HP Forum Archive 20

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HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Message #1 Posted by Bart (UK) on 21 Aug 2011, 11:39 a.m. See addition to article 1060.

Re: HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Message #2 Posted by Walter B on 21 Aug 2011, 11:48 a.m., in response to message #1 by Bart (UK) Congratulations :-)

Re: HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Message #3 Posted by Hubert Weikert on 21 Aug 2011, 1:49 p.m., in response to message #1 by Bart (UK) Good news, thank you for! Still trying to get SAM-BA working with the WP34S on Linux. Unfortunately Atmel supports on Linux only the CDC version. Serial SAM-BA requires some specialities not supported by the CDC variant, like sending some kind of sync characters for auto-baud initialisation, and probably others. I use a FTDI chip based USB-to-serial converter. Promising is the open source Sam-I-Am tool, but designed also only for CDC. Initial sync and auto-baud work now, but other commands except SAM-BA version query fail. A further, less comfortable alternative for flashing may be sam7utils but up to now I get errors when the program tries to open the usb-serial port, with invalid ioctl() calls. Hubert

Re: HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Message #4 Posted by Marcus von Cube, Germany on 21 Aug 2011, 4:07 p.m., in response to message #3 by Hubert Weikert What is the _cdc version? I know it exists but have no idea what it is for.

Re: HP-30b successfully re-flashed to a WP-34s in Vista with SAM-BA 2.10 & USB-RS232 converter Message #5 Posted by Hubert Weikert on 22 Aug 2011, 5:47 a.m., in response to message #4 by Marcus von Cube, Germany As far as I get it, CDC is a serial port emulation 'on the far end', for two systems interconnected by USB. The embedded system uses then a own USB driver and hardware on chip, and no serial RxD and TxD pins anymore. CDC stands for "Communication Device Class". Some explanation can be found in this Atmel App-Note. Essentially, as the two system are now interconnected by USB, there seems to be no need anymore to be concerned about restrictions as given by a hardware serial connection. CDC supports also multiple interfaces, e.g. mass storage and networking. Hubert

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