GPy

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  gpy in deep sleep
  gpy deepsleep • • kjm

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  Can't figure this gpy board out. If I run a simple 2 line program; import machine machine.deeplseep() the board current drops to virtually nothing. But if I do anything else in the code with lte modem then the current in deepsleep can be anywhere between 50 & 150mA. I've tried everything, disconnect, dettach, at+cfun=0, deinit, time.sleep (to give it time to power down) nothing seems to work. What good is a card that only deepsleeps properly if you don't do anything else with it?
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  Cannot init 2 UARTs on GPy
  gpy uart • • andrejpekarcik

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  @andrejpekarcik UART0 is used for the REPL over USB. The regular speed is 115200. SO if you want to use that, you have to deinit REPL on UART, using uos.dupterm(None), and use Telnet for the REPL.
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  Is Gpy AT&T PTCRB certified?
  gpy at&t ptcrb • • pmjackson

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  upload problem
  upload problem • • kjm

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  Weird issue when pinging an external server
  gpy nb-iot ping • • shedaim

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  @elizar said in Weird issue when pinging an external server: @shedaim Ping'ing takes time. Maybe the successful reply to the second ping is in fact the answer to the first ping? Using the newly added "delay" option should have fixed that, so I don't believe that's what's happening. This is what I managed to find out untill now: Trying a single ping message: Ping request UE --> Server Success Ping reply Server --> EPG Success Ping reply EPG --> MME Success Ping reply MME --> eNodeB Success Ping reply eNodeB --> UE Unknown (Doesn't show in Atom, but MME states that message has been sent) Trying two pings in rapid succession: Ping request UE --> Server Success Ping reply Server --> EPG Success Ping reply EPG --> MME Success Ping reply MME --> eNodeB Success ping reply eNodeB --> UE Unknown (Doesn't show in Atom, but MME states that message has been sent) Ping request UE --> Server Success ping reply Server --> UE Success (Arrives after 150 - 500 ms) Pinging from server to UE is successful continuously. eDRX is in state "NOT_CONFIGURED" - same as network. Tried to disable sleep of the modem using AT!="EE::disable" Additional information for the Pros: First Ping message is sent over S1AP/NAS-EPS in the initial message to the MME, which contains a Control Plane Service Request. Second ping message is sent over the same interface as an UplinkNasTransport message. Wireshark of MME messages - Download
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  LTE_WAKE and waking from network activity like SMS
  gpy gpio lte m1 wake sms • • psychogenic

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  P6 which is the same as LTE_WAKE is among those which can wake the device from deepsleep. The problem (at least for me) is that that pin is constantly high and doesn't change when e.g. the device receives an SMS. It would be great if anyone has any information about what conditions cause that pin to change value. I'm a bit frustrated by the lack of implementation since the feature is clearly alluded to in the documentation but is not ready to be used. It would seem like a pretty useful feature for many applications so it's a bit misleading for the device to be released and then the official word to be "we'll get to it..." Likewise the PSM and eDRX modes don't seem have any good documentation but are some of the main reasons for wanting to use a CatM1 device instead of say a SIM808.
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  LTE modem stops to reply
  gpy nbiot • • abrilevskiy

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  You may be encountering issue mentioned here: https://github.com/pycom/pycom-micropython-sigfox/issues/225
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  This topic is deleted!
  • shedaim

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  lte.attach() doesn't work, but modem is attached
  gpy nb-iot attach • • shedaim

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  Indeed, that was the issue. With the new Firmware it's working. Thank you.
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  AT Commands
  gpy lte at commands • • panda

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  I know this post is a couple of months old, but I experience the same thing. I have to manually disconnect and reconnect LTE to send AT commands. I'm not sure if it's truly necessary, but I also added a half second sleep after disconnect() before I send the AT command.
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  gpy with v2.1A dev board
  gpy dev board • • kjm

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  @kjm yes, it should work with it. Which part are you having issues with? Can you connect to the board? Which operating system are you using?
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  High current consumption in deep sleep: 80 mA
  gpy deep sleep • • averri

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  I'm having the same problem. When I arrive at home a will insert a SIM card and check if the current consumption decrease. Update: I have insert a SIM card. And make lte.deinit() and de current consumption in deepsleep drop to 0.022 mA.
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  MQTT with Certificate not working
  mqtt tls • • markweber

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  Saving Power: Approaches, results and questions
  gpy power sleep power saving lte m1 • • psychogenic

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  To anyone using the Bell Canada LTE Cat M1 network: just got word from them and it seems that at this point there is PSM support but: "eDRX feature is under consideration for future availability but there is no announced plan yet". I'll be playing with the +CPSMS AT command to see what's possible.
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  GPy NB-IoT modem FW release?
  firmware gpy nb-iot • • GeorgeEisin

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  @eric-waai Yes, I know this promise. I already registered, but it' s not there yet. Sequans may not have provided the firmware yet, and Pycom did not start with the device replacement yet.
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  LTE M1 Melbourne - May help others
  lte m1 melbourne • • micksta

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  @micksta 15 Oct 2018 - Ran this code on Telstra SIM (Adelaide) using AT+CGDCONT=1,"IP","telstra.internet
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  LTE Available Towers
  gpy lte gps • • panda

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  @panda With the command: lte.send_at_command('AT!="setDbgPerm full"') There is also : lte.send_at_command('AT!="Help"') which gives you the command list, and lte.send_at_command('AT!="help <command>"') e.g. lte.send_at_command('AT!="help help"') telling you, how to use help to get the list section by section. The list is quite long.
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  Troubleshooting lte connections
  gpy lte nb-iot • • shedaim

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  @shedaim There is a problem in the lte.attach() API concerning parsing the response from the network. @xykon adresses this in a trial firmware build at http://beta.pycom.io/nbiot-xykon/ Please download and install that (install from file). It may fix you problem. See also this thread around https://forum.pycom.io/topic/3549/important-update-regarding-lte-modem-updates/83
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  GPy: NB IoT control and user plane optimization
  gpy nbiot • • sothy

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  GPy with Hologram SIM
  cat-m1 gpy lte m1 • • tlanier

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  @panda I added an lte.reset() call at the start and now the program crashes on a blank line the second time it is run. Again it works fine the first time the program is run.