User's Manual

MaxStream 9XStream™ Wireless OEM Module Manual v2.8

Confidential and Proprietary, ©MaxStream, Inc. 2001

Binary Commands

(cont.)

Note: When parameters are sent, they are always two bytes long with

the Least Significant Byte sent first. When they are read, they

are 1 or 2 bytes long as indicated in the

9XStream Command

Table

(Appendix E).

Binary Command Mode allows multiple commands to be sent in sequence.

When the RTS/CMD pin is asserted, all incoming serial data will be interpreted

as commands. Commands can be sent in sequences of commands and their

associated parameters. If RTS/CMD remains asserted, all received commands

will be executed by the 9XStream module. All modified parameters must be

stored in non-volatile memory by sending the WR command (08H with no

parameters) before powering down or resetting the module or the changes will be

lost.

Commands can be queried for their current value by sending the command

logically ORed with the value 80H (hexadecimal) with RTS/CMD asserted.

When this binary value is sent (with no parameters) the current value of the

command will be sent back, through the DO pin.

Note: For the 9XStream module to recognize a Binary command, the

RT command must be issued from AT Command Mode to enable

binary programming. If binary programming is not enabled,

the module will not recognize when the RTS/CMD pin is

asserted and will therefore not recognize Binary Commands.

Example: This example will set Sleep Mode to the Pin Sleep setting

and store the new Sleep Mode value to non-volatile memory.

(Again, the RT command must be issued in AT Command

Mode to enable binary programming before Binary Command

Mode will work.)

Assert RTS/CMD (Enter command mode.)

Send bytes: (Send SM1 command)

<01H> (Command Byte - SM)

<01H> (Least significant bit of the

Parameter Bytes - 01H)

<00H> (Most significant bit of the

Parameter Bytes – 00H)

Send bytes: (Send WR command)

<08H> (Command Byte - WR)

De-assert RTS/CMD