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AT Command Set

MC35_ATC_01_V05.00 Page 81 of 256 15.07.2002

4.11.1 Wake up the ME from SLEEP mode

A wake-up event is any event that switches off the SLEEP mode and causes the ME to return to full

functionality. In short, it takes the ME back to AT+CFUN=1.

Definitions of the state transitions described in Table 7:

Yes = ME exits SLEEP mode.

No = ME does not exit SLEEP mode.

Table 7: Wake-up events in NON-CYCLIC and CYCLIC SLEEP mode

Event From SLEEP mode

AT+CFUN=0 to

AT+CFUN=1

From SLEEP mode

AT+CFUN=5 or 6 to

AT+CFUN=1

Ignition line No No

/RTS0 (falling edge) Yes No

Unsolicited Result Code (URC) Yes Yes

Incoming voice or data call Yes Yes

Any AT command

(incl. outgoing voice or data call, outgo-

ing SMS)

Not possible

(UART disabled)

Incoming SMS depending on mode se-

lected by AT+CNMI:

AT+CNMI=0,0 (= default, no indication

upon receipt of SMS)

AT+CNMI=1,1 (= displays URC upon

receipt of SMS)

Yes

GPRS data transfer Not possible

(UART disabled)

RTC alarm Yes Yes

AT+CFUN=1 Not possible

(UART disabled)

Yes

Recommendation:

· In NON-CYCLIC SLEEP mode, you can set an RTC alarm to wake up the ME and return to full

functionality. This is a useful approach because, in this mode, the AT interface is not accessible.

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Siemens MC35 Spécifications Page 81