Set Cellular Access Point Name (APN)

[brotherdust]

@bbel91 You'll need to set up a development environment. See https://github.com/pycom/pycom-micropython-sigfox#the-esp32-version for instructions. Follow them carefully! When are you able to compile and flash the firmware from the unmodified source, you'll be ready for modifying the code to enable GSM_DEBUG and LTE roaming features (if that's what you want to do). I STRONGLY suggest getting comfortable with Git before you start modifying the source code. I personally use a combination of Tower and Git CLI commands.

It's possible to directly access the Sequans modem over UART if you have the expansion board; once you have that setup, you can type AT commands directly to the modem and see what works. See https://forum.pycom.io/topic/2496/gpy-readiness/20 for more info (and a great face-palm moment by yours truly when he forgets to swap the UART pins).

[brotherdust]

@rskoniec said in Set Cellular Access Point Name (APN):

@michaelhobo I hope everything is OK with your board, because using LoRa/Sigfox/LTE without connecting the antenna is not recommended.

My understanding is that, with no antenna attached, it could fry the LNA on the modem. It's expecting a particular impedance on the ANT connector. I really hope you didn't fry it. That would be sad and irritating. =( I've fried a REALLY expensive GPS chip this way (ublox LEA-6T); now it's just a paperweight.

[bbel91]

@brotherdust Thanks a lot for your help.
As I am on Windows10, I looked for a corresponding environment (msys2).
I could then follow your procedure but it blocks at "cd mpy-cross ..." because the directory does not exist. Do you have an idea of what it can be?

[livius]

@bbel91 said in Set Cellular Access Point Name (APN):

mpy-cross

you have it in the pycom-micropython-sigfox/mpy-cross repo
https://github.com/pycom/pycom-micropython-sigfox/tree/master/mpy-cross

[bbel91]

@livius Thanks for your answer.
Yes, of course, I've forgot the essential...
Now that all seems ok and all the repository installed I get this issue when I "make" in mpy-cros :

LINK mpy-cross
build/py/modbuiltins.o:modbuiltins.c:(.rdata$mp_module_builtins_globals_table+0x294): référence indéfinie vers « mp_type_TimeoutError »
collect2: erreur: ld a retourné 1 code d'état d'exécution
make: *** [../py/mkrules.mk:133: mpy-cross] Error 1

Do you know where it can come from ?

[rskoniec]

@brotherdust I would suspect this also.
@michaelhobo There is a note (below) on the Fipy product description

[michaelhobo]

@rskoniec @brotherdust I got my LTE antenna and it's working! At least, I get an IP - I haven't looked at LTE performance, so it's still possible I may have damaged something. I'll make sure to use my backup GPy for any RF-critical benchmarking. Thanks @brotherdust for helping me get started!

[brotherdust]

@michaelhobo you’re welcome and good luck! I fried my FiPy a couple of days ago, so I won’t be much help for now. I’m actually considering going with a different ESP32 board. I’m getting pretty tired of Pycom’s intransigence around releasing actual schematics. If they would, I might have enough info to fix the board, but as it stands, not gonna happen. sigh

[Sat]

@benstr said in Set Cellular Access Point Name (APN):

if either have NB

Hi Ben, Trying to connect to Telstra's CAT-M1 and NB networks. No luck with that. Could you help? I am in a lab environment in band 28.

[camdenkrupala]

@jmarcelino Is there an update on this functionality being added? Thanks!

[jmarcelino]

@camdenkrupala
You can already set an APN manually by doing

lte.send_at_cmd('AT+CEREG=2')
time.sleep(2)
lte.send_at_cmd('AT+CFUN=1')
time.sleep(1)
lte.send_at_cmd('AT+CGDCONT=1,"IP","YOUR_APN_HERE"')
time.sleep(2)

while lte.isattached() == False:
    time.sleep(1)

lte.connect()

while not lte.isconnected():
    time.sleep(1)

print("connected")