I was under the impression that the device's name was /dev/ttyS0.
Daniel J. Allred Software Applications Catalog DSP / Emerging End Equipment ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Subhash Sent: Thursday, March 22, 2007 9:53 AM To: Peter Wippich Cc: [email protected] Subject: Re: UART0 help Hi Peter, Thanks for ur reply. Here some piece of code that i developed to make use of UART0, still i am facing problem in using uart at Baudrate 115200.Here i am attaching piece of code for ur reference. PLz review code and let me know any mistake. int OpenSerialPort ( PortNumber_t pnPortNumber, BaudRate_t bdBaudRate ) { int ret; int rReturnVal = 0; char serialDev[30] ; //here pnPortNumber is 1 means i try to open /dev/tts/0 sprintf (serialDev,"/dev/tts/%d", pnPortNumber - 1 ); if ( (fd = open(serialDev, O_RDWR)) < 0) { perror ("open failed"); fprintf(stderr, "Opening of dev %s failed.\n", serialDev); rReturnVal = SERIAL_PORT_OPEN_FAILED; return (rReturnVal); } tcflush(fd, TCIFLUSH); ret = tcgetattr(fd, &save); if ( ret == -1) { perror("tcgetattr"); rReturnVal = SERIAL_PORT_OPEN_FAILED; return (rReturnVal); } Initialize_serial(fd, bdBaudRate); } int Initialize_serial(int fd, BaudRate_t bdBaudRate) { struct termios tmp; speed_t speed = B115200; if ( tcgetattr(fd, &tmp) == -1) { fprintf(stderr, "Getting terminal default settings failed !\n"); return (-1); } switch (bdBaudRate) { case 9600: speed = B9600; break; case 57600: speed = B57600; break; case 115200: speed = B115200; break; case 921600: speed = B921600; break; default: speed = B115200; break; } tmp.c_iflag &= ~(IGNBRK | IXANY | IUCLC | INLCR | ICRNL | ISTRIP \ | IXON | BRKINT);^M tmp.c_oflag &= ~OPOST; tmp.c_cflag &= ~CSIZE; tmp.c_cflag |= CREAD; tmp.c_cflag |= CS8; tmp.c_lflag &= ~ (ICANON |ISIG | ECHO | IEXTEN); tmp.c_cc[VMIN] = 1; tmp.c_cc[VTIME] = 0; cfsetispeed(&tmp, speed); cfsetospeed(&tmp, speed); if (tcsetattr(fd, TCSANOW, &tmp)!= 0) { fprintf(stderr, "Setting terminal properties failed !\n"); } return 0; } and i am reading uart data using read sys call( read(fd, buffer, (size_t) 1);) and writing data using write sys call write (fd, (char *)ucpDataBuffer, txSize);. During read operation I am not receiving proper data. Is there any UART settings need to be changed Please help me on this. Regards, Subhash B Karigar ----- Original Message ----- From: "Peter Wippich" <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > To: "Subhash" <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > Cc: <[email protected] <mailto:[email protected]> > Sent: Thursday, March 22, 2007 8:07 PM Subject: Re: UART0 help > > man 2 open > man 2 read > man 2 write > man termios > > ........... > > Can't resist, > > Peter > > On Thu, 22 Mar 2007, Subhash wrote: > > > Hi All, > > > > I want to make use of UART0 in my application, is there a source code is available already? And also I want to know what is the maximum baudrate this uart supports... can we go higher baudrate like 921kbps?. PLease can any one help me on this... > > > > Regards, > > > > Subhash B Karigar > > > > > | Peter Wippich Voice: +49 30 46776411 | > | G&W Instruments GmbH fax: +49 30 46776419 | > | Gustav-Meyer-Allee 25, Geb. 12 Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> | > | D-13355 Berlin / Germany | > > >
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