TX Power configuration in nrf52832

RE: TX Power configuration in nrf52832

awneil — Fri, 22 Feb 2019 09:09:52 GMT

See my earlier reply:

devzone.nordicsemi.com/.../163723

RE: TX Power configuration in nrf52832

Sridhar Jonnavittula — Fri, 22 Feb 2019 07:12:09 GMT

Hi awneil,

After calling this function

uint32_t err_code = sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_adv_handle, 8);

APP_ERROR_CHECK(err_code);
advertising_start();

I tried this to check whether setting or not

C:\Users\THIS>nrfjprog --memrd 0x4000150C
0x4000150C: 00000000 |....|

Is this correct? The value should be 00000008 right.

Thanks,

Sridhar

RE: TX Power configuration in nrf52832

awneil — Thu, 03 Jan 2019 11:49:20 GMT

[quote userid="75527" url="~/f/nordic-q-a/42077/tx-power-configuration-in-nrf52832/163665"]register is not updated for new power level[/quote]

Should it be?

What does the Device Specification say?

As Simonr, you need to show how, exactly, you are reading it.

How to post source code:

RE: TX Power configuration in nrf52832

Simonr — Thu, 03 Jan 2019 10:01:08 GMT

I don't think I am following you. Are you saying the TX power level is set to your desired value, and that you want a confirmation? I still fail to see where you want to read this power level in that case.

Best regards,

Simon

RE: TX Power configuration in nrf52832

Hemabas — Thu, 03 Jan 2019 09:01:27 GMT

Hi simonr,

After using the sd_ble_gap_tx_power_set() for setting TX power level, power level increased and verified with the help of spectrum.

But register is not updated for new power level.

Thanks & regards

Hemabas

RE: TX Power configuration in nrf52832

Simonr — Thu, 03 Jan 2019 07:46:02 GMT

Hi Hemabas,

Where do you read the TX power level register? If the number you're reading is in MCP (Master Control Panel), it does not have any dependancy on the actual TX power level.

Have you experimented with various tx power levels and looked at your received signal strength (RSSI) to see if you get any difference there?

Best regards,

Simon

RE: TX Power configuration in nrf52832

Hemabas — Thu, 03 Jan 2019 06:30:51 GMT

Hi simonr,

I set the TX power level to 4 dBm with the help of sd_ble_gap_tx_power_set().

The function returns success, but when I am reading the TX power level register, it is shown 0dBm.

Why is it so?

RE: TX Power configuration in nrf52832

awneil — Wed, 02 Jan 2019 15:14:13 GMT

https://devzone.nordicsemi.com/f/nordic-q-a/37928/just-set-tx-power

RE: TX Power configuration in nrf52832

Simonr — Wed, 02 Jan 2019 14:30:57 GMT

Hi Hemabas,

To set the TX power level you have to call the function "sd_ble_gap_tx_power_set()", which is defined in ble_gap.h. The accepted values are: -40, -20, -16, -12, -8, -4, 0, and 4 dBm.

Best regards

Simon