SUPER MICRO Computer MIIC-203 - Manual (Page 39)

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Slave Transmit Message
This command should be issued to iPort/AFM in response to a Slave Transmit
Request (/STR). This command causes iPort/AFM to write the specified data bytes
to the requesting I
2
C Master Receiver device.
Enter Message Bytes (1 or more Printable ASCII or Hex-equivalent ~00..~FF), then
Press Enter, or ESCape to Cancel.
Note 1: Upon receiving a Slave Transmit request from a Master Receiver device on
the I
2
C Bus, iPort/AFM outputs a Slave Transmit Request to its Host device, and
initiates an I
2
C Clock Stretch (SCL Low) until a Slave Transmit Text command is
received from the Host computer. While clock stretching, no other messages can be
transmitted on the I
2
C Bus.
Note 2: The tilde (~) character and the Carriage Return (CR) character are used as
special marker characters within all iPort/AFM transmit text messages. These
characters may not be used within the text of a message, but must be replaced by the
following "Hex equivalent" characters:
Tilde replaced by "~7E"
Carriage Return replaced by "~0D"
iPort/AFM automatically translates "Hex equivalent" characters to their single-byte
value for transmission across the I
2
C Bus.
All entered data bytes are transmitted to the requesting Master Receiver device.
Slave Transmit stops upon receiving the first negative acknowledgment (Nack) from
the Master Receiver.
Command: /Stext[CR] 'Slave Transmit Message
Response 1: /STC[CR] 'Slave Transmit Complete
Response 2: /I88[CR] 'iPort Connection Not Open
Response 3: /I8A[CR] ‘Slave Transmit Request Not Active, Cmd Ignored
Default Setting: None
Examples:
/Sabcd1234[CR] ‘ASCII Printable characters "abcd1234"
/S~00~01~02[CR] ‘Binary data bytes 00, 01,02