https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2022573#M57474 <P>Hello NXP developers, I recently used the LPCX presso 55s69 board official routine usb_device_composite_hid_audio_unified modify the code, the USB protocol stack I changed from 5 to 6, the USB enumeration passed, but the number of endpoints used is more than 4, the host can not send data to the microcontroller, I want to know why, please help me, thank you.</P> Mon, 06 Jan 2025 12:22:28 GMT MHY_0878 2025-01-06T12:22:28Z https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2022573#M57474 <P>Hello NXP developers, I recently used the LPCX presso 55s69 board official routine usb_device_composite_hid_audio_unified modify the code, the USB protocol stack I changed from 5 to 6, the USB enumeration passed, but the number of endpoints used is more than 4, the host can not send data to the microcontroller, I want to know why, please help me, thank you.</P> Mon, 06 Jan 2025 12:22:28 GMT https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2022573#M57474 MHY_0878 2025-01-06T12:22:28Z https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2023752#M57485 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/245163">@MHY_0878</a>&nbsp;</P> <P>LPC55S69 supports up to 16 endpoints.</P> <P>And i checked your project.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Harry_Zhang_0-1736317636895.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/318522i60CC97D652C4171B/image-size/medium?v=v2&amp;px=400" role="button" title="Harry_Zhang_0-1736317636895.png" alt="Harry_Zhang_0-1736317636895.png" /></span></P> <P>BR</P> <P>Harry</P> Wed, 08 Jan 2025 06:27:37 GMT https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2023752#M57485 Harry_Zhang 2025-01-08T06:27:37Z https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2028031#M57526 The problem has been solved. Thank you for your reply.<BR />mhy Wed, 15 Jan 2025 06:30:29 GMT https://community.nxp.com/t5/LPC-Microcontrollers/An-issue-with-adding-an-endpoint-on-the-USB-Audio-journey-of/m-p/2028031#M57526 MHY_0878 2025-01-15T06:30:29Z