Led1642GW It´s possible to switch on some led´s of this driver without sending commands all time?

[Cristobal Garcia]

Posted on June 25, 2018 at 10:23

Hello i�m new in st community.

I�m developing with this led driver, I�ve read the application note of this driver (AN4374) and i�ve done the example to turn on all leds, i had to send  to the led driver these commands:

* Brightness data latch 15 times ( 16 bits register ;  Data =1  and with LE=1  during  last three rising edge clocks).

* Brightness global latch one time (

16 bits register ;  Data =1 and 

with LE=1  during  last five rising edge clocks).

* Write switch one time

(

16 bits register ;  Data =1 and 

with LE=1  during  last two rising edge clocks).

With these commands i could turn on all leds but i had to send all these commands to the driver all time in a while loop.

Do you know if the driver can latch the last command sent and leave leds ON? 

Where can I find this information?

Regards.

#led1642gw-latch-last-command #led1642gw

[dieter 123]

Posted on July 10, 2018 at 11:53

did you have a look at this nuceleo expansion board board and its firmware, which is available online?

https://www.st.com/content/st_com/en/products/ecosystems/stm32-open-development-environment/stm32-nucleo-expansion-boards/stm32-ode-power-drive-hw/x-nucleo-led16a1.html