#include???
??
#include???
#include???
#include???
#include???
#include		//?printf（）


#include		//?struct?termios

#include		//?read（）?write（）

#include		//?strlen（）

#include		//?O_RDWR?O_NDELAY?etc

#include?		//?TIOCMGET?TIOCM_RTS?etc.

#include?		//?assert（）


#define?BAUDRATE????????B115200??
#define?UART_DEVICE?????“/dev/ttyAMA1“??
??
#define?FALSE??-1??
#define?TRUE???0??

?

////////////////////////////////////////////////////////////////////////////////?

??void?write_uart1（int?fdchar?*?buffint?size）
{??
???int?res;

???res?=?write（fdbuffsize）;?

}

?
int?main（int?argc?char?*argv[]）??
{??
??
????int????fd?c=0?res;??
????int?i=0?;
????char??buf[256];
????int?flag;??
????char?buff1[]?=?{0xaa0x550x050x000x330x440x140x900x00};?
????printf（“matt?Start...\n“）;?

????fd?=?open（UART_DEVICE?O_RDWR）;??
??
????if?（fd?????????perror（UART_DEVICE）;??
????????return?1??;??
????}??
??
????printf（“Open...\n“）;??
??
????printf（“Reading...\n“）;?
????sleep（1）;?
????ioctl（fd?TIOCMGET?&flag）;
????flag&=?~TIOCM_RTS;
????//flag|=?TIOCM_RTS;?
????ioctl（fd?TIOCMSET?&flag）;

????write_uart1（fdbuff1sizeof?（buff1））;?
????while（1）;
??//??read_uart1（fdbuf255）;
??/*?while（i<10）?{??
???????i++;
????????res?=?read（fd?buf?255）;??
??
???????
????????buf[res]=0;??
??
????????printf（“%s\n“?buf）;??
??????????fflush（stdout）;
????????if?（buf[0]?==?0x0d）??
????????????printf（“\n“）;??
??????????
????????if?（buf[0]?==?‘@‘）?break;??
????}??
??*/
????printf（“Close...\n“）;??
????close（fd）;??
??
????return?0;??
}???

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1673??2017-09-21?16:30??rrs485\read485.c

?????文件???????5770??2017-09-13?16:19??rrs485\rs485_ok.c

?????目錄??????????0??2017-09-21?16:29??rrs485

-----------?---------??----------?-----??----

?????????????????7443????????????????????3