This course uses the Zhengdian Atom development board as the platform and introduces the use of each function of Lwip in more detail. Including: LWIP transplantation method, memory management, data packets, UDP and TCP and other knowledge.
I need to design an optocoupler isolation circuit, the input is a 5-24v digital signal, the output is 3.3v connected to the GPIO port (digital input DO) of stm32, please recommend an optocoupler chip
After the SD card is initialized, it keeps sending commands. When will the initialization be completed? The order of sending commands is: CMD5-------->CMD0------>CMD1-------->ACMD41(CMD55+AMCD41) ----
I transplanted the DM9000AEP driver under the BOOTLOADER of the Youlong PXA270 development board. The hardware is also designed according to the DM9000AEP manual, but I can't read the PID and VID. Wha
The root causes of problems in the building control industry and the establishment of a standard system - Professor Jiang Yi, an academician of the Chinese Academy of Engineering Recently, the "Engine