ESP32 increase TX power

[MJU20]

I'm using a ESP Wrover with Flowcode 9.

Some features I set an disable via the ESP-IDF 4.1.CMD tool:

IDF.jpg (86.48 KiB) Viewed 797 times

But I can't find a way to increase TX power (or set the RX to more sensitive value).
Here => https://docs.espressif.com/projects/esp ... _wifi.html I found a way to set a different value for TX but don't know how to get this working in my FC project.

The

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esp_err_t esp_wifi_set_max_tx_power(int8_t power)

would do the trick:

esp_err_t esp_wifi_set_max_tx_power(int8_t power)

Set maximum transmitting power after WiFi start.

Attention

1. Maximum power before wifi startup is limited by PHY init data bin.
Attention

2. The value set by this API will be mapped to the max_tx_power of the structure wifi_country_t variable.
Attention

3. Mapping Table {Power, max_tx_power} = {{8, 2}, {20, 5}, {28, 7}, {34, 8}, {44, 11}, {52, 13}, {56, 14}, {60, 15}, {66, 16}, {72, 18}, {80, 20}}.
Attention

4. Param power unit is 0.25dBm, range is [8, 84] corresponding to 2dBm - 20dBm.
Attention

5. Relationship between set value and actual value. As follows: {set value range, actual value} = {{[8, 19],8}, {[20, 27],20}, {[28, 33],28}, {[34, 43],34}, {[44, 51],44}, {[52, 55],52}, {[56, 59],56}, {[60, 65],60}, {[66, 71],66}, {[72, 79],72}, {[80, 84],80}}.

Parameters

power – Maximum WiFi transmitting power.
Returns

ESP_OK: succeed

ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init

ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start

ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is out of range

Any help on this one?
Thanks already!

[BenR]

Hello,

If you go to your start menu and type ESP then you should get the ESP-IDF command prompt pop up, open this.

Next browse to the folder containing your flowcode compilation files. for example.

C:
cd c:\users\ben\desktop\esp_test

Next run the following command

idf.py menuconfig

That should allow you to configure the options for your specific project and should allow you to save for next time you compile to chip using Flowcode.

[MJU20]

Hey thank you Ben, but I've posted the screenshot just to let you know that I already use the ESP-IDF tool..

But I can't find a setting for the TX power for the Wifi..
That's the thing I want to change.

[MJU20]

In the SDKCONFIG there are settings:

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CONFIG_ESP32_PHY_MAX_WIFI_TX_POWER=20
CONFIG_ESP32_PHY_MAX_TX_POWER=20

But somebody warned me to not mess with setting directly in the SDKCONFIG.

By changing the value, my guess is that the power is increased?

[MJU20]

At last, I found it's setting in the PHY settings..

Component config -> PHY -> MAX TX Power...

Found it by reading where the TX power is in the SDKCONFIG file..

I wanted to share this for others to find rare settings..