단일 보드 컴퓨터를 통해 GSM 연결을 구현하려고 합니다. 모든 것이 정리된 것 같아요. 다음은 모뎀 정보의 출력입니다.
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General | dbus path: /org/freedesktop/ModemManager1/Modem/0
| device id: 10c51b4b5511adedf5c6df0380e7acab4ce64f5a
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Hardware | manufacturer: QUALCOMM INCORPORATED
| model: QUECTEL Mobile Broadband Module
| firmware revision: EC25AUFAR06A01M4G
| carrier config: default
| h/w revision: 10000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 861585041067073
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System | device: /sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2
| drivers: option1, qmi_wwan
| plugin: Quectel
| primary port: cdc-wdm0
| ports: ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0 (qmi), wwan0 (net),
| ttyUSB3 (at)
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Numbers | own: 61451690967
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Status | unlock retries: sim-pin (3), sim-pin2 (0), sim-puk (10), sim-puk2 (0)
| state: enabled
| power state: on
| signal quality: 0% (cached)
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Modes | supported: allowed: 2g; preferred: none
| allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 2g, 3g; preferred: 3g
| allowed: 2g, 3g; preferred: 2g
| allowed: 2g, 4g; preferred: 4g
| allowed: 2g, 4g; preferred: 2g
| allowed: 3g, 4g; preferred: 3g
| allowed: 3g, 4g; preferred: 4g
| allowed: 2g, 3g, 4g; preferred: 4g
| allowed: 2g, 3g, 4g; preferred: 3g
| allowed: 2g, 3g, 4g; preferred: 2g
| current: allowed: 2g, 3g, 4g; preferred: 4g
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Bands | supported: egsm, dcs, pcs, g850, utran-1, utran-5, utran-8, utran-2,
| eutran-1, eutran-2, eutran-3, eutran-4, eutran-5, eutran-7, eutran-8,
| eutran-28, eutran-40
| current: egsm, dcs, pcs, g850, utran-1, utran-5, utran-8, utran-2,
| eutran-1, eutran-2, eutran-3, eutran-4, eutran-5, eutran-7, eutran-8,
| eutran-28, eutran-40
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IP | supported: ipv4, ipv6, ipv4v6
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3GPP | imei: 861585041067073
| registration: idle
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3GPP EPS | ue mode of operation: csps-2
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SIM | dbus path: /org/freedesktop/ModemManager1/SIM/0
상태 섹션에 신호가 표시되지 않는 것 같습니다. 출력 nmcli con:
NAME UUID TYPE DEVICE
cellular d811a35a-70fc-3716-84e1-a3578d10cc1e gsm cdc-wdm0
resin-wifi-01 a58e405d-fdc2-3649-9339-5bbaea740c76 wifi wlan0
supervisor0 8148d985-dc90-4f8c-8e38-62f83f4f13ba bridge supervisor0
유선은 항상 GSM입니다연결하다(한 번 연결되지 않음):
cdc-wdm0: connecting (prepare) to cellular
"cdc-wdm0"
gsm (option1, qmi_wwan), hw
셀룰러 네트워크를 수동으로 시작하려고 합니다.
root@6f5afca:~# nmcli c up cellular
Error: Connection activation failed: Network registration timed out
나는 지금까지 모든 것을 시도했습니다. 휴대폰으로 SIM 카드를 테스트했는데 제대로 작동했습니다. 왜 연결이 안되는지 모르겠네요.