STM32-USB之Buffer Description Table

时间 2021-01-11

原文原文链接

一. stm32的USB接口每个端点对应两个分组缓冲区，其地址与范围位于分组存储区。从STM32的数据手册中存储器映像->寄存器组起始地址看到： (注意地址范围大小为1024，APB1按32BIT对齐访问，但此SRAM是由256个16BIT字组成) 这512BYTE的SRAM便是分组存储区；而Buffer Description Table（缓冲区描述表）则用于定位与划分各个端点的缓冲区缓冲区

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