first working web server example
This commit is contained in:
Joerg Deckert
parent
58f833001c
commit
2bdb7084da
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@ -2482,6 +2482,21 @@ DAT
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strNVRAMFile byte "nvram.sav",0 'contains the 56 bytes of NVRAM, if RTC is not available
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PRI lan_txflush | handleidx
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''funktionsgruppe : lan
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''funktion : Warten, bis Sendepuffer geleert ist
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''eingabe : -
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''ausgabe : -
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''busprotokoll : [070][get.handleidx][put.ok]
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'' : handleidx - lfd. Nr. der Verbindung
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'' : ok - Sendepuffer leer (Wert egal)
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handleidx := bus_getchar
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sock.flush(sockhandle[handleidx])
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bus_putchar(TRUE)
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PRI lan_start | hiveid, hivestr, strpos, macpos, i, a
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''funktionsgruppe : lan
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''funktion : Netzwerk starten
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@ -2586,20 +2601,34 @@ PRI lan_connect | ipaddr, remoteport, handle, handleidx, i
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PRI lan_listen | port, handle, handleidx, i
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''funktionsgruppe : lan
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''funktion : Port für eingehende TCP-Verbindung öffnen
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'' bei bereits bestehendem Socket nur handleidx zurücksenden
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''eingabe : -
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''ausgabe : -
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''busprotokoll : [074][sub_getword.port][put.handleidx]
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''busprotokoll : [074][get.handleidx][sub_getword.port][put.handleidx]
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'' : handleidx - lfd. Nr. der bestehenden Verbindung ($FF wenn neu)
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'' : port - zu öffnende Portnummer
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'' : handleidx - lfd. Nr. der Verbindung (index des kompletten handle)
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handleidx := bus_getchar
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port := sub_getword
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'freien Pufferabschnitt suchen
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if handleidx <> $FF 'bestehender (kein neuer) Socket
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if sock.isValidHandle(sockhandle[handleidx]) 'Socket gültig
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bus_putchar(handleidx) 'alten handleidx zurücksenden
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return
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i := 0
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if handleidx == $FF 'neue Verbindung
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repeat sock#sNumSockets
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'freien Pufferabschnitt suchen
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if bufidx[i] == $FF '0xFF: nicht zugewiesen
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quit
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i++
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else 'bereits aufgebaute, abgebrochende Verbindung
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repeat sock#sNumSockets
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if bufidx[i] == handleidx 'zum Handle gehörender Buffer
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quit
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i++
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ifnot (handle := sock.listen(port, @bufmain[i*rxlen], rxlen, @buftx[i*txlen], txlen)) == -102
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handleidx := handle.byte[0] 'extract the handle index from the lower 8 bits
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@ -2642,9 +2671,10 @@ PRI lan_close | handleidx, i
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'reservierten Pufferabschnitt freigeben
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i := 0
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repeat sock#sNumSockets
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if bufidx[i++] == handleidx '0xFF: nicht zugewiesen
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bufidx[i++] := $FF
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if bufidx[i] == handleidx '0xFF: nicht zugewiesen
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bufidx[i] := $FF
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quit
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i++
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PRI lan_rxtime | handleidx, timeout, t, rxbyte
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@ -204,7 +204,8 @@ A_BLT = %00000000_00000000_00001000_00000000
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a_DCF_GetYear '77
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' ---------------------------------------------- LAN-FUNKTIONEN
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#81, a_lanStart 'Start Network
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#80, a_lanTXFlush 'Warten, bis Sendepuffer geleert ist
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a_lanStart 'Start Network
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a_lanStop 'Stop Network
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a_lanConnect 'ausgehende TCP-Verbindung öffnen
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a_lanListen 'auf eingehende TCP-Verbindung lauschen
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@ -1036,6 +1036,19 @@ PUB rtcTest: available 'Test if RTC Chip is ava
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CON ''------------------------------------------------- LAN_FUNKTIONEN
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PUB lan_txflush(handleidx)
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''funktionsgruppe : lan
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''funktion : Warten, bis Sendepuffer geleert ist
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''eingabe : -
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''ausgabe : -
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''busprotokoll : [070][put.handleidx][get.ok]
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'' : handleidx - lfd. Nr. der Verbindung
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'' : ok - Sendepuffer leer (Wert egal)
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bus_putchar1(gc#a_lanTXFlush)
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bus_putchar1(handleidx)
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bus_getchar1
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PUB lanstart 'LAN starten
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''funktionsgruppe : lan
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''funktion : Netzwerk starten
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@ -1075,16 +1088,18 @@ PUB lan_connect(ipaddr, remoteport): handleidx
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bus_putword1(remoteport)
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handleidx := bus_getchar1
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PUB lan_listen(port): handleidx
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PUB lan_listen(oldhandleidx, port): handleidx
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''funktionsgruppe : lan
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''funktion : Port für eingehende TCP-Verbindung öffnen
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''eingabe : -
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''ausgabe : -
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''busprotokoll : [074][sub_putword.port][get.handleidx]
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''busprotokoll : [074][put.handleidx][sub_putword.port][get.handleidx]
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'' : oldhandleidx - lfd. Nr. der bestehenden Verbindung ($FF wenn neu)
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'' : port - zu öffnende Portnummer
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'' : handleidx - lfd. Nr. der Verbindung (index des kompletten handle)
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bus_putchar1(gc#a_lanListen)
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bus_putchar1(oldhandleidx)
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bus_putword1(port)
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handleidx := bus_getchar1
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@ -33,17 +33,29 @@ Notizen :
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OBJ
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ios: "reg-ios"
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gc : "glob-con"
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str: "glob-string"
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num: "glob-numbers"
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CON
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_CLKMODE = XTAL1 + PLL16X
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_XINFREQ = 5_000_000
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#define __DEBUG
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VAR
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byte handleidx 'Handle web connection
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byte reqstr[32] ' request string
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byte webbuff[128] ' incoming header buffer
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long cog, random_value
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PUB main
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rr_start
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ios.start
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ifnot (ios.admgetspec & gc#A_LAN)
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ios.sddmset(ios#DM_USER) 'u-marker setzen
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@ -55,20 +67,228 @@ PUB main
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ios.stop 'Ende
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ios.printnl
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ios.lanstart 'LAN-Treiber initialisieren (eigene IP-Adresse usw. setzen)
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handleidx := $FF
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#ifdef __DEBUG
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ios.print(@strWaitConnection)
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#endif
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repeat
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if (handleidx := ios.lan_listen(handleidx,80)) == $FF 'Empfangs-Socket auf Port 80 öffnen
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ios.print(@strErrorNoSock)
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quit
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if ios.lan_isconnected(handleidx) 'bei bestehender Verbindung...
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#ifdef __DEBUG
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ios.print(@strConnected)
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#endif
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if webThread == 0
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ios.lan_txflush(handleidx)
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ios.lan_close(handleidx)
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handleidx := $FF
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ios.stop
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PRI webThread | i, j, uri, args
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if webReadLine == 0 ' read the first header, quit if it is empty
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return 0
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bytemove(@reqstr, @webbuff, 32) ' copy the header to a temporary request string for later processing
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' obtain get arguments
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if (i := indexOf(@reqstr, string(".cgi?"))) <> -1 ' was the request for a *.cgi script with arguments?
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args := @reqstr[i + 5] ' extract the argument
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if (j := indexOf(args, string("="))) <> -1 ' find the end of the argument
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byte[args][j] := 0 ' string termination
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' read the rest of the headers
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repeat until webReadLine == 0 ' read the rest of the headers, throwing them away
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sendStr(string("HTTP/1.0 200 OK",13,10,13,10)) ' print the HTTP header
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if indexOf(@reqstr, string("ajax.js")) <> -1 ' ajax.js
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sendStr(@ajaxjs)
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elseif indexOf(@reqstr, string("rand.cgi")) <> -1 ' rand.cgi
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sendStr(str.trimCharacters(num.ToStr(long[rr_random_ptr], num#DEC)))
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elseif indexOf(@reqstr, string("img.bin")) <> -1 ' img.bin
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ios.lan_txdata(handleidx, 0, 32768)
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else
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' default page
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sendStr(string("<html><body><script language=javascript src=ajax.js></script><b>It Works!<br><br>Random Number:</b><div id=a></div><script language=javascript>ajax('rand.cgi', 'a', 10);</script></body></html>"))
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return 0
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PRI webReadLine | i, ch
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repeat i from 0 to 126
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ch := ios.lan_rxtime(handleidx, 500)
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if ch == 13
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ch := ios.lan_rxtime(handleidx, 500)
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if ch == -1 or ch == 10
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quit
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webbuff[i] := ch
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webbuff[i] := 0
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return i
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PRI sendStr (strSend) : error
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#ifdef __DEBUG
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ios.print(string(" > "))
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ios.print(strSend)
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ios.printnl
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#endif
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error := ios.lan_txdata(handleidx, strSend, strsize(strSend))
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PRI indexOf(haystack, needle) | i, j
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'' Searches for a 'needle' inside a 'haystack'
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'' Returns starting index of 'needle' inside 'haystack'
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repeat i from 0 to strsize(haystack) - strsize(needle)
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repeat j from 0 to strsize(needle) - 1
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if byte[haystack][i + j] <> byte[needle][j]
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quit
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if j == strsize(needle)
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return i
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return -1
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DAT
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{{
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┌───────────────────────────────────────────┬────────────────┬────────────────────────┬───────────────┐
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│ Real Random v1.2 │ by Chip Gracey │ (C)2007 Parallax, Inc. │ 23 March 2007 │
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├───────────────────────────────────────────┴────────────────┴────────────────────────┴───────────────┤
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│ │
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│ This object generates real random numbers by stimulating and tracking CTR PLL jitter. It requires │
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│ one cog and at least 20MHz. │
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│ │
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├─────────────────────────────────────────────────────────────────────────────────────────────────────┤
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│ Background and Detail: │
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│ │
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│ A real random number is impossible to generate within a closed digital system. This is because │
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│ there are no reliably-random states within such a system at power-up, and after power-up, it │
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│ behaves deterministically. Random values can only be 'earned' by measuring something outside of the │
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│ digital system. │
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│ │
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│ In your programming, you might have used 'var?' to generate a pseudo-random sequence, but found the │
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│ same pattern playing every time you ran your program. You might have then used 'cnt' to 'randomly' │
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│ seed the 'var'. As long as you kept downloading to RAM, you saw consistently 'random' results. At │
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│ some point, you probably downloaded to EEPROM to set your project free. But what happened nearly │
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│ every time you powered it up? You were probably dismayed to discover the same sequence playing each │
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│ time! The problem was that 'cnt' was always powering-up with the same initial value and you were │
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│ then sampling it at a constant offset. This can make you wonder, "Where's the end to this madness? │
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│ And will I ever find true randomness?". │
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│ │
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│ In order to have real random numbers, either some external random signal must be input, or some │
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│ analog system must be used to generate random noise which can be measured. We're in luck here, │
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│ because it turns out that the Propeller does have sufficiently-analog subsystems which can be │
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│ exploited for this purpose -- each cog's CTR PLLs. These can be exercised internally to good │
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│ effect, without any I/O activity. │
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│ │
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│ This object sets up a cog's CTRA PLL to run at the main clock's frequency. It then uses a pseudo- │
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│ random sequencer to modulate the PLL's target phase. The PLL responds by speeding up and slowing │
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│ down in a an endless effort to lock. This results in very unpredictable frequency jitter which is │
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│ fed back into the sequencer to keep the bit salad tossing. The final output is a truly-random │
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│ 32-bit unbiased value that is fully updated every ~100us, with new bits rotated in every ~3us. This │
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│ value can be sampled by your application whenever a random number is needed. │
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│ │
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├─────────────────────────────────────────────────────────────────────────────────────────────────────┤
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│ Revision History v1.0 released 21 March 2007 │
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│ │
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│ v1.1 Bias removal has been added to ensure true randomness. Released 22 March 2007. │
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│ v1.2 Assembly code made more efficient. Documentation improved. Released 23 March 2007. │
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│ │
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└─────────────────────────────────────────────────────────────────────────────────────────────────────┘
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}}
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PUB rr_start : okay
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'' Start real random driver - starts a cog
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'' returns false if no cog available
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'Reset driver
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rr_stop
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'Launch real random cog
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return cog := cognew(@entry, @random_value) + 1
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'allow 5ms to launch and randomize
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waitcnt(clkfreq / 200 + cnt)
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PUB rr_stop
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'' Stop real random driver - frees a cog
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'If already running, stop real random cog
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if cog
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cogstop(cog~ - 1)
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PUB rr_random_ptr : ptr
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'' Returns the address of the long which receives the random value
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''
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'' A random bit is rotated into the long every ~3us, resuling in a
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'' new long every ~100us, on average, at 80MHz. You may want to double
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'' these times, though, to be sure that you are getting new bits. The
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'' timing uncertainty comes from the unbiasing algorithm which throws
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'' away identical bit pairs, and only outputs the different ones.
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return @random_value
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DAT
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' ┌─────────────────────────┐
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' │ Real Random Generator │
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' └─────────────────────────┘
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org
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entry movi ctra,#%00001_111 'set ctra to internal pll mode, select x16 tap
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movi frqa,#$020 'set frqa to system clock frequency / 16
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movi vcfg,#$040 'set vcfg to discrete output, but without pins
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mov vscl,#70 'set vscl to 70 pixel clocks per waitvid
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:twobits waitvid 0,0 'wait for next 70-pixel mark ± jitter time
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test phsa,#%10111 wc 'pseudo-randomly sequence phase to induce jitter
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rcr phsa,#1 '(c holds random bit #1)
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add phsa,cnt 'mix PLL jitter back into phase
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rcl par,#1 wz, nr 'transfer c into nz (par shadow register = 0)
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wrlong _random_value,par 'write random value back to spin variable
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waitvid 0,0 'wait for next 70-pixel mark ± jitter time
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test phsa,#%10111 wc 'pseudo-randomly sequence phase to induce jitter
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rcr phsa,#1 '(c holds random bit #2)
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add phsa,cnt 'mix PLL jitter back into phase
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if_z_eq_c rcl _random_value,#1 'only allow different bits (removes bias)
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jmp #:twobits 'get next two bits
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_random_value res 1
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DAT
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ajaxjs byte "var ajaxBusy=false;function ajax(a,b,c){if(ajaxBusy){return}ajaxBusy=true;var d;try{d=new XMLHttpRequest()}catch(e){d=new ActiveXObject('Microsoft.XMLHTTP')}var f=function(){if(d.readyState==4){if(b){document.getElementById(b).innerHTML=d.responseText}ajaxBusy=false;if(c>0){setTimeout('ajax(\''+a+'\',\''+b+'\','+c+')',c)}}};d.open('GET',a+'?'+(new Date()).getTime(),true);d.onreadystatechange=f;d.send(null)}"
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byte 0
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DAT ' Locale
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#ifdef __LANG_EN
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'locale: english
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strNoNetwork byte 13,"Administra doesn't provide network functions!",13,"Please load admnet.",13,0
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strWaitConnection byte "Waiting for client connection...",13,0
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strConnected byte "Client connected...",13,0
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strErrorNoSock byte "No free socket.",13,0
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#else
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'default locale: german
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strNoNetwork byte 13,"Administra stellt keine Netzwerk-Funktionen zur Verfügung!",13,"Bitte admnet laden.",13,0
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strWaitConnection byte "Warte auf Client-Verbindung...",13,0
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strConnected byte "Client verbunden...",13,0
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strErrorNoSock byte "Kein Socket frei...",13,0
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#endif
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