这是一个关于stc12c5a60s2的双串口测试程序，编译环境是keilu4，其中stc12c5a60s2的外接晶振是32M,两个串口通讯波特率均设置成1152-This is a stc12c5a60s2 dual serial testing procedures, the compiler environment is keilu4, which stc12c5a60s2 external crystal is 32M, two serial communication baud rate