
STM32H750VBT6挂接外部NAND Flash
STM32H7 openamp
如何利用TIM1触发HRTIM TIMA生成频率为20Hz的100ns脉冲波?
STM32双核H7核间通信的方法
stm32上部署yolo的问题
使用STM32F1能实现USB和fatfs同时访问SD卡吗
STM32H723VGT6的唯一DFSDM的时钟可以同时输出给2个sigma-delta吗?
STM32H7+SAI+DMA双缓冲配置失败.
STM32H743+SDRAM
STM32F407读写U盘出现程序卡死问题
OTG模块的DM DP支持软件动态配置上下拉。
DP/DM integrated pull-up and pull-down resistors controlled by the OTG_HS core
depending on the current role of the device. As a peripheral, it enables the DP pull-up
resistor to signal full-speed peripheral connections as soon as VBUS is sensed to be at
a valid level (B-session valid). In host mode, pull-down resistors are enabled on both
DP/DM. Pull-up and pull-down resistors are dynamically switched when the peripheral
role is changed via the host negotiation protocol (HNP).
请问是不是使用内部的usb控制器就可以内部上下拉,使用外部的还是要自己加上下拉电路