AN4461 datasheet(46/70 Pages) STMICROELECTRONICS

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User interface

AN4461

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DocID026130 Rev 2

9.3

Serial command

This section describes the terminal interface line available on the STLUX385A device. The

serial line allows the configuration of the operating condition, including the current level

(dimming). It also allows to enquire the board status and the value of application

parameters.

This section shows a list of commands available via the serial interface according to the

STEVAL-ILL066V1 demonstration board firmware version V3R28.

The STLUX385A command line interface is accessible via a standard terminal utility

installed on the user's PC.

The serial (TTL 0 - 3.3 V) cable is provided together with the demonstration board. The on-

board connector is identified as UART I/F. The serial line uses only three lines: GND, TX,

RX plus power and ground derived from USB interfaces. The predefined baud rate is

115200, no parity, 8-bit, 1 stop bit, no handshake. The user should identify the PC COM line

number. The PC will also install the serial COM drivers as soon as the cable is connected. If

the driver is not installed or for other problems please call your IT support.

During the power-up and reset the STLUX385A transmits the following strings to the serial

line.

Figure 19. Power-up message

The message is used to verify that the link between the PC and the STLUX385A device is

up and that the correct baud rate is selected. Also the following information is displayed:

•

The string “V3R28” reports the firmware version (3) and revision (28).

•

Firmware time and the date.

•

Options currently enabled. In this example the PFC, the resonant stage (HB) and the

DALI interface are enabled.

•

“Ready” appears when the STLUX385A is ready to receive a command.

EVAL STLUX385-PSR-ZVS V3R28

Build Oct 16 2013 13:44:22 core is 385A ok

Option PFC HB Dali R enabled

Ready

AN4461 Datasheet(PDF) 46 Page - STMicroelectronics