所有管脚焊接好,没有短路没有虚焊,有些 tm4c 1233正常,但有些就需要手往下压着才能正常运行程序,请问这是跟什么有关呢?芯片问题?PCB板问题、?
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所有管脚焊接好,没有短路没有虚焊,有些 tm4c 1233正常,但有些就需要手往下压着才能正常运行程序,请问这是跟什么有关呢?芯片问题?PCB板问题、?