Anyone tried Laird RM1XX modules ? part 2

End Devices (Nodes) Hardware
1

see part 1

1 Like
3

@BoRRoZ Hi, I was wondering how did you manage to update the module to peripheral mode (18.17.1.0), did you use the jlink?

4

Yes, had some help from a friend who owns a Segger (edu)

5

So it is possible to upgrade it simply with jlink edu? Do I need some extra device?

6

besides a computerā€¦ no, I had only 2 rm186 to flash So I didnā€™t buy one myself ā€¦ yet
here youā€™ll find more info but it was written for the dev kit.

7

where did you pick the u.fl pcb antenna? For some reason they are quite difficult to find

8

eBay

9

Hi everybody,
Well, the week was long, but I finally got openOCD working for my RM186.
For information, nrfjprog neither worked on linux for me, I got a pretty

*** J-Link V6.14a J-Link V6.14a Info ***
The connected J-Link (S/N XXXXXXXXX) has been designed to work with devices made by ST only.
Debugging the selected device nRF51822_xxAA is not supported by this J-Link.

To program and debug the target device, please consider purchasing a full J-Link.
More information: <a>https://www.segger.com/jlink-debug-probes.html</a>
*** J-Link V6.14a J-Link V6.14a Info ***

in the wormOld.tmpā€¦It seems that Segger firmware is not as much open bar anymore ;-)ā€¦
So, lazy as I was to grab a $60 JLink EDU (Iā€™d rather spend this money on belgian beer), I tried to switch to openOCD.
With the help of this tutorial I got to connect to the laird and to read the flash using

flash read_bank 0 bank0.bin 0 262144
flash read_bank 1 bank1.bin 0 262144

So now, I think the equivalent of this worm reading:

set wrmstart=0x3FC00
set wrmlen=1024
echo grab worm data and convert to hex file
nrfjprog --memrd %wrmstart% --n %wrmlen% --w 8 >wormOld.tmp

if for openOCD:

flash read_bank 0 wormOld.tmp 261120 1024

The content of the wormOld.tmp I got is the following (when opening with an hex editor):

00 FF FC FC FF FF FF FF FF FF FF FF 16 00 00 50 FF FF FF FF 00 00 5F FF F8 F8 00 00 00 50 30 00 00 50 FF FF FF FF FF FF FF FF 02 00 00 00 A5 A5 5F FF F8 F8 16 00 00 50 54 00 00 50 FF FF FF FF FF FF FF FF 07 00 02 00 FF FF XX XX XX XX AC XX XX XX XX XX 5F FF F8 F8 30 00 00 50 72 00 00 50 FF FF FF FF FF FF FF FF 04 00 07 00 FF FF XX 00 00 00 5F FF F8 F8 54 00 00 50 90 00 00 50 FF FF FF FF FF FF FF FF 04 00 08 00 FF FF XX XX FF FF 5F FF F8 F8 72 00 00 50 B2 00 00 50 FF FF FF FF FF FF FF FF 06 00 04 00 FF FF C0 EE 40 00 01 01 XX XX 5F FF F8 F8 90 00 00 50 D4 00 00 50 FF FF FF FF FF FF FF FF 06 00 05 00 FF FF 31 XX 30 35 32 30 31 36 5F FF FC FC B2 00 00 50 FF FF FF FF FF FF FF FF FF FF FF FF 06 00 06 00 FF FF 50 XX XX 30 XX XX XX XX FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF .....Only FF

The XX are the values that differ from my first to my second module, so I guess theyā€™re ā€œprivateā€.
Could somebody friendly, that have access to a JLink, compare those values to the ones (s)he got from nrfjprog and confirm (or infirm) that the values I got are the right ones ? Just because Iā€™d prefer to avoid bricking my Laird.
BTW, as far as I could grab informations, this wormy is only for keeping MAC address, but who knowsā€¦
Thanks a lot for you help,

Guillaume

10

Itā€™s the second day Iā€™m working on Lairdā€™s development kit.

Iā€™ve managed to upgrade the firmware, run the ioexpander example, while tempsense does not compile, and cmdloramac returns error 0000001 when I try to join lora.

Has anybody had my same luck?

11

Did you set the join parameters (appEUI, appkey, etc) correctly for example via at+cfgex followed by atz before trying to join ?

12

No, I was not able to find any documentation on any of the programs available on github.

13

The documentation is at https://www.lairdtech.com/products/rm1xx-lora-modules, I suggest reading at least ā€œInterfacing with LoRaWANā€ to understand how the join works but really all of them will eventually be useful.

14

One of the couple of documents I did not readā€¦

15

AppEui = DevEui = 1001
ati 25 gives me C0EE40000101098B
Should I copy this to the local copy of DevEui?

What should I write in the AppKey?

16

AppEUI and AppKey come from the TTN console after you register your application and device

You donā€™t need to make a copy of the DevEUI, the RM186 will use whatā€™s reported by ati 25

17

Done. Error 0000001. What does it means?

18

Can you explain what youā€™re trying to run?

If you could list your commands including setting the appEUI etc it would help

19 
at i 3
10	3	18.4.1.0
atz
at&f 1
FFS Erased, Rebooting...ļæ½
at+dir
00
(no files Xcompile+load ioexpander.rm1xx.sb)
10	0	RM186
00
10	13	A780 BF25 
00
10	0	RM186
00
10	13	A780 BF25 
00
10	0	RM186
00
10	13	A780 BF25 
-- XCompile complete (1.02KB) --

-- Finished downloading file --
at+dir

06	ioexpander
00
ioexpander
Press SW1/Button1 on the DVK to flash the LEDs
exit
01	E007
(ioexpander works ok. tempsens.rm1xx.sb does not compile)
(Xcompile+load cmd.loramac.rm1xx.sb)
10	0	RM186
00
10	13	A780 BF25 
00
-- XCompile complete (19.4KB) --

-- Finished downloading file --

at+dir

06	ioexpander
06	cmd
00
at+cfgex 1010?
27	70B3D57EF00043E6
at+cfgex 1011?
27	07DD000000000001
at+cfgex 1012?
01	0208
at+cfgex 1012 "BFEC856DB6014AC9686B54503ABE2507"
00

(run cmd.loramac.rm1xx.sb)
cmd

OK
join

ERROR 00000001
join lora

ERROR 00000001
volts
Input voltage = 3336mV

OK
check loop

ERROR 00000001
ble_scan

ERROR 00000005
cancel

ERROR 00000001
20

Ok so youā€™re trying to use the ā€˜cmdā€™ sample application.

I think the join command there is lora join ( and lora send YourString to send data )

But why donā€™t you try your own smartbasic script? The cmd app is really an example, not how you usually interface with the module.

21

Oh f#@k! I did it so many timesā€¦

Attempting to join the LoRa network
Tx Done
Successfully joined the LoRa network

THANKS!!!