USB-PD on STM32G473

[fjahn9]

Hi everyone!

I have generated a code from CubeMX for USB-PD in bare-metal configuration like this:
  

Then I started testing the code and the function USBPD_PE_Init at this line:

 /* PE SET UP : Port 0 */
    CHECK_PE_FUNCTION_CALL(USBPD_PE_Init(_port_index, (USBPD_SettingsTypeDef *)&DPM_Settings[_port_index], &DPM_Params[_port_index], &dpmCallbacks));

returned false.

I have looked in the assembler window and found out that some members of 

static const USBPD_PE_Callbacks dpmCallbacks =
  {
    USBPD_DPM_SetupNewPower,
    USBPD_DPM_HardReset,
    NULL,
    USBPD_DPM_Notification,
    USBPD_DPM_ExtendedMessageReceived,
    USBPD_DPM_GetDataInfo,
    USBPD_DPM_SetDataInfo,
    USBPD_DPM_EvaluateRequest,
    NULL,
    NULL,  // Like this one!!!
    USBPD_PE_TaskWakeUp,
#if defined(_VCONN_SUPPORT)
    USBPD_DPM_EvaluateVconnSwap,
    USBPD_DPM_PE_VconnPwr,
#else
    NULL,
    NULL,
#endif /* _VCONN_SUPPORT */
    USBPD_DPM_EnterErrorRecovery,
    USBPD_DPM_EvaluateDataRoleSwap,
    USBPD_DPM_IsPowerReady
  };

are not allowed to be NULL. So I wonder if this is normal or I'm missing something?

THX!

[FBL · Accepted solution]

Hi @fjahn9 

To better understand and reproduce the issue, could you please share your project setup (e.g. project files and configuration)?

If it contains confidential information, you can either send it to me in a private message or grant access to this GitHub account:: https://github.com/FBLSTM

We will treat any shared information as confidential and use it only to analyze this issue.

Thank you!

[fjahn9]

Hi FBL,
thank you for your reply, but somehow during preparing the project to be sent, I regenerated the project in CubeMX one more time and now I can run my softwere without errors! I can see how software reacts on cable attachments, so this question can be marked as solved. Anyway, can you post here how to switch a Data role? I have used USBPD_DPM_RequestDataRoleSwap(PortNum) function, but nothing happened. Could you have a look at my project's files anyway?

Thank you!