User's Manual
Table Of Contents
- AT+i Command Set
- Scope
- AT+i Command Guidelines
- AT+i Command Format
- Escape Code Sequence
- Socket Command Abort
- Flexible Host and Modem Interfaces
- Auto Baud Rate Detection
- High Speed USART
- Reset via Serial Link
- Entering Rescue Mode during Runtime
- Internet Session Hang-Up Procedure (Modem Only)
- Modem Startup
- Analog-to-Digital Converter
- iChip Readiness Indication
- Programming iChip’s Serial Number into Flash Memory
- Programming a Unique ID String into Flash Memory
- General Format
- AT+i Result Code Summary
- Report Status
- Connection
- E-mail Send Commands
- E-Mail Retrieve
- HTTP Client Interface
- SerialNET Mode Initiation
- Web Server Interface
- File Transfer Protocol (FTP)
- +i[@]FOPN — FTP Open Session
- +iFDL — FTP Directory Listing
- +iFDNL — FTP Directory Names Listing
- +iFMKD — FTP Make Directory
- +iFCWD — FTP Change Working Directory
- +iFSZ — FTP File Size
- +iFRCV — FTP Receive File
- +iFSTO — FTP Open File for Storage
- +iFAPN — FTP Open File for Appending
- +iFSND — FTP Send File Data
- +iFCLF — FTP Close File
- +iFDEL — FTP Delete File
- +iFCLS — FTP Close Session
- Telnet Client
- Direct Socket Interface
- +iSTCP — Open and Connect A TCP Socket
- +iSUDP — Open A Connectionless UDP Socket
- +iLTCP — Open A TCP Listening Socket
- +iLSST — Get A Listening Socket’s Active Connection Status
- +iSST — Get A Single Socket Status Report
- +iSCS — Get A Socket Connection Status Report
- +iSSND[%] — Send A Byte Stream to A Socket
- +iSRCV — Receive A Byte Stream from A Socket’s Input Buffer
- +iGPNM — Get Peer Name for A Specified Socket
- +iSDMP — Dump Socket Buffer
- +iSFSH[%] — Flush Socket’s Outbound Data
- +iSCLS — Close Socket
- Special Modem Commands
- Wireless LAN Mode
- IP Registration
- DHCP Client
- DHCP Server
- iRouter Mode
- Ad-Hoc Networks
- Secure Socket Protocol
- Network Time Client
- MIME Encapsulated E-Mail Messages
- Flow Control
- Remote Firmware Update
- iChip Parameter Update
- iChip Embedded Web Server
- Introduction
- Features
- Web Server Modes
- The Application Website
- Parameter Tags
- iChip Configuration Mode
- Host Interaction Mode
- Website Creation, Packing, and Uploading
- Manipulating Variables in the Application Website
- Security and Restrictions
- Parameter Update Error Handling
- File Types Supported by iChip’s Web Server
- iChip RAS Server
- SerialNET Theory of Operation
- File Transfer Protocol (FTP) Theory of Operation
- Telnet Client Operation
- Secure Socket Protocol Theory of Operation
- Remote AT+i Service
- Nonvolatile Parameter Database
- Parameter Descriptions
- +iFD — Restore All Parameters to Factory Defaults
- Operational Parameters
- +iXRC — Extended Result Code
- +iDMD — Modem Dial Mode
- +iMIS — Modem Initialization String
- +iMTYP — Set Type of Modem Connected to iChip
- +iWTC — Wait Time Constant
- +iTTO — TCP Timeout
- +iPGT — PING Timeout
- +iMPS — Max PPP Packet Size
- +iTTR — TCP Retransmit Timeout
- +iBDRF — Define A Fixed Baud Rate on Host Connection
- +iBDRM — Define A Fixed Baud Rate on iChip( Modem Connection
- +iBDRD — Baud Rate Divider
- +iAWS — Activate WEB Server Automatically
- +iLATI — TCP/IP Listening Socket to Service Remote AT+i Commands
- +iFLW — Set Flow Control Mode
- +iCPF — Active Communications Platform
- +iPSE — Set Power Save Mode
- +iSDM — Service Disabling Mode
- +iDF — IP Protocol ‘Don’t Fragment’ Bit Value
- +iCKSM — Checksum Mode
- +iHIF — Host Interface
- +iMIF — Modem Interface
- +iADCL — ADC Level
- +iADCD — ADC Delta
- +iADCT — ADC Polling Time
- +iADCP — ADC GPIO Pin
- +iRRA — iChip Readiness Report Activation
- +iRRHW — iChip Readiness Hardware Pin
- ISP Connection Parameters
- Server Profile Parameters
- +iLVS — ‘Leave on Server’ Flag
- +iDNSn — Define Domain Name Server IP Address
- +iSMTP — Define SMTP Server Name
- +iSMA — SMTP Authentication Method
- +iSMU — Define SMTP Login User Name
- +iSMP — Define SMTP Login Password
- +iPOP3 — Define POP3 Server Name
- +iMBX — Define POP3 Mailbox Name
- +iMPWD — Define POP3 Mailbox Password
- +iNTSn — Define Network Time Server
- +NTOD — Define Network Time-of-Day Activation Flag
- +iGMTO — Define Greenwich Mean Time Offset
- +iDSTD — Define Daylight Savings Transition Rule
- +iPDSn — Define PING Destination Server
- +iPFR — PING Destination Server Polling Frequency
- +iUFn — User Fields and Macro Substitution
- Email Format Parameters
- +iXFH — Transfer Headers Flag
- +iHDL — Limit Number of Header Lines
- +iFLS — Define Filter String
- +iDELF — Email Delete Filter String
- +iSBJ — Email Subject Field
- +iTOA — Define Primary Addressee
- +iTO — Email ‘To’ Description/Name
- +iREA — Return Email Address
- +iFRM — Email ‘From’ Description/Name
- +iCCn — Define Alternate Addressee
- +iMT — Media Type Value
- +iMST — Media Subtype String
- +iFN — Attachment File Name
- HTTP Parameters
- RAS Server Parameters
- LAN Parameters
- Wireless LAN Parameters
- +iWLCH — Wireless LAN Communication Channel
- +iWLSI — Wireless LAN Service Set Identifier
- +iWLWM — Wireless LAN WEP Mode
- +iWLKI — Wireless LAN Transmission WEP Key Index
- +iWLKn — Wireless LAN WEP Key Array
- +iWLPS — Wireless LAN Power Save
- +iWLPP — Personal Shared Key Pass-Phrase
- +iWROM — Enable Roaming in WiFi
- +iWPSI — Periodic WiFi Scan Interval
- +iWSRL — SNR Low Threshold
- +iWSRH — SNR High Threshold
- +iWSIn — Wireless LAN Service Set Identifier Array
- +iWPPn — Pre-Shared Key Passphrase Array
- +iWKYn — Wireless LAN WEP Key Array
- +iWSTn — Wireless LAN Security Type Array
- +iWSEC — Wireless LAN WPA Security
- IP Registration Parameters
- SerialNET Mode Parameters
- +iHSRV | +iHSRn — Host Server Name/IP
- +iHSS — Assign Special Characters to Hosts
- +iDSTR — Define Disconnection String for SerialNET Mode
- +iLPRT — SerialNET Device Listening Port
- +iMBTB — Max Bytes To Buffer
- +iMTTF — Max Timeout to Socket Flush
- +iFCHR — Flush Character
- +iMCBF — Maximum Characters before Socket Flush
- +iIATO — Inactivity Timeout
- +iSNSI — SerialNET Device Serial Interface
- +iSTYP — SerialNET Device Socket Type
- +iSNRD — SerialNET Device Re-Initialization Delay
- +iSPN — SerialNET Server Phone Number
- +iSDT — SerialNET Dialup Timeout
- +iSWT — SerialNET Wake-Up Timeout
- +iPTD — SerialNET Packets to Discard
- Remote Firmware Update Parameters
- Remote Parameter Update
- Note: This default value is shipped from the factory. The AT+iFD command does not restore RPG to this value.
- Appendix A
- Appendix B
- Appendix C
- Index
iChip Embedded Web Server
AT+i Programmer‘s Manual Version 8.32 27-7
In addition to specifying iChip configuration parameters and Parameter Tags, it is also
possible to display iChip reports and iChip‘s LAN MAC address. For example:
<table>
<tr>
<td width=250><b>MAC Address: ~MACA~ <b></td>
</tr>
<tr>
<td width=250><b>Bootblock Version: BBIC~RP3~</b> </td>
<td width=400><b>Firmware Version: ~RP1~</b></td>
</tr>
<tr>
<td width=250><b>Serial Number: ~RP5~ </b></td>
<td width=400><b>Hardware Version: ~RP0~</b></td>
</tr>
</table>
27.10 Security and Restrictions
The authorization to view and update iChip‘s configuration parameters, firmware, or
application website via the web can be password-protected using the
AT+iRPG parameter
(Remote Parameter Group/Password).
When the RPG parameter in an iChip device contains a value, it is considered a password
that restricts remote iChip parameter viewing/updates. By default, iChip‘s configuration
site can be viewed (browsed), unless the Security Disable Mode (SDM) bit 3 is set, in
which case the user is authenticated by submitting the RPG value. To enable remote
updates, a distant user is always authenticated by submitting that value. The iChip
configuration site includes an authentication form that automatically pops up on the
remote browser when parameter updates are attempted. The password submitted through
this form must match the actual value of iChip‘s local RPG parameter. Otherwise, remote
value updates are rejected.
iChip uses the industry standard SHA1 algorithm to authenticate the remote user.
According to SHA1, the password typed into the authentication form is not literally
communicated back to iChip. Rather, a SHA1-encrypted token is transferred. To achieve
this, iChip‘s web server sends a JavaScript, which calculates SHA1 encryption at the
browser end together with the authentication form. iChip also issues a different random
number, used as part of the encryption key, each time authentication is required, to
eliminate the possibility of impersonation based on eavesdropping to a legal
authentication session.
If the RPG parameter is empty (AT+iRPG=‗‘), remote iChip configuration parameter
update is fully restricted. In other words, it is not possible to update configuration
parameter values using a remote browser. Conversely, if the RPG parameter contains an
(*) character (match any), the configuration parameters can be updated freely, without
requiring authentication at all.