Multiprotocol intelligent gateway based on narrowband Internet of Things, and implementation method thereof
A narrow-band Internet of Things and intelligent gateway technology, applied in the field of low-power wide-area wireless communication, to achieve the effect of reducing the cost of use, facilitating control, and facilitating human-computer interaction
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[0047] In this embodiment, buttons, LEDs, and EEPROM (Electrically Erasable Programmable Read-Only Memory) are also arranged in the low-power unit, and the low-power controller 1-1 adopts the STM32L431CCTx microcontroller, which is connected through the serial interface USART1 The NB-IOT module is connected to the LoRa module through the serial interface USART2, connected to the high-performance controller 2-1 through the serial bus SPI1, connected to the signal acquisition and conditioning module through the serial bus SPI2, and through the analog input pin IN15 and the analog input pin IN16 monitors the power supply mode and battery status, through the serial bus I 2 The EEPROM connected to C2 is connected to the button for setting the operation mode of the low-power controller through the interrupt input pin PB2 and the interrupt input pin PA8, and the LED is connected to the digital output pin PB6 and the digital output pin PB7 to indicate the operating status , control th...
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