ISSUE 1: PA9/OTG_FS_VBUS +5V Tolerance When the STM32F105 is configured as a USB device, the PA9/OTG_FS_VBUS is used to detect the presense of a USB host. ST Micro evaluation designs show the PA9/OTG_FS_VBUS pin connected to +5 VBUS through a zero ohm resistor. There are tw...
目前测试必须把VBUS接到5V，PC才能识别到板子。但是在短接ISP接USB时，不需要接VBUS，PC就能识别到STM...
When the STM32F105 is configured as a USB device, the PA9/OTG_FS_VBUS is used to detect the presense of a USB host. ST Micro evaluation designs show the PA9/OTG_FS_VBUS pin connected to +5 VBUS through a zero ohm resistor. There are two potential problems with this approach. The...
STM32F105 PA9/OTG_FS_VBUS Issues https://www.cnblogs.com/shangdawei/p/3264724.html F105 DFU模式下PA9引脚用来检测USB线缆,若电平在2.7~5v则认为插入usb设备(检测到usb线缆条件满足),接下来按流程图执行。
ISSUE 1: PA9/OTG_FS_VBUS +5V Tolerance When the STM32F105 is configured as a USB device, the PA9/OTG_FS_VBUS is used to detect the presense of a USB host. ST Micro evaluation designs show the PA9/OTG_FS_VBUS pin connected to +5 VBUS through a zero ohm resistor. ...