Hey, > > I didn't found information in Telit documentation about the GPS control with > QMI. I'll try to poke them directly. On the other side, I did enable the gps > with success using mmcli but didn't had any data location under the > --location-get command. > Here is the log when I do the command mmcli -m 0 --location-enable-gps-nmea > if you ever see something unusual. > ---------------------------------------------------------------------------------- > <debug> [1587919447.966940] Got QMI WDS event report > <debug> [1587919448.098691] Setting up location sources: '3gpp-lac-ci, > gps-nmea' > <debug> [1587919448.098791] Location '3gpp-lac-ci' gathering is already > enabled... > <debug> [1587919448.098826] Location 'gps-raw' gathering is already > disabled... > <debug> [1587919448.098855] Location 'agps-msa' gathering is already > disabled... > <debug> [1587919448.098880] Location 'agps-msb' gathering is already > disabled... > <debug> [1587919448.098901] Need to enable the following location sources: > 'gps-nmea' > [/dev/cdc-wdm0] sent message... > <<<<<< RAW: > <<<<<< length = 38 > <<<<<< data = > 01:25:00:00:10:03:00:03:00:22:00:19:00:13:04:00:E8:03:00:00:12:04:00:02:00:00:00:10:04:00:01:00:00:00:01:01:00:10 > [/dev/cdc-wdm0] sent generic request (translated)... > <<<<<< QMUX: > <<<<<< length = 37 > <<<<<< flags = 0x00 > <<<<<< service = "loc" > <<<<<< client = 3 > <<<<<< QMI: > <<<<<< flags = "none" > <<<<<< transaction = 3 > <<<<<< tlv_length = 25 > <<<<<< message = "Start" (0x0022) > <<<<<< TLV: > <<<<<< type = "Minimum Interval between Position Reports" (0x13) > <<<<<< length = 4 > <<<<<< value = E8:03:00:00 > <<<<<< translated = 1000 > <<<<<< TLV: > <<<<<< type = "Intermediate Report State" (0x12) > <<<<<< length = 4 > <<<<<< value = 02:00:00:00 > <<<<<< translated = disable > <<<<<< TLV: > <<<<<< type = "Fix Recurrence Type" (0x10) > <<<<<< length = 4 > <<<<<< value = 01:00:00:00 > <<<<<< translated = periodic-fixes > <<<<<< TLV: > <<<<<< type = "Session ID" (0x01) > <<<<<< length = 1 > <<<<<< value = 10 > <<<<<< translated = 16 > [/dev/cdc-wdm0] received message... > <<<<<< RAW: > <<<<<< length = 20 > <<<<<< data = 01:13:00:80:10:03:02:03:00:22:00:07:00:02:04:00:00:00:00:00 > [/dev/cdc-wdm0] received generic response (translated)... > <<<<<< QMUX: > <<<<<< length = 19 > <<<<<< flags = 0x80 > <<<<<< service = "loc" > <<<<<< client = 3 > <<<<<< QMI: > <<<<<< flags = "response" > <<<<<< transaction = 3 > <<<<<< tlv_length = 7 > <<<<<< message = "Start" (0x0022) > <<<<<< TLV: > <<<<<< type = "Result" (0x02) > <<<<<< length = 4 > <<<<<< value = 00:00:00:00 > <<<<<< translated = SUCCESS > [/dev/cdc-wdm0] sent message... > <<<<<< RAW: > <<<<<< length = 24 > <<<<<< data = > 01:17:00:00:10:03:00:04:00:21:00:0B:00:01:08:00:04:00:00:00:00:00:00:00 > [/dev/cdc-wdm0] sent generic request (translated)... > <<<<<< QMUX: > <<<<<< length = 23 > <<<<<< flags = 0x00 > <<<<<< service = "loc" > <<<<<< client = 3 > <<<<<< QMI: > <<<<<< flags = "none" > <<<<<< transaction = 4 > <<<<<< tlv_length = 11 > <<<<<< message = "Register Events" (0x0021) > <<<<<< TLV: > <<<<<< type = "Event Registration Mask" (0x01) > <<<<<< length = 8 > <<<<<< value = 04:00:00:00:00:00:00:00 > <<<<<< translated = nmea > [/dev/cdc-wdm0] received message... > <<<<<< RAW: > <<<<<< length = 20 > <<<<<< data = 01:13:00:80:10:03:02:04:00:21:00:07:00:02:04:00:00:00:00:00 > [/dev/cdc-wdm0] received generic response (translated)... > <<<<<< QMUX: > <<<<<< length = 19 > <<<<<< flags = 0x80 > <<<<<< service = "loc" > <<<<<< client = 3 > <<<<<< QMI: > <<<<<< flags = "response" > <<<<<< transaction = 4 > <<<<<< tlv_length = 7 > <<<<<< message = "Register Events" (0x0021) > <<<<<< TLV: > <<<<<< type = "Result" (0x02) > <<<<<< length = 4 > <<<<<< value = 00:00:00:00 > <<<<<< translated = SUCCESS > ---------------------------------------------------------------------------------- >
The above sequence looks good to me; you start the GPS engine and you also register for NMEA indications. After that, you should start receiving NMEA traces in QMI LOC indications, but I assume you're not receiving any? What MM and libqmi versions are you using? > By curiosity, do you know a good references for qmi protocol so I can dig > into it? > If you google for "Telit QMI LM940" you'll probably find easily a QMI reference from Telit, but unfortunately I don't think it has much detail on the LOC service itself. Other than that, I don't think there are public online references for QMI documents anywhere else. If you find some, let us know! -- Aleksander https://aleksander.es _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
