202 lines
3.7 KiB
C
202 lines
3.7 KiB
C
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/********************************** (C) COPYRIGHT *******************************
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* File Name : usb_istr.c
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* Author : WCH
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* Version : V1.0.1
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* Date : 2022/12/28
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* Description : ISTR events interrupt service routines
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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#include "usb_istr.h"
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#include "../driver/inc/usb_lib.h"
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#include "usb_prop.h"
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#include "usb_pwr.h"
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uint16_t Ep0RxBlks;
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/* Private variables */
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__IO uint16_t wIstr;
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__IO uint8_t bIntPackSOF = 0;
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__IO uint32_t esof_counter =0;
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__IO uint32_t wCNTR=0;
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/* function pointers to non-control endpoints service routines */
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void (*pEpInt_IN[7])(void) ={
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EP1_IN_Callback,
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EP2_IN_Callback,
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EP3_IN_Callback,
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EP4_IN_Callback,
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EP5_IN_Callback,
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EP6_IN_Callback,
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EP7_IN_Callback,
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};
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void (*pEpInt_OUT[7])(void) ={
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EP1_OUT_Callback,
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EP2_OUT_Callback,
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EP3_OUT_Callback,
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EP4_OUT_Callback,
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EP5_OUT_Callback,
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EP6_OUT_Callback,
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EP7_OUT_Callback,
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};
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/*******************************************************************************
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* @fn USB_Istr
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*
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* @brief ISTR events interrupt service routine
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*
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* @return None.
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*/
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void USB_Istr(void)
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{
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uint32_t i=0;
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__IO uint32_t EP[8];
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if ((*_pEPRxCount(0) & 0xFC00 )!= Ep0RxBlks)
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{
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*_pEPRxCount(0) |= (Ep0RxBlks & 0xFC00);
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}
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wIstr = _GetISTR();
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#if (IMR_MSK & ISTR_SOF)
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if (wIstr & ISTR_SOF & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_SOF);
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bIntPackSOF++;
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#ifdef SOF_CALLBACK
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SOF_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_CTR)
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if (wIstr & ISTR_CTR & wInterrupt_Mask)
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{
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CTR_LP();
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#ifdef CTR_CALLBACK
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CTR_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_RESET)
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if (wIstr & ISTR_RESET & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_RESET);
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Device_Property.Reset();
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#ifdef RESET_CALLBACK
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RESET_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_DOVR)
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if (wIstr & ISTR_DOVR & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_DOVR);
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#ifdef DOVR_CALLBACK
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DOVR_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_ERR)
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if (wIstr & ISTR_ERR & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_ERR);
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#ifdef ERR_CALLBACK
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ERR_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_WKUP)
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if (wIstr & ISTR_WKUP & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_WKUP);
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Resume(RESUME_EXTERNAL);
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#ifdef WKUP_CALLBACK
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WKUP_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_SUSP)
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if (wIstr & ISTR_SUSP & wInterrupt_Mask)
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{
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if (fSuspendEnabled)
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{
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Suspend();
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}
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else
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{
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Resume(RESUME_LATER);
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}
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_SetISTR((uint16_t)CLR_SUSP);
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#ifdef SUSP_CALLBACK
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SUSP_Callback();
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#endif
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}
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#endif
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#if (IMR_MSK & ISTR_ESOF)
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if (wIstr & ISTR_ESOF & wInterrupt_Mask)
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{
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_SetISTR((uint16_t)CLR_ESOF);
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if ((_GetFNR()&FNR_RXDP)!=0)
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{
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esof_counter ++;
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if ((esof_counter >3)&&((_GetCNTR()&CNTR_FSUSP)==0))
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{
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wCNTR = _GetCNTR();
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for (i=0;i<8;i++) EP[i] = _GetENDPOINT(i);
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wCNTR|=CNTR_FRES;
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_SetCNTR(wCNTR);
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wCNTR&=~CNTR_FRES;
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_SetCNTR(wCNTR);
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while((_GetISTR()&ISTR_RESET) == 0);
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_SetISTR((uint16_t)CLR_RESET);
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for (i=0;i<8;i++)
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_SetENDPOINT(i, EP[i]);
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esof_counter = 0;
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}
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}
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else
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{
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esof_counter = 0;
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}
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Resume(RESUME_ESOF);
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#ifdef ESOF_CALLBACK
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ESOF_Callback();
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#endif
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}
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#endif
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} /* USB_Istr */
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