diff --git a/config.toml b/config.toml index c3e868c1..d15755c5 100644 --- a/config.toml +++ b/config.toml @@ -739,6 +739,13 @@ theme = "doc-theme" parent = "firmwareapi@pycom@network" weight = 60 +[[menu.main]] + name = "AT Tips & Tricks" + url = "/firmwareapi/pycom/network/lte/at/" + identifier = "firmwareapi@pycom@network@lte@at" + parent = "firmwareapi@pycom@network@lte" + weight = 10 + [[menu.main]] name = "MDNS" url = "/firmwareapi/pycom/network/mdns/" diff --git a/content/firmwareapi/pycom/network/lte.md b/content/firmwareapi/pycom/network/lte/_index.md similarity index 100% rename from content/firmwareapi/pycom/network/lte.md rename to content/firmwareapi/pycom/network/lte/_index.md diff --git a/content/firmwareapi/pycom/network/lte/at.md b/content/firmwareapi/pycom/network/lte/at.md new file mode 100644 index 00000000..d0116e2b --- /dev/null +++ b/content/firmwareapi/pycom/network/lte/at.md @@ -0,0 +1,87 @@ +--- +title: "AT Commands" +--- + +Next to using the [LTE Module](../), it is also possible to manually send AT commands to the LTE modem. Below we specify some of them in more detail + +Note that you can only use AT commands when _not_ in PPP mode + +``` +import time +from network import LTE +lte=LTE(debug=True) +time.sleep(1) +``` + +### LTE modem verbosity +AT+CEREG + +### Find nearby cell towers +Scan the local area for cell towers and their ID's. As the LTE modem does a live scan, we need the timeout to be large in order to get full details. +Use argument `0` for a full scan, and `1` for a fast scan. +```python + +lte.send_at_cmd('AT+SQNINS=1', timeout=50000) +``` +A proper response will be of the following format: (missing information will not be displayed) +``` +,,,,,,,,, , +``` + +### Find the currently used band +> Only works when the LTE modem is attached to the network + +```python +band_to_earfcn = [ +# ( low, mid,high) # band + (-1,-1,-1), # dummy entry for index 0 + ( 0, 300, 599), # 1 + ( 600, 900,1199), # 2 + (1200,1575,1949), # 3 + (1950,2175,2399), # 4 + (2400,2525,2649), # 5 + (2650,2700,2749), # 6 + (2750,3100,3449), # 7 + (3450,3625,3799), # 8 + (3800,3975,4149), # 9 + (4150,4450,4749), # 10 + (4750,4850,4949), # 11 + (5010,5090,5179), # 12 + (5180,5230,5279), # 13 + (5280,5330,5379), # 14 + (-2,-2,-2), # 15 + (-3,-3,-3), # 16 + (5730,5790,5849), # 17 + (5850,5925,5999), # 18 + (6000,6075,6149), # 19 + (6150,6300,6449), # 20 + (6450,7125,6599), # 21 +] + +earfcn_to_band = {} +for band in range(1, len(band_to_earfcn)): + earfcn_to_band[band_to_earfcn[band]] = band + + +def find_band(earfcn, verbose=False): + if isinstance(earfcn, str): + earfcn = int(earfcn) + for b in range(len(band_to_earfcn)): + x = band_to_earfcn[b] + if x[0] <= earfcn and x[2] >= earfcn: + if verbose: + print("EARFCN", earfcn, "is in range", x, "which is band", b) + return b + return None + +def band(): + try: + mn = lte.send_at_cmd('AT+SQNMONI=9') + print(mn) + # +SQNMONI: 20416 Cc:204 Nc:16 RSRP:-80.20 CINR:0.00 RSRQ:-12.90 TAC:31 Id:222 EARFCN:3700 PWR:-59.52 PAGING:64 + # +SQNMONI: NL KPN Cc:204 Nc:08 RSRP:-90.00 CINR:18.00 RSRQ:-7.70 TAC:64503 Id:176 EARFCN:6400 PWR:-74.52 PAGING:64 + # +SQNMONI: Amarisoft Network Cc:001 Nc:01 RSRP:-88.20 CINR:-1.30 RSRQ:-13.30 TAC:2 Id:1 EARFCN:6309 PWR:-67.12 PAGING:128 + return find_band(int(mn.split(':')[9].split(' ')[0]), verbose=True) + except Exception as e: + print(e) +``` \ No newline at end of file pFad - Phonifier reborn

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