diff options
Diffstat (limited to 'thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Projects/VirtualComport_Loopback/src/usb_istr.c')
| -rw-r--r-- | thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Projects/VirtualComport_Loopback/src/usb_istr.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Projects/VirtualComport_Loopback/src/usb_istr.c b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Projects/VirtualComport_Loopback/src/usb_istr.c new file mode 100644 index 0000000..ec457ed --- /dev/null +++ b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Projects/VirtualComport_Loopback/src/usb_istr.c @@ -0,0 +1,232 @@ +/** + ****************************************************************************** + * @file usb_istr.c + * @author MCD Application Team + * @version V4.0.0 + * @date 21-January-2013 + * @brief ISTR events interrupt service routines + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2> + * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + + +/* Includes ------------------------------------------------------------------*/ +#include "usb_lib.h" +#include "usb_prop.h" +#include "usb_pwr.h" +#include "usb_istr.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +__IO uint16_t wIstr; /* ISTR register last read value */ +__IO uint8_t bIntPackSOF = 0; /* SOFs received between 2 consecutive packets */ +__IO uint32_t esof_counter =0; /* expected SOF counter */ +__IO uint32_t wCNTR=0; + +/* Extern variables ----------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ +/* function pointers to non-control endpoints service routines */ +void (*pEpInt_IN[7])(void) = + { + EP1_IN_Callback, + EP2_IN_Callback, + EP3_IN_Callback, + EP4_IN_Callback, + EP5_IN_Callback, + EP6_IN_Callback, + EP7_IN_Callback, + }; + +void (*pEpInt_OUT[7])(void) = + { + EP1_OUT_Callback, + EP2_OUT_Callback, + EP3_OUT_Callback, + EP4_OUT_Callback, + EP5_OUT_Callback, + EP6_OUT_Callback, + EP7_OUT_Callback, + }; + +/******************************************************************************* +* Function Name : USB_Istr +* Description : ISTR events interrupt service routine +* Input : +* Output : +* Return : +*******************************************************************************/ +void USB_Istr(void) +{ + uint32_t i=0; + __IO uint32_t EP[8]; + + wIstr = _GetISTR(); + +#if (IMR_MSK & ISTR_SOF) + if (wIstr & ISTR_SOF & wInterrupt_Mask) + { + _SetISTR((uint16_t)CLR_SOF); + bIntPackSOF++; + +#ifdef SOF_CALLBACK + SOF_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ + +#if (IMR_MSK & ISTR_CTR) + if (wIstr & ISTR_CTR & wInterrupt_Mask) + { + /* servicing of the endpoint correct transfer interrupt */ + /* clear of the CTR flag into the sub */ + CTR_LP(); +#ifdef CTR_CALLBACK + CTR_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ +#if (IMR_MSK & ISTR_RESET) + if (wIstr & ISTR_RESET & wInterrupt_Mask) + { + _SetISTR((uint16_t)CLR_RESET); + Device_Property.Reset(); +#ifdef RESET_CALLBACK + RESET_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ +#if (IMR_MSK & ISTR_DOVR) + if (wIstr & ISTR_DOVR & wInterrupt_Mask) + { + _SetISTR((uint16_t)CLR_DOVR); +#ifdef DOVR_CALLBACK + DOVR_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ +#if (IMR_MSK & ISTR_ERR) + if (wIstr & ISTR_ERR & wInterrupt_Mask) + { + _SetISTR((uint16_t)CLR_ERR); +#ifdef ERR_CALLBACK + ERR_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ +#if (IMR_MSK & ISTR_WKUP) + if (wIstr & ISTR_WKUP & wInterrupt_Mask) + { + _SetISTR((uint16_t)CLR_WKUP); + Resume(RESUME_EXTERNAL); +#ifdef WKUP_CALLBACK + WKUP_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ +#if (IMR_MSK & ISTR_SUSP) + if (wIstr & ISTR_SUSP & wInterrupt_Mask) + { + + /* check if SUSPEND is possible */ + if (fSuspendEnabled) + { + Suspend(); + } + else + { + /* if not possible then resume after xx ms */ + Resume(RESUME_LATER); + } + /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */ + _SetISTR((uint16_t)CLR_SUSP); +#ifdef SUSP_CALLBACK + SUSP_Callback(); +#endif + } +#endif + /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ + +#if (IMR_MSK & ISTR_ESOF) + if (wIstr & ISTR_ESOF & wInterrupt_Mask) + { + /* clear ESOF flag in ISTR */ + _SetISTR((uint16_t)CLR_ESOF); + + if ((_GetFNR()&FNR_RXDP)!=0) + { + /* increment ESOF counter */ + esof_counter ++; + + /* test if we enter in ESOF more than 3 times with FSUSP =0 and RXDP =1=>> possible missing SUSP flag*/ + if ((esof_counter >3)&&((_GetCNTR()&CNTR_FSUSP)==0)) + { + /* this a sequence to apply a force RESET*/ + + /*Store CNTR value */ + wCNTR = _GetCNTR(); + + /*Store endpoints registers status */ + for (i=0;i<8;i++) EP[i] = _GetENDPOINT(i); + + /*apply FRES */ + wCNTR|=CNTR_FRES; + _SetCNTR(wCNTR); + + /*clear FRES*/ + wCNTR&=~CNTR_FRES; + _SetCNTR(wCNTR); + + /*poll for RESET flag in ISTR*/ + while((_GetISTR()&ISTR_RESET) == 0); + /* clear RESET flag in ISTR */ + _SetISTR((uint16_t)CLR_RESET); + + /*restore Enpoints*/ + for (i=0;i<8;i++) + _SetENDPOINT(i, EP[i]); + + esof_counter = 0; + } + } + else + { + esof_counter = 0; + } + + /* resume handling timing is made with ESOFs */ + Resume(RESUME_ESOF); /* request without change of the machine state */ + +#ifdef ESOF_CALLBACK + ESOF_Callback(); +#endif + } +#endif +} /* USB_Istr */ + + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |