📄 nic.lis
字号:
.module nic.c
.area text(rom, con, rel)
0000 .dbfile D:\hexok项目\AVRNET项目\AVRNET光盘\AVRuIP\nic.c
0000 .dbfunc e nic_init _nic_init fV
.even
0000 _nic_init::
0000 .dbline -1
0000 .dbline 25
0000 ; /*****************************************************************************
0000 ; * Module Name: NIC Driver Interface for uIP-AVR Port
0000 ; *
0000 ; * Created By: Louis Beaudoin (www.embedded-creations.com)
0000 ; *
0000 ; * Original Release: November 16, 2003
0000 ; *
0000 ; * Module Description:
0000 ; * Provides three functions to interface with a NIC driver
0000 ; * These functions can be called directly from the main uIP control loop
0000 ; * to send packets from uip_buf and uip_appbuf, and store incoming packets to
0000 ; * uip_buf
0000 ; *
0000 ; *
0000 ; *****************************************************************************/
0000 ;
0000 ; #include "nic.h"
0000 ;
0000 ;
0000 ; #define IP_TCP_HEADER_LENGTH 40
0000 ; #define TOTAL_HEADER_LENGTH (IP_TCP_HEADER_LENGTH+ETHERNET_HEADER_LENGTH)
0000 ;
0000 ;
0000 ; void nic_init(void)
0000 ; {
0000 .dbline 26
0000 ; NICInit();
0000 0E940000 xcall _rtl8019Init
0004 .dbline -2
0004 L7:
0004 .dbline 0 ; func end
0004 0895 ret
0006 .dbend
0006 .dbfunc e nic_send _nic_send fV
.even
0006 _nic_send::
0006 .dbline -1
0006 .dbline 31
0006 ; }
0006 ;
0006 ;
0006 ; void nic_send(void)
0006 ; {
0006 .dbline 32
0006 ; NICBeginPacketSend(uip_len);
0006 00910000 lds R16,_uip_len
000A 10910100 lds R17,_uip_len+1
000E 0E940000 xcall _rtl8019BeginPacketSend
0012 .dbline 35
0012 ;
0012 ; // send packet, using data in uip_appdata if over the IP+TCP header size
0012 ; if( uip_len <= TOTAL_HEADER_LENGTH )
0012 86E3 ldi R24,54
0014 90E0 ldi R25,0
0016 20900000 lds R2,_uip_len
001A 30900100 lds R3,_uip_len+1
001E 8215 cp R24,R2
0020 9305 cpc R25,R3
0022 48F0 brlo L9
0024 .dbline 36
0024 ; {
0024 .dbline 37
0024 ; NICSendPacketData(uip_buf, uip_len);
0024 20910000 lds R18,_uip_len
0028 30910100 lds R19,_uip_len+1
002C 00E0 ldi R16,<_uip_buf
002E 10E0 ldi R17,>_uip_buf
0030 0E940000 xcall _rtl8019SendPacketData
0034 .dbline 38
0034 ; }
0034 19C0 xjmp L10
0036 L9:
0036 .dbline 40
0036 ; else
0036 ; {
0036 .dbline 41
0036 ; uip_len -= TOTAL_HEADER_LENGTH;
0036 80910000 lds R24,_uip_len
003A 90910100 lds R25,_uip_len+1
003E C697 sbiw R24,54
0040 90930100 sts _uip_len+1,R25
0044 80930000 sts _uip_len,R24
0048 .dbline 42
0048 ; NICSendPacketData(uip_buf, TOTAL_HEADER_LENGTH);
0048 26E3 ldi R18,54
004A 30E0 ldi R19,0
004C 00E0 ldi R16,<_uip_buf
004E 10E0 ldi R17,>_uip_buf
0050 0E940000 xcall _rtl8019SendPacketData
0054 .dbline 43
0054 ; NICSendPacketData((unsigned char *)uip_appdata, uip_len);
0054 20910000 lds R18,_uip_len
0058 30910100 lds R19,_uip_len+1
005C 00910000 lds R16,_uip_appdata
0060 10910100 lds R17,_uip_appdata+1
0064 0E940000 xcall _rtl8019SendPacketData
0068 .dbline 44
0068 ; }
0068 L10:
0068 .dbline 46
0068 ;
0068 ; NICEndPacketSend();
0068 0E940000 xcall _rtl8019EndPacketSend
006C .dbline -2
006C L8:
006C .dbline 0 ; func end
006C 0895 ret
006E .dbend
006E .dbfunc e nic_poll _nic_poll fi
006E ; packetLength -> R10,R11
.even
006E _nic_poll::
006E 0E940000 xcall push_gset3x
0072 .dbline -1
0072 .dbline 56
0072 ; }
0072 ;
0072 ;
0072 ;
0072 ; #if UIP_BUFSIZE > 255
0072 ; unsigned int nic_poll(void)
0072 ; #else
0072 ; unsigned char nic_poll(void)
0072 ; #endif /* UIP_BUFSIZE > 255 */
0072 ; {
0072 .dbline 59
0072 ; unsigned int packetLength;
0072 ;
0072 ; packetLength = NICBeginPacketRetreive();
0072 0E940000 xcall _rtl8019BeginPacketRetreive
0076 5801 movw R10,R16
0078 .dbline 62
0078 ;
0078 ; // if there's no packet or an error - exit without ending the operation
0078 ; if( !packetLength )
0078 0030 cpi R16,0
007A 0107 cpc R16,R17
007C 19F4 brne L12
007E X0:
007E .dbline 63
007E ; return 0;
007E 0027 clr R16
0080 1127 clr R17
0082 12C0 xjmp L11
0084 L12:
0084 .dbline 66
0084 ;
0084 ; // drop anything too big for the buffer
0084 ; if( packetLength > UIP_BUFSIZE )
0084 8CED ldi R24,1500
0086 95E0 ldi R25,5
0088 8A15 cp R24,R10
008A 9B05 cpc R25,R11
008C 28F4 brsh L14
008E .dbline 67
008E ; {
008E .dbline 68
008E ; NICEndPacketRetreive();
008E 0E940000 xcall _rtl8019EndPacketRetreive
0092 .dbline 69
0092 ; return 0;
0092 0027 clr R16
0094 1127 clr R17
0096 08C0 xjmp L11
0098 L14:
0098 .dbline 73
0098 ; }
0098 ;
0098 ; // copy the packet data into the uIP packet buffer
0098 ; NICRetreivePacketData( uip_buf, packetLength );
0098 9501 movw R18,R10
009A 00E0 ldi R16,<_uip_buf
009C 10E0 ldi R17,>_uip_buf
009E 0E940000 xcall _rtl8019RetreivePacketData
00A2 .dbline 74
00A2 ; NICEndPacketRetreive();
00A2 0E940000 xcall _rtl8019EndPacketRetreive
00A6 .dbline 77
00A6 ;
00A6 ; #if UIP_BUFSIZE > 255
00A6 ; return packetLength;
00A6 8501 movw R16,R10
00A8 .dbline -2
00A8 L11:
00A8 0E940000 xcall pop_gset3x
00AC .dbline 0 ; func end
00AC 0895 ret
00AE .dbsym r packetLength 10 i
00AE .dbend
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -