User Manual

Note ：I –Input， O-Output, A-Analog
(About PE6 and PE7)
LoRa module is in dormant mode mostly. If MCU is interact with the module, it needs
to wake up LoRa module first and then send AT instruction to LoRa module.
Then PE7 (GPI04) is the pin to wake up LoRa module for MCU;Similarly, if the
module is interact with the external MCU( Send AT instruction ), it needs to wake up
external MCU (then send AT instruction ). PE6 is the corresponding pin.
PE6 and PE7 have “ready” state expression function except the wake up function.
The PE6 and PE7 are usually at high level signals and turn low when triggered. The
interaction should be restored to a high level signal.
(Details on the complete interaction process reference for the AT instruction )
3.3 Hardware size
21 IIC_SCL/PC1 O IIC SCL
22 AD/PC2 A/IO(PC2) ADC (Analog-digital conversion)