search

vittorioexp / Sim800L-Arduino-Library-revised

The SIM800L Arduino Library is a simple and easy-to-use library for the SIM800L module, allowing for quick and efficient communication with the module using the Arduino platform.
GNU General Public License v3.0
101 stars 46 forks source link

How can I put SIM800L in Power down mode with this library? #4

Open JuanHauara opened 7 years ago

JuanHauara commented 7 years ago

Hello, if I define "GSM.setFunctionalityMode(0)", the SIM800L will be in Power down mode? Is this the power down mode defined in page 60 of the datasheet in which the module consum 50uA?

vittorioexp commented 7 years ago

setSleepMode(true) : Enable slow clock, it is controlled by DTR. When DTR is high, module can enter sleep mode. When DTR changes to low level, module can quit sleep mode. setSleepMode(false) : Disable slow clock, module will not enter sleep mode. This function uses AT+CSCLK=0/1 command. I think it won't sleep instantly.

vittorioexp commented 7 years ago

Does it work for you?

berkesandor commented 6 years ago

I have a GSM module: https://www.aliexpress.com/item/SIM800L-V2-0-5V-Wireless-GSM-GPRS-MODULE-Quad-Band-W-Antenna-Cable-Cap/32740662773.html?spm=2114.search0104.3.1.OIJpfe&ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10068_10171_10084_10083_10119_5370020_10080_10304_10307_10082_10081_10110_10137_10111_10302_10060_10112_10113_10155_10114_10154_10056_10055_10054_10310_10312_10059_100031_10099_10078_10079_10103_10073_10102_10120_10052_10053_10142_10107_10050_10051-10120,searchweb201603_1,ppcSwitch_5&btsid=a7f7c025-6aa0-47d7-83dc-1303b48a4f50&algo_expid=83089329-2e13-4fc9-8316-f143ed2b59af-3&algo_pvid=83089329-2e13-4fc9-8316-f143ed2b59af Is it possible to put this into sleep? And to receive SMS in sleep mode, after that, to retouch the arduino?

JuanHauara commented 6 years ago

Well, I have not tried that because I am using a Mosfet to power down the alimentation of the module. I chose that because I need the lowest possible power consumption.

vittorioexp commented 6 years ago

If you want to put your module in sleep mode, use "setSleepMode(true)" method of the library. To wake up it, use "setSleepMode(false)". See Sim800L.cpp file for more details

berkesandor commented 6 years ago

I would like to receive SMS in sleep mode as well, to awaken the arduino. Therefore disconnecting the GSM module with a mosfet is not good for me. What i have a module for, the dtr pin does not get out, can it so much to suffocate the module?

AGenchev commented 6 years ago

@berkesandor: I fail to set it to low power either. I have SIM800L (red PCB). I plan to connect DTR to the +4Vcc of the module, issue AT+CSCLK=1 and disconnect the TX wire from the serial port because it may leak current towards the MCU. If this doesn't work, there's one more option - One guy from UK has reported that he got it to low power using CSCLK=2 mode. This mode does not need DTR pin but uses auto wakeup on RX here: https://groups.google.com/forum/#!topic/reading-hackspace/8PwIo7imD0k

vittorioexp commented 6 years ago

Thank you @AGenchev

yuliaretno96 commented 3 years ago

Well, I have not tried that because I am using a Mosfet to power down the alimentation of the module. I chose that because I need the lowest possible power consumption.

@JuanHauara which MOSFET do you use? and is it connected to VCC or GND pin in SIM800L? Thank you

JuanHauara commented 2 years ago

Hello @yuliaretno96 and sorry for the delay. I am using the Si2301CDS, is channel P MOSFET so I connect it to the VCC pin.