Data Sheet

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Ether I/O 24R Users Manual V1.1

Elexol Pty Ltd Version 1.1 Page 29 http://www.elexol.com

ELEXOL

ELECTRONIC SOL UT IONS

Command Set (continued)

Write Disable EEPROM

ASCII Code Bytes Data Function

‘0 5 NU NU NU The EEPROM memory is Write Disabled

Operation: The module will Write Disable the EEPROM memory preventing any Write or Erase

Operations.

Special Conditions: All EEPROM functions must be sent as a single 5-byte packet. A Write Enable

command must be sent before any Write or Erase commands can be performed.

The user cannot write addresses 0-4 at any time. The EEPROM cannot be written

or erased if the J2 jumper is on.

Example: Winsock1.SendData “’0” + Chr$(0) + Chr$(0) + Chr$(0)

Enable SPI Mode PORT A

Command

Sent

ASCII

Code

Bytes Data Function

Sets up Port A for SPI, sets bits 0-2 to appropriate

directions for SPI, stores port value and direction registers

S1A 3 -

Command

ASCII

Code

Bytes Data

S1A 3 -

Operation: Sets up PORTA for SPI mode, it will set the direction register bits 0-2 for the appropriate

setting, it also stores the Port Value and direction register of the port before setting up SPI

Example: Winsock1.SendData “S1A”

Disable SPI Mode PORT A

Command

Sent

ASCII

Code

Bytes Data Function

Disables SPI on Port A, and restores port value and

direction registers that were before an enable SPI

S0A 3 -

Command

ASCII

Code

Bytes Data

S0A 3 -

Operation: Disables SPI on PORT A. Restores direction register and port values before SPI was

enabled.

Example: Winsock1.SendData “S0A”

Send SPI Data on PORT A

Command

Sent

ASCII

Code

Bytes Data Function

Sends out SPI data on PORT A. The number of data bytes

is sent out first followed by the data. The return data will

automatically be clocked in and sent back in the command

reply.

SA 2 + #data bytes +

data

Command

ASCII

Code

Bytes Data

SA 2 + #data bytes +

data

Return

data

Operation: Sends out SPI data on PORTA. The command consists of SA which tells the firmware that

SPI data will be sent on PORTA, then the number of data bytes to be sent out followed by

the data bytes. Below are some examples of the commands

Example: Winsock1.SendData “SA” + Chr$(&H2) + Chr$(&HAA) + Chr$(&H55)

Where Chr$(&H2) is the number of data bytes to be sent via SPI and Chr$(&HAA) and

Chr$(&H55) are the data bytes sent.