From dcc4c457f0cad15b9d60e8fc3afa913bacacdbc6 Mon Sep 17 00:00:00 2001 From: AJM Date: Thu, 20 May 2010 22:47:59 -0400 Subject: moved the usb directory to its proper home in ./libmaple also, removed some old usb file, bootVect.h, which setup the static table for the runtime usb lib that no longer exists and was provided by the bootloader rev 1 --- libmaple/usb/usb_lib/usb_int.c | 192 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 libmaple/usb/usb_lib/usb_int.c (limited to 'libmaple/usb/usb_lib/usb_int.c') diff --git a/libmaple/usb/usb_lib/usb_int.c b/libmaple/usb/usb_lib/usb_int.c new file mode 100644 index 0000000..f1d82be --- /dev/null +++ b/libmaple/usb/usb_lib/usb_int.c @@ -0,0 +1,192 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : usb_int.c +* Author : MCD Application Team +* Version : V2.2.1 +* Date : 09/22/2008 +* Description : Endpoint CTR (Low and High) interrupt's service routines +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "usb_lib.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +u16 SaveRState; +u16 SaveTState; + +/* Extern variables ----------------------------------------------------------*/ +extern void (*pEpInt_IN[7])(void); /* Handles IN interrupts */ +extern void (*pEpInt_OUT[7])(void); /* Handles OUT interrupts */ + +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : CTR_LP. +* Description : Low priority Endpoint Correct Transfer interrupt's service +* routine. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void CTR_LP(void) +{ + u32 wEPVal = 0; + /* stay in loop while pending ints */ + while (((wIstr = _GetISTR()) & ISTR_CTR) != 0) + { + _SetISTR((u16)CLR_CTR); /* clear CTR flag */ + /* extract highest priority endpoint number */ + EPindex = (u8)(wIstr & ISTR_EP_ID); + if (EPindex == 0) + { + /* Decode and service control endpoint interrupt */ + /* calling related service routine */ + /* (Setup0_Process, In0_Process, Out0_Process) */ + + /* save RX & TX status */ + /* and set both to NAK */ + SaveRState = _GetEPRxStatus(ENDP0); + SaveTState = _GetEPTxStatus(ENDP0); + _SetEPRxStatus(ENDP0, EP_RX_NAK); + _SetEPTxStatus(ENDP0, EP_TX_NAK); + + + /* DIR bit = origin of the interrupt */ + + if ((wIstr & ISTR_DIR) == 0) + { + /* DIR = 0 */ + + /* DIR = 0 => IN int */ + /* DIR = 0 implies that (EP_CTR_TX = 1) always */ + + + _ClearEP_CTR_TX(ENDP0); + In0_Process(); + + /* before terminate set Tx & Rx status */ + _SetEPRxStatus(ENDP0, SaveRState); + _SetEPTxStatus(ENDP0, SaveTState); + return; + } + else + { + /* DIR = 1 */ + + /* DIR = 1 & CTR_RX => SETUP or OUT int */ + /* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */ + + wEPVal = _GetENDPOINT(ENDP0); + if ((wEPVal & EP_CTR_TX) != 0) + { + _ClearEP_CTR_TX(ENDP0); + In0_Process(); + /* before terminate set Tx & Rx status */ + _SetEPRxStatus(ENDP0, SaveRState); + _SetEPTxStatus(ENDP0, SaveTState); + return; + } + else if ((wEPVal &EP_SETUP) != 0) + { + _ClearEP_CTR_RX(ENDP0); /* SETUP bit kept frozen while CTR_RX = 1 */ + Setup0_Process(); + /* before terminate set Tx & Rx status */ + _SetEPRxStatus(ENDP0, SaveRState); + _SetEPTxStatus(ENDP0, SaveTState); + return; + } + + else if ((wEPVal & EP_CTR_RX) != 0) + { + _ClearEP_CTR_RX(ENDP0); + Out0_Process(); + /* before terminate set Tx & Rx status */ + _SetEPRxStatus(ENDP0, SaveRState); + _SetEPTxStatus(ENDP0, SaveTState); + return; + } + } + }/* if(EPindex == 0) */ + else + { + /* Decode and service non control endpoints interrupt */ + + /* process related endpoint register */ + wEPVal = _GetENDPOINT(EPindex); + if ((wEPVal & EP_CTR_RX) != 0) + { + /* clear int flag */ + _ClearEP_CTR_RX(EPindex); + + /* call OUT service function */ + (*pEpInt_OUT[EPindex-1])(); + + } /* if((wEPVal & EP_CTR_RX) */ + + if ((wEPVal & EP_CTR_TX) != 0) + { + /* clear int flag */ + _ClearEP_CTR_TX(EPindex); + + /* call IN service function */ + (*pEpInt_IN[EPindex-1])(); + } /* if((wEPVal & EP_CTR_TX) != 0) */ + + }/* if(EPindex == 0) else */ + + }/* while(...) */ +} + +/******************************************************************************* +* Function Name : CTR_HP. +* Description : High Priority Endpoint Correct Transfer interrupt's service +* routine. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void CTR_HP(void) +{ + u32 wEPVal = 0; + + while (((wIstr = _GetISTR()) & ISTR_CTR) != 0) + { + _SetISTR((u16)CLR_CTR); /* clear CTR flag */ + /* extract highest priority endpoint number */ + EPindex = (u8)(wIstr & ISTR_EP_ID); + /* process related endpoint register */ + wEPVal = _GetENDPOINT(EPindex); + if ((wEPVal & EP_CTR_RX) != 0) + { + /* clear int flag */ + _ClearEP_CTR_RX(EPindex); + + /* call OUT service function */ + (*pEpInt_OUT[EPindex-1])(); + + } /* if((wEPVal & EP_CTR_RX) */ + else if ((wEPVal & EP_CTR_TX) != 0) + { + /* clear int flag */ + _ClearEP_CTR_TX(EPindex); + + /* call IN service function */ + (*pEpInt_IN[EPindex-1])(); + + + } /* if((wEPVal & EP_CTR_TX) != 0) */ + + }/* while(...) */ +} + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3