不懂这是什么意思呀,步骤跟正点原子里面的操作完全一样,为啥我编译就有warning
..HALLIBSrcstm32f4xx_ll_usb.c(786): warning: #3108-D: attribute "__packed__" does not apply here
USBx_DFIFO(ch_ep_num) = *((__packed uint32_t *)src);
..HALLIBSrcstm32f4xx_ll_usb.c(812): warning: #3108-D: attribute "__packed__" does not apply here
*(__packed uint32_t *)dest = USBx_DFIFO(0);
..HALLIBSrcstm32f4xx_ll_usb.c: 2 warnings, 0 errors
是因为我的是盗版么?
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