ARM专辑-152M-pdf.zip
源代码在线查看： isr.c
//*************************************************************************
//
// P H I L I P S P R O P R I E T A R Y
//
// COPYRIGHT (c) 1999 BY PHILIPS SINGAPORE.
// -- ALL RIGHTS RESERVED --
//
// File Name: ISR.C
// Author: Hilbert Zhang ZhenYu
// Chew Thing Piao
// Created: Oct. 1 99
// Modified:
// Revision: 0.0.
//
//*************************************************************************
//
//*************************************************************************
#include "config.h" /* special function register declarations */
#undef GLOBAL_EXT
#include "SysCnfg.h"
#include "BasicTyp.h"
#include "Common.h"
#include "Hal4Sys.h"
#include "Hal4d12.h"
//*************************************************************************
// Public data
//*************************************************************************
// bit Flags
STRUC_EXT BITFLAGS bFlags;
// Timer 0
#define MCUBF_Timer bFlags.bits.timer
INT8_EXT Hal4Sys_ClockTicks;
// D12 bit flags
#define D12BF_SetupOverwritten bFlags.bits.setup_overwritten
#define D12BF_Configuration bFlags.bits.;configuration
// DefaultControlPipe Finate State Machine [One-Hot]
STRUC_EXT char_bit _DCPFSMstate;
#define DCPFSMstate _DCPFSMstate.char_
#define DCPFSM_SetupProc _DCPFSMstate.bit_.b0
#define DCPFSM_DataIn _DCPFSMstate.bit_.b1
#define DCPFSM_DataOut _DCPFSMstate.bit_.b2
#define DCPFSM_COhandshake _DCPFSMstate.bit_.b3
#define DCPFSM_CIhandshake _DCPFSMstate.bit_.b4
#define DCPFSM_Stall _DCPFSMstate.bit_.b7
STRUC_EXT char_bit _BOTFSMstate;
#define BOTFSMstate _BOTFSMstate.char_
#define BOTFSM_IDLE _BOTFSMstate.bit_.b0
#define BOTFSM_CBWProc _BOTFSMstate.bit_.b1
#define BOTFSM_DataIn _BOTFSMstate.bit_.b2
#define BOTFSM_DataOut _BOTFSMstate.bit_.b3
#define BOTFSM_CSWProc _BOTFSMstate.bit_.b4
#define BOTFSM_CSW _BOTFSMstate.bit_.b5
#define BOTFSM_Stall _BOTFSMstate.bit_.b7
// USB Device Request
STRUC_EXT DEVICE_REQUEST DCPDeviceRequest;
INT8_EXT UsbReq_Recipient;
INT8_EXT UsbReq_Type;
INT8_EXT UsbReq_Request;
#define REQBF_DCPRequest_dir bFlags.bits.DCPRequst_Dir
#define REQBF_DCPRequest_EPdir bFlags.bits.DCPRequst_EPDir
#define REQBF_StallDCPRequest bFlags.bits.Stall_DCPRequest
// Default Control Pipe Tansfer DCPXfer
STRUC_EXT char_bit _Xfer_Space;
#define Xfer_Space _Xfer_Space.char_
#define DCPXfer_atMCUCODE _Xfer_Space.bit_.b0
#define DCPXfer_atMCURAM _Xfer_Space.bit_.b1
#define DCPXfer_atEEROM _Xfer_Space.bit_.b2
#define DCPXfer_atATA _Xfer_Space.bit_.b3
#define BOTXfer_atRAM _Xfer_Space.bit_.b4
#define BOTXfer_atATA _Xfer_Space.bit_.b5
#define BOTXfer_atROM _Xfer_Space.bit_.b6
INT16_EXT DCPXfer_wResidue;
INT8_EXT * DCPXfer_pData;
//*************************************************************************
// Private data
//*************************************************************************
char_bit _ISR_eplts ;
#define ISR_eplts _ISR_eplts.char_
#define D12EP0LTS_SUCCESS _ISR_eplts.bit_.b0 //数据接收/发送成功
#define D12EP0LTS_SETUP _ISR_eplts.bit_.b5 //setup信息包，1表示成功接收的信息包有一个SETIP标志
uint_bit _ISR_IR; // bit addressable data(16bits) from $20H->
#define ISR_IR _ISR_IR.uint_
#define D12IS_EOT _ISR_IR.bit_.b0 // D12 Interrupt Src
#define D12IS_SUSPENDCHANGE _ISR_IR.bit_.b15 // D12 Interrupt Src
#define D12IS_BUSRESET _ISR_IR.bit_.b14 // D12 Interrupt Src
#define D12IS_ENDP2IN _ISR_IR.bit_.b13 // D12 Interrupt Src
#define D12IS_ENDP2OUT _ISR_IR.bit_.b12 // D12 Interrupt Src
#define D12IS_ENDP1IN _ISR_IR.bit_.b11 // D12 Interrupt Src
#define D12IS_ENDP1OUT _ISR_IR.bit_.b10 // D12 Interrupt Src
#define D12IS_ENDP0IN _ISR_IR.bit_.b9 // D12 Interrupt Src
#define D12IS_ENDP0OUT _ISR_IR.bit_.b8 // D12 Interrupt Src
//*************************************************************************
// Private Functions
//*************************************************************************
void ep0_txdone(void);
void ep0_rxdone(void);
void ep1_txdone(void);
void ep1_rxdone(void);
//*************************************************************************
// Functions
//*************************************************************************
/*
timer_isr() interrupt 1
{
RaiseIRQL();
TIMER0_LOW = 0x00; // 1 MS interval @24MHz
TIMER0_HIGH =TIMER0_AT24MHZ; // 0xF8
Hal4Sys_ClockTicks++;
MCUBF_Timer = 1;
LowerIRQL();
}
*/
void usb_isr(void)
{
uint16 temp;
//RaiseIRQL();
Hal4D12_ReadInterruptRegister(&ISR_IR);
Hal4D12_ReadLastTransactionStatus(4);
temp = ISR_IR;
if(ISR_IR != 0)
{
if(D12IS_BUSRESET)
{
DCPFSMstate = USBFSM4DCP_IDLE; //USBFSM4DCP_IDLE =0x00
BOTFSMstate = USBFSM4BOT_IDLE; //USBFSM4BOT_IDLE =0x01
D12BF_SetupOverwritten = 0;
// IOSET = SUSP;
}
if(D12IS_SUSPENDCHANGE) //挂起,进入掉电模式
{
/* if( D12BF_SetupOverwritten==1 )
D12SUSPD=1;
else
D12SUSPD=0;
if(D12SUSPD == 1)
{
P0 = 0xFF;
P1 = 0xFF;
P2 = 0xFF;
P3 = 0xFF;
PCON |= 0x02; //Powerdown bit set
while (1);
}
*/
}
if(D12IS_ENDP0OUT)
ep0_rxdone();
if(D12IS_ENDP0IN)
ep0_txdone();
if(D12IS_ENDP1IN)
ep1_txdone();
if(D12IS_ENDP1OUT)
ep1_rxdone();
}
// LowerIRQL();
}
void ep0_rxdone(void) //接收处理
{
ISR_eplts = Hal4D12_ReadLastTransactionStatus(0); // Clear interrupt flag
if (!D12EP0LTS_SUCCESS)//数据接收不成功，返回(sbit D12EP0LTS_SUCCESS = ISR_eplts^0)
return;
if (D12EP0LTS_SETUP) //接收到SETUP信号
{
if(DCPFSM_SetupProc || DCPFSM_DataOut || DCPFSM_DataIn )
{
D12BF_SetupOverwritten = 1;
}
DCPFSMstate = USBFSM4DCP_SETUPPROC;//USBFSM4DCP_SETUPPROC =0x01
}
else /* not a setup packet, just a Data Out Packet */
{
if (DCPFSM_CIhandshake)
{
DCPFSMstate = USBFSM4DCP_IDLE;//USBFSM4BOT_IDLE =0x01
}
// else just let it stay in FIFO of Control-Out
}
}
void ep0_txdone(void) //发送处理
{
ISR_eplts = Hal4D12_ReadLastTransactionStatus(1); // Clear interrupt flag
if ( !D12EP0LTS_SUCCESS ) //数据接收不成功，返回
return;
if (DCPFSM_DataIn) //DCPFSM_DataIn = DCPFSMstate^1
{
if( DCPXfer_wResidue >= EP0_PACKET_SIZE)
{
if(DCPXfer_atMCUCODE)
Hal4D12_WriteEPAtCode(1, EP0_PACKET_SIZE, DCPXfer_pData);
else if(DCPXfer_atMCURAM)
Hal4D12_WriteEndpoint(1, EP0_PACKET_SIZE, DCPXfer_pData);
else
return;
DCPXfer_pData += EP0_PACKET_SIZE;
DCPXfer_wResidue -= EP0_PACKET_SIZE;
/*
// State remains at USBFSM4DCP_DATAIN
*/
}
else if( DCPXfer_wResidue != 0)
{
if(DCPXfer_atMCUCODE)
Hal4D12_WriteEPAtCode(1, (INT8)DCPXfer_wResidue, DCPXfer_pData );
else if(DCPXfer_atMCURAM)
Hal4D12_WriteEndpoint(1, (INT8)DCPXfer_wResidue, DCPXfer_pData );
else
return;
//DCPXfer_pData += DCPXfer_wResidue;
DCPXfer_wResidue = 0;
DCPFSMstate = USBFSM4DCP_HANDSHAKE4CI;
}
else // DCPXfer_wResidue == 0
{
// Send zero packet at the end
Hal4D12_WriteEndpoint(1, 0, 0);
DCPFSMstate = USBFSM4DCP_HANDSHAKE4CI; // USBFSM4DCP_HANDSHAKE4CI =0x10
}
}
else if( DCPFSM_COhandshake )
{
DCPFSMstate = USBFSM4DCP_IDLE; // USBFSM4BOT_IDLE =0x01
}
// else just exit
#undef DCPXfer_wResidue
}
void ep1_txdone(void) //端点1，发送处理
{
Hal4D12_ReadLastTransactionStatus(3); /* Clear interrupt flag */
}
void ep1_rxdone(void) //端点1，接收处理
{
Hal4D12_ReadLastTransactionStatus(2); /* Clear interrupt flag */
}
