PNI CommBoard User Manual

Page 23

PNI Sensor Corporation

DOC#1018122 r02

PNI CommBoard User Manual

Page 21

Y or y

– Hold Always

This command causes the indefinite delay of processing subsequent characters
received from the host until a „Q‟ character is received. Characters received from the
host, other than „Q‟ or „F‟, will be stored in a 100 character receive buffer. Once a
„Q‟ is received the system will begin processing characters in the receive buffer in the
order received.

– Quit Hold

Receipt of this character immediately releases any hold command presently set. This

includes the DRDY Hold or the Hold Always commands. Characters in the receive

buffer will begin processing. Note that only capital „Q‟ is recognized.

– Flush I

C Receive Buffer

This command flushes the receive buffer. If there is a Hold command presently set

and the buffer contains characters, this command purges the characters in the buffer.

– Reset

This command resets the CommBoard‟s internal I

C state machine and external

interface.

– Set I

C Clock Speed

“&” followed by a single-digit sets the I

C clock speed. A value of “0” sets the clock

speed to ~32 kHz. A value of “1” to “9” sets the speed to ~100x the value, in kHz.
(ex. a value of 3 sets the clock speed ~300 kHz.) A value of “A” sets the clock speed
to ~1 MHz.

T or t

– Terminal Mode

“T” turns on verbose terminal mode. “t” turns off terminal mode.