stm32f0系列单片机枚举失败

cherry-embedded / CherryUSB

CherryUSB is a tiny, beautiful and portable USB host and device stack for embedded system with USB IP

https://cherryusb.readthedocs.io/

Apache License 2.0

1.22k stars 259 forks source link

Closed yongfeicao closed 2 years ago

yongfeicao commented 2 years ago

尝试在stm32f072上测试，发现以下问题：需要实现int usb_dc_attach(void); 同时在头文件中追加相关函数。在做了上面的修改之后电脑可以发现usb设备，但是枚举失败，提示获取不了设备描述符

sakumisu commented 2 years ago

加群讨论吧

yongfeicao commented 2 years ago

只需要将代码中的宏定义修改就可以：宏定义PMA_ACCESS 的值从 2修改为1