0.6.3 Changes since last version

[digitaldcpower] / ddcp-script-ttyinit.c

diff --git a/ddcp-script-ttyinit.c b/ddcp-script-ttyinit.c
new file mode 100644 (file)
index 0000000..238c002
--- /dev/null
+++ b/ddcp-script-ttyinit.c
@@ -0,0 +1,42 @@
+/* vim: set sw=8 ts=8 si et: */
+/* Linux software to set the speed on the serial line 
+* Written by Guido Socher 
+* run this program like this:
+* ttydevinit /dev/ttyUSB0 (for usb com1) and then use
+* cat > /dev/ttyUSB0 to write or cat /dev/ttyUSB0 to read the answers
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+
+int main(int argc, char *argv[])
+{
+        struct termios portset;
+        char *device;
+        int fd;
+
+        if (argc != 2){
+                printf("USAGE: ddcp-script-ttyinit /dev/ttyUSB0\n");
+                printf("or     ddcp-script-ttyinit /dev/ttyUSB1\n");
+                exit(0);
+        }
+        device=argv[1];
+
+        /* Set up io port correctly, and open it... */
+        fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
+        if (fd == -1) {
+                fprintf(stderr, "ERROR: open for %s failed.\n",device);
+                exit(1);
+        }
+        tcgetattr(fd, &portset);
+        cfmakeraw(&portset);
+        cfsetospeed(&portset, B9600); /* speed */
+        //cfsetospeed(&portset, B115200); /* speed */
+        //cfsetospeed(&portset, B19200); /* speed */
+        tcsetattr(fd, TCSANOW, &portset);
+        close(fd);
+        return(0);
+}