Thread device to automatically start commissioning when it starts

[taoyinzhou]

Hi All, 

  If I want a Thread device to automatically start commissioning when it starts, is there a code example in Nordic SDK?

  Now I just found the API interface, called otJoinerStart, which also returned OK, but never got to the callback function.

  Really appreciate any help you can provide. 

  Best, 

  Tao

[Edvin]

Hello Tao,

What SDK version do you use?

Regardless you can check out the simple_coap_server and simple_coap_client examples, which will form a network. In the nRF5 SDK for Thread and Zigbee, it uses thread_instance_init() in main.c with .autocommissioning = true.

If that is not what you are looking for, please let me know.

Best regards,

Edvin

[taoyinzhou]

Hello Edvin,

The SDK version is "nRF5_SDK_for_Thread_and_Zigbee_v4.1.0_32ce5f8".

I am going to use OTBR to form a Thread network with the Thread device by commssioning. So if I use the method thread_instance_init() in main.c with .autocommissioning = true on the Thread device, where should I set pskd?

The process I want to implement is that I run the command on the OTBR.
ot-ctl commissioner start
ot-ctl commissioner joiner add eui64 pskd.
Then let the Thread device boot up and commissioning will be done automatically.

Best,
Tao

[Edvin]

Try using otThreadSetPskc(). Description from thread_ftd.h:

/**
 * Set the Thread PSKc
 *
 * This function will only succeed when Thread protocols are disabled.  A successful
 * call to this function will also invalidate the Active and Pending Operational Datasets in
 * non-volatile memory.
 *
 * @param[in]  aInstance   A pointer to an OpenThread instance.
 * @param[in]  aPskc       A pointer to the new Thread PSKc.
 *
 * @retval OT_ERROR_NONE           Successfully set the Thread PSKc.
 * @retval OT_ERROR_INVALID_STATE  Thread protocols are enabled.
 *
 * @sa otThreadGetPskc
 *
 */
otError otThreadSetPskc(otInstance *aInstance, const otPskc *aPskc);

Does it work if you don't add the pre shared key?

Try checking the OpenThread Border Router test description.

BR,

Edvin