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https://github.com/espressif/esp-idf
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Merge branch 'docs/update_multi_antenna_switch_docs_v5.0' into 'release/v5.0'
Docs/update multi antenna switch docs v5.0(Backport v5.0) See merge request espressif/esp-idf!25819
This commit is contained in:
Jiang Jiang Jian
commit
aedd7fe002
@ -2041,12 +2041,12 @@ If the RX antenna mode is :cpp:enumerator:`WIFI_ANT_MODE_AUTO`, the default ante
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Some limitations need to be considered:
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- The TX antenna can be set to :cpp:enumerator:`WIFI_ANT_MODE_AUTO` only if the RX antenna mode is :cpp:enumerator:`WIFI_ANT_MODE_AUTO`, because TX antenna selecting algorithm is based on RX antenna in :cpp:enumerator:`WIFI_ANT_MODE_AUTO` type.
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- When the TX antenna mode or RX antenna mode is configured to :cpp:enumerator:`WIFI_ANT_MODE_AUTO` the switching mode will easily trigger the switching phase, as long as there is deterioration of the RF signal. So in situations where the RF signal is not stable, the antenna switching will occur frequently, resulting in an RF performance that may not meet expectations.
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- Currently, Bluetooth® does not support the multiple antennas feature, so please do not use multiple antennas related APIs.
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Following is the recommended scenarios to use the multiple antennas:
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- In Wi-Fi mode :cpp:enumerator:`WIFI_MODE_STA`, both RX/TX antenna modes are configured to :cpp:enumerator:`WIFI_ANT_MODE_AUTO`. The Wi-Fi driver selects the better RX/TX antenna automatically.
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- - The RX antenna mode is configured to :cpp:enumerator:`WIFI_ANT_MODE_AUTO`. The TX antenna mode is configured to :cpp:enumerator:`WIFI_ANT_MODE_ANT0` or :cpp:enumerator:`WIFI_ANT_MODE_ANT1`. The applications can choose to always select a specified antenna for TX, or implement their own TX antenna selecting algorithm, e.g., selecting the TX antenna mode based on the channel switch information.
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- The applications can always choose to select a specified antenna or implement their own antenna selecting algorithm, e.g., selecting the antenna mode based on the information collected by the application. Refer to ESP-IDF example :idf_file:`examples/wifi/antenna/README.md` for the antenna selecting algorithm design.
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- Both RX/TX antenna modes are configured to WIFI_ANT_MODE_ANT0 or WIFI_ANT_MODE_ANT1.
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@ -2041,12 +2041,12 @@ Wi-Fi 多根天线
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有一些限制情况需要考虑：
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- 因为发送数据天线基于 WIFI_ANT_MODE_AUTO 类型的接收数据天线选择算法，只有接收数据的天线模式为 WIFI_ANT_MODE_AUTO 时，发送数据天线才能设置为 WIFI_ANT_MODE_AUTO。
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- 接收或者发送天线模式配置为 WIFI_ANT_MODE_AUTO 时，只要存在 RF 信号的恶化，很容易触发天线切换。如果射频信号不稳定，天线会频繁切换，使得总的射频性能无法达到预期效果。
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- 目前，Bluetooth® 不支持多根天线功能，请不要使用与多根天线有关的 API。
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推荐在以下场景中使用多根天线：
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- Wi-Fi 模式 WIFI_MODE_STA 下，接收/发送数据的天线模式均配置为 WIFI_ANT_MODE_AUTO。Wi-Fi 驱动程序自动选择更好的接收/发送数据天线。
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- 接收数据天线模式配置为 WIFI_ANT_MODE_AUTO。发送数据的天线模式配置为 WIFI_ANT_MODE_ANT0 或 WIFI_ANT_MODE_ANT1。应用程序可以始终选择指定的天线用于发送数据，也可以执行自身发送数据天线选择算法，如根据信道切换信息选择发送数据的天线模式等。
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- 应用程序可以始终选择指定的天线，也可以执行自身天线选择算法，如根据应用程序收集的信息来选择天线模式等。请参考 IDF 示例 :idf_file:`examples/wifi/antenna/README.md` 来设计天线选择算法。
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- 接收/发送数据的天线模式均配置为 WIFI_ANT_MODE_ANT0 或 WIFI_ANT_MODE_ANT1。
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6
examples/wifi/antenna/CMakeLists.txt
Normal file
6
examples/wifi/antenna/CMakeLists.txt
Normal file
@ -0,0 +1,6 @@
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# The following five lines of boilerplate have to be in your project's
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# CMakeLists in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.16)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(wifi_antenna)
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136
examples/wifi/antenna/README.md
Normal file
136
examples/wifi/antenna/README.md
Normal file
@ -0,0 +1,136 @@
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| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-S2 | ESP32-S3 |
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| ----------------- | ----- | -------- | -------- | -------- | -------- |
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# Wi-Fi antenna soft switch Example
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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This example demonstrates how to use multi-antenna software switching for ESP.
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## How to use example
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### Configure the project
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Open the project configuration menu (`idf.py menuconfig`).
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In the `Example Configuration` menu:
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* Set the Wi-Fi configuration.
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* Set `WiFi SSID`.
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* Set `WiFi Password`.
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Optional: If you need, change the other options according to your requirements.
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### Build and Flash
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Build the project and flash it to the board, then run the monitor tool to view the serial output:
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for all the steps to configure and use the ESP-IDF to build projects.
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* [ESP-IDF Getting Started Guide on ESP32](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-C2](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c2/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-C3](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-C6](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c6/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-S2](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-S3](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/get-started/index.html)
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## Example Output
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Note that the output, in particular the order of the output, may vary depending on the environment.
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Console output if station connects to AP successfully:
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```
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I (589) multi-antenna example: ESP_WIFI_MODE_STA
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I (599) wifi: wifi driver task: 3ffc08b4, prio:23, stack:3584, core=0
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I (599) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
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I (599) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
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I (629) wifi: wifi firmware version: 2d94f02
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I (629) wifi: config NVS flash: enabled
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I (629) wifi: config nano formating: disabled
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I (629) wifi: Init dynamic tx buffer num: 32
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I (629) wifi: Init data frame dynamic rx buffer num: 32
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I (639) wifi: Init management frame dynamic rx buffer num: 32
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I (639) wifi: Init management short buffer num: 32
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I (649) wifi: Init static rx buffer size: 1600
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I (649) wifi: Init static rx buffer num: 10
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I (659) wifi: Init dynamic rx buffer num: 32
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I (759) phy: phy_version: 4180, cb3948e, Sep 12 2019, 16:39:13, 0, 0
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I (769) wifi: mode : sta (30:ae:a4:d9:bc:c4)
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I (769) multi-antenna example: wifi_init_sta finished.
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I (889) wifi: new:<6,0>, old:<1,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (889) wifi: state: init -> auth (b0)
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I (899) wifi: state: auth -> assoc (0)
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I (909) wifi: state: assoc -> run (10)
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I (939) wifi: connected with #!/bin/test, aid = 1, channel 6, BW20, bssid = ac:9e:17:7e:31:40
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I (939) wifi: security type: 3, phy: bgn, rssi: -68
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I (949) wifi: pm start, type: 1
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I (1029) wifi: AP's beacon interval = 102400 us, DTIM period = 3
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I (2089) esp_netif_handlers: sta ip: 192.168.77.89, mask: 255.255.255.0, gw: 192.168.77.1
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I (2089) multi-antenna example: got ip:192.168.77.89
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I (2089) multi-antenna example: connected to ap SSID:myssid password:mypassword
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I (12268) multi-antenna example: GPIO: [0].pin = 21, [1].pin = 22
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I (18568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (19068) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (19568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (20068) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (20568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (21068) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (21568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (22068) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (22568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (23068) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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I (23568) multi-antenna example: rx mode = 1, tx mode = 1, ant0_en = 0, ant1_en = 1
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```
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Console output if the station failed to connect to AP:
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```
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I (589) multi-antenna example: ESP_WIFI_MODE_STA
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I (599) wifi: wifi driver task: 3ffc08b4, prio:23, stack:3584, core=0
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I (599) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
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I (599) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
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I (629) wifi: wifi firmware version: 2d94f02
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I (629) wifi: config NVS flash: enabled
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I (629) wifi: config nano formating: disabled
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I (629) wifi: Init dynamic tx buffer num: 32
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I (629) wifi: Init data frame dynamic rx buffer num: 32
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I (639) wifi: Init management frame dynamic rx buffer num: 32
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I (639) wifi: Init management short buffer num: 32
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I (649) wifi: Init static rx buffer size: 1600
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I (649) wifi: Init static rx buffer num: 10
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I (659) wifi: Init dynamic rx buffer num: 32
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I (759) phy: phy_version: 4180, cb3948e, Sep 12 2019, 16:39:13, 0, 0
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I (759) wifi: mode : sta (30:ae:a4:d9:bc:c4)
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I (769) multi-antenna example: wifi_init_sta finished.
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I (889) wifi: new:<6,0>, old:<1,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (889) wifi: state: init -> auth (b0)
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I (1889) wifi: state: auth -> init (200)
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I (1889) wifi: new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (1889) multi-antenna example: retry to connect to the AP
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I (1899) multi-antenna example: connect to the AP fail
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I (3949) multi-antenna example: retry to connect to the AP
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I (3949) multi-antenna example: connect to the AP fail
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I (4069) wifi: new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (4069) wifi: state: init -> auth (b0)
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I (5069) wifi: state: auth -> init (200)
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I (5069) wifi: new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (5069) multi-antenna example: retry to connect to the AP
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I (5069) multi-antenna example: connect to the AP fail
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I (7129) multi-antenna example: retry to connect to the AP
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I (7129) multi-antenna example: connect to the AP fail
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I (7249) wifi: new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (7249) wifi: state: init -> auth (b0)
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I (8249) wifi: state: auth -> init (200)
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I (8249) wifi: new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
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I (8249) multi-antenna example: retry to connect to the AP
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I (8249) multi-antenna example: connect to the AP fail
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I (10299) multi-antenna example: connect to the AP fail
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I (10299) multi-antenna example: Failed to connect to SSID:myssid, password:mypassword
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```
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## Troubleshooting
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For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
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@ -0,0 +1,3 @@
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idf_component_register(SRCS "antenna_switch.c"
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INCLUDE_DIRS "./include"
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REQUIRES esp_wifi)
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@ -0,0 +1,304 @@
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/*
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* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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/* Antenna soft switching Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "freertos/queue.h"
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#include "esp_wifi.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "antenna_switch.h"
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#define SOFT_SWITCHING_NAME "three ant auto"
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#define SOFT_SWITCHING_PRIORITY 4
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#define SOFT_SWITCHING_STACK 4096
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#define WAIT_TIME 60 /**< unit 100ms*/
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#define MONITOR_TIME 200 /**< unit 10ms*/
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#define QUEUE_LENGTH_RSSI_SINGLE 10
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#define QUEUE_LENGTH_RSSI_SUM 25
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#define RSSI_SINGLE_SIZE sizeof(int8_t)
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#define RSSI_SUM_SIZE sizeof(int16_t)
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#define RSSI_KD 0.01
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static const char *TAG = "ANTENNA_SWITCH_EXAMPLE";
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static wifi_antenna_auto_switch_config_t wifi_three_ant_auto_get_config = {
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.ant_num = ANT_TOTAL_THREE,
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.ant_zero = 0,
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.ant_one = 1,
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.ant_two = 3,
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.ant_switch = 35
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};
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static TaskHandle_t antenna_task_handle;
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/**< Select the optimal antenna*/
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static void antenna_switch_function(const wifi_antenna_auto_switch_config_t *config)
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{
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wifi_ant_config_t wifi_ant_config;
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wifi_ap_record_t wifi_ap_record;
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int16_t rssi_ant0 = INT16_MIN, rssi_ant1 = INT16_MIN, rssi_ant2 = INT16_MIN, rssi_max, rssi_min;
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/**< Monitor antenna zero signal strength*/
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wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT0;
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wifi_ant_config.rx_ant_default = WIFI_ANT_MODE_ANT0;
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wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT0;
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wifi_ant_config.enabled_ant0 = config->ant_zero;
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wifi_ant_config.enabled_ant1 = config->ant_one;
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ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
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/**< Wait for parameters to take effect*/
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vTaskDelay(100/portTICK_PERIOD_MS);
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while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
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/**< can't find AP*/
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
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rssi_ant0 = 0;
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rssi_max = wifi_ap_record.rssi;
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rssi_min = wifi_ap_record.rssi;
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for(int i = 0; i < MONITOR_TIME; i++) {
|
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while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
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/**< can't find AP*/
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
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rssi_max = rssi_max > wifi_ap_record.rssi ? rssi_max : wifi_ap_record.rssi;
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rssi_min = rssi_min < wifi_ap_record.rssi ? rssi_min : wifi_ap_record.rssi;
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rssi_ant0 += wifi_ap_record.rssi;
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vTaskDelay(10/portTICK_PERIOD_MS);
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}
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rssi_ant0 = rssi_ant0 - rssi_max - rssi_min;
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ESP_LOGD(TAG, "The signal strength of the antenna zero :%d", rssi_ant0);
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/**< Monitor antenna one signal strength*/
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wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT1;
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wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT1;
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ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
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/**< Wait for parameters to take effect*/
|
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vTaskDelay(100/portTICK_PERIOD_MS);
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while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
|
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/**< can't find AP*/
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
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rssi_ant1 = 0;
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rssi_max = wifi_ap_record.rssi;
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rssi_min = wifi_ap_record.rssi;
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for(int i = 0; i < MONITOR_TIME; i++) {
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while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
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/**< can't find AP*/
|
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
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rssi_max = rssi_max > wifi_ap_record.rssi ? rssi_max : wifi_ap_record.rssi;
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rssi_min = rssi_min < wifi_ap_record.rssi ? rssi_min : wifi_ap_record.rssi;
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rssi_ant1 += wifi_ap_record.rssi;
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vTaskDelay(10/portTICK_PERIOD_MS);
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}
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rssi_ant1 = rssi_ant1 - rssi_max - rssi_min;
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ESP_LOGD(TAG, "The signal strength of the antenna one :%d", rssi_ant1);
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if(config->ant_num == ANT_TOTAL_THREE) {
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/**< Monitor antenna two signal strength*/
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wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT1;
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wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT1;
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wifi_ant_config.enabled_ant1 = config->ant_two;
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ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
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/**< Wait for parameters to take effect*/
|
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vTaskDelay(100/portTICK_PERIOD_MS);
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while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
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/**< can't find AP*/
|
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
|
||||
rssi_ant2 = 0;
|
||||
rssi_max = wifi_ap_record.rssi;
|
||||
rssi_min = wifi_ap_record.rssi;
|
||||
for(int i = 0; i < MONITOR_TIME; i++) {
|
||||
while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
|
||||
/**< can't find AP*/
|
||||
vTaskDelay(100/portTICK_PERIOD_MS);
|
||||
}
|
||||
rssi_max = rssi_max > wifi_ap_record.rssi ? rssi_max : wifi_ap_record.rssi;
|
||||
rssi_min = rssi_min < wifi_ap_record.rssi ? rssi_min : wifi_ap_record.rssi;
|
||||
rssi_ant2 += wifi_ap_record.rssi;
|
||||
vTaskDelay(10/portTICK_PERIOD_MS);
|
||||
}
|
||||
rssi_ant2 = rssi_ant2 - rssi_max - rssi_min;
|
||||
ESP_LOGD(TAG, "The signal strength of the antenna two :%d", rssi_ant2);
|
||||
}
|
||||
|
||||
if(rssi_ant0 >= rssi_ant1 && rssi_ant0 >= rssi_ant2) {
|
||||
/**< antenna zero signal strength best*/
|
||||
ESP_LOGD(TAG, "Antenna soft switching selection ant0");
|
||||
wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT0;
|
||||
wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT0;
|
||||
wifi_ant_config.enabled_ant0 = config->ant_zero;
|
||||
wifi_ant_config.enabled_ant1 = config->ant_one;
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
|
||||
}
|
||||
|
||||
if(rssi_ant1 > rssi_ant0 && rssi_ant1 > rssi_ant2) {
|
||||
/**< antenna one signal strength best*/
|
||||
ESP_LOGD(TAG, "Antenna soft switching selection ant1");
|
||||
wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT1;
|
||||
wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT1;
|
||||
wifi_ant_config.enabled_ant0 = config->ant_zero;
|
||||
wifi_ant_config.enabled_ant1 = config->ant_one;
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
|
||||
}
|
||||
|
||||
if(rssi_ant2 > rssi_ant0 && rssi_ant2 > rssi_ant1) {
|
||||
/**< antenna two signal strength best*/
|
||||
ESP_LOGD(TAG, "Antenna soft switching selection ant2");
|
||||
wifi_ant_config.rx_ant_mode = WIFI_ANT_MODE_ANT1;
|
||||
wifi_ant_config.tx_ant_mode = WIFI_ANT_MODE_ANT1;
|
||||
wifi_ant_config.enabled_ant0 = config->ant_zero;
|
||||
wifi_ant_config.enabled_ant1 = config->ant_two;
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ant(&wifi_ant_config));
|
||||
}
|
||||
}
|
||||
|
||||
/**< Kalman filter function*/
|
||||
static int16_t KalmanFilter(int16_t inData)
|
||||
{
|
||||
static float kalman = 0;
|
||||
static float p = 10;
|
||||
/**< Process noise*/
|
||||
float q = 0.01;
|
||||
/**< Measurement noise*/
|
||||
float r = 0.2;
|
||||
/**< Kalman gain*/
|
||||
float kg = 0;
|
||||
|
||||
p += q;
|
||||
/**< Calculate the Kalman gain*/
|
||||
kg = p / ( p + r );
|
||||
/**< Calculate the estimated value of this filtering*/
|
||||
kalman = kalman + (kg * (inData - kalman));
|
||||
/**< Updated measurement variance*/
|
||||
p = (1 - kg) * p;
|
||||
|
||||
return (int16_t)(kalman + 0.5);
|
||||
}
|
||||
|
||||
static void antenna_soft_switching_task(void *arg)
|
||||
{
|
||||
QueueHandle_t xQueue_rssi_single_handle, xQueue_rssi_sum_handle;
|
||||
wifi_ap_record_t wifi_ap_record;
|
||||
int8_t rssi_data_in = 0, rssi_data_out = 0;
|
||||
int16_t rssi_sum = 0, rssi_last_sum = 0, rssi_save_sum = 0;
|
||||
int8_t rssi_flag = 0;
|
||||
uint16_t queue_rssi_single_size = 0, queue_rssi_sum_size = 0;
|
||||
BaseType_t ret;
|
||||
|
||||
wifi_antenna_auto_switch_config_t *config = ( wifi_antenna_auto_switch_config_t *)arg;
|
||||
|
||||
xQueue_rssi_single_handle = xQueueCreate(QUEUE_LENGTH_RSSI_SINGLE, RSSI_SINGLE_SIZE);
|
||||
xQueue_rssi_sum_handle = xQueueCreate(QUEUE_LENGTH_RSSI_SUM, RSSI_SUM_SIZE);
|
||||
|
||||
while(true) {
|
||||
while(ESP_OK != esp_wifi_sta_get_ap_info(&wifi_ap_record)) {
|
||||
/**< Can't find AP*/
|
||||
vTaskDelay(100/portTICK_PERIOD_MS);
|
||||
}
|
||||
/**< Filter the current rssi*/
|
||||
rssi_data_in = KalmanFilter(wifi_ap_record.rssi);
|
||||
|
||||
/**< Save real-time rssi single*/
|
||||
if (xQueueSend(xQueue_rssi_single_handle, (void *)&rssi_data_in, ( TickType_t ) 0) == pdPASS ) {
|
||||
rssi_sum += rssi_data_in;
|
||||
queue_rssi_single_size++;
|
||||
ESP_LOGD(TAG, "rssi_data_in:%d", rssi_data_in);
|
||||
}
|
||||
|
||||
/**< Rssi single queue full*/
|
||||
if(queue_rssi_single_size >= RSSI_SINGLE_SIZE) {
|
||||
xQueueReceive( xQueue_rssi_single_handle, &rssi_data_out, ( TickType_t ) 0);
|
||||
queue_rssi_single_size--;
|
||||
rssi_sum -= rssi_data_out;
|
||||
/**< Save real-time rssi sum*/
|
||||
if( xQueueSend(xQueue_rssi_sum_handle, (void *)&rssi_sum, ( TickType_t ) 0) == pdPASS ) {
|
||||
queue_rssi_sum_size++;
|
||||
}
|
||||
|
||||
/**< Rssi sum queue full*/
|
||||
if (queue_rssi_sum_size >= RSSI_SUM_SIZE) {
|
||||
xQueueReceive( xQueue_rssi_sum_handle, &rssi_last_sum, ( TickType_t ) 0);
|
||||
queue_rssi_sum_size--;
|
||||
if (abs(rssi_last_sum - rssi_sum)> ((config->ant_switch) * 2 / 3 ) && rssi_flag == 0) {
|
||||
rssi_save_sum = rssi_last_sum;
|
||||
rssi_flag = 1;
|
||||
ESP_LOGD(TAG, "Start listening rssi change");
|
||||
}
|
||||
if(rssi_flag > 0) {
|
||||
rssi_flag++;
|
||||
/**< Wait for 6 seconds to check whether the environment is normal*/
|
||||
if (rssi_flag > WAIT_TIME) {
|
||||
ESP_LOGD(TAG, "End of listening rssi");
|
||||
/**< Ambient noise factor: abs(rssi_last_sum - rssi_sum) * RSSI_KD*/
|
||||
int16_t ans = abs(rssi_save_sum - rssi_sum) - abs(rssi_last_sum - rssi_sum) * RSSI_KD;
|
||||
rssi_flag = 0;
|
||||
if(ans > (config->ant_switch)) {
|
||||
/**< Determine that the signal has changed*/
|
||||
queue_rssi_sum_size = 0;
|
||||
queue_rssi_single_size = 0;
|
||||
ESP_LOGD(TAG, "monitor result:%d > %d", ans, (config->ant_switch));
|
||||
/**< Select the optimal antenna*/
|
||||
antenna_switch_function(config);
|
||||
/**< Wait for parameters to take effect*/
|
||||
vTaskDelay(100 / portTICK_PERIOD_MS);
|
||||
do
|
||||
{
|
||||
/**< Clear the rssi single queue*/
|
||||
ret = xQueueReceive(xQueue_rssi_single_handle, &rssi_data_out, 0);
|
||||
} while (ret != pdFALSE);
|
||||
do
|
||||
{
|
||||
/**< Clear the rssi sum queue*/
|
||||
ret = xQueueReceive(xQueue_rssi_sum_handle, &rssi_data_out, 0);
|
||||
} while (ret != pdFALSE);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
vTaskDelay(100 / portTICK_PERIOD_MS);
|
||||
}
|
||||
}
|
||||
|
||||
esp_err_t esp_wifi_set_ant_soft_switch(const wifi_antenna_auto_switch_config_t *config)
|
||||
{
|
||||
BaseType_t ret;
|
||||
|
||||
ESP_RETURN_ON_FALSE(config->ant_num < ANT_TOTAL_MAX, ESP_ERR_INVALID_ARG, TAG, "antenna nunmbers error!");
|
||||
/**< Refresh configuration parameters*/
|
||||
wifi_three_ant_auto_get_config = *config;
|
||||
/**< Select the optimal antenna*/
|
||||
antenna_switch_function(config);
|
||||
|
||||
ret = xTaskCreatePinnedToCore(antenna_soft_switching_task, SOFT_SWITCHING_NAME, SOFT_SWITCHING_STACK, (void *)config, SOFT_SWITCHING_PRIORITY, &antenna_task_handle, portNUM_PROCESSORS - 1);
|
||||
if (ret != pdPASS) {
|
||||
ESP_LOGE(TAG, "create task %s failed", SOFT_SWITCHING_NAME);
|
||||
return ESP_FAIL;
|
||||
}
|
||||
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t esp_wifi_get_ant_soft_switch_config(wifi_antenna_auto_switch_config_t *config)
|
||||
{
|
||||
*config = wifi_three_ant_auto_get_config;
|
||||
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
void esp_deinit_ant_soft_switch(void)
|
||||
{
|
||||
vTaskDelete(antenna_task_handle);
|
||||
}
|
||||
@ -0,0 +1,64 @@
|
||||
/*
|
||||
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
||||
*
|
||||
* SPDX-License-Identifier: Unlicense OR CC0-1.0
|
||||
*/
|
||||
/*
|
||||
* Design of antenna soft switching : 2023.02.21
|
||||
*
|
||||
* version:v1.0
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
#include "esp_err.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
typedef enum {
|
||||
ANT_TOTAL_TWO = 2, /**< Two antennas participate in the switch */
|
||||
ANT_TOTAL_THREE, /**< Three antennas participate in the switch */
|
||||
ANT_TOTAL_MAX
|
||||
} ant_mun_t;
|
||||
/**
|
||||
* @brief WiFi antenna auto switch configuration
|
||||
*
|
||||
*/
|
||||
typedef struct {
|
||||
ant_mun_t ant_num; /**< WiFi use antenna numbers 2 or 3*/
|
||||
uint8_t ant_zero; /**< WiFi antenna zero select*/
|
||||
uint8_t ant_one; /**< WiFi antenna one select*/
|
||||
uint8_t ant_two; /**< WiFi antenna two select*/
|
||||
int16_t ant_switch; /**< WiFi antenna auto switch sensitive*/
|
||||
} wifi_antenna_auto_switch_config_t;
|
||||
|
||||
/**
|
||||
* @brief Set antenna auto configuration
|
||||
*
|
||||
* @param config Antenna auto configuration.
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK: succeed
|
||||
* - ESP_FAIL: error
|
||||
*/
|
||||
esp_err_t esp_wifi_set_ant_soft_switch(const wifi_antenna_auto_switch_config_t *config);
|
||||
|
||||
/**
|
||||
* @brief Get antenna auto configuration
|
||||
*
|
||||
* @param config Antenna auto configuration.
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK: succeed
|
||||
*/
|
||||
esp_err_t esp_wifi_get_ant_soft_switch_config(wifi_antenna_auto_switch_config_t *config);
|
||||
|
||||
/**
|
||||
* @brief Delete antenna soft switching task
|
||||
*/
|
||||
void esp_deinit_ant_soft_switch(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
2
examples/wifi/antenna/main/CMakeLists.txt
Normal file
2
examples/wifi/antenna/main/CMakeLists.txt
Normal file
@ -0,0 +1,2 @@
|
||||
idf_component_register(SRCS "antenna_switch_example_main.c"
|
||||
REQUIRES nvs_flash esp_wifi antenna_soft_switch)
|
||||
47
examples/wifi/antenna/main/Kconfig.projbuild
Normal file
47
examples/wifi/antenna/main/Kconfig.projbuild
Normal file
@ -0,0 +1,47 @@
|
||||
menu "Example Configuration"
|
||||
|
||||
config ESP_WIFI_SSID
|
||||
string "WiFi SSID"
|
||||
default "myssid"
|
||||
help
|
||||
SSID (network name) for the example to connect to.
|
||||
|
||||
config ESP_WIFI_PASSWORD
|
||||
string "WiFi Password"
|
||||
default "mypassword"
|
||||
help
|
||||
WiFi password (WPA or WPA2) for the example to use.
|
||||
|
||||
config ESP_MAXIMUM_RETRY
|
||||
int "Maximum retry"
|
||||
default 5
|
||||
help
|
||||
Set the Maximum retry to avoid station reconnecting to the AP unlimited when the AP is really inexistent.
|
||||
|
||||
choice ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD
|
||||
prompt "WiFi Scan auth mode threshold"
|
||||
default ESP_WIFI_AUTH_WPA2_PSK
|
||||
help
|
||||
The weakest authmode to accept in the scan mode.
|
||||
This value defaults to ESP_WIFI_AUTH_WPA2_PSK incase password is present and ESP_WIFI_AUTH_OPEN is used.
|
||||
Please select ESP_WIFI_AUTH_WEP/ESP_WIFI_AUTH_WPA_PSK incase AP is operating in WEP/WPA mode.
|
||||
|
||||
config ESP_WIFI_AUTH_OPEN
|
||||
bool "OPEN"
|
||||
config ESP_WIFI_AUTH_WEP
|
||||
bool "WEP"
|
||||
config ESP_WIFI_AUTH_WPA_PSK
|
||||
bool "WPA PSK"
|
||||
config ESP_WIFI_AUTH_WPA2_PSK
|
||||
bool "WPA2 PSK"
|
||||
config ESP_WIFI_AUTH_WPA_WPA2_PSK
|
||||
bool "WPA/WPA2 PSK"
|
||||
config ESP_WIFI_AUTH_WPA3_PSK
|
||||
bool "WPA3 PSK"
|
||||
config ESP_WIFI_AUTH_WPA2_WPA3_PSK
|
||||
bool "WPA2/WPA3 PSK"
|
||||
config ESP_WIFI_AUTH_WAPI_PSK
|
||||
bool "WAPI PSK"
|
||||
endchoice
|
||||
|
||||
endmenu
|
||||
191
examples/wifi/antenna/main/antenna_switch_example_main.c
Normal file
191
examples/wifi/antenna/main/antenna_switch_example_main.c
Normal file
@ -0,0 +1,191 @@
|
||||
/*
|
||||
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
||||
*
|
||||
* SPDX-License-Identifier: Unlicense OR CC0-1.0
|
||||
*/
|
||||
/* WiFi station Example
|
||||
|
||||
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
||||
|
||||
Unless required by applicable law or agreed to in writing, this
|
||||
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
||||
CONDITIONS OF ANY KIND, either express or implied.
|
||||
*/
|
||||
#include <string.h>
|
||||
#include "freertos/FreeRTOS.h"
|
||||
#include "freertos/task.h"
|
||||
#include "freertos/event_groups.h"
|
||||
#include "esp_system.h"
|
||||
#include "esp_wifi.h"
|
||||
#include "esp_event.h"
|
||||
#include "esp_log.h"
|
||||
#include "nvs_flash.h"
|
||||
#include "esp_wifi.h"
|
||||
|
||||
#include "lwip/err.h"
|
||||
#include "lwip/sys.h"
|
||||
#include "antenna_switch.h"
|
||||
|
||||
/* The examples use WiFi configuration that you can set via project configuration menu
|
||||
If you'd rather not, just change the below entries to strings with
|
||||
the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
|
||||
*/
|
||||
#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
|
||||
#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
|
||||
#define EXAMPLE_ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY
|
||||
|
||||
#if CONFIG_ESP_WIFI_AUTH_OPEN
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_OPEN
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WEP
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WEP
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WPA_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_PSK
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WPA2_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_PSK
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WPA_WPA2_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_WPA2_PSK
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WPA3_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA3_PSK
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WPA2_WPA3_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_WPA3_PSK
|
||||
#elif CONFIG_ESP_WIFI_AUTH_WAPI_PSK
|
||||
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WAPI_PSK
|
||||
#endif
|
||||
|
||||
/* FreeRTOS event group to signal when we are connected*/
|
||||
static EventGroupHandle_t s_wifi_event_group;
|
||||
|
||||
/* The event group allows multiple bits for each event, but we only care about two events:
|
||||
* - we are connected to the AP with an IP
|
||||
* - we failed to connect after the maximum amount of retries */
|
||||
#define WIFI_CONNECTED_BIT BIT0
|
||||
#define WIFI_FAIL_BIT BIT1
|
||||
|
||||
static const char *TAG = "multi-antenna example";
|
||||
|
||||
static int s_retry_num = 0;
|
||||
|
||||
static void event_handler(void* arg, esp_event_base_t event_base,
|
||||
int32_t event_id, void* event_data)
|
||||
{
|
||||
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
|
||||
esp_wifi_connect();
|
||||
} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
|
||||
if (s_retry_num < EXAMPLE_ESP_MAXIMUM_RETRY) {
|
||||
esp_wifi_connect();
|
||||
s_retry_num++;
|
||||
ESP_LOGI(TAG, "retry to connect to the AP");
|
||||
} else {
|
||||
xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
|
||||
}
|
||||
ESP_LOGI(TAG,"connect to the AP fail");
|
||||
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
|
||||
ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
|
||||
ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
|
||||
s_retry_num = 0;
|
||||
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
|
||||
}
|
||||
}
|
||||
|
||||
void wifi_init_sta(void)
|
||||
{
|
||||
s_wifi_event_group = xEventGroupCreate();
|
||||
|
||||
ESP_ERROR_CHECK(esp_netif_init());
|
||||
|
||||
ESP_ERROR_CHECK(esp_event_loop_create_default());
|
||||
esp_netif_create_default_wifi_sta();
|
||||
|
||||
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
|
||||
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
|
||||
|
||||
esp_event_handler_instance_t instance_any_id;
|
||||
esp_event_handler_instance_t instance_got_ip;
|
||||
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
|
||||
ESP_EVENT_ANY_ID,
|
||||
&event_handler,
|
||||
NULL,
|
||||
&instance_any_id));
|
||||
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
|
||||
IP_EVENT_STA_GOT_IP,
|
||||
&event_handler,
|
||||
NULL,
|
||||
&instance_got_ip));
|
||||
|
||||
wifi_config_t wifi_config = {
|
||||
.sta = {
|
||||
.ssid = EXAMPLE_ESP_WIFI_SSID,
|
||||
.password = EXAMPLE_ESP_WIFI_PASS,
|
||||
/* Authmode threshold resets to WPA2 as default if password matches WPA2 standards (pasword len => 8).
|
||||
* If you want to connect the device to deprecated WEP/WPA networks, Please set the threshold value
|
||||
* to WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK and set the password with length and format matching to
|
||||
* WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK standards.
|
||||
*/
|
||||
.threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD,
|
||||
.sae_pwe_h2e = WPA3_SAE_PWE_BOTH,
|
||||
},
|
||||
};
|
||||
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
|
||||
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
|
||||
ESP_ERROR_CHECK(esp_wifi_start() );
|
||||
|
||||
ESP_LOGI(TAG, "wifi_init_sta finished.");
|
||||
|
||||
/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
|
||||
* number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
|
||||
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
|
||||
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
|
||||
pdFALSE,
|
||||
pdFALSE,
|
||||
portMAX_DELAY);
|
||||
|
||||
/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
|
||||
* happened. */
|
||||
if (bits & WIFI_CONNECTED_BIT) {
|
||||
ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
|
||||
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
|
||||
} else if (bits & WIFI_FAIL_BIT) {
|
||||
ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
|
||||
EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
|
||||
} else {
|
||||
ESP_LOGE(TAG, "UNEXPECTED EVENT");
|
||||
}
|
||||
}
|
||||
|
||||
void app_main(void)
|
||||
{
|
||||
//Initialize NVS
|
||||
esp_err_t ret = nvs_flash_init();
|
||||
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
|
||||
ESP_ERROR_CHECK(nvs_flash_erase());
|
||||
ret = nvs_flash_init();
|
||||
}
|
||||
ESP_ERROR_CHECK(ret);
|
||||
|
||||
ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
|
||||
wifi_init_sta();
|
||||
|
||||
wifi_ant_gpio_config_t ant_gpio_config = {
|
||||
// ESP32-WROOM-DA boards default antenna pins
|
||||
.gpio_cfg[0] = {.gpio_select = 1, .gpio_num = 21},
|
||||
.gpio_cfg[1] = {.gpio_select = 1, .gpio_num = 22},
|
||||
};
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ant_gpio(&ant_gpio_config));
|
||||
ESP_ERROR_CHECK(esp_wifi_get_ant_gpio(&ant_gpio_config));
|
||||
ESP_LOGI(TAG, "GPIO: [0].pin = %d, [1].pin = %d",ant_gpio_config.gpio_cfg[0].gpio_num, ant_gpio_config.gpio_cfg[1].gpio_num);
|
||||
|
||||
wifi_antenna_auto_switch_config_t wifi_antenna_auto_switch_config;
|
||||
wifi_antenna_auto_switch_config.ant_num = ANT_TOTAL_THREE;
|
||||
wifi_antenna_auto_switch_config.ant_zero = 0;
|
||||
wifi_antenna_auto_switch_config.ant_one = 1;
|
||||
wifi_antenna_auto_switch_config.ant_two = 3;
|
||||
wifi_antenna_auto_switch_config.ant_switch = 35;
|
||||
ESP_ERROR_CHECK(esp_wifi_set_ant_soft_switch(&wifi_antenna_auto_switch_config));
|
||||
|
||||
while(true) {
|
||||
wifi_ant_config_t ant_config;
|
||||
esp_wifi_get_ant(&ant_config);
|
||||
ESP_LOGI(TAG, "rx mode = %d, tx mode = %d, ant0_en = %d, ant1_en = %d",ant_config.rx_ant_mode, ant_config.tx_ant_mode, ant_config.enabled_ant0, ant_config.enabled_ant1);
|
||||
vTaskDelay(500 / portTICK_PERIOD_MS);
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user