As shown in the circuit diagram, the electrolytic capacitors C13, C11, C15, and C16 in the power supply part were all tantalum capacitors at the beginning. There is a very strange phenomenon, that is,...
I have set the environment variables in the BAT configuration file: set WINCEMAP=1 set WINCECOD=1 After compilation, the corresponding .map and .cod files should be generated. However, the .map file c...
I am writing an evc serial port program for serial communication between arm and dsp. But I have encountered a problem in writing and debugging. This is the serial port receiving thread in the program...
I use TRF7960 to read and write M1 cards. The circuit part refers to the evaluation board of Lm3s9b96. The antenna part on my board has output 13.56M sine wave. Now I can read and write registers (0x0...
In the assembly language, there is BL FUN and then there is a B. What does this "B." do? I have read several books on ARM instructions but none of them explain it clearly. Please give me some advice. ...
Our company is engaged in wireless communication. We have a formal office building of more than 90 square meters in Luohu District. It is located in the center of the city with convenient transportati...