My test program calls: bRet=ReadFile(hDevice, buffer,4, &ulRead,NULL); buffer is a pointer of ULONG type. Since the length in ReadFile refers to the number of bytes, it is followed by 4. The value of ...
Can ZigBee use PWM to control the dimming of an external bulb? I saw the ZigBee PWM dimming code is to control the LED dimming on the ZigBee board, so how to adjust the dimming of an external bulb? Do...
I am planning to make a board myself to play with. I will use the USB port for power supply and downloading. I have used an STC microcontroller board like this. How should I make a board like this?...