This program demonstrates how to configure the C8051F930 to use routinesin STDIO.h to write to and read from the UART interface. The program reads a character using the STDIO routine getkey(), outputs that characterto the screen, and then outputs the ASCII hex value of that character.-这个程序演示了如何配置C8051F930使用例程在STDIO。 h写信给,念UART接口。程序读取字符使用STDIO常规getkey()、输出那个字符对屏幕,然后输出十六进制的价值ASCII字符。