set TX power nrf52840 PCA10059 SDK 15.3 S140 program hangs at APP_ERROR _CHECK

[melt]

Good day

I converted a Central UART example. I thought I would experiment with the "sd_ble_gap_tx_power_set()" function to see how it works.

When I include the following

 err_code= sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV,BLE_GAP_ADV_SET_HANDLE_NOT_SET,4); //tx_power	Radio transmit power in dBm (accepted values are -40, -30, -20, -16, -12, -8, -4, 0, and 4 dBm).
      APP_ERROR_CHECK(err_code);

My program just hangs at APP_ERROR_CHECK. No error code or assert.

If I comment it out it runs but I can see the sd_ble_gap_tx_power_set() has no effect, so im obviosuly missing something.

Any idea on what would cause it. I set a breakpoint at APP_ERROR_CHECK  err_code =0x00000002

I have also tried to set a breakpoint in app_error_weak.c to see p_info but my program does not reach there.

Any advice would be appreciated.

[Jimmy Wong]

HI,

you can refer to my example (https://github.com/jimmywong2003/nrf52-ble5-long-range-demo).

I set the TX power on both peripheral and central role.

[melt]

thanks, Jimmy, will have a look.

[Sigurd]

melt said:

I set a breakpoint at APP_ERROR_CHECK  err_code =0x00000002

Error code 2 is NRF_ERROR_SOFTDEVICE_NOT_ENABLED. Make sure that you set TX power after the softdevice is enabled.