Problems encountered in system design and solutions: Problem 1: Cannot use the virtual debugging assistant to establish a GPRS connection. Solution: After a detailed analysis, it was found that it was not a problem with my own operation. I searched the Internet and found that if I wanted to establish a GPRS connection, I must have an IP address exposed to the public network, but the laboratory is dynamically randomly assigned, so the solution is to use a wireless network card or a router to dial up to the Internet. Problem 2: Writing and debugging the main program. When writing the program, it was written in modules, so many problems occurred when it was combined later, and only the initial value set was displayed. After the analysis of the teacher and classmates, it was found that there was a problem with the interrupt. After an afternoon of debugging and programming, the problem was finally solved in time. Problem 3: Hardware welding process. After the software simulation results, the circuit board welding began. However, some errors occurred after the welding was completed. After inspection, it was found that some capacitors or resistors were not too accurate, which would cause some deviations or interference after the circuit came out.
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