protodma.lst

USB 驱动源代码

C51 COMPILER V6.14  PROTODMA                                                               10/12/2002 08:40:05 PAGE 1   


C51 COMPILER V6.14, COMPILATION OF MODULE PROTODMA
OBJECT MODULE PLACED IN .\Protodma.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE .\Protodma.c OPTIMIZE(2,SPEED) DEBUG OBJECTEXTEND

stmt level    source

   1          #include <stdio.h>
   2          #include <string.h>
   3          
   4          #include <reg51.h>                /* special function register declarations   */
   5          #include "epphal.h"
   6          
   7          #include "d12ci.h"
   8          #include "mainloop.h"
   9          #include "usb100.h"
  10          #include "chap_9.h"
  11          
  12          extern CONTROL_XFER ControlData;
  13          extern IO_REQUEST idata ioRequest;
  14          extern EPPFLAGS bEPPflags;
  15          extern BOOL bNoRAM;
  16          extern unsigned char idata EpBuf[EP2_PACKET_SIZE];
  17          
  18          //获取固件版本号
  19          void get_firmware_version()
  20          {
  21   1      	unsigned char i;
  22   1      
  23   1      	i = 0x30; // firmware version number
  24   1      	single_transmit((unsigned char *)&i, 1);
  25   1      }
  26          
  27          //获取端点2缓存区大小
  28          void get_buffer_size()
  29          {
  30   1      	unsigned char i[4];
  31   1      
  32   1      	if(bNoRAM == TRUE) {
  33   2      		i[0] = EP2_PACKET_SIZE;
  34   2      		i[1] = 0;
  35   2      		i[2] = 0;
  36   2      		i[3] = 0;
  37   2      	} else {
  38   2      		i[0] = 0;
  39   2      		i[1] = 1;
  40   2      		i[2] = 0;
  41   2      		i[3] = 0;
  42   2      	}
  43   1      	single_transmit((unsigned char *)&i, 4);
  44   1      }
  45          
  46          //DMA请求响应子程序
  47          void setup_dma_request()
  48          {
  49   1      	memcpy((unsigned char *)&ioRequest + ControlData.DeviceRequest.wValue,
  50   1      		ControlData.dataBuffer,
  51   1      		ControlData.DeviceRequest.wLength);
  52   1      
  53   1      	ioRequest.uSize = SWAP(ioRequest.uSize);
  54   1      	ioRequest.uAddressL = SWAP(ioRequest.uAddressL);
  55   1      
C51 COMPILER V6.14  PROTODMA                                                               10/12/2002 08:40:05 PAGE 2   

  56   1      	if(ioRequest.uSize > DMA_BUFFER_SIZE) { // Unaccepted request
  57   2      		stall_ep0();//DMA设置出错
  58   2      	}
  59   1      	else if(bNoRAM == TRUE && ioRequest.uSize > EP2_PACKET_SIZE) {
  60   2      		stall_ep0();//DMA缓冲区出错
  61   2      	}
  62   1      	else {
  63   2      		if(bEPPflags.bits.dma_state == DMA_IDLE) {
  64   3      			DISABLE;
  65   3      			bEPPflags.bits.setup_dma ++;
  66   3      			ENABLE;
  67   3      		}
  68   2      		else {
  69   3      			DISABLE;
  70   3      			bEPPflags.bits.dma_state = DMA_PENDING;
  71   3      			ENABLE;
  72   3      		}
  73   2      
  74   2      	} // else if accepted request
  75   1      }
  76          
  77          //厂商请求处理
  78          void read_write_register(void)
  79          {
  80   1      	unsigned char i,len,epstatus;
  81   1      
  82   1      	if(ControlData.DeviceRequest.bmRequestType & (unsigned char)USB_ENDPOINT_DIRECTION_MASK) {
  83   2      
  84   2      		if(bEPPflags.bits.verbose)
  85   2      			printf("Read Registers: Offset = 0x%x, Length = 0x%x, Index = 0x%x.\n",
  86   2      				ControlData.DeviceRequest.wValue,
  87   2      				ControlData.DeviceRequest.wLength,
  88   2      				ControlData.DeviceRequest.wIndex);
  89   2      
  90   2      		if(ControlData.DeviceRequest.wIndex == GET_FIRMWARE_VERSION &&
  91   2      			ControlData.DeviceRequest.wValue == 0 &&
  92   2      			ControlData.DeviceRequest.wLength == 1)
  93   2      			get_firmware_version();//获取固件版本号
  94   2      		else
  95   2      		if(ControlData.DeviceRequest.wIndex == GET_BUFFER_SIZE &&
  96   2      			ControlData.DeviceRequest.wValue == 0 &&
  97   2      			ControlData.DeviceRequest.wLength == 4)
  98   2      			get_buffer_size();//获取缓冲区大小
  99   2      		else
 100   2      			stall_ep0();
 101   2      
 102   2      	}	// if read register
 103   1      	else{
 104   2      		if(bEPPflags.bits.verbose) {
 105   3      
 106   3      			printf("Write Registers: Offset = 0x%x, Length = 0x%x, Index = 0x%x.\n",
 107   3      				ControlData.DeviceRequest.wValue,
 108   3      				ControlData.DeviceRequest.wLength,
 109   3      				ControlData.DeviceRequest.wIndex);
 110   3      
 111   3      			printf("Data: ");
 112   3      			for(i = 0; i < ControlData.DeviceRequest.wLength; i ++)
 113   3      				printf("0x%bx, ", *((ControlData.dataBuffer)+i));
 114   3      			printf("\n");
 115   3      		}
 116   2      
 117   2      		if(ControlData.DeviceRequest.wIndex == SETUP_DMA_REQUEST &&
C51 COMPILER V6.14  PROTODMA                                                               10/12/2002 08:40:05 PAGE 3   

 118   2      			ControlData.DeviceRequest.wValue == 0 &&
 119   2      			ControlData.DeviceRequest.wLength == 6)
 120   2      		   	{
 121   3      				if(ControlData.dataBuffer[5]==0x81)
 122   3      				{
 123   4      					D12_WriteEndpoint(5, ControlData.dataBuffer[3], EpBuf);//发送数据
 124   4      				}
 125   3      				if(ControlData.dataBuffer[5]==0x80)
 126   3      				{
 127   4      					epstatus=D12_ReadEndpointStatus(4);
 128   4      					epstatus &= 0x60;
 129   4      					if (epstatus == 0x60)
 130   4      						len = D12_ReadEndpoint(4, 64, EpBuf);//读取双缓冲区数据
 131   4       				}
 132   3      				single_transmit(0, 0);
 133   3      				//setup_dma_request();//DMA设置处理,因为未使用DMA所以屏蔽掉
 134   3      			}				
 135   2      		else
 136   2      			stall_ep0();
 137   2      	}	// if write register
 138   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    590    ----
   CONSTANT SIZE    =    140    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       8
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)