AT+i Programmer's Manual - SE Spezial-Electronic AG

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23.4 Software Flow Control Diagram in Socket Send Send Bytes Wait for I/OK END Wait for I/Error(nnn) Yes ISSUE <strong>AT+i</strong>SSND:,: No No SZ>256 Error code? Issue "- - - " End Yes Yes Yes No Yes Pause? Figure 23-2 Software Flow Control in Socket Send Send Next Byte Byte Received from iChip ? Yes Wait code? Yes Error code? No Yes Continue code? No No Yes Wait for RP4 reply Byte Received from iChip? No No Flow Control
23.5 Host iChip Hardware Flow Control Flow Control As an alternative to the software flow control method, which requires some software attention on behalf of the host, iChip offers a hardware flow control mode. This mode is selected by setting iChip‘s FLW parameter Bit 0, using the <strong>AT+i</strong>FLW command. Note that to set FLW Bit 0, the ~CTSH signal needs to be LOW (enabled), otherwise iChip returns I/ERROR (063). This convention safeguards iChip from lockup, which may arise if FLW Bit 0 is set while the ~CTSH signal is constantly HIGH. For hardware flow control to operate properly, the ~CTS and ~RTS signals between the host and iChip UARTS must be interconnected. The iChip ~CTSH and ~RTSH signals can be shorted to circumvent hardware flow control. Under this mode, iChip assumes that the host transmission might be paused by deasserting the ~CTS signal. The host must adhere to this convention. Most UARTs support hardware flow control. However, if this is not the case, iChip‘s ~CTS signal must be monitored by the host software on a general purpose I/O. The host can also pause iChip by de-asserting its ~CTS signal. If a transmission error occurs during processing of a send command (EMB, SSND, TBSN, FSND), iChip accepts all remaining characters pertaining to the current command (as specified by the parameter) before returning the relevant I/ERROR response. HOST ~CTS ~RTS ~Tx ~Rx ~CTSH ~RTSH ~Tx ~Rx iChip Figure 23-3 Minimum Hardware Flow Control Connections
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Pub. No. 20-5000-08_21, January 200
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Revision History 20-5000-08_21 Revi
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Contents 10.1 +IWWW — ACTIVATE EM
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Contents 25.3 HEADER PARAMETER NAME
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Contents 33.4.5 +iRDL — Number of
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Contents 33.17.2 +iDSLT — DHCP Se
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Tables Tables Table 2-1 AT+i Comman
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AT+i Command Set If a syntax error
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2 General Format AT+i[[ | #UFn]…]
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General Format Command Function Par
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General Format Command Function Par
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AT+i Result Code Summary 85 RESERVE
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4 Report Status 4.1 +iRPi — Repor
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Report Option Format 10 I/(, , , )
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5 Connection 5.1 +iBDRA — Forces
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5.3 +iTUP — Triggered Internet Se
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5.4 +iDOWN — Terminate Internet S
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6 E-mail Send Commands E-mail Send
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Notes: E-mail Send Commands I/OK If
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7 E-Mail Retrieve 7.1 +iRML — Ret
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7.3 +iRMM — Retrieve Mail Message
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E-Mail Receive (RMM) Flow Diagram I
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-or- specified. HTTP Client Interfa
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9 SerialNET Mode Initiation 9.1 +iS
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10 Web Server Interface 10.1 +iWWW
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11 File Transfer Protocol (FTP) 11.
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11.3 +iFDNL — FTP Directory Names
Page 55 and 56: 11.5 +iFCWD — FTP Change Working
Page 57 and 58: 11.7 +iFRCV — FTP Receive File Sy
Page 59 and 60: 11.9 +iFAPN — FTP Open File for A
Page 61 and 62: 11.11 +iFCLF — FTP Close File Syn
Page 63 and 64: 11.13 +iFCLS — FTP Close Session
Page 65 and 66: 12.2 +iTRCV — Telnet Receive Data
Page 67 and 68: 12.4 +iTBSN[%] — Telnet Send A By
Page 69 and 70: 12.6 +iTCLS — Telnet Close Sessio
Page 71 and 72: 13.2 +iSUDP — Open A Connectionle
Page 73 and 74: Direct Socket Interface 13.4 +iLSST
Page 75 and 76: 13.6 +iSCS — Get A Socket Connect
Page 77 and 78: Result Code: Direct Socket Interfac
Page 79 and 80: Direct Socket Interface I/ERROR If
Page 81 and 82: 13.10 +iSDMP — Dump Socket Buffer
Page 83 and 84: 13.12 +iSCLS — Close Socket Synta
Page 85 and 86: 15 Wireless LAN Mode Wireless LAN M
Page 87 and 88: 16 IP Registration IP Registration
Page 89 and 90: 17 DHCP Client DHCP Client A DHCP c
Page 91 and 92: 19 Ad-Hoc Networks Ad-Hoc Networks
Page 93 and 94: 20 Secure Socket Protocol Secure So
Page 95 and 96: Secure Socket Protocol When the AT+
Page 97 and 98: 20.6 +i[@]FOPS — Secure FTP Open
Page 99 and 100: 22 MIME Encapsulated E-Mail Message
Page 101 and 102: 22.3 MIME-Encapsulated E-Mail Messa
Page 103 and 104: The control characters are defined
Page 105: 23.3 Software Flow Control During A
Page 109 and 110: Remote Firmware Update 2. If the do
Page 111 and 112: 25 iChip Parameter Update 25.1 Intr
Page 113 and 114: 25.4 Uploading A Parameters Update
Page 115 and 116: 26.3 Web Server Modes Two web serve
Page 117 and 118: 26.7 Host Interaction Mode iChip Em
Page 119 and 120: ~headline~ iChip Embedded Web Ser
Page 121 and 122: iChip Embedded Web Server Tags. Thi
Page 123 and 124: 27.3 RAS Theory of Operation iChip
Page 125 and 126: 28 SerialNET Theory of Operation 28
Page 127 and 128: SerialNET Theory of Operation bytes
Page 129 and 130: SerialNET Theory of Operation If th
Page 131 and 132: Accumulate Quiet Time 29.5 FTP Rece
Page 133 and 134: Secure Socket Protocol Theory of Op
Page 135 and 136: [ CA_default_policy ] commonName =
Page 137 and 138: Secure Socket Protocol Theory of Op
Page 139 and 140: Remote AT+i Service iChip LAN will
Page 141 and 142: Nonvolatile Parameter Database Para
Page 147 and 148: 33.3 Operational Parameters 33.3.1
Page 149 and 150: 33.3.3 +iMIS — Modem Initializati
Page 151 and 152: 2. AT+iMIS=‖ 3. AT+iBDRF=3 4. AT+
Page 153 and 154: 33.3.6 +iTTO — TCP Timeout Syntax
Page 155 and 156: 33.3.8 +iMPS — Max PPP Packet Siz
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Nonvolatile Parameter Database 33.3
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33.3.14 +iFLW — Set Flow Control
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33.3.16 +iPSE — Set Power Save Mo
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33.3.18 +iDF — IP Protocol ‘Don
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33.4 ISP Connection Parameters 33.4
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33.4.3 +iUSRN — Define Connection
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33.4.5 +iRDL — Number of Times to
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33.5 Server Profile Parameters 33.5
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33.5.3 +iSMTP — Define SMTP Serve
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33.5.7 +iPOP3 — Define POP3 Serve
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33.7 Email Format Parameters Nonvol
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33.7.4 +iDELF — Email Delete Filt
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33.7.6 +iTOA — Define Primary Add
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33.7.8 +iREA — Return Email Addre
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33.7.10 +iCCn — Define Alternate
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33.7.12 +iMST — Media Subtype Str
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33.8 HTTP Parameters Nonvolatile Pa
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33.9 RAS Server Parameters Nonvolat
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33.9.3 +iRAP — Password for RAS A
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33.10.2 +iDIP — iChip Default IP
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33.10.4 +iIPG — IP Address of the
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33.11 Wireless LAN Parameters 33.11
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33.11.3 +iWLWM — Wireless LAN WEP
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33.11.5 +iWLKn — Wireless LAN WEP
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33.11.7 +iWLPP — Personal Shared
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33.12 IP Registration Parameters No
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33.16 Secure Socket Protocol Parame
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33.16.3 +iCERT — Define SSL3/TLS1
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33.17 DHCP Server Parameters Nonvol
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34 Appendix A 34.1 MIME content typ
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Type Subtype image jpeg gif ief g3f
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MT=0 MST=‖text-plain‖ # CONNECT
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37 Index +i!RP11 - Ad-Hoc Network R
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Header Parameter Names and Values .
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