Does HF expansion command support available?

Troubleshooting
1

Using hfp_hf_at_data_req to send an extended AT command like char atStr = “AT+XAPL=0000-0000-0100,7\r\0”; results in rejection responses only. What could be the reason?

2

Is it a problem with the ‘at’ sending format? It works normally on other platforms.

3

What exactly is the captured HCI log?

4

WeChat Work Screenshot_17752010235560
WeChat Work Screenshot_177520102355601226×211 13 KB

Can you refer to this extended AT command?

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