The module is in a dormant state. When an emergency occurs, it switches to mode 0, transmits an alarm signal, and returns to sleep after waiting for a response. Operation process: M1M0=11 (sleep) –> generate a sudden alarm event –> M1M0=00 –> wait for the rising edge of AUX –> send serial port data to the module –> wait for the receiver to respond (as needed)- ->M1M0=11 (back to sleep)
Group polling (group wake-up)
Concept: Group all modules working on Bluetooth Module
the same channel into a group.
Advantage: When the host calls group 1, all modules in group 1 are woken up. Other groups will not be woken up, saving overall system power consumption.
Host: send group broadcast 1 (channel CH1), and group 1 members reply data with different delays according to ID. For example, group 1-1 will reply after 50ms, and group 1-2 will reply after 100ms.
Send group broadcast 2 (channel CH2), group 2 UART module members reply data with different delays according to ID. For example, group 2-1 will reply after 50ms, and group 2-2 will reply after 100ms. And so on.
Slave: Each slave has two elements of group (channel CH) and address (0-65536).
Tags: UART module
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