Hello, I can’t get USB communication to work. I am testing on NUCLEO-L433RC-P In Embed studio I have a target NUCLEO-L433RC-P and I use the library mbed-os mbed-os-5.15 (I have the older version because of the MQTT communication libraries that work with this OS version) I have the USB connected …

Hello Lukas, I see you are from same country :slight_smile: USBSerial (not sure about CDC) you need manage DTR signal so it depends on your host APP if correctly manage it. BR, Jan

Hello JohnnyK, so I have successfully solved the USB. One problem was in the driver itself on the pC, the other in the call to the connect function, which is not needed at all, although it tempts you to use it. Otherwise, exactly what I feared happened. By switching to OS6, I was unable to get the…

Hello Lucas, this is strange because how I see to the library uses just 4 things from Mbed Timer DigitalOut SPI wait functions the rest seems to be Wiznet own implementation and I do not think these 4 APIs cause the problem. But you are not alone - W5500 ethernet driver - #6 by xeenych I do …

Hello JohnnyK, once again I spent a few late hours at the computer and did some tests to try to find a working library and verify my WIZ850io module… 1. Test Test of the WIZ850io Ethernet module with the Bluepill board and source code from the Internet ( GitHub - geekshow/mbed-os6-stm32-w5500-mqtt…

Did you try to debug? For exact line where the code stops. Maybe also try to downgrade MbedOS to version 6.14 or lower because of some changes in SPI. For read_ms use this Why is Timer's "read_ms" method deprecated in the upcoming Mbed OS 6? - #7 by hudakz BR, Jan

Hello JohnnyK, another tests with debug. It frozen because the SPI communication is not working correctly- no valid answer from LAN module. (and the connect function don’t have timeout in this case) When I am using on Nucleo-L433 SPI1 on these pins - it is not working! EthernetInterface wiz(PA…

Hi, Good to know my guess was close and Wiznet lib is working. The external Smps is equipped on the Nucleo boards with -p suffix like on Nucleo-L433RC-P. According to user manual UM2206 there is a onboard jumper which will deactivate the Smps. So you can try to do it and test if the SPI_1 will wo…

So I’m definitely done for the day. For 2 months I have not been able to make a stable LAN and MQTT connection on MBED. Ignoring the fact that I had to fix about 100 bugs in the libraries that are available (why if they are not functional), it is still unstable and the system crashes. Today when I f…

Hello Lukas, I’m sorry for your situation and good luck in the future. BR, Jan

Thank you very much. I’m really flustrated. Especially about things that I think should be reliable by now. What I’m observing: Conflicts between timers in the library and tickers in the main program. Wiznet and MQTT use internal timers for timeouts, if a ticker (or more) is defined in the main pr…

NUCLEO-L433 problem with USB

Mbed OS

MultipleMonomials (Jamie Smith) April 7, 2024, 10:56pm 27

I mean like, drop a breakpoint here, on the hardfault handler itself.

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NUCLEO-L433 problem with USB

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