Proprietary low-level development.

[AlexNorokh]

We want use Nordic chips as the transfer medium for our data frames in mesh-like network.

So we don't need ATT,GATT,GAP,SDP,SMP and all high-level things.

As I can see from nrf52840 specification, we could set TX POWER, Mode and data rate, frequency by relevant registers. So, do it correct to say - all frequency hoping and TX Power adjustments is done in BLE stack by software means ??? 

In this case I can myself perform frequency hoping and power adjust - Isn't it ???

In the NRF5 SDK I see in folder examples/peripheral/radio  2 projects for transmitter and receiver - is it right scratchpad project for low level development ???

Meanwhile I searched setting TX power and mode and frequency, but don't find any, except in start config. Where these 3 parameters are manipulating ???

If we decide to make classic mesh - where are the most suitable example project ??? In Mesh SDK ??? Whitch one ???

[haakonsh]

So, do it correct to say - all frequency hoping and TX Power adjustments is done in BLE stack by software means ??? 

 Yes. 

In this case I can myself perform frequency hoping and power adjust - Isn't it ???

 Also, yes.
 

In the NRF5 SDK I see in folder examples/peripheral/radio  2 projects for transmitter and receiver - is it right scratchpad project for low level development ???

 Correct.

Meanwhile I searched setting TX power and mode and frequency, but don't find any, except in start config. Where these 3 parameters are manipulating ???

 TX power is the output power of the radio, in dBm. See TXPOWER for details. 

 Mode is the modulation scheme, see MODE for details. 

 Frequency is the frequency of the carrier, it controls what channel you use, depending on your protocol/modulation scheme. See FREQUENCY for details.

 

If we decide to make classic mesh - where are the most suitable example project ??? In Mesh SDK ??? Whitch one ???

 What is a classic mesh? You need to specify your needs or we can't really help you. What is your end-goal?

The Mesh SDK uses BLE Mesh, that in turn requires the SoftDevice to run.