View Source VintageNetQMI.ASUCalculator (vintage_net_qmi v0.4.2)

Convert raw ASU values to friendlier units

The following conversions are done:

Summary

bars()

Number of bars out of 4 to show in a UI

dbm()

dBm

gsm_asu()

GSM ASU values

lte_asu()

LTE ASU values

umts_asu()

UMTS ASU values

Compute signal level numbers from a GSM ASU

@type bars() :: 0..4

Number of bars out of 4 to show in a UI

@type dbm() :: neg_integer()

dBm

@type gsm_asu() :: 0..31 | 99

GSM ASU values

ASU values map to RSSI. 99 means unknown

@type lte_asu() :: 0..97

LTE ASU values

ASU values map to RSRP

@type umts_asu() :: 0..90 | 255

UMTS ASU values

ASU values map to RSCP

@spec from_gsm_asu(gsm_asu()) :: %{asu: gsm_asu(), dbm: dbm(), bars: bars()}

Compute signal level numbers from a GSM ASU

The AT+CSQ command should report ASU values in this format.

@spec from_lte_rssi(dbm()) :: %{asu: non_neg_integer(), dbm: dbm(), bars: bars()}