Hey. I would like to get some advice regarding the selection of the bluetooth module for the low power STM32 microcontroller. I also would like some general advice regarding the STM32 and bluetooth modules.
I need to send some data on my STM32 few times a day, therefore I thought the best selection would be the STM32L series since they have low power consumption.
I need to have BLE module connected to the STM32. The BLE is waiting for someone to connect and then it has to wake up the STM32.
I want to know:
1. For example if there are some external events that also need to wake up the STM32 such as movement detection. Is it better to wire this sensor to bluetooth module and once detected send wake up signal to the STM32? Since bluetooth module should always be ON (waiting for user to connect). Or is it better to connect the sensor straight to STM32 and somehow wake the microcontroller from low pow power mode when a movement is detected? Which one is more energy effiecient?
2.What BLE module would you advice me to use with the STM32. The only requirements are super low power usage and bluetooth 4.0 support.
I need to send some data on my STM32 few times a day, therefore I thought the best selection would be the STM32L series since they have low power consumption.
I need to have BLE module connected to the STM32. The BLE is waiting for someone to connect and then it has to wake up the STM32.
I want to know:
1. For example if there are some external events that also need to wake up the STM32 such as movement detection. Is it better to wire this sensor to bluetooth module and once detected send wake up signal to the STM32? Since bluetooth module should always be ON (waiting for user to connect). Or is it better to connect the sensor straight to STM32 and somehow wake the microcontroller from low pow power mode when a movement is detected? Which one is more energy effiecient?
2.What BLE module would you advice me to use with the STM32. The only requirements are super low power usage and bluetooth 4.0 support.