程序设计思路，采用查询定时器中断标志的方式来启动AD转换器TLC549的工作，在读取AD转换器的数据之后，再对数据进行计算换算为对应的电压值。-Procedures for design ideas, using query timer interrupt flag way to start the AD converter TLC549 work, reading the AD converter data, and perform calculations on the data is converted into a voltage value corresponding to the.