How to achieve long range?

[Alan Ajit]

Dear nordic,

I want to add long range in my application and also i want to set maximum power 

i used sdk 15 and example ble central and peripheral(relay)

Where i set to coded phy and maximum power ?

I need some help to achieve long range and setting maximum power to nrf52840

[Jared]

Hi

I suggest that you read our tutorial on "Testing Long Range with Nordic Solution" which you can find here.

Jared

[Alan Ajit]

Thanks for your replay i try to achieve long range

 first i changed primary phy to coded phy in the example mtu_throughput(because i want to board works initially in long range)  but code hangs and reset the board(error - invalid parameter) 

i want to work my application in long range when boards start running. i need some help 

is it any wrong in my procedure?

and how i set maximum  power in sdk 15?

[Jared]

Hi

Could you share your project files?

Jared

[Alan Ajit]

I am just tested Relay  example just change the phy (Coded) and power

changes:-

set power to 8 db

Change phy to coded:-

now application works.(no hang now)

but i didin't get long range 

is it any wrong in my procedure?

what changes are needed to get long range?

[Jared]

Hi 

Did you check the example code on the blogpost i linked in the previous reply? I suggest that you compare your code with the example code from the guide so that you can see what's missing. In the mtu_throughput example you should change the tx_phys , rx_phys, scan_phys to BLE_GAP_PHY_CODED to achieve long range in advertising and scanning. But again, all of this is done in the example code.

Jared 

[jawadk]

Hi, I have the same problem switching my ble_app_uart and ble_app_uart_c to long range , when i change the phys to work with coded instead of 1MBPS the function  sd_ble_gap_adv_set_configure in the peripheral code and the function sd_ble_gap_scan_start return error numbe 7 , I think this is error  NRF_ERROR_INVALID_PARAM.

how I fix this please ?

I tried to look at the example code on the blogpost you linked in the previous reply, but i didn't find the code there.

I am using the nRF5_SDK_15.2.0_9412b96 SDK and the s140_nrf52_6.1.1_softdevice

[Jared]

Hi,

NRF_ERROR_INVALID_PARAM is returned when one or more of the parameters that are passed doesn't satisfy the specification. You should check ble_scan params and the p_adv_report_buffer to the documentation.