Module at 

AT response line parsing and solicited vs URC classification.

Structs

AtCommandResult

AT command result returned by native at / at_phases / send_sms_pdu.

AtCompletion

Incremental form of at_final_line_complete / at_intermediate_line_complete: feed the reply chunk by chunk; each line is judged once, so a long reply costs time linear in its size. After each push the answer is the one the one-shot check gives for all bytes pushed so far.

ExchangeDemux

Routes bytes during an exchange: URC lines are emitted live, the rest is the reply.

ExchangeResponse

Structured exchange result returned to the frontend.

ParsedAtResponse

Parsed outcome of an AT exchange response.

Enums

AtParseStatus

AtResultFormat

AT result line format (V.250 verbose vs numeric ATV0).

ExchangeMatch

How the read loop decided the exchange finished.

ExchangePhase

Exchange demux phase, see ExchangeDemux::phase.

Constants

MAX_DEMUX_LINE

Longest unterminated line ExchangeDemux keeps; longer runs without a line feed (data after CONNECT, binary noise) cannot be a URC and are dropped.

Functions

at_final_line_complete

Returns Some(match) when the buffer holds a complete AT final line.

at_intermediate_line_complete

Completion for prompt-style commands (AT+CMGS=… → > , ATD → CONNECT).

classify_final_line

Final result line, case-insensitive (OK, ok, …): the V.250 verbose codes, +CME ERROR: (27.007) and +CMS ERROR: (27.005). SEND OK / SEND FAIL are not V.250: they are the finals of the TCP/IP stacks of many modules (AT+CIPSEND) and stay for compatibility.

classify_intermediate_line

Intermediate result codes that must not complete an exchange (V.250 verbose).

classify_intermediate_line_with_format

Intermediate lines including numeric 1 (CONNECT) when ATV0 is active.

classify_numeric_final_line

V.250 numeric final result codes (ATV0): 0 OK, 3 NO CARRIER, 4 ERROR, 6 NO DIALTONE, 7 BUSY, 8 NO ANSWER. 1 (CONNECT) is intermediate, 2 (RING) unsolicited, 5 is unassigned.

derive_solicited_prefixes

Derive expected solicited response headers from an AT command (e.g. AT+CSQ → +CSQ:); a composite command gets one per part (AT+CSQ;+CREG? → +CSQ:, +CREG:). V.250 basic commands in front of an extended one are skipped (ATE0V1+CSQ, AT&F+CSQ → +CSQ:).

is_ext_info_line

Vendor extended information line (+CSQ:, ^SYSCFG:, #SGACT:, …).

is_likely_urc

is_numeric_result_line

True when the line is a strict V.250 numeric code (0…99).

merge_solicited_prefixes

Merge user-provided prefixes with auto-derived ones from the command string.

parse_at_response

Classify lines into solicited body vs URC using echo / solicited prefixes.

split_lines

Split buffer into non-empty trimmed lines (handles \r\n, \n and a lone \r: V.250 §5.7.1 ends a numeric ATV0 result code, and the echo, with S3 only).

urc_lines_from_drain

Extract URC lines from drained bytes (for drainRx forwarding). The data line of a two-line URC (+CMT: ,23 + PDU) comes right after its header.