On 08/07/2014 08:31 AM, Christian Aurich wrote:> Am 06.08.2014 um 23:00 schrieb Jens Steinhauser: >> Hi, >> >> You can write a protocol decoder that stacks on top of the existing SPI >> decoder and dissects the commands to the ethernet controller. Protocol >> decoders are written in Python, take the nrf24 decoder [1] as an example, >> the working of your ethernet controller will probably be very similar (some >> setup commands, write your own device's address into the chip, write >> transmission payload, poll for incoming packets, read received payload). >> >> In your decoder, use the OUTPUT_BINARY decoder output [2] to output the >> ethernet packets as PCAP when you encounter the read/write payload commands. >> You should then be able to use sigrok-cli to save the PCAP file like this >> (assuming your decoder is called 'enc28j60'): >> >> $ sigrok-cli <other options> -P spi,enc28j60 --protocol-decoder-binary >> enc28j60 > capture.pcap >> >> Or, use one of the other methods described at [3] to do a live capture by >> piping the output of sigrok-cli directly into wireshark. > > > Alright. Does that means that I have to decide if I want to see the complete > SPI traffic or to extract the Ethernet Packets to wireshark Or is it possible > to have two output streams like that?: > - one OUTPUT_BINARY > - one OUTPUT_ANN > Whenever a ethernet frame comes in I would put this into the binary stream, > everything else and a reference to the output stream would go into the > annotated output?
A decoder can have multiple outputs, so you can generate annotation output for all commands, and binary output only for the ethernet frames. That way you could use both sigrok-cli/PulseView to debug your SPI communication and Wireshark for the ethernet traffic. MfG, Jens ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
