Make obreader setup the tty itself

tools/reader/obreader.c

@@ -18,6 +18,7 @@
 #include <string.h>
 #include <pwd.h>
 #include <stdlib.h>
+#include <termios.h>
 
 #define INTERVAL 1
 
@@ -72,6 +73,74 @@ void setnonblocking(int fd) {
 	return;
 }
 
+void setupserial(int fd){
+    struct termios  config;
+
+    if(!isatty(fd)) {
+		fprintf(stderr,"fd %d is not a tty?",fd);
+        exit(EXIT_FAILURE);
+    };
+    if(tcgetattr(fd, &config) < 0) {
+		perror("tcgetattr");
+		exit(EXIT_FAILURE);
+	};
+    //
+    // Input flags - Turn off input processing
+    // convert break to null byte, no CR to NL translation,
+    // no NL to CR translation, don't mark parity errors or breaks
+    // no input parity check, don't strip high bit off,
+    // no XON/XOFF software flow control
+    //
+    config.c_iflag &= ~(IGNBRK | BRKINT | ICRNL |
+                                INLCR | PARMRK | INPCK | ISTRIP | IXON);
+    //
+    // Output flags - Turn off output processing
+    // no CR to NL translation, no NL to CR-NL translation,
+    // no NL to CR translation, no column 0 CR suppression,
+    // no Ctrl-D suppression, no fill characters, no case mapping,
+    // no local output processing
+    //
+    // config.c_oflag &= ~(OCRNL | ONLCR | ONLRET |
+    //                     ONOCR | ONOEOT| OFILL | OLCUC | OPOST);
+    config.c_oflag = 0;
+    //
+    // No line processing:
+    // echo off, echo newline off, canonical mode off, 
+    // extended input processing off, signal chars off
+    //
+    config.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
+    //
+    // Turn off character processing
+    // clear current char size mask, no parity checking,
+    // no output processing, force 8 bit input
+    //
+    config.c_cflag &= ~(CSIZE | PARENB);
+    config.c_cflag |= CS8;
+    //
+    // One input byte is enough to return from read()
+    // Inter-character timer off
+    //
+    config.c_cc[VMIN]  = 1;
+    config.c_cc[VTIME] = 0;
+    //
+    // Communication speed (simple version, using the predefined
+    // constants)
+    //
+    /*
+    if(cfsetispeed(&config, B9600) < 0 || cfsetospeed(&config, B9600) < 0) {
+		perror("cfset[io]speed");
+		exit(EXIT_FAILURE);
+    }
+    */
+    //
+    // Finally, apply the configuration
+    //
+    if(tcsetattr(fd, TCSAFLUSH, &config) < 0) {
+		perror("tcsetattr");
+		exit(EXIT_FAILURE);
+	};
+};
+
 /* Reference is https://r0ket.badge.events.ccc.de/tracking:reader */
 void pkt_cleanup(int idx){
     static u_int32_t ctr;
@@ -285,7 +354,8 @@ and sends them off via TCP/UDP to a central host\n\n\
 		perror("open(device)");
         exit(EXIT_FAILURE);
     };
-	setnonblocking(devfd);
+    setupserial(devfd);
+    setnonblocking(devfd);
     setup_r0ket(devfd);
 
 	/* Open & prep outout device */