AN4460 datasheet(29/54 Pages) STMICROELECTRONICS

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AN4460

User interface

The serial (TTL 0 - 3.3 V) cable is shipped 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, the baud rate is 115200, no parity, 8-bit, 1 stop bit, no handshake. The user should

identify the PC COM line number, please refer to your local IT department if the COM

number is difficult to retrieve. The PC also installs the serial COM drivers as soon as the

cable is connected. If the driver is not installed, please call your IT support.

Warning:

The command line executes all the commands entered. The

user has the responsibility to use the correct commands as

per circuitry adopted. For example, should the user configure

1 A current through a 300 mA LED chain, the LEDs could be

damaged.

The STLUX385A, during power-up and reset, sends the following strings to the serial line.

The strings are received and displayed on the console:

Figure 9. Console screen during startup

This message is used to verify that the link between the PC and the STLUX385A is up and

that the correct baud rate is selected. The strings “VxRx” report the firmware version and

revision and, on the next line, the time and the date during the compilation process. “Ready”

appears when the STLUX385A chip is ready to receive a command.

At this point, the user can interact with the STLUX385A using one of the following

commands.

Note:

The command list is shown by the “?” command.

EVALSTLUX385 - 4chLED VxRx

Build Jan 20 2012 14 : 00 : 44

Ready

AM16709v1

AN4460 데이터시트(PDF) 29 Page - STMicroelectronics