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Maximize Wi-Fi performance on ESP32
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| constexpr auto WIFI_CHANNEL = 9; // Find a relatively quiet channel | |
| constexpr auto WIFI_DATA_RATE = WIFI_PHY_RATE_24M; | |
| void initFastWifi() { | |
| // Set up Wi-Fi with a faster data rate by disabling AMPDU | |
| // and setting a very fast fixed rate. | |
| // https://www.esp32.com/viewtopic.php?t=9965 | |
| // We also need delays to work around races between each step: | |
| // https://esp32.com/viewtopic.php?t=2512 | |
| WiFi.disconnect(); | |
| vTaskDelay(100 / portTICK_RATE_MS); | |
| WiFi.mode(WIFI_STA); | |
| vTaskDelay(100 / portTICK_RATE_MS); | |
| ESP_ERROR_CHECK(esp_wifi_stop()); | |
| vTaskDelay(100 / portTICK_RATE_MS); | |
| ESP_ERROR_CHECK(esp_wifi_deinit()); | |
| vTaskDelay(100 / portTICK_RATE_MS); | |
| wifi_init_config_t initConfig = WIFI_INIT_CONFIG_DEFAULT(); | |
| initConfig.ampdu_tx_enable = false; | |
| ESP_ERROR_CHECK(esp_wifi_init(&initConfig)); | |
| ESP_ERROR_CHECK(esp_wifi_start()); | |
| ESP_ERROR_CHECK(esp_wifi_set_channel(WIFI_CHANNEL, WIFI_SECOND_CHAN_NONE)); | |
| ESP_ERROR_CHECK(esp_wifi_internal_set_fix_rate(WIFI_IF_STA, true, WIFI_DATA_RATE)); | |
| ESP_ERROR_CHECK(esp_now_init()); | |
| } |
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