The filter is one of the essential key components in the RF system. It is mainly used for frequency selection - allowing the required frequency signal to pass through and reflecting the unwanted inter
GPIO operations can be performed through the sys file system interface. When the file system operates GPIO, you must first check whether the GPIO you want to operate is occupied by other drivers. If i
There have been posts before that reflect that when performing UART testing, since the UART interface on the board does not provide power to the development board, two USB cables are required, one for