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nrf51822 ble s110 scan another device get RSSI value

Peter

Hi everyone : I have some questions about nrf51822 ble S110 ,I have two ble device ,both device used S110,is it possible use the first device to scan the second device to get the RSSI value?

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  • 0

    @Peter: The S110 (peripheral) stack is not made to be able to scan for a device. You can think of having one device running S120 (central stack) to scan for the other device running S110. If you want the central device be able to be peripheral also, you can think of using S130 (central+peripheral stack).

    Alternativelly, if you don't want to use S130/S120, you can use S110 and access radio directly using timeslot API to scan for packet with S110, but it's more complicated. You can have a look at this example.

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  • 0

    @Peter: The S110 (peripheral) stack is not made to be able to scan for a device. You can think of having one device running S120 (central stack) to scan for the other device running S110. If you want the central device be able to be peripheral also, you can think of using S130 (central+peripheral stack).

    Alternativelly, if you don't want to use S130/S120, you can use S110 and access radio directly using timeslot API to scan for packet with S110, but it's more complicated. You can have a look at this example.

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  • 0 in reply to Hung Bui

    @Hung Bui : I have some question want to ask 1.if i use S130 (central+peripheral stack) device can be switch central or peripheral what i want ? 2.is S130 (central+peripheral stack)power consumption higher than S110? 3.radio method is use first device's RF to scan second device's RF to get second device's RSSI value ? what different between BLE RSSI and RF RSSI ? thanks

  • 0 in reply to Hung Bui
    1. You can switch between central or peripheral, or you can do both at the same time.
    2. If it does the same task as S110 then the current consumption should be the same
    3. Please provide the topology, what is first device, second device, their roles (connected or simply broadcasting ?)
    4. There should be no different if the setting of proprietary RF are the same with BLE.
  • 0 in reply to Hung Bui

    @Hung Bui : 1.so in S130 device can be connected by smartphone and it also can scan another devices in the same time? 3.i have two device i want to know their distance(use rssi) without connect and both device are peripheral

  • 0 in reply to Hung Bui
    1. Yes, it can
    2. To be able to let other device detect and read RSSI one must advertise. To do that you can use S130 that can advertise and scan at the same time. Or you can use S110 and timeslot API so that you can do scanning manually. Here is an example.
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