STM32 + LoRa + Magnetometre

I only need software and circuit diagram for a project. The project should be like this: Data should be sent to a LoRa gateway via an 868Mhz LoRa module with an STM32L15x MCU. This must be an IOT sensor powered by a battery. The data to be transmitted to the LoRa Gateway will be data from a Magnetometer sensor and an IR transceiver. Also, the voltage of the Battery should be measured and sent via LoRa. normally the MCU should be in sleep mode and wake up every 15 seconds and check the IR sensor, if there is data, it should send it or it should wake up and send data according to the interrupt from the magnetometer.