How to use NRF gostudio to flash the nrf51822 RBL dongle? and what is segger ? do i need it

[sofi_mukhtar]

i have RBL nrf51822 ble and i want to try it with BLE Sniffer. i flashed the nrf sniffer hex file by drag and drop to my dongle but it doesn't show anything. only it shows "sniffer ready on COM15" and those commands

[sofi_mukhtar]

I get sniffer ready and connected on com15 but it doesnt show the ble device in available device..

[sofi_mukhtar]

U wrote "the devices u sniff should be advertising" . Which devices? U mean rbl ble dongle?

[Sigurd]

No, when the rbl ble dongle is running the sniffer firmware, it is used to sniff BLE packets from other BLE devices. With the sniffer firmware, the rbl dongle is a passive device that is sniffing BLE packet from other BLE devices. If there is no BLE devices that are advertising BLE packets, then no devices will show up in the "Available devices" section.