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botletics / SIM7000-LTE-Shield

Botletics SIM7000 LTE CAT-M1/NB-IoT Shield for Arduino
https://www.botletics.com/products/sim7000-shield
GNU General Public License v3.0
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More details when writing to a Raspberry Pi #174

Open ksaye opened 4 years ago

ksaye commented 4 years ago

I have read https://github.com/botletics/SIM7000-LTE-Shield/wiki/Raspberry-Pi and https://github.com/botletics/SIM7000-LTE-Shield/wiki/Pinouts. Both contain great information.

I would like to wire this to a Raspberry Pi 3, and would not like to use the USB. If I understand the 'Raspberry-Pi' page, it is using it as a UART, so I only need TX, RX, GPIO (to pulse), 5V and GND from the Pi to the shield, and I am also using the LiPo battery that I want to charge from the Pi.

This being the case, would my wiring be as follows?

Purpose Pi 3 Botletics SIM7000A
Pi 5v TX to shield pin # 8 (TXD0) D10
Pi 5v RX from shield pin # 10 (RXD0) D11
Pi to turn on shield pin # 12 (GPIO18) D6
Pi 5v power to shield pin # 4 (+5V) J1 pin 4 (5v/Logic)
Pi Ground to shield pin # 6 (GND) J1 pin 3 (GND)

In my startup, I need to pulse on the Pi pin # 12 to turn the shield on.

Then if i enable the UART on the Pi (/boot/config.txt enable_uart=1), then what change do I make to get the QMI modem to look to /dev/ttyS0 vs the blog which says /dev/ttyUSB2?

Are there any modifications I need to do to my v6 shield and will this charge the battery?

ksaye commented 4 years ago

@botletics

botletics commented 4 years ago

Looks like you swapped TX and RX there. Pin D10 is the shield's TX which should be the RPi's RX, and D11 is the shield's RX which should be the RPi's TX.

As long as you have 5V on the shield's "5V/LOGIC" pin yes, it will charge the LiPo battery.

botletics commented 4 years ago

Unfortunately I'm not really a RPi user lol. Perhaps someone else can answer your RPi questions.