<div dir="ltr"><div><div>> Thanks for the patch. It doesn't seem to be working here unfortunately. </div></div><div dir="ltr"><div>this is the patch to improve SIM hot swap error management in both AT and MBIM based modems :) </div>The patch for GE910-QUAD is in thread "[PATCH] telit-plugin: ignore QSS when SIM-ME interface is locked"</div> <div class="gmail_quote"><div dir="ltr">On Tue, 25 Jul 2017 at 10:59 Tim Small <<a href="mailto:tim@seoss.co.uk" target="_blank">tim@seoss.co.uk</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Carlo, Thanks for the patch. It doesn't seem to be working here unfortunately. It looks like AT+CSIM=1 is issued, but the corresponding AT+CSIM=0 command isn't, so the SIM is still locked for direct interaction, so subsequent AT commands are getting SIM not present responses. It looks like the trouble starts when an ATV1 command is issued in the middle of the CSIM PUK enquiries? Just to clarify this is a Telit GE910-QUAD (most recent firmware) with a single serial connection (via a USB to UART adaptor at the moment since I'm debugging with my PC), without using CMUX mode. Full trace here, with excerpts included below... <a href="https://gist.github.com/tim-seoss/d175482c56072a0d303d315ca7353eb5#file-sim-hot-swap-debug-L795" rel="noreferrer" target="_blank">https://gist.github.com/tim-seoss/d175482c56072a0d303d315ca7353eb5#file-sim-hot-swap-debug-L795</a> Cheers, Tim. 19.623477] SIM is ready, running after SIM unlock step... 19.623513] (ttyUSB0) device open count is 1 (close) 21.306803] (ttyUSB0) device open count is 2 (open) 21.306889] (ttyUSB0): --> 'AT+CSIM=1<CR>' 21.329374] (ttyUSB0): <-- '<CR>' 21.329663] (ttyUSB0): <-- '<LF>O' 21.329813] (ttyUSB0): <-- 'K<CR><LF>' 21.329858] (ttyUSB0) device open count is 3 (open) 21.329887] (ttyUSB0) device open count is 2 (close) 21.329933] (ttyUSB0): --> 'AT+CSIM=10,0020000100<CR>' 21.351378] (ttyUSB0): <-- '<CR><LF>#QSS: 0<CR><LF>' 21.351811] QSS: status changed 'sim-inserted -> sim-removed 21.352036] QSS: SIM swap detected 21.352490] load PIN unlock retries got no response: AT command was cancelled 21.352742] (ttyUSB0) device open count is 3 (open) 21.352935] (ttyUSB0) device open count is 2 (close) 21.353081] [device /sys/devices/pci0000:00/0000:00:14.0/usb1/1-9] creating modem with plugin 'Telit' and '1' ports 21.353650] (ttyUSB0) type 'at' claimed by /sys/devices/pci0000:00/0000:00:14.0/usb1/1-9 21.353902] (/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9) tty/ttyUSB0 at (primary) 21.354059] (/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9) tty/ttyUSB0 data (primary) 21.357925] (ttyUSB0) opening serial port... 21.358122] (ttyUSB0): couldn't set serial port closing_wait to none: Inappropriate ioctl for device 21.358157] (ttyUSB0): setting up baudrate: 115200 21.358181] (ttyUSB0) device open count is 1 (open) 21.358193] (ttyUSB0): running init sequence... 21.358218] (ttyUSB0) device open count is 2 (open) 21.358244] (ttyUSB0) device open count is 3 (open) 21.358263] Modem recreated for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9' 21.358546] loading current capabilities... 21.358574] (ttyUSB0) device open count is 4 (open) 21.358596] (ttyUSB0): --> 'AT+CSIM=10,002C000100<CR>' 21.358614] (ttyUSB0): --> 'ATE0<CR>' 21.366384] (ttyUSB0): <-- '<CR>' 21.366594] (ttyUSB0): <-- '<LF>' 21.366728] (ttyUSB0): <-- '+C' 21.366813] (ttyUSB0): <-- 'S' 21.366907] (ttyUSB0): <-- 'I' 21.366984] (ttyUSB0): <-- 'M' 21.367066] (ttyUSB0): <-- ':' 21.367152] (ttyUSB0): <-- ' ' 21.367237] (ttyUSB0): <-- '4' 21.367330] (ttyUSB0): <-- ',' 21.367432] (ttyUSB0): <-- '"' 21.367511] (ttyUSB0): <-- '6' 21.367593] (ttyUSB0): <-- '3' 21.367674] (ttyUSB0): <-- 'C' 21.367756] (ttyUSB0): <-- '3' 21.367839] (ttyUSB0): <-- '"' 21.367925] (ttyUSB0): <-- '<CR>' 21.368013] (ttyUSB0): <-- '<LF>' 21.368096] (ttyUSB0): <-- '<CR>' 21.368174] (ttyUSB0): <-- '<LF>' 21.368286] (ttyUSB0): <-- 'O' 21.368498] (ttyUSB0): <-- 'K' 21.368582] (ttyUSB0): <-- '<CR><LF>' 21.368627] (ttyUSB0): --> 'ATV1<CR>' 21.381552] load PUK unlock retries got no response: AT command was cancelled 21.381615] (ttyUSB0) device open count is 1 (close) 21.381641] load PIN2 unlock retries got no response: No AT port available to run command 21.381665] load PUK2 unlock retries got no response: No AT port available to run command 21.381685] Couldn't unlock SIM card: No AT port available to run command 21.381713] Couldn't load unlock retries: 'Could not get any of the SIM unlock retries values' 21.381858] loading SIM identifier... 21.382001] loading SIM identifier... 21.382025] couldn't load SIM identifier: 'No AT port available to run command' 21.382042] loading IMSI... 21.382063] couldn't load IMSI: 'No AT port available to run command' 21.382082] loading Operator ID... 21.382103] couldn't load Operator identifier: 'No AT port available to run command' 21.382116] loading Operator Name... 21.382139] couldn't load Operator name: 'No AT port available to run command' 21.382190] loading own numbers... 21.382213] couldn't load list of Own Numbers: 'No AT port available to run command' 21.382260] couldn't load current Bands: 'No AT port available to run command' 21.382325] couldn't initialize the modem: 'Operation was cancelled' 21.382360] (ttyUSB0) device open count is 0 (close) 21.382372] (ttyUSB0) closing serial port... 21.382383] (ttyUSB0): serial port closing_wait was reset! 21.382399] (ttyUSB0): couldn't set serial port closing_wait to none: Inappropriate ioctl for device 21.382417] (ttyUSB0) serial port closed 21.382443] (ttyUSB0) forced to close port 21.772444] (ttyUSB0): <-- '<CR>' 21.772749] (ttyUSB0): <-- '<LF>+' 21.772834] (ttyUSB0): <-- 'CGR' 21.772909] (ttyUSB0): <-- 'E' 21.772990] (ttyUSB0): <-- 'G' 21.773060] (ttyUSB0): <-- ':' 21.773134] (ttyUSB0): <-- ' ' 21.773321] (ttyUSB0): <-- '0<CR>' 21.773416] (ttyUSB0): <-- '<LF>' 24.306814] (ttyUSB0): --> 'AT+CMEE=1<CR>' 24.324637] (ttyUSB0): <-- '<CR>' 24.324963] (ttyUSB0): <-- '<LF>O' -- South East Open Source Solutions Limited Registered in England and Wales with company number 06134732. 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