Difference between revisions of "At commands"
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| + | - Overview - | ||
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| + | Good starting point article to understand basic AT command types and a little history of AT commands: | ||
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| + | * https://www.engineersgarage.com/at-commands-gsm-at-command-set/ | ||
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| + | __TOC__ | ||
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Revision as of 21:35, 2 May 2023
- Overview -
Good starting point article to understand basic AT command types and a little history of AT commands:
0520
AT commands sent by firmware app, and special C language escape sequence for percent character:
- https://devzone.nordicsemi.com/f/nordic-q-a/87162/nrf9160-proprietary-at-commands-ie-at-cmng-1-via-firmware-functions
- https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/xmodemsleep.html
- https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/xt3412.html
0425 AT%SMODEMSLEEP command . . .
~04xx
Acronyms used in Nordic Semi nRF9160 and LTE modem documentation:
Power Saving Mode (PSM) command details:
Nordic Semi Online Power Profiler notes
* https://devzone.nordicsemi.com/power/w/opp/3/online-power-profiler-for-lte - SECTION - General settings: Chip: nRF9160 rev2 Network mode: LTE-M - SECTION - PSM Enable [y] Periodic TAU (sec) . . . a.k.a. T3412 timer Active time (sec) . . . T3324 timer "Lengh of time modem must stay in RRC idle mode before entering PSM, stay reachable by network in case data needed - SECTION - RRC idle mode Enable [y] iDRX interval (sec) . . . "How often User Equipment listens for incoming data on the network." - SECTION - Data transfer Enable [y] Data size (bytes) Data transfer interval (sec) - SECTION - Network paramters TX output power (dBm) . . . dynamically adjusted by network provider. RRC inactivity timer (sec) . . . decided by network provider. cDRX interval (sec) . . . decided by network provider. cDRX on duration (ms) . . . decided by network provider. cDRX inactivity timer (ms) . . . radio must remain in cDRX mode for this period before entering DRX mode, this decided by network provider. iDRX PDCCH repetitions (ms) . . . how long radio must "listen" during iDRX interval, set by network provider cannot be set by User Equipment (UE). - SECTION - SIM card settings Clock stop current (uA) . . . card specified current consumption when card powered at 1v8. Enable shut down in iDRX [y] . . . review AT%XDATAPRFL command and SIM card specifications to see whether card power shutdown supported by card maker. - SECTION - GPS Enable [n]
