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serial_settings 2007/03/04 19:36 serial_settings 2007/03/18 22:34 current
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===== Quick and dirty ===== ===== Quick and dirty =====
-Write your own program, which makes all the settings for you. Based on [[http://www.sunspot.co.uk/Projects/SWEEX/files/serialports/rs232_c_progs/rs232io_ttyS1_96.c|sunspots work]] I use the following c programm:  +Write your own program, which makes all the settings for you. Based on [[http://www.sunspot.co.uk/Projects/SWEEX/files/serialports/rs232_c_progs/rs232io_ttyS1_96.c|sunspots work]] I use [[http://schimmelnetz.de/projekte/eddi/files/set_ttyS1_2400_8N1.c|this c programm]]. Change the baudrate and the device name in the sources to your needs or implement baudrate and device name as command line arguments.
-<code> +
-#include <stdio.h> +
-#include <errno.h> +
-#include <sys/types.h> +
-#include <sys/stat.h> +
-#include <fcntl.h> +
-#include <termios.h> +
-#include <stdlib.h> +
-#include <string.h> +
- +
-#define BAUDRATE        B2400 +
- +
-int main(int argc,char* argv[]) { +
-  int fd; +
-  struct termios newtio; +
-  char *device; +
- +
-  device="/dev/ttyS1"; +
-  fd = open(device,O_RDWR); +
-  if(fd < 0) { +
-    fprintf(stderr,"*** open %s: %s\n",device,strerror(errno)); +
-    exit(-1); +
-  } +
- +
-  bzero(&newtio,sizeof(newtio)); +
- +
-  cfsetospeed(&newtio,BAUDRATE); +
- +
-  newtio.c_cflag |= CS8; +
-  newtio.c_cflag |= CLOCAL; +
-  newtio.c_cflag |= CREAD; +
- +
-  newtio.c_cflag &= ~CRTSCTS;    /* NO output hardware flow control */ +
-  newtio.c_cflag &= ~PARENB;    /* no parity */ +
-  newtio.c_cflag &= ~CSTOPB;    /* no stopbit */ +
- +
-  newtio.c_iflag = IGNPAR;      /* ignore input parity */ +
-  newtio.c_lflag = 0;            /* turn all off (non-canonocal, non-echo) */ +
-  newtio.c_oflag = 0;            /* turn all off */ +
-  newtio.c_cc[VTIME] = 20;      /*  timeout in 1/10 sec */ +
-  newtio.c_cc[VMIN] = 0;        /* minimum characters to read */ +
- +
-  tcflush(fd,TCIFLUSH); +
-  tcsetattr(fd,TCSANOW,&newtio); +
-} +
-</code> +
- +
-TODO: Baudrate as command line argument +
- +
-Binary version available on request.+
Compile it using the [[crosscompiler]], strip it and copy it into ''trunk/openwrt/target/linux/image/adm5120/base-files/sbin/'' before you next firmware build. After you run it, your /dev/ttyS1 runs fine with 8N1, no hardware handshaking and the baudrate you entered in the sources. Compile it using the [[crosscompiler]], strip it and copy it into ''trunk/openwrt/target/linux/image/adm5120/base-files/sbin/'' before you next firmware build. After you run it, your /dev/ttyS1 runs fine with 8N1, no hardware handshaking and the baudrate you entered in the sources.