diff --git a/gatchat/gatsyntax.c b/gatchat/gatsyntax.c index 5db01a7f..d7c9ee23 100644 --- a/gatchat/gatsyntax.c +++ b/gatchat/gatsyntax.c @@ -182,6 +182,16 @@ static GAtSyntaxResult gsmv1_feed(GAtSyntax *syntax, case GSMV1_STATE_GARBAGE: if (byte == '\r') syntax->state = GSMV1_STATE_GARBAGE_CHECK_LF; + /* This handles the case of echo of the PDU terminated + * by CtrlZ character + */ + else if (byte == 26) { + syntax->state = GSMV1_STATE_IDLE; + res = G_AT_SYNTAX_RESULT_UNRECOGNIZED; + i += 1; + goto out; + } + break; case GSMV1_STATE_GARBAGE_CHECK_LF: