nRF51822 : open source firmware ?

[fredmar]

Hi, I am looking for a Bluetooth Low Energy Soc based solution like nRF51822, but I'd like to have an open source firmware solution...

Do you have that kind of solution, nRF51822 solution or another ? (BLE and open source firmware)

[Carles]

Mynewt already runs natively on the nRF51 and nRF52 AFAIK