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makerdiary / nrf52840-mdk

An Open-Source, Micro Development Kit for IoT Applications using the nRF52840 SoC
https://wiki.makerdiary.com/nrf52840-mdk/
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Basic UART Communication not working on nrf52840-mdk #46

Closed purvisb closed 3 years ago

purvisb commented 3 years ago

I cannot interface with the nrf52840-mdk via wpantund or CLI using openthread firmware.

I was following these instructions originally with no luck. I went to the openthread github and asked for help, but still no luck. Please view that incident to see what troubleshoots I've already done.

I am able to open a CLI with the nrf52840-mdk using this firmware. But I can't open a CLI while using firmware I create with the make file. How was the firmware I linked to made? Are there some parameters I should be providing?

purvisb commented 3 years ago

I resolved this issue by adding the parameter USB=1 and using /dev/ttyACM1 instead of /dev/ttyACM0. I would suggest adding this information to your guide.

songzh96 commented 3 years ago

Hi @purvisb

Hardware:PI 3B I have the same problem as you, What is the compilation command you used？ I am using make -f examples/Makefile-nrf52840 USB=1 

sudo /usr/local/sbin/wpantund -o Config:NCP:SocketPath /dev/ttyACM1 \
        -o Config:TUN:InterfaceName utun7 \
        -o Daemon:SyslogMask " -info"

this is my log output

wpantund[26321]: Starting wpantund 0.07.01 (Feb 11 2021 20:08:31) . . .
wpantund[26321]:        SOURCE_VERSION = 0.07.01
wpantund[26321]:        BUILD_VERSION = 0.07.01-2-g6993264
wpantund[26321]: Reading configuration from "/etc/wpantund.conf" . . .
wpantund[26321]: Configuration file "/etc/wpantund.conf" read.
wpantund[26321]: set-config-param: "Config:NCP:SocketPath" = "/dev/ttyACM1"
wpantund[26321]: set-config-param: "Config:TUN:InterfaceName" = "utun7"
wpantund[26321]: set-config-param: "Daemon:SyslogMask" = " -info"
wpantund[26321]: Ready. Using DBUS bus ":1.9674"
wpantund[26321]: Running as root without dropping privileges!
wpantund[26321]: SpinelNCPInstance-Protothreads.cpp:436: Requirement Failed (IS_EVENT_FROM_NCP(event) && GetInstance(this)->mInboundHeader == mLastHeader)
wpantund[26321]: Resetting and trying again... (retry 1)
wpantund[26321]: SpinelNCPInstance-Protothreads.cpp:426: Requirement Failed (event == EVENT_NCP_RESET)
wpantund[26321]: Resetting and trying again... (retry 2)
wpantund[26321]: SpinelNCPInstance-Protothreads.cpp:426: Requirement Failed (event == EVENT_NCP_RESET)
wpantund[26321]: Resetting and trying again... (retry 3)
wpantund[26321]: SpinelNCPInstance-Protothreads.cpp:426: Requirement Failed (event == EVENT_NCP_RESET)
wpantund[26321]: The NCP is misbehaving: Repeatedly unable to initialize NCP. Entering fault state.
wpantund[26321]: State change: "uninitialized" -> "uninitialized:fault"

can you give me some advice? Thanks

purvisb commented 3 years ago

@songzh96 That compilation command is the exact same as the one I used. Are you making sure to use the right symlink in /dev? There should be two (ttyACM0 & ttyACM1) in /dev. One is daplink, the other one is the NCP.

purvisb commented 3 years ago

@songzh96 Oh I forgot that I already put that detail in my last comment that closed this ticket. You probably read that.

To make sure your using the right symlink atleast, you could use a udev rule. Create file: /etc/udev/rules.d/99-usb-serial.rules. And copy this text into it: ACTION=="add", SUBSYSTEM=="tty", ATTRS{idVendor}=="1915", ATTRS{idProduct}=="cafe", MODE:="0666", SYMLINK+="thr%n"

Then restart. After that, when you plug in the nrf52 chip, a thr# symlink should populate in /dev. Where # is a integer.