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CWill.1
CWill.1
Visitor II
March 6, 2020
Question

Does the STM32WB offer a wake up from RF feature?

  • March 6, 2020
  • 1 reply
  • 802 views

I am looking for a controller that can operate on very low power and listen for RF messages. The RF message would wake up the controller. Is this possible on the STM32WB? I see that it can wake up from RTC events, but I do not want to rely on a timer. Any help or suggestions are appreciated.

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1 reply

C
Christophe Arnal
ST Employee
March 27, 2020

​Hello,

When BLE is operatiing, the lowest low power mode supported is Stop Mode 2. In that case, depending on the BLE activity, any messages received by the CPU2 running the BLE Stack will be reported to the CPU1 when required over IPCC. This will wakeup the CPU1 from Stop Mode2.

You may check the BLE_HeartRate example which by default is configured to run with the most optimized power consumption.

Regards.

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