WL1837MOD: Inquiry about HCI_VS_Set_PCM_Loopback_Enable command

Takayuki Miyazaki

Part Number: WL1837MOD
Other Parts Discussed in Thread: AM3356,

Hello Experts,

Our customer is developing their system with AM3356/WL1837MOD. Customer would like to check audio-path-connection between AM3356 and WL1837MOD on production line as easy as possible.

Customer is reading “ WiLinK 8.0 Bluetooth® Vendor-Specific HCI Commands”(https://www.tij.co.jp/jp/lit/ug/swru442b/swru442b.pdf) and noticed “HCI_VS_Set_PCM_Loopback_Enable (0xFE28)” command. Customer is considering that they are able to confirm the hardware-connection by using this command. They means, When customer input the sine-wave which is generated by AM3356 to WL1737MOD, customer is considering that they are able to check the returned-signal from WL1837MOD with this command. Is this thought correct?

It will be appreciated if you will share your advice/comments on this.

Best regards,

Miyazaki

over 5 years ago

0 Jesu over 5 years ago

TI__Mastermind 22935 points

Hi Miyazaki,

Yes the thought is correct. I believe this is the easiest way to verify the PCM interface between the host and the controller.

HCI_VS_Set_PCM_Loopback_Enable will configure the WiLink device to take the audio signal and send it back out via PCM.

Jesu

0 Takayuki Miyazaki over 5 years ago in reply to Jesu

TI__Genius 10120 points

Hi Jesu,

Thank you for your clarification. I shared your comments with our customer. I'd like to wait for their feedback for a while.

Best regards,

Miyazaki

Wi-Fi

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WL1837MOD: Inquiry about HCI_VS_Set_PCM_Loopback_Enable command