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build/applications/main.o: In function `usbd_cdc_start':
main.c:(.text.usbd_cdc_start+0x4): undefined reference to `cdc_acm_init'
build/applications/main.o: In function `usbd_cdc_send':
main.c:(.text.usbd_cdc_send+0x4): undefined reference to `cdc_acm_data_send_with_dtr_test'
build/applications/main.o: In function `usbh_start':
main.c:(.text.usbh_start+0x4): undefined reference to `usbh_initialize'

大佬，github上源码编译不过，麻烦指教下，谢谢

大佬：我跑例程，为什么msh输入usbh_start 报这个错误，求支援，谢谢
msh />(rt_object_get_type(&sem->parent.parent) == RT_Object_Class_Semaphore) assertion failed at function:rt_sem_release, line number:613

@sakumisu
好的，已加你qq，感谢

LINK rtthread.elf
build\packages\CherryUSB-latest\core\usbh_core.o: In function `usbh_initialize':
usbh_core.c:(.text.usbh_initialize+0x8c): undefined reference to `_usbh_class_info_end'
usbh_core.c:(.text.usbh_initialize+0x90): undefined reference to `_usbh_class_info_start'
collect2.exe: error: ld returned 1 exit status
scons: *** [rtthread.elf] Error 1
scons: building terminated because of errors.

大佬，usbd_cdc 我测试没问题，但是usbh编译不过去，是什么原因呢？

感谢指点，添加了就OK了，大佬开发的cherryusb框架真棒，使用起来超级方便，已经star

大佬，这个编译不过，提示几处未定义参数，但是项目中能够查到定义，请问这个是什么问题？
In file included from packages\CherryUSB-latest\class\cdc\usbh_cdc_acm.c:6:0:
packages\CherryUSB-latest\core/usbh_core.h:119:29: error: 'CONFIG_USBHOST_MAX_ENDPOINTS' undeclared here (not in a function)
     struct usbh_endpoint ep[CONFIG_USBHOST_MAX_ENDPOINTS];
                             ^
packages\CherryUSB-latest\core/usbh_core.h:123:49: error: 'CONFIG_USBHOST_MAX_INTF_ALTSETTINGS' undeclared here (not in a function)
     struct usbh_interface_altsetting altsetting[CONFIG_USBHOST_MAX_INTF_ALTSETTINGS];
                                                 ^
packages\CherryUSB-latest\core/usbh_core.h:132:32: error: 'CONFIG_USBHOST_MAX_INTERFACES' undeclared here (not in a function)
     struct usbh_interface intf[CONFIG_USBHOST_MAX_INTERFACES];
                                ^
packages\CherryUSB-latest\core/usbh_core.h:161:31: error: 'CONFIG_USBHOST_MAX_EHPORTS' undeclared here (not in a function)
     struct usbh_hubport child[CONFIG_USBHOST_MAX_EHPORTS];
                               ^
scons: *** [build\packages\CherryUSB-latest\class\cdc\usbh_cdc_acm.o] Error 1
scons: building terminated because of errors.

程序烧进去，没跑起来是什么情况呀？

完全可以，cherryusb的osal层有适配freertos