Christian,
the GSM/PPP part now works smoothly with all standard
situations tested so far.
But the GPS part doesn't work. It looks like the NMEA
sentences are received in the MUX channel, but not forwarded
to the NMEA module.
V (794230) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
FCS=fa, LEN=78)
V (794230) gsm-mux: ProcessFrame(CHAN=3, ADDR=0d, CTRL=ff,
FCS=f4, LEN=82)
These should be the NMEA sentences, but there are no
corresponding log entries from gsm-nmea.
New logs attached.
Regards,
Michael
Am 29.03.25 um 15:13 schrieb Info
via OvmsDev:
Hi Michael,
thanks for testing.
The results look odd, so I went back to the schematics of
OVMS modules and realized, that I was mistaken. The PWRKEY
pin is actually inverted in the modules as well. This
definetly explains the strange behaviour.
I changed now the logic in simcom_powering.h and the
inverted PWRKEY level is now the default.
Could you please run another test?
Best regards
Christian
Am 29.03.2025 um 09:25 schrieb
Michael Balzer via OvmsDev:
Christian,
well done on the 7670 support :-)
I've just done some first tests of your branch on the
7600, which turned up some issues. Logs attached:
- Cold boot failed in 2 of 3 test boots, with the
driver getting stuck in a loop (poweredon / identify /
muxstart)
- Regular shutdown fails to power down the modem in
time -- for a deep sleep phase, this would mean the
modem will remain powered on
- After a crash, the modem driver gets somehow stuck
in PowerOffOn state
It seems the test for reaction ("AT") sometimes gets
skipped, even though the modem isn't ready yet.
On the failed cold boot log, you can see this at the end:
I (389178) cellular-modem-auto:
Power Cycle
I (389178) Simcom: Power Cycle - T_off 2500 ms - T_on
200 ms
D (389178) events: Signal(system.modem.poweringon)
D (389188) events: Signal(egpio.output.0.low)
D (391678) events: Signal(egpio.output.0.high)
D (396678) events: Signal(egpio.output.0.low)
D (396878) events: Signal(egpio.output.0.high)
I (396878) cellular: State: Enter Identify state
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
D (396978) cellular: tx-cmd: AT+CGMM
I (397008) cellular: Identified cellular modem:
SIM7600/Experimental support for SIMCOM SIM7600
D (397008) cellular: Remove old 'auto' modem driver
I (397008) cellular: Set modem driver to 'SIM7600'
I (397008) cellular: State: Enter PoweredOn state
D (397008) events: Signal(system.modem.installed)
D (397008) events: Signal(system.modem.poweredon)
D (406178) cellular: tx-cmd:
AT+CPIN?;+CREG=1;+CGREG=1;+CEREG=1;+CTZU=1;+CTZR=1;+CLIP=1;+CMGF=1;+CNMI=1,2,0,0,0;+CSDH=1;+CMEE=2;+CSQ;+AUTOCSQ=1,1;E0;S0=0
D (408178) cellular: tx-cmd: AT+CGMR;+ICCID
D (416178) cellular: tx-cmd: AT+CMUX=0;+CATR=6
D (434808) cellular: mux-rx-line #0 (2/46): OK
D (434808) cellular: mux-rx-line #0 (3/39): RDY
D (434808) cellular: mux-rx-line #0 (12/23): +CPIN:
READY
D (434808) cellular: mux-rx-line #0 (8/11): SMS DONE
D (434808) cellular: mux-rx-line #0 (7/0): PB DONE
I (434808) cellular: State: Enter MuxStart state
D (434808) events: Signal(system.modem.muxstart)
Regards,
Michael
Am 26.03.25 um 13:13 schrieb
Info Zeitnitz via OvmsDev:
Dear all,
I finished to integrate the Simcom 7670 modem into the
OVMS code.
See https://github.com/zbchristian/Open-Vehicle-Monitoring-System-3.git
branch update_cellular.
Modem Powering
===============
I had problems to get the 7670 working with the current
code. The modem was stuck in a power cycle loop.
I checked the Simcom documentation for the 4 models
5360, 7000 series, 7600, 7670 and the powering procedure
via the PWRKEY pin is the same, but with different
on/off timing. Depending on the hardware, the PWRKEY can
be inverted as well. This is the case for my Lilygo
TCall board, but I think not for the OVMS HW versions.
At least version 3.1 connects the corresponding MAX7317
pin directly to the modem.
Assuming, that all hardware versions use the PWRKEY
procedure for powering, I streamlined the code and moved
the corresponding functions into separate files
(simcom_powering.cpp and simcom_powering.h). This avoids
the duplication of the code.
All this leads to substantial changes in ovms_cellular
and ovms_cellular_modem_driver as well.
The code works now perfectly for the 7670, but testing
is required for all other models.
If my assumptions about the OVMS HW versions are not
correct, or the modems do not work as documented, some
modifications might be needed.
GNSS Location
============
The 7670 no longer accepts the currently used AT
commands to obtain the location as a GRMC sentence. So,
I added code to the new 7670 class to request the
location via the AT+CGNSSINFO command.
Since this has to be send explicitly again and again, I
implemented a corresponding call in the StatusPoller of
the 7670.
All the NMEA related code has been adapted to handle the
corresponding CGNSSINFO response.
In conclusion, before doing a pull request, it would
make sense that the code is tested with the other
hardware and modem models.
So, tell me what you think and if the general strategy
of the mods make sense to you.
Best regards
Christian
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Michael Balzer * Am Rahmen 5 * D-58313 Herdecke
Fon 02330 9104094 * Handy 0176 20698926
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--
Michael Balzer * Am Rahmen 5 * D-58313 Herdecke
Fon 02330 9104094 * Handy 0176 20698926
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