isr.c

这是一个89c52的USB固件系统的源码 使用keilc 生成hex文件 可直接烧录

/*
   //*************************************************************************
   //
   //                  		ZLGMCU
   //				www.zlgmcu.com
   // File Name:	isr.C
   // Revision:		0.4(2002-07-08)
   // Author:		Liu Ying Bin
   // Use library:  USB51S.LIB
   // Note:			USB51S.LIB不带DMA控制功能
   //*************************************************************************
   */


#include <stdio.h>
#include <string.h>
#include <reg51.h>                /* special function register declarations   */
#include "isr.h"
#include "mainloop.h"
#include "protozlg.h"

#define uchar unsigned char
#define uint unsigned int
sbit POWER=P1^0;
sbit RAMCS=P1^4;
sbit A15=P2^7;
sbit PCS=P3^4;
sbit JCS=P3^5;
sbit A0=P3^0;
sbit A1=P3^1;
sbit P31=P3^1;
sbit P32=P3^2;
sbit P33=P3^3;
sbit P34=P3^4;
sbit P35=P3^5;
sbit WRITE=P3^6;
sbit READ=P3^7;

#define MAX_ORDER 5

/*
//*************************************************************************
//  Public static data
//*************************************************************************
*/

EPPFLAGS bEPPflags;
CONTROL_XFER ControlData;
unsigned int data d12_addr;
extern byte_count byte_cnt;
unsigned int data D12_DATA;
unsigned int data D12_COMMAND;


/* ISR static vars */
unsigned char idata GenEpBuf[EP1_PACKET_SIZE];
unsigned char idata EpBuf[EP2_PACKET_SIZE];
IO_REQUEST idata ioRequest;

rem_cs();
rev_cs();

//厂商请求入口地址
code void (*VendorDeviceRequest[])(void) =
{
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	reserved,
	read_write_register,
	reserved,
	reserved,
	reserved
};

//USB总线重新连接(先断开，再连接)子程序
void reconnect_USB(void)
{
	unsigned long clk_cnt;

//	D12SUSPD = 0;
	disconnect_USB();
	for (clk_cnt=0;clk_cnt<=0x9000;clk_cnt++) {}
	connect_USB();
}

//断开USB总线连接
void disconnect_USB(void)
{
	D12_SetMode(D12_NOLAZYCLOCK, D12_SETTOONE | D12_CLOCK_12M);
}

//连接到USB总线
void connect_USB(void)
{
	DISABLE;
	bEPPflags.value = 0;
	ENABLE;
	D12_SetDMA(0x0);//设置D12工作模式
	D12_SetMode(D12_NOLAZYCLOCK|D12_SOFTCONNECT, D12_SETTOONE | D12_CLOCK_12M);
}

//总线复位服务子程序
void D12_busreset(void)
{
//可添加用户代码(进行检测到总线复位的操作)
}

//DMA操作结束中断服务子程序
void dma_eot(void)
{
//可添加用户代码(进行检测DMA操作结束的操作)
}

//D12挂起服务子程序
void d12_suspend(void)
{
//可添加用户代码
}

//端点1输出中断操作
void ep1_txdone(void)
{
  unsigned char c0,c1;

  if (RAMCS == 0)
    c0 = 0;
  else
    c0 = 1;
  if (MCU_D12CS == 0)
    c1 = 0;
  else
    c1 = 1;
  RAMCS = 1;
  MCU_D12CS = 0;
  D12_ReadLastTransactionStatus(3);//复位中断寄存器
  if (c0 == 1)
    RAMCS = 1;
  if (c1 == 1)
    MCU_D12CS = 1;
  if (c0 == 0)
    RAMCS = 0;
  if (c1 == 0)
    MCU_D12CS = 0;
}

//端点1输入中断操作
void ep1_rxdone(void)
{
  unsigned char len;
  unsigned char c0,c1;

  if (RAMCS == 0)
    c0 = 0;
  else
    c0 = 1;
  if (MCU_D12CS == 0)
    c1 = 0;
  else
    c1 = 1;
  RAMCS = 1;
  MCU_D12CS = 0;
  D12_ReadLastTransactionStatus(2);//复位中断寄存器
  len = D12_ReadEndpoint(2, sizeof(GenEpBuf), GenEpBuf);//读取端点1接收数据
  if (len != 0)
	bEPPflags.bits.ep1_rxdone = 1;//标志端点1接收到数据
  if (c0 == 1)
    RAMCS = 1;
  if (c1 == 1)
    MCU_D12CS = 1;
  if (c0 == 0)
    RAMCS = 0;
  if (c1 == 0)
    MCU_D12CS = 0;

}

//端点2输出中断操作
void ep2_txdone(void)
{
  unsigned char c0,c1;

  if (RAMCS == 0)
    c0 = 0;
  else
    c0 = 1;
  if (MCU_D12CS == 0)
    c1 = 0;
  else
    c1 = 1;
  RAMCS = 1;
  MCU_D12CS = 0;
  D12_ReadLastTransactionStatus(5);//复位中断寄存器
	//可添加用户代码(进行检测端点号5IN令牌的操作)
  if(byte_cnt.word>0)
  {
		if(byte_cnt.word<32)
		{
			D12_WriteEndpoint(5, byte_cnt.byte.low, EpBuf);
			byte_cnt.word=0;
		}
		else
		{
			byte_cnt.word=byte_cnt.word-32;
			D12_WriteEndpoint(5, 32, EpBuf);
		}
  }
  if (c0 == 1)
    RAMCS = 1;
  if (c1 == 1)
    MCU_D12CS = 1;
  if (c0 == 0)
    RAMCS = 0;
  if (c1 == 0)
    MCU_D12CS = 0;

}

//端点2输入中断操作
void ep2_rxdone(void)
{
  unsigned char len;
  unsigned char c0,c1;

  if (RAMCS == 0)
    c0 = 0;
  else
    c0 = 1;
  if (MCU_D12CS == 0)
    c1 = 0;
  else
    c1 = 1;
  RAMCS = 1;
  MCU_D12CS = 0;
  D12_ReadLastTransactionStatus(4);//复位中断寄存器
  len = D12_ReadEndpoint(4, 32, EpBuf);//读取端点2接收数据
  if (bEPPflags.bits.ep2buf_full)
 	len = D12_ReadEndpoint(4, 32, EpBuf);//读取端点2接收数据
  if (len != 0)
	bEPPflags.bits.ep2_rxdone = 1;//标志端点2接收到数据
  if (c0 == 1)
    RAMCS = 1;
  if (c1 == 1)
    MCU_D12CS = 1;
  if (c0 == 0)
    RAMCS = 0;
  if (c1 == 0)
    MCU_D12CS = 0;
}