Maxim Integrated 6612_OMU_S2_URT_V1_13 - Manual (Page 6)

6612_OMU_S2_URT_V1_13 Firmware Description Document FDD_6612_010
6 Rev. 1.1
3 Serial Communication
The serial communication with the 78M6612 takes place over a UART (UART0) interface. The default
settings for the UART of the 78M6612 are given below:
Baud Rate: 38400bps
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: Xon/Xoff
The host’s serial interface port is required to implement these settings on its UART. To verify
communication between the host and the 78M6612, the host must send a (carriage return) to the
78M6612. Communication is verified when the 78M6612 returns a > (greater than sign) known as the
command prompt. An example is given below:
The host sends the following to the 78M6612:
The 78M6612 sends the following back to the host:
>
Commands the host may send to the 78M6612 in order for the host to configure the 78M6612 or to
receive the measurement data are given in the next section.
4 Command Line Interface
Firmware 6612_OMU_S2_URT_V1_13 contains an instruction set called the Command Line Interface
(CLI), which facilitates communication via UART between the 78M6612 and the host processor. The CLI
provides a set of commands which are used by the host to configure and to obtain information from the
78M6612.
4.1 Identification and Information Commands
The I command is used to identify the revisions of Demo Code and the contained CE code. The host
sends the I command to the 78M6612 as follows:
>I
The 78M6612 will send back to the host the following:
TSC 78M6612 OMU S2 URT v1.13, July 20 2009(c)2008 Teridian Semiconductor Corp.
All Rights Reserved
CE6612_OMU_S2_A01_V1_2
>