About JFern.5

JFern.5 · 2021-01-26

Hi everyone, I've written this little python script to control the brightness in several LED1642GW drivers connected in daisy chain. According to their Application Note, at page 4, it says you have to send 16 words of 16 bits where the first 15 must ...

JFern.5 · 2020-12-29

Well, as you can see in the datasheet and the application note for LED1642GW, It doesn't use pure SPI, since it doesn't use CS but it requires the Latch Enable (LE) signal.I'd actually like to write an application to manage multiple LED drivers but t...

JFern.5 · 2021-02-04

Well, my problem was I wasn't feeding the drivers with the PWCLK signal so the comparator (page 12 in the Application Note) could not generate a proper dimming signal. Anyway thank you all :grinning_face:

JFern.5 · 2021-01-04

That sample code is apparently for a STM32 MCU, so I think I won't be able to use it in a whole embedded system.

JFern.5 · 2021-01-04

I don't get the point of using an expansion board like X-NUCLEO-LED16A1 :\

JFern.5 · 2021-01-04

Have you read the Application Note for the LED1642GW driver? https://www.st.com/resource/en/application_note/dm00097096-the-led1642gw-and-aled1642gw-startup-guide-stmicroelectronics.pdfYou can see in the figure 3 that you need to set LE on high for s...

JFern.5 · 2020-12-29

Well, In fact I can invert the CS signal modifying the device tree to make it high-active, however LE requires also to be controlled in a middle of a byte. Am I right?

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Brightness control in LED1642GW

GPIO vs SPI for LED1642GW

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