First of all the device works (right now running openwrt 18.06.1)
I failed trying to access serial of NanoBeam M5 300. My serial is a CP2104 and I succeeded doing it in a nexx wt3020 => h ttps://openwrt.org/toh/nexx/wt3020#serial_connection
$ sudo picocom -b 115200 /dev/ttyUSB0
picocom v1.7
port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 115200
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,
and from there Ctrl+A u
and Ctrl+A d
to change baudrate and see if I can read something.
I took this opportunity to contribute to the community providing the top and back of the board
I see that the serial looks very similar to this one (extracted from this article => h ttps://medium.com/openwrt-iot/lede-openwrt-getting-serial-access-427696c0ec99)
But I could not make it work
only RX brings constant data (then noise, right?), so I put add a GND where the previously image says and I get no data
I also don't know what hole gives voltage 3.3 Vdc and what gives ground
Note: I break deliverately that two links because there is a limit of two hyperlinks per post