriveVbus : activate or de-activate vbus | |
* @param state : VBUS state | |
* This parameter can be one of these values: | |
* 0 : VBUS Active | |
* 1 : VBUS Inactive | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef USB_DriveVbus (USB_OTG_GlobalTypeDef *USBx, uint8_t state) | |
{ | |
__IO uint32_t hprt0; | |
hprt0 = USBx_HPRT0; | |
hprt0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET | | |
USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG); | |
if (((hprt0 & USB_OTG_HPRT_PPWR) == 0 ) && (state == 1 )) | |
{ | |
USBx_HPRT0 = (USB_OTG_HPRT_PPWR | hprt0); | |
} | |
if (((hprt0 & USB_OTG_HPRT_PPWR) == USB_OTG_HPRT_PPWR) && (state == 0 )) | |
{ | |
USBx_HPRT0 = ((~USB_OTG_HPRT_PPWR) & hprt0); | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Return Host Core speed | |
* @param USBx : Selected device | |
* @retval speed : Host speed | |
* This parameter can be one of these values: | |
* @arg USB_OTG_SPEED_HIGH: High speed mode | |
* @arg USB_OTG_SPEED_FULL: Full speed mode | |
* @arg USB_OTG_SPEED_LOW: Low speed mode | |
*/ | |
uint32_t USB_GetHostSpeed (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
__IO uint32_t hprt0; | |
hprt0 = USBx_HPRT0; | |
return ((hprt0 & USB_OTG_HPRT_PSPD) >> 17); | |
} | |
/** | |
* @brief Return Host Current Frame number | |
* @param USBx : Selected device | |
* @retval current frame number | |
*/ | |
uint32_t USB_GetCurrentFrame (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
return (USBx_HOST->HFNUM & USB_OTG_HFNUM_FRNUM); | |
} | |
/** | |
* @brief Initialize a host channel | |
* @param USBx : Selected device | |
* @param ch_num : Channel number | |
* This parameter can be a value from 1 to 15 | |
* @param epnum : Endpoint number | |
* This parameter can be a value from 1 to 15 | |
* @param dev_address : Current device address | |
* This parameter can be a value from 0 to 255 | |
* @param speed : Current device speed | |
* This parameter can be one of these values: | |
* @arg USB_OTG_SPEED_HIGH: High speed mode | |
* @arg USB_OTG_SPEED_FULL: Full speed mode | |
* @arg USB_OTG_SPEED_LOW: Low speed mode | |
* @param ep_type : Endpoint Type | |
* This parameter can be one of these values: | |
* @arg EP_TYPE_CTRL: Control type | |
* @arg EP_TYPE_ISOC: Isochronous type | |
* @arg EP_TYPE_BULK: Bulk type | |
* @arg EP_TYPE_INTR: Interrupt type | |
* @param mps : Max Packet Size | |
* This parameter can be a value from 0 to32K | |
* @retval HAL state | |
*/ | |
HAL_StatusTypeDef USB_HC_Init(USB_OTG_GlobalTypeDef *USBx, | |
uint8_t ch_num, | |
uint8_t epnum, | |
uint8_t dev_address, | |
uint8_t speed, | |
uint8_t ep_type, | |
uint16_t mps) | |
{ | |
/* Clear old interrupt conditions for this host channel. */ | |
USBx_HC(ch_num)->HCINT = 0xFFFFFFFF; | |
/* Enable channel interrupts required for this transfer. */ | |
switch (ep_type) | |
{ | |
case EP_TYPE_CTRL: | |
case EP_TYPE_BULK: | |
USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |\ | |
USB_OTG_HCINTMSK_STALLM |\ | |
USB_OTG_HCINTMSK_TXERRM |\ | |
USB_OTG_HCINTMSK_DTERRM |\ | |
USB_OTG_HCINTMSK_AHBERR |\ | |
USB_OTG_HCINTMSK_NAKM ; | |
if (epnum & 0x80) | |
{ | |
USBx_HC(ch_num)->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM; | |
} | |
else | |
{ | |
if(USBx != USB_OTG_FS) | |
{ | |
USBx_HC(ch_num)->HCINTMSK |= (USB_OTG_HCINTMSK_NYET | USB_OTG_HCINTMSK_ACKM); | |
} | |
} | |
break; | |
case EP_TYPE_INTR: | |
USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |\ | |
USB_OTG_HCINTMSK_STALLM |\ | |
USB_OTG_HCINTMSK_TXERRM |\ | |
USB_OTG_HCINTMSK_DTERRM |\ | |
USB_OTG_HCINTMSK_NAKM |\ | |
USB_OTG_HCINTMSK_AHBERR |\ | |
USB_OTG_HCINTMSK_FRMORM ; | |
if (epnum & 0x80) | |
{ | |
USBx_HC(ch_num)->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM; | |
} | |
break; | |
case EP_TYPE_ISOC: | |
USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM |\ | |
USB_OTG_HCINTMSK_ACKM |\ | |
USB_OTG_HCINTMSK_AHBERR |\ | |
USB_OTG_HCINTMSK_FRMORM ; | |
if (epnum & 0x80) | |
{ | |
USBx_HC(ch_num)->HCINTMSK |= (USB_OTG_HCINTMSK_TXERRM | USB_OTG_HCINTMSK_BBERRM); | |
} | |
break; | |
} | |
/* Enable the top level host channel interrupt. */ | |
USBx_HOST->HAINTMSK |= (1 << ch_num); | |
/* Make sure host channel interrupts are enabled. */ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_HCIM; | |
/* Program the HCCHAR register */ | |
USBx_HC(ch_num)->HCCHAR = (((dev_address << 22) & USB_OTG_HCCHAR_DAD) |\ | |
(((epnum & 0x7F)<< 11) & USB_OTG_HCCHAR_EPNUM)|\ | |
((((epnum & 0x80) == 0x80)<< 15) & USB_OTG_HCCHAR_EPDIR)|\ | |
(((speed == HPRT0_PRTSPD_LOW_SPEED)<< 17) & USB_OTG_HCCHAR_LSDEV)|\ | |
((ep_type << 18) & USB_OTG_HCCHAR_EPTYP)|\ | |
(mps & USB_OTG_HCCHAR_MPSIZ)); | |
if (ep_type == EP_TYPE_INTR) | |
{ | |
USBx_HC(ch_num)->HCCHAR |= USB_OTG_HCCHAR_ODDFRM ; | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Start a transfer over a host channel | |
* @param USBx : Selected device | |
* @param hc : pointer to host channel structure | |
* @param dma: USB dma enabled or disabled | |
* This parameter can be one of these values: | |
* 0 : DMA feature not used | |
* 1 : DMA feature used | |
* @retval HAL state | |
*/ | |
HAL_StatusTypeDef USB_HC_StartXfer(USB_OTG_GlobalTypeDef *USBx, USB_OTG_HCTypeDef *hc, uint8_t dma) | |
{ | |
static __IO uint32_t tmpreg = 0; | |
uint8_t is_oddframe = 0; | |
uint16_t len_words = 0; | |
uint16_t num_packets = 0; | |
uint16_t max_hc_pkt_count = 256; | |
if((USBx != USB_OTG_FS) && (hc->speed == USB_OTG_SPEED_HIGH)) | |
{ | |
if((dma == 0) && (hc->do_ping == 1)) | |
{ | |
USB_DoPing(USBx, hc->ch_num); | |
return HAL_OK; | |
} | |
else if(dma == 1) | |
{ | |
USBx_HC(hc->ch_num)->HCINTMSK &= ~(USB_OTG_HCINTMSK_NYET | USB_OTG_HCINTMSK_ACKM); | |
hc->do_ping = 0; | |
} | |
} | |
/* Compute the expected number of packets associated to the transfer */ | |
if (hc->xfer_len > 0) | |
{ | |
num_packets = (hc->xfer_len + hc->max_packet - 1) / hc->max_packet; | |
if (num_packets > max_hc_pkt_count) | |
{ | |
num_packets = max_hc_pkt_count; | |
hc->xfer_len = num_packets * hc->max_packet; | |
} | |
} | |
else | |
{ | |
num_packets = 1; | |
} | |
if (hc->ep_is_in) | |
{ | |
hc->xfer_len = num_packets * hc->max_packet; | |
} | |
/* Initialize the HCTSIZn register */ | |
USBx_HC(hc->ch_num)->HCTSIZ = (((hc->xfer_len) & USB_OTG_HCTSIZ_XFRSIZ)) |\ | |
((num_packets << 19) & USB_OTG_HCTSIZ_PKTCNT) |\ | |
(((hc->data_pid) << 29) & USB_OTG_HCTSIZ_DPID); | |
if (dma) | |
{ | |
/* xfer_buff MUST be 32-bits aligned */ | |
USBx_HC(hc->ch_num)->HCDMA = (uint32_t)hc->xfer_buff; | |
} | |
is_oddframe = (USBx_HOST->HFNUM & 0x01) ? 0 : 1; | |
USBx_HC(hc->ch_num)->HCCHAR &= ~USB_OTG_HCCHAR_ODDFRM; | |
USBx_HC(hc->ch_num)->HCCHAR |= (is_oddframe << 29); | |
/* Set host channel enable */ | |
tmpreg = USBx_HC(hc->ch_num)->HCCHAR; | |
tmpreg &= ~USB_OTG_HCCHAR_CHDIS; | |
tmpreg |= USB_OTG_HCCHAR_CHENA; | |
USBx_HC(hc->ch_num)->HCCHAR = tmpreg; | |
if (dma == 0) /* Slave mode */ | |
{ | |
if((hc->ep_is_in == 0) && (hc->xfer_len > 0)) | |
{ | |
switch(hc->ep_type) | |
{ | |
/* Non periodic transfer */ | |
case EP_TYPE_CTRL: | |
case EP_TYPE_BULK: | |
len_words = (hc->xfer_len + 3) / 4; | |
/* check if there is enough space in FIFO space */ | |
if(len_words > (USBx->HNPTXSTS & 0xFFFF)) | |
{ | |
/* need to process data in nptxfempty interrupt */ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_NPTXFEM; | |
} | |
break; | |
/* Periodic transfer */ | |
case EP_TYPE_INTR: | |
case EP_TYPE_ISOC: | |
len_words = (hc->xfer_len + 3) / 4; | |
/* check if there is enough space in FIFO space */ | |
if(len_words > (USBx_HOST->HPTXSTS & 0xFFFF)) /* split the transfer */ | |
{ | |
/* need to process data in ptxfempty interrupt */ | |
USBx->GINTMSK |= USB_OTG_GINTMSK_PTXFEM; | |
} | |
break; | |
default: | |
break; | |
} | |
/* Write packet into the Tx FIFO. */ | |
USB_WritePacket(USBx, hc->xfer_buff, hc->ch_num, hc->xfer_len, 0); | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Read all host channel interrupts status | |
* @param USBx : Selected device | |
* @retval HAL state | |
*/ | |
uint32_t USB_HC_ReadInterrupt (USB_OTG_GlobalTypeDef *USBx) | |
{ | |
return ((USBx_HOST->HAINT) & 0xFFFF); | |
} | |
/** | |
* @brief Halt a host channel | |
* @param USBx : Selected device | |
* @param hc_num : Host Channel number | |
* This parameter can be a value from 1 to 15 | |
* @retval HAL state | |
*/ | |
HAL_StatusTypeDef USB_HC_Halt(USB_OTG_GlobalTypeDef *USBx , uint8_t hc_num) | |
{ | |
uint32_t count = 0; | |
/* Check for space in the request queue to issue the halt. */ | |
if (((((USBx_HC(hc_num)->HCCHAR) & USB_OTG_HCCHAR_EPTYP) >> 18) == HCCHAR_CTRL) || | |
(((((USBx_HC(hc_num)->HCCHAR) & USB_OTG_HCCHAR_EPTYP) >> 18) == HCCHAR_BULK))) | |
{ | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS; | |
if ((USBx->HNPTXSTS & 0xFFFF) == 0) | |
{ | |
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA; | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA; | |
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR; | |
do | |
{ | |
if (++count > 1000) | |
{ | |
break; | |
} | |
} | |
while ((USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA); | |
} | |
else | |
{ | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA; | |
} | |
} | |
else | |
{ | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS; | |
if ((USBx_HOST->HPTXSTS & 0xFFFF) == 0) | |
{ | |
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA; | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA; | |
USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR; | |
do | |
{ | |
if (++count > 1000) | |
{ | |
break; | |
} | |
} | |
while ((USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA); | |
} | |
else | |
{ | |
USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA; | |
} | |
} | |
return HAL_OK; | |
} | |
/** | |
* @brief Initiate Do Ping protocol | |
* @param USBx : Selected device | |
* @param hc_num : Host Channel number | |
* This parameter can be a value from 1 to 15 | |
* @retval HAL state | |
*/ | |
HAL_StatusTypeDef USB_DoPing(USB_OTG_GlobalTypeDef *USBx , uint8_t ch_num) | |
{ | |
uint8_t num_packets = 1; | |
uint32_t tmpreg = 0; | |
USBx_HC(ch_num)->HCTSIZ = ((num_packets << 19) & USB_OTG_HCTSIZ_PKTCNT) |\ | |
USB_OTG_HCTSIZ_DOPING; | |
/* Set host channel enable */ | |
tmpreg = USBx_HC(ch_num)->HCCHAR; | |
tmpreg &= ~USB_OTG_HCCHAR_CHDIS; | |
tmpreg |= USB_OTG_HCCHAR_CHENA; | |
USBx_HC(ch_num)->HCCHAR = tmpreg; | |
return HAL_OK; | |
} | |
/** | |
* @brief Stop Host Core | |
* @param USBx : Selected device | |
* @retval HAL state | |
*/ | |
HAL_StatusTypeDef USB_StopHost(USB_OTG_GlobalTypeDef *USBx) | |
{ | |
uint8_t i; | |
uint32_t count = 0; | |
uint32_t value; | |
USB_DisableGlobalInt(USBx); | |
/* Flush FIFO */ | |
USB_FlushTxFifo(USBx, 0x10); | |
USB_FlushRxFifo(USBx); | |
/* Flush out any leftover queued requests. */ | |
for (i = 0; i <= 15; i++) | |
{ | |
value = USBx_HC(i)->HCCHAR ; | |
value |= USB_OTG_HCCHAR_CHDIS; | |
value &= ~USB_OTG_HCCHAR_CHENA; | |
value &= ~USB_OTG_HCCHAR_EPDIR; | |
USBx_HC(i)->HCCHAR = value; | |
} | |
/* Halt all channels to put them into a known state. */ | |
for (i = 0; i <= 15; i++) | |
{ | |
value = USBx_HC(i)->HCCHAR ; | |
value |= USB_OTG_HCCHAR_CHDIS; | |
value |= USB_OTG_HCCHAR_CHENA; | |
value &= ~USB_OTG_HCCHAR_EPDIR; | |
USBx_HC(i)->HCCHAR = value; | |
do | |
{ | |
if (++count > 1000) | |
{ | |
break; | |
} | |
} | |
while ((USBx_HC(i)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA); | |
} | |
/* Clear any pending Host interrupts */ | |
USBx_HOST->HAINT = 0xFFFFFFFF; | |
USBx->GINTSTS = 0xFFFFFFFF; | |
USB_EnableGlobalInt(USBx); | |
return HAL_OK; | |
} | |
/** | |
* @} | |
*/ | |
#endif /* defined (HAL_PCD_MODULE_ENABLED) || defined (HAL_HCD_MODULE_ENABLED) */ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |