Re: [Ftdi-usb-sio-devel] Raspberry Pi FDTI Driver issue
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Re: [Ftdi-usb-sio-devel] Raspberry Pi FDTI Driver issue
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From: Bill R. <bil...@gm...> - 2015-04-10 00:52:21
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Nope - that is pretty strange. Can you strace your program on a Pi? We can start by looking at what the system calls are returning. Alternatively you can load the driver in debug mode and a LOT more detail will be dumped in the buffer dmesg uses. But ideally start with strace to at least make sure it's the kernel sending you that data. On Fri, Apr 10, 2015 at 2:22 AM, Brett Whittacre <wh...@ec...> wrote: > Here is the Dmseg information about it. I looks to be the right driver to > me. Any other ideas of what it might be? > > [ 3.822917] usbserial: USB Serial support registered for generic > [ 3.842095] usbcore: registered new interface driver ftdi_sio > [ 3.849420] usbserial: USB Serial support registered for FTDI USB Serial > Device > [ 3.855792] ftdi_sio 1-1.2:1.0: FTDI USB Serial Device converter detected > [ 3.862030] usb 1-1.2: Detected FT232RL > [ 3.868149] usb 1-1.2: FTDI USB Serial Device converter now attached to > ttyUSB0 > [ 5.496995] random: nonblocking pool is initialized > > Kind Regards, > > *Brett Whittacre* > Vice President > wh...@ec... > *ec2 Software Solutions* > 3035 E. Patrick > Ste. 1 > Las Vegas, Nevada, 89120 > *P*: 1.866.791.3673 ext 200 | *F:* 1.702.947.7357 > <http://www.ec2software.com>www.ec2software.com > <http://www.ec2software.com> *Follow the rules.* * Exceed the standard**.* > > > ----- On Apr 8, 2015, at 5:08 PM, Bill Ryder <bil...@gm...> > wrote: > > At a guess the Pi isn't loading the right driver. > > Do you have the output from dmesg when the FTDI is plugged in? > > It should say something about a ftdi_sio device being attached. > > > > On Thu, Apr 9, 2015 at 9:40 AM, Brett Whittacre <wh...@ec...> > wrote: > >> I am having a very strange issue with serial communication through a fdti >> FT232 device. I have created a serial program that communicated with a >> device. It is set to blocking mode. When I run the program on a PC, it >> works just fine. However, when I run the same program on a Raspberry pi 2, >> it always returns at least one character, even though there is nothing on >> the line at that time. The code below works on Ubuntu 14.04 with no >> issues. I get full blocking using either a read of select call. >> >> I am just wondering if I am doing something wrong on the PI.... >> >> Here is how I am connecting to the port.' >> >> >> fd=open(sDev.c_str(), O_RDWR | O_NOCTTY ); >> >> >> struct termios options; >> >> tcgetattr(fd, &options); >> >> >> cfsetispeed(&options, B115200); >> >> cfsetospeed(&options, B115200); >> >> options.c_cflag |= (CLOCAL | CREAD ); >> >> options.c_cflag &= ~CSTOPB; //Set one stop bit >> >> options.c_cflag &= ~CRTSCTS; // >> >> options.c_cflag &= ~CSIZE; //Mask the character size bits >> >> options.c_cflag |= (ICANON); >> >> options.c_cflag &= ~(IXON| IXOFF |IXANY); //No software flow control >> >> options.c_cc[VTIME]=0; >> >> options.c_cc[VMIN]=1; >> >> >> tcsetattr(fd, TCSANOW, &options); >> >> int flags; >> >> //clear DTR and RTS >> >> flags &= ~(TIOCM_DTR | TIOCM_RTS); >> >> ioctl(fd, TIOCMSET, &flags); >> >> usleep(200); >> >> >> //SET DTR >> >> flags |= TIOCM_DTR; >> >> ioctl(fd, TIOCMSET, &flags); >> >> usleep(200); >> >> >> //clear DTR >> >> flags &= ~(TIOCM_DTR); >> >> ioctl(fd, TIOCMSET, &flags); >> >> usleep(200); >> >> >> >> >> >> >> Kind Regards, >> >> *Brett Whittacre* >> Vice President >> wh...@ec... >> *ec2 Software Solutions* >> 3035 E. Patrick >> Ste. 1 >> Las Vegas, Nevada, 89120 >> *P*: 1.866.791.3673 ext 200 | *F:* 1.702.947.7357 >> <http://www.ec2software.com/>www.ec2software.com >> <http://www.ec2software.com/>*Follow the rules.* * Exceed the standard* >> *.* >> >> >> Kind Regards, >> >> *Brett Whittacre* >> Vice President >> wh...@ec... >> *ec2 Software Solutions* >> 3035 E. Patrick >> Ste. 1 >> Las Vegas, Nevada, 89120 >> *P*: 1.866.791.3673 ext 200 | *F:* 1.702.947.7357 >> <http://www.ec2software.com>www.ec2software.com >> <http://www.ec2software.com> *Follow the rules.* * Exceed the standard* >> *.* >> >> >> >> ------------------------------------------------------------------------------ >> BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT >> Develop your own process in accordance with the BPMN 2 standard >> Learn Process modeling best practices with Bonita BPM through live >> exercises >> http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- >> event?utm_ >> source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF >> _______________________________________________ >> Ftdi-usb-sio-devel mailing list >> Ftd...@li... >> https://lists.sourceforge.net/lists/listinfo/ftdi-usb-sio-devel >> >> > |
