说明：  程序设计根据任务要求，程序内容主要包括：初始化串口，用于输入和输出。 SPI1 初始化。 将测试数据写入 SST25VF016B 指定页然后读出进行校验，将读出的内容通过串口输出。
(Program design according to the task requirements, the program content mainly includes: initialization serial port, for input and output. SPI1 initialization. The test data is written into the specified page of sst25vf016b, and then read out for verification. The read content is output through the serial port.)