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Hi Michael,<br>
thanks for testing.<br>
<br>
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. <br>
<br>
I changed now the logic in simcom_powering.h and the inverted PWRKEY
level is now the default.<br>
<br>
Could you please run another test?<br>
<br>
Best regards<br>
Christian<br>
<br>
<div class="moz-cite-prefix">Am 29.03.2025 um 09:25 schrieb Michael
Balzer via OvmsDev:<br>
</div>
<blockquote type="cite"
cite="mid:1651ee05-ec1d-4677-a57c-a9ec7cfbbd6d@expeedo.de">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
Christian,<br>
<br>
well done on the 7670 support :-)<br>
<br>
I've just done some first tests of your branch on the 7600, which
turned up some issues. Logs attached:<br>
<ul>
<li>Cold boot failed in 2 of 3 test boots, with the driver
getting stuck in a loop (poweredon / identify / muxstart)</li>
<li>Regular shutdown fails to power down the modem in time --
for a deep sleep phase, this would mean the modem will remain
powered on</li>
<li>After a crash, the modem driver gets somehow stuck in
PowerOffOn state<br>
</li>
</ul>
It seems the test for reaction ("AT") sometimes gets skipped, even
though the modem isn't ready yet.<br>
<br>
On the failed cold boot log, you can see this at the end:<br>
<br>
<font face="monospace"><b>I (389178) cellular-modem-auto: Power
Cycle</b><br>
I (389178) Simcom: Power Cycle - T_off 2500 ms - T_on 200 ms<br>
D (389178) events: Signal(system.modem.poweringon)<br>
D (389188) events: Signal(egpio.output.0.low)<br>
D (391678) events: Signal(egpio.output.0.high)<br>
D (396678) events: Signal(egpio.output.0.low)<br>
D (396878) events: Signal(egpio.output.0.high)<br>
<b>I (396878) cellular: State: Enter Identify state<br>
D (396978) cellular: tx-cmd: AT+CGMM</b><br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
D (396978) cellular: tx-cmd: AT+CGMM<br>
I (397008) cellular: Identified cellular modem:
SIM7600/Experimental support for SIMCOM SIM7600<br>
D (397008) cellular: Remove old 'auto' modem driver<br>
I (397008) cellular: Set modem driver to 'SIM7600'<br>
<b>I (397008) cellular: State: Enter PoweredOn state</b><br>
D (397008) events: Signal(system.modem.installed)<br>
D (397008) events: Signal(system.modem.poweredon)<br>
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<br>
D (408178) cellular: tx-cmd: AT+CGMR;+ICCID<br>
D (416178) cellular: tx-cmd: AT+CMUX=0;+CATR=6<br>
D (434808) cellular: mux-rx-line #0 (2/46): OK<br>
<b>D (434808) cellular: mux-rx-line #0 (3/39): RDY</b><br>
D (434808) cellular: mux-rx-line #0 (12/23): +CPIN: READY<br>
D (434808) cellular: mux-rx-line #0 (8/11): SMS DONE<br>
D (434808) cellular: mux-rx-line #0 (7/0): PB DONE<br>
I (434808) cellular: State: Enter MuxStart state<br>
D (434808) events: Signal(system.modem.muxstart)</font><br>
<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 26.03.25 um 13:13 schrieb Info
Zeitnitz via OvmsDev:<br>
</div>
<blockquote type="cite"
cite="mid:d5cf7822-c7a8-4729-b16d-a9cf74aaab00@zeitnitz.eu">Dear
all, <br>
I finished to integrate the Simcom 7670 modem into the OVMS
code. <br>
See <a class="moz-txt-link-freetext"
href="https://github.com/zbchristian/Open-Vehicle-Monitoring-System-3.git"
moz-do-not-send="true">https://github.com/zbchristian/Open-Vehicle-Monitoring-System-3.git</a>
branch update_cellular. <br>
<br>
Modem Powering <br>
=============== <br>
I had problems to get the 7670 working with the current code.
The modem was stuck in a power cycle loop. <br>
<br>
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. <br>
<br>
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. <br>
<br>
All this leads to substantial changes in ovms_cellular and
ovms_cellular_modem_driver as well. <br>
<br>
The code works now perfectly for the 7670, but testing is
required for all other models. <br>
If my assumptions about the OVMS HW versions are not correct, or
the modems do not work as documented, some modifications might
be needed. <br>
<br>
GNSS Location <br>
============ <br>
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. <br>
Since this has to be send explicitly again and again, I
implemented a corresponding call in the StatusPoller of the
7670. <br>
All the NMEA related code has been adapted to handle the
corresponding CGNSSINFO response. <br>
<br>
<br>
In conclusion, before doing a pull request, it would make sense
that the code is tested with the other hardware and modem
models. <br>
<br>
So, tell me what you think and if the general strategy of the
mods make sense to you. <br>
<br>
Best regards <br>
Christian <br>
<br>
<br>
<br>
<br>
<br>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Michael Balzer * Am Rahmen 5 * D-58313 Herdecke
Fon 02330 9104094 * Handy 0176 20698926</pre>
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