Hello Sugang,
Can you try the pins PA23(RX pin) and PA22(TX pin)?
PA04 and PA05 share the same UART with the shell.
I hope this helps.
Best,
Cenk
On 08.12.2015 17:29, Sugang Li wrote:
Hi Oleg,
Sorry that I come back to this question so late. After a few trials,
I still have the following concerns:
1. I am using SAM R21 board for the border_router examples, and I can
shell into the RIOT from both USB debug port and UART port (PIN: PA04
and PA05). When I connect two cable at the same time, and use tunslip
tool to setup a IPV6 slip interface over UART port, the shell (USB
debug port )dose not reply to any command, such as ps and ifconfig, if
I unplug the UART port, the shell works fine. Is this the multiplexing
concerns that you mentioned? If yes, how can I add a second
USB-to-UART adapter since there is only one interface on board(PA04
and PA05)?
2. If I only use one port (either USB or UART) for slip, from Linux
side, I got no ping6 reponse from the address of the RIOT node. I
followed the steps in gnrc_border_router example to configure the
RIOT node, and made sure the state maintained.
Thanks,
Sugang
Hi!
On Mon, Nov 23, 2015 at 11:25:19PM -0500, Sugang Li wrote:
> 1. Is there a way I can send packet from Ubuntu to RIOT via USB port? Any
> related library and example will be appreciated.
In general, yes, you can use SLIP [1]. In order to do so, please take
a look
at the border router example [2]. In particular, you need to copy the
slip_params.h file into your application folder and add something like
this to
your Makefile:
ifeq (,$(SLIP_UART))
# set default (first available UART)
SLIP_UART="UART_DEV(0)"
endif
ifeq (,$(SLIP_BAUDRATE))
# set default
SLIP_BAUDRATE=115200
endif
GNRC_NETIF_NUMOF := 2
INCLUDES += -I$(CURDIR)
CFLAGS += -DSLIP_UART=$(SLIP_UART)
CFLAGS += -DSLIP_BAUDRATE=$(SLIP_BAUDRATE)
USEMODULE += gnrc_slip
This will add a SLIP interface that uses the primary UART as a serial
port.
However, you might run into problems since this UART is also used for the
shell and I don't know how well multiplexing works on both ends. A common
solution that is, for example, used for our the before mentioned
border router
is to add a second USB-to-UART by using an external adapter that can
be found
for a low price on ebay [3].
> 2. For receiving a packet at Ubuntu, currently I understand I can write a
> script to extract the information in the debug message. Is there a more
> standard way to do that?
Not that I'm aware of.
> Also I have some issue with pyterm the node. After successfully "make flash"
>
> I can not access the node via pyterm:
> sudo pyterm -p "/dev/ttyACM0"
<snip>
> Any idea? The debug light flash as the same frequency as the warning
> information.
That seems strange to me. Is there anything else that tries to access
the ACM
device? Maybe some Ubuntu magic? Maybe some of the other Ubuntu (derivate)
users here can help (Hauke, Martine...)?
Cheers,
Oleg
[1] https://tools.ietf.org/html/rfc1055
[2]
https://github.com/RIOT-OS/RIOT/tree/master/examples/gnrc_border_router <https://github.com/RIOT-OS/RIOT/tree/master/examples/gnrc_border_router>
[3]
http://www.ebay.com/itm/6Pin-USB-2-0-to-TTL-UART-Module-Serial-Converter-CP2102-STC-Replace-Ft232-Module-
--
*/WINLAB, Department of Electrical and Computer Engineering/*
*/Rutgers,the State University of New Jersey
/*
_______________________________________________
devel mailing list
[email protected]
https://lists.riot-os.org/mailman/listinfo/devel
_______________________________________________
devel mailing list
[email protected]
https://lists.riot-os.org/mailman/listinfo/devel
