search

espressif / esp-idf

Espressif IoT Development Framework. Official development framework for Espressif SoCs.
Apache License 2.0
13.46k stars 7.25k forks source link

[TW#28011] How do I find out ESP32 transceiver state in BLE mode? (IDFGH-839) #2853

Open MegaGarynych opened 5 years ago

MegaGarynych commented 5 years ago

Hi all, Some time ago I have asked question https://github.com/espressif/esp-idf/issues/2768

We are going to use external RF power amplifier. We need to know which state ESP32 RF transceiver has currently (transmit or receive) so we could change RF amplifier mode. Does esp-idf has some functions to find out ESP32 transceiver state?

Code example from @Alvin1Zhang works as we need. But now we interested to use this solution in BLE mode. Does esp-idf has some functions to find out ESP32 transceiver state in BLE mode?

Thanks, Roman

Alvin1Zhang commented 5 years ago

Hi, We need to add a new API, do you have any requirements on the timeline and specific IDF version for this feature? Thanks. @MegaGarynych

MegaGarynych commented 5 years ago

Hi @Alvin1Zhang, thanks for your reply.

In total, our project need contains WIFI and BLE modes at the same time with connected external RF power amplifier to increase the operation distance.

We plan to buy a small sample set of ESP32 chips for our project and need to be sure that function of
find out ESP32 WIFI/BLE transceiver state for control exernal RF amplifier mode is present (or will implement soon) in esp-idf.

If it is imposible to use one RF power amplifier in WIFI and BLE modes at the same time, please help with some code examples for using RF power amplifier in only BLE mode (in WIFI mode it's works well).

We have no any specific requirements on IDF version etc.

Thanks, Roman.

Alvin1Zhang commented 5 years ago

@MegaGarynych Sorry that get back to you so late, would you share if your issue has been resolved? Thanks.

hdkim commented 5 years ago

Hi

@Alvin1Zhang : I have same issue, I need a api for ESP32 transceiver state in BLE mode.

Do you have any plan for it?

Thanks

hdkim commented 5 years ago

Hi, @Alvin1Zhang

Is there any progress?

Alvin1Zhang commented 5 years ago

@hdkim Hi, thanks for the feedback. Have tracked internally and will update if any. Thanks.

Alvin1Zhang commented 5 years ago

@hdkim Hi, sorry for the late feedback. Would you please try using API esp_tx_state_out (please make sure that PHY version >= 4090)? Thanks.

Alvin1Zhang commented 5 years ago

@hdkim Hi, do you have time to have a try? Thanks.

hdkim commented 5 years ago

@Alvin1Zhang Hi, Thank you for your feedback.

Now I am trying it, But I can't find any document about (esp_tx_state_out).

Can you share a link that I can refer to with me?

Thanks

Alvin1Zhang commented 5 years ago

@hdkim Hi, thanks for the feedback. Would you please help check whether your PHY version >= 4090? Thanks.

kmmaran commented 5 years ago

Hi @Alvin1Zhang @hdkim do you guys find a solution for this. I have ESP32 BLE design for external RF module but can't make it work without the state info. Can you please share what is the progress for this. Thank you.

pk7639 commented 2 years ago

Hi folks, did anyone get any traction with this? I found esp_tx_state_out() in libphy.a, but I've no idea how it works...

jack0c commented 2 years ago

It is not timely to use API to get the transceiver state. If I understand correctly, there are two different problems:

  1. switch between antennas
  2. use external RF PA, maybe LNA also

For the first problem, it depends on the feedback from peer devices, we use RSSI as estimating info in a period, in this case we can use APIs to switch between antennas. There are still some small design and document issues in multi-antenna support. For the second problem, it should be down by this, call an API to configure the GPIO control of external PA(or/and LNA), hardware can done the switch automatically.

copercini commented 1 year ago

yeah esp_tx_state_out() exists in libphy.a, it would help a lot if Espressif add a header for this function here: https://github.com/espressif/esp-idf/blob/master/components/esp_phy/include/phy.h

I'm also interested in use Classic Bluetooth with an external power amplifier

xyzzy42 commented 9 months ago

Came across this looking for a way to know when BLE does a TX, for an RF coexistence system with an external RF device that is not Wifi or BT.

After disassembling the code for ESP32-S3, esp_tx_state_out() has no parameters and is very simple. It just does this:

void esp_tx_state_out(void) {
    tx_state_set(1);
}

So what does tx_state_set() do? This function is also in phy lib on ESP32-S3 but I think it is in ROM on some processors. It looks like it pokes around in four registers in the reserved 0x6000_6xxx peripheral memory area. Probably secret PHY registers. There is a single argument to tx_state_set() and it is a 2-bit field that is put into some registers.

Maybe this is supposed configure GPIO control of external PA? But I see nothing to control which GPIOs are used. esp_tx_state_out() has no arguments, so it's not there. Neither esp_tx_state_out() nor tx_state_set() have any other parameters, or use any global variables, or call other functions, which could be the way the GPIO(s), if they exist, are configured. So it's still a great mystery how this can be used.

xiongweichao commented 8 months ago

Hi @xyzzy42 ,

Please provide the chip used and the idf commit. I will provide you with a patch.

Thanks

jack0c commented 8 months ago

Came across this looking for a way to know when BLE does a TX, for an RF coexistence system with an external RF device that is not Wifi or BT.

After disassembling the code for ESP32-S3, esp_tx_state_out() has no parameters and is very simple. It just does this:

void esp_tx_state_out(void) {
    tx_state_set(1);
}

So what does tx_state_set() do? This function is also in phy lib on ESP32-S3 but I think it is in ROM on some processors. It looks like it pokes around in four registers in the reserved 0x6000_6xxx peripheral memory area. Probably secret PHY registers. There is a single argument to tx_state_set() and it is a 2-bit field that is put into some registers.

Maybe this is supposed configure GPIO control of external PA? But I see nothing to control which GPIOs are used. esp_tx_state_out() has no arguments, so it's not there. Neither esp_tx_state_out() nor tx_state_set() have any other parameters, or use any global variables, or call other functions, which could be the way the GPIO(s), if they exist, are configured. So it's still a great mystery how this can be used.

If you want ESP32S3+external RF device. Please check the external coexistence APIs https://github.com/espressif/esp-idf/blob/master/components/esp_coex/include/esp_coexist.h (@xiongweichao check why they are not in API reference). The software only set priorities on different time slots, and the coexistence arbitration will be controlled by hardware automatically. However, if you want to do the coexistence well, you still need knowledge about the external RF device. There is an ESP32S3+ESP32H2 solution as an example. Maybe @chshu can help more on this.

chshu commented 8 months ago

The general ESP external coexistenace feature is introduced in this doc: https://www.espressif.com.cn/sites/default/files/documentation/external_coexistence_design_en.pdf

The feature is enabled in our ESP Thread Border router solution, in order to reduce RF interference between Wi-Fi and 802.15.4 (Thread) on 2.4 GHz:

You may refer to this link on how to enable it: Enable external coexistence

xyzzy42 commented 7 months ago

Thank you for links to the wifi coexistence documents. However, I already found these while searching for information. I'm interested in coexistence with ESP-BLE, and this issue is about BLE transmitter status, and everything written about external coexistence indicates it is only related to ESP-WIFI.

xiongweichao commented 7 months ago

@xyzzy42 Do you want to know when BLE is in tx through the level of GPIO? If so, please provide the idf commit id you are currently using, and I will provide you with a test version. thanks！

xyzzy42 commented 7 months ago

@xyzzy42 Do you want to know when BLE is in tx through the level of GPIO? If so, please provide the idf commit id you are currently using, and I will provide you with a test version. thanks！

Yes, that would useful, thank you. I'm using commit 8171b22c40f39a75cd0db62165e7ef017f78c572 right now.

xiongweichao commented 7 months ago

@xyzzy42 Please try this patch to see if it meets your needs. libbtdm_app.a patch:$IDF_PATH/components/bt/controller/lib_esp32c3_family/esp32s3 For usage instructions, please refer to Wi-Fi Multiple Antennas. BTW, some GPIOs may not be used.

// BT antnenna diversity addition. This function is called after Bluetooth initialization. 
static int configure_antennas(void)
{
    esp_bt_ant_gpio_config_t gpio_config = {0};
    gpio_config.gpio_cfg[0].gpio_select= 1;
    gpio_config.gpio_cfg[0].gpio_num= 18;
    gpio_config.gpio_cfg[1].gpio_select = 1;
    gpio_config.gpio_cfg[1].gpio_num = 17;
    esp_err_t err = esp_bt_set_ant_gpio(&gpio_config);
    if (err) {
        printf("%s Setting antenna GPIO failed.\n", __func__);
        return err;
    }
    esp_bt_ant_config_t ant_config = {
        .rx_ant_mode = ESP_BT_ANT_MODE_ANT0,
        .rx_ant_default = ESP_BT_ANT_ANT0,
        .tx_ant_mode = ESP_BT_ANT_ANT1,
        .enabled_ant0 = 1,
        .enabled_ant1 = 2
    };
    err = esp_bt_set_ant(&ant_config);
    if (err) {
        printf("%s Setting antenna failed.\n", __func__);
    }

    return err;
}

set_ant_patch_20240223.txt libbtdm_app_2b80152.txt

xiongweichao commented 5 months ago

@xyzzy42 Please try this patch to see if it meets your needs. libbtdm_app.a patch:$IDF_PATH/components/bt/controller/lib_esp32c3_family/esp32s3 For usage instructions, please refer to Wi-Fi Multiple Antennas. BTW, some GPIOs may not be used.

// BT antnenna diversity addition. This function is called after Bluetooth initialization. 
static int configure_antennas(void)
{
    esp_bt_ant_gpio_config_t gpio_config = {0};
    gpio_config.gpio_cfg[0].gpio_select= 1;
    gpio_config.gpio_cfg[0].gpio_num= 18;
    gpio_config.gpio_cfg[1].gpio_select = 1;
    gpio_config.gpio_cfg[1].gpio_num = 17;
    esp_err_t err = esp_bt_set_ant_gpio(&gpio_config);
    if (err) {
        printf("%s Setting antenna GPIO failed.\n", __func__);
        return err;
    }
    esp_bt_ant_config_t ant_config = {
        .rx_ant_mode = ESP_BT_ANT_MODE_ANT0,
        .rx_ant_default = ESP_BT_ANT_ANT0,
        .tx_ant_mode = ESP_BT_ANT_ANT1,
        .enabled_ant0 = 1,
        .enabled_ant1 = 2
    };
    err = esp_bt_set_ant(&ant_config);
    if (err) {
        printf("%s Setting antenna failed.\n", __func__);
    }

    return err;
}

set_ant_patch_20240223.txt libbtdm_app_2b80152.txt

This feature has been merged into the master branch. Reference documentation https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-guides/phy.html