About ardnew

ardnew · 2019-12-10

I am developing an application using an STUSB4500 and an external MCU STM32G031K8 that should be able to read USB PD Source capabilities and allow the user to dynamically set custom PDOs.I have based the majority of my code off of the example softwar...

ardnew · 2019-11-18

After getting help setting up a basic USB-C sink application in this thread, I can successfully detect cable attach/detach events through the relevant callbacks installed via ST USBPD API -- but only for a single cable orientation. The UCPD1 interrup...

ardnew · 2019-11-12

I purchased a NUCLEO-G431KB to begin and test firmware development of my project, using the latest STM32CubeIDE with the STM32Cube_FW_G4_V1.1.0 library BSP.Following several USBPD library examples of a sink application -- and some considerable config...

ardnew · 2019-12-10

Disregard this question, the code is actually behaving as expected! My problem appears to be related to a timing issue, where halting with breakpoints in the debugger was causing Type-C or PD messages to be dropped. Not setting breakpoints during the...

ardnew · 2019-11-19

Great, worked like a charm, thanks!You state a correction will be delivered in March -- do I also need to wait until then for that Application Note you mentioned in my previous thread? I'm very anxious to learn what the App Note is going to detail (a...

ardnew · 2019-11-18

Yup, that's what I did to resolve it, everything seems stable now.I have a new problem that I think is unrelated to this topic, so I will post a new question and refer here for traceability. Thanks!

ardnew · 2019-11-16

Have you researched into dead battery mode of USB-C PD? The entire purpose of this functionality is to present the Rd pull-downs so that the source provides that base +5V needed to power your core and PD controller. I think this might be what you're ...

ardnew · 2019-11-15

After making that change, I am now getting a strange error. When I leave the application running for around 30 seconds, the system Hard Fault interrupt is triggered. Presumably related to the new system timer I set:HardFault_Handler() at stm32g4xx_it...

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How can I determine Source PDO capabilities?

How do you detect USB Type-C cable attach/detach events in both cable orientations?

How to create basic USBPD sink application with STM32G431KB?

Re: How can I determine Source PDO capabilities?

Re: How do you detect USB Type-C cable attach/detach events in both cable orientations?

Re: How to create basic USBPD sink application with STM32G431KB?

Re: UCPD sink with external pull-down resistors?

Re: How to create basic USBPD sink application with STM32G431KB?