https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2165502#M35140 <P>在boot中，使用了usb disk ，在跳转到app时，需要对usb deinit，因为app也需要用到usb，但是在sdk中没找到usb deinit的样例呢</P> Tue, 09 Sep 2025 01:28:42 GMT ccc_clive 2025-09-09T01:28:42Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2165502#M35140 <P>在boot中，使用了usb disk ，在跳转到app时，需要对usb deinit，因为app也需要用到usb，但是在sdk中没找到usb deinit的样例呢</P> Tue, 09 Sep 2025 01:28:42 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2165502#M35140 ccc_clive 2025-09-09T01:28:42Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2165807#M35146 <P><a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/216319">@ccc_clive</a>&nbsp;请问，你用的哪个示例代码、SDK版本多少？具体usb部分的代码链接给下。</P> <P>&nbsp;</P> <P><A href="https://github.com/nxp-mcuxpresso/mcuxsdk-examples/tree/main/_boards/evkbimxrt1050/usb_examples" target="_blank">https://github.com/nxp-mcuxpresso/mcuxsdk-examples/tree/main/_boards/evkbimxrt1050/usb_examples</A>&nbsp;</P> Tue, 09 Sep 2025 09:53:05 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2165807#M35146 Sam_Gao 2025-09-09T09:53:05Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2166347#M35152 2.13 usb_host_msd_fat的例程 Wed, 10 Sep 2025 06:40:12 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2166347#M35152 ccc_clive 2025-09-10T06:40:12Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2166530#M35155 <P><a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/216319">@ccc_clive</a></P> <P>抱歉，你是想知道‘host, device’之间的切换吗？</P> <P>在Linux, usb相关driver有标准化的init, deinit。但RTOS或Bare Metal中涉及到不同的逻辑功能，并没有标准的usb init, usb deinit.&nbsp;</P> <P>你可以参考 host转device的demo:&nbsp;<A href="https://github.com/nxp-mcuxpresso/mcuxsdk-examples/blob/main/_boards/evkbimxrt1050/usb_examples/usb_pin_detect_hid_msd/bm/hardware_init.c#L134" target="_blank" rel="noopener">https://github.com/nxp-mcuxpresso/mcuxsdk-examples/blob/main/_boards/evkbimxrt1050/usb_examples/usb_pin_detect_hid_msd/</A></P> Thu, 11 Sep 2025 03:00:37 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/imxrt1052-usb-deinit/m-p/2166530#M35155 Sam_Gao 2025-09-11T03:00:37Z