AN4461 Datasheet, PDF (68/70 Pages) STMicroelectronics – 100 W LED street lighting application using STLUX385A

Firmware download procedure
AN4461
The user should verify that the output values for each step are marked.
4. Connect the serial interface to the computer.
5. After a correct download the STLUX385A starts and shows the version/release of new
firmware, as illustrated in Figure :
Figure 30. Power-up message after a firmware update
EVAL STLUX385-PSR-ZVS V3R20
Build Jul 1 2013 16:01:26 core is 385A
HALT - Debug Mode Activated
6. After a firmware upgrade, the application starts in a safety mode. All the output PWMs
are kept to low levels and both PFC and half-bridge stages are disabled. This mode is
identified by the string “HALT - Debug Mode Activated” shown on screen. Also the
green status LED toggles (1 second on and 1 second off) on the green LED (RUN).
7. To enable the board operation, the users have to use the “in” command on the serial
line, using the proper parameters as described in Section 9.3 on page 46. The
command used to enable the full functionality is “in 7 0". Only after a new power-on or
a reset the new configurations are applied and the STEVAL-ILL066V1 demonstration
board starts with full functionality and the startup message is changed into:
Figure 31. Power-up message of a fully enabled board
EVAL STLUX385-PSR-ZVS V3R20
Build Jul 1 2013 16:01:26 core is 385A
Option PFC HB Dali enabled
Ready
As an example, in the screen capture, the PFC is active, the half-bridge is active and the
DALI interfaces is enable. Note the “Ready” message; it states that the STEVAL-ILL066V1
board is ready to receive a new serial line command.
68/70
DocID026130 Rev 2