60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# Raspberry Pi sim800l gsm module
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- connecting the raspberry pi to sim8ool gsm module to send, receive sms, delete sms etc.
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>> SIM900/SIM800 are 2G only modems, make sure your provider supports 2G as it is already being phased out in a lot of areas around the world, else a 3G/4G modem like the SIM7100 / SIM5300 is warranted.
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## Requirements
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- Raspberry pi 3 with Raspbian OS installed.
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- Sim800L GSM module
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- external power supply for the Sim800L (5v 1A worked for our case, use the correct one for your module)
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- A bunch of jumper wires.
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## References
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- https://github.com/vshymanskyy/TinyGSM
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- https://lastminuteengineers.com/sim800l-gsm-module-arduino-tutorial/
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- [AT Datasheet](https://www.elecrow.com/wiki/images/2/20/SIM800_Series_AT_Command_Manual_V1.09.pdf)
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## setup
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### Hardware connection
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<img src="images/sim-800l-rpi3.jpg" width="600" height="450">
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### Disable serial console
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We will start by disabling serial console to enable communication between the pi and sim800l via serial0 .
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Open the terminal on your pi and run `sudo raspi-config`
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Select Interfaces → Serial
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Select No to the 1st prompt and Yes for the 2nd.
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## Usage examples
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```python
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from sim800l import SIM800L
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sim800l=SIM800L('/dev/serial0')
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```
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#### send sms
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```python
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sms="Hello there"
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#sim800l.send_sms(dest.no,sms)
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sim800l.send_sms('2547xxxxxxxx',sms)
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```
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#### read sms
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```python
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#sim800l.read_sms(id)
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sim800l.read_sms(id)
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```
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#### callback action
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```python
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def print_delete():
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#assuming the sim has no sms initially
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sms=sim800l.read_sms(1)
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print(sms)
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sim800l.delete_sms(1)
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sim800l.callback_msg(print_delete)
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while True:
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sim800l.check_incoming()
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```
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