GPy

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  lte OSError
  gpy oserror • • kjm  

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  Cell TAC
  tac • • kjm  

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  at cmds Vs the alternative
  gpy at commands • • kjm  

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  @kjm That value is #defined in esp32/lte/lteppp.h, and the constant is used e.g. in esp32/mods/modlte.c.
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  Locals Vs Globals
  code • • kjm  

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  long sigh
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  OTA LTE modem update
  • DonovanBlackLab  

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  @DonovanBlackLab The documentation is a bit vague. After a lot of trials, I was able to upgrade firmware from the module's flash over wifi (no UART, no SD). I copied one of the diff file into the /flash over ftp (I used FileZilla GUI Client). And in the micropython REPL execute following code: import sqnsupgrade sqnsupgrade.run('/flash/diff_file') You should copy the diff file based on your current modem firmware version which you can check with, sqnsupgrade.info()
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  Dead modem
  gpy dead lte no attachment • • kjm  

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  @rskoniec Mate I'm paddling hard to keep my head above water with the continual state of pycom/sequans firmware flux without trying to follow up on a single failed piece of hardware. Typical of most hybrids I reckon the RF wafer is probably heaps more fragile than the digital stuff & a glitch down the antenna feedline or on the 5v rail has cooked it. Probably the only disadvantage of having the lte integrated with the smarts on the same board.
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  Is Rollback possible?
  • kjm  

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  Thanks @kjm : A rollback to Atom 1.38.2 solved the issue.
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  lte attachment
  gpy lte attachment • • kjm  

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  @hayesey import network, machine wdt=machine.WDT(timeout 60000) #allow 60s per deepsleep cycle if 'lte' not in globals(): lte=network.lte() #new modem instance if previous is gone cause=machine.reset_cause() #check if previous cycle ended via watchdog if cause==2: lte.send_at_cmd('AT^RESET') #reset the modem if it did
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  Keyboard input
  gpy input keyboard • • kjm  

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  @kjm I've just tested it through the REPL (PuTTY on COM with W10) on my LoPy and everything is OK: >>> os.uname() (sysname='LoPy', nodename='LoPy', release='1.20.0.rc11', version='v1.9.4-0a38f88 on 2019-05-14', machine='LoPy with ESP32', lorawan='1.0.2') >>> >>> v=input('Enter value -=> ') Enter value -=> test msg >>> >>> print(v) test msg >>>
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  SMS abstraction
  gpy sms • • kjm  

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  Nice one Rob, tnx
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  Read input voltage via code?
  • techykermit  

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  @robert-hh Thanks! :)
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  gpy modem upgrade alternative
  gpy modem upgrade • • kjm  

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  @kjm For people using Atom the this is a possible approach. But not all people do, and this approach makes quite a few assumptions, like that the image fits into flash. And there a lot if threads about problems with Atom and syncing. Your approach is an alternative, but people will too have issues with it.
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  Maximun Voltage Input Pin 13-18 (ADC1 input)
  • fruiz1113  

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  @robert-hh Thanks !
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  SMS Messages
  sms • • tlanier  

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  Finally! import time, network lte=network.LTE() def _getlte(): if not lte.isattached(): print('lte attaching '); lte.attach() while 1: if lte.isattached(): print(' OK'); break print('. ', end=''); time.sleep(1) _getlte() print('configuring for sms', end=' '); ans=lte.send_at_cmd('AT+CMGF=1').split('\r\n'); print(ans, end=' ') ans=lte.send_at_cmd('AT+CPMS="SM", "SM", "SM"').split('\r\n'); print(ans); print() print('receiving an sms', end=' '); ans=lte.send_at_cmd('AT+CMGL="all"').split('\r\n'); print(ans); print() print('sending an sms', end=' '); ans=lte.send_at_cmd('AT+SQNSMSSEND="61419123456", "This is the SMS content"').split('\r\n'); print(ans) gives configuring for sms ['', 'OK', ''] ['', '+CPMS: 6,30,6,30,6,30', '', 'OK', ''] receiving an sms ['', '+CMGL: 1,"REC READ","+61419123456",,"19/07/07,16:29:43+40"', 'C', 'Text to gpy test', 'OK', ''] sending an sms ['', '+SQNSMSSEND: ID,14', '', 'OK', ''] hope this saves someone some trial & error time.
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  How to reduce power consumption on GPy?
  power saving help helpneeded • • techykermit  

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  @robert-hh That´s what I assumed, thank you so much!
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  Software reliability
  gpy lte network • • kjm  

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  I think I might have a flash memory problem, something that has haunted me with GPYs from the getgo. If I upload then remove then upload boot.py & main.py several times I seem to get a more stable system. It's like the first write of new software is not enough.
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  Uploading to a remote FTP server (GPy + LTE)
  gpy micropython lte ftp • • apopka422  

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  Unable to Connect LTE
  • pycom_user123  

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  @robert-hh It still doesn't seem to work for me even after setting the DNS servers. Aside from this method is there another way I can verify my connection?
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  FTP connection to Gpy and AWS IoT platform connection
  • Terry666  

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  @robert-hh Sure thanks! I made it.
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  lte attachment
  • kjm  

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  I think you're correct, seeing a register rather than the actual modem state. What complicates this issue further is that reading the register also seems to clear it. So that print('checking LTE') c='connected' if lte.isconnected() else 'not connected'; print('modem is', c) a='attached' if lte.isattached() else 'not attached'; print('modem is', a) a='attached' if lte.isattached() else 'not attached'; print('modem is', a) produces checking LTE modem is connected modem is attached modem is not attached