Hello Gunnar, On Wed, 29 Sep 2010 11:12:59 +0200 Gunnar Henne <[email protected]> wrote:
> Hello William and other helpful posters, > > thank you for clarifying this. It matches the experiences I could make > after the first posting: > I am using Ubuntu 10.04 and sometimes it works using /dev/ttyACM0 and > sometimes it doesnt. > If I want reliable serial communication I will have to attach a separate > USB-serial adapter. > A seperate USB-serial adapter is for now the best solution. From my experiences the device is usable after all endpoints have been enumerated. From staring at my logs I can see the following: Sep 28 08:51:49 joeniks64 kernel: [314603.970550] usb 1-1.1: new full speed USB device using ehci_hcd and address 18 Sep 28 08:51:49 joeniks64 kernel: [314604.104357] usb 1-1.1: configuration #1 chosen from 1 choice Sep 28 08:51:49 joeniks64 kernel: [314604.110191] cdc_acm 1-1.1:1.0: No union descriptor, testing for castrated device Sep 28 08:51:49 joeniks64 kernel: [314604.110237] cdc_acm 1-1.1:1.0: ttyACM0: USB ACM device /dev/ttyACM0 is available at this point but not approachable yet. I was too soon opening the serial port, then I get this warning: Sep 28 08:51:59 joeniks64 kernel: [314613.890162] tty_port_close_start: tty->count = 1 port count = 0. Now the debug interface is becoming available: Sep 28 08:51:59 joeniks64 kernel: [314614.160181] generic-usb 0003:0451:F432.000A: timeout initializing reports Sep 28 08:51:59 joeniks64 kernel: [314614.160428] generic-usb 0003:0451:F432.000A: hiddev96,hidraw2: USB HID v1.01 Device [Texas Instruments Texas Instruments MSP-FET430UIF] on usb-0000:00:02.1-1.1/input1 After this point the serial interface is working for me until I close the port, then I have to replug. The entire operation takes about 10 seconds. Regards, Hans > With kind regards, > > Gunnar > > Am 29.09.2010 10:37, schrieb William "Chops" Westfield: > > > > On the target MSP430 itself, the "serial port" is implemented as a > > timer-based software-generated "standard" async serial signal (at > > whatever voltage the board is running at.) > > [...] > > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Mspgcc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/mspgcc-users ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Mspgcc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mspgcc-users
