[size=3][color=blue][b]I went to a factory for testing some time ago: a workshop was powered by a 80KVA transformer alone, and the three-phase four-wire was directly pulled from the transformer distri...
IssueVendorTransfer failed to write to Device, GetLastError is 31 My USB_DEVICE_REQUEST is like this req.bmRequestType = USB_TYPE_VENDOR|USB_RECIP_DEVICE; //(0x02lpUsbFuncs,pDrv->hDevice, NULL,NULL, U...
Using the query working mode, compile a serial communication program to realize the serial communication between the single-chip microcomputer and the PC, in which the sending and receiving of PC data...
Development board used: STM32F407ZGTb of Zhengdian Atom - ExplorerUse the IAR version, IAR Embedded Workbench for ARM 7.80.4.12495, as shown belowIAR version informationUse ST-Link for online program ...
by jandar of Qianjia.com Author's note: I have published several basic introduction articles on IP high-definition monitoring systems and comments on some foreign IPC products. Now, at the request of ...