preadressing

[pavan]

Hello all,

I started working with nrf51 series on mesh networking as i am new to this i want know whether the chipsets will come with preadressed? as it require to adress the nodes in mesh technology?

[endnode]

Sure, you can read FICR region during FW loading in manufacturing facility and then print it on it or do whatever else you need to do (track it when distributed, fill into some back-end database, provision as data blob back to devices over JTAG/SWD...)

[pavan]

Hello endnode,

Thanks for the information, But i dint exactly got your point can you please brief this a little bit more?hope you dont mind

[endnode]

Just search the forum, here is one of several explanations of how Device Address work on nRF5x chips. FICR->DEVICEADDR[0] and [1] contain 48 bits which are by default used after reset for on-radio address (sometimes called MAC or Adv. Address). And because FICR is mapped to NVM memory space (it actually is kind-of ROM region) you can read it from within the application as well as over JTAG/SWD. If you don't like pseudo-random numbers generated by Nordic during chip packaging you can use UICR memory region to provide your own data and later use them inside your FW to set the address field.