67 lines
1.1 KiB
C
67 lines
1.1 KiB
C
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/**************************************************
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file: demo_tx.c
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purpose: simple demo that transmits characters to
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the serial port and print them on the screen,
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exit the program by pressing Ctrl-C
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compile with the command: gcc demo_tx.c rs232.c -Wall -Wextra -o2 -o test_tx
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**************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef _WIN32
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#include <Windows.h>
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#else
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#include <unistd.h>
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#endif
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#include "rs232.h"
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int main()
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{
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int i=0,
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cport_nr=0, /* /dev/ttyS0 (COM1 on windows) */
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bdrate=9600; /* 9600 baud */
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char mode[]={'8','N','1',0},
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str[2][512];
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strcpy(str[0], "The quick brown fox jumped over the lazy grey dog.\n");
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strcpy(str[1], "Happy serial programming!\n");
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if(RS232_OpenComport(cport_nr, bdrate, mode, 0))
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{
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printf("Can not open comport\n");
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return(0);
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}
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while(1)
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{
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RS232_cputs(cport_nr, str[i]);
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printf("sent: %s\n", str[i]);
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#ifdef _WIN32
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Sleep(1000);
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#else
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usleep(1000000); /* sleep for 1 Second */
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#endif
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i++;
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i %= 2;
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}
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return(0);
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}
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