About BBame

BBame · 2020-01-31

No matter what we try, nothing happens. For case 2, the L9945 receives the PWM.Thank you in advance. Best regads: Balázs Bámer

BBame · 2020-01-22

Hi All,We have problem reading register values from L9945. We use STM32G474RE to communicate with it and the project was made using current STM32CubeMX and its FreeRTOS.Here are the SPI parameters in main.c: hspi2.Instance = SPI2; hspi2.Init.Mode ...

BBame · 2020-02-04

We have found the problem. The default overcurrent detection voltage was the lowest possible, to ensure the power-on behavior won't do any harm to the circuit. The L9945 kept on shutting down any FET starting to conduct immediately. By setting the OC...

BBame · 2020-01-23

I reply to myself. A collegue has pointed out that perhaps the L9945 wants to forward the command to its siblings via daisy chain. And yes, this was the case. Turning off CS between two words yields correct SPI communication.

User statistics

User Activity

Can anyone please send a minimum set of config parameters and digital input settings for L9945 to - switch a high-side FET on channel 1 on and off via SPI - turn a motor in one direction on bridge 1.

L9945 SPI register read problem

Re: Can anyone please send a minimum set of config parameters and digital input settings for L9945 to - switch a high-side FET on channel 1 on and off via SPI - turn a motor in one direction on bridge 1.

Re: L9945 SPI register read problem