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)

[fredmar]

a) It is for a project where everything is open hardware & open software (bitcoin harware wallet) b) We want to be able to make any kind of modification if needed c) I don't think every software should be open source, it is a choice people can make