Building for ESP32-P4 using esp_hosted and esp_wifi_remote

Author: mantriyogesh

network_provisioning/CHANGELOG.md

@@ -1,3 +1,9 @@
+# 09-Oct-2025
+
+- Build wifi_prov example for ESP32-P4 (for ESP32-P4-Function-EV-Board)
+- ESP32-P4 assumes ESP32-C6 (configurable) acts as Wi-Fi and BLE co-processor over SDIO transport
+- Uses esp_wifi_remote and esp_hosted_mcu
+
 # 01-April-2025
 
 - Extend provisioning check for `ESP_WIFI_REMOTE_ENABLED` as well along with existing `ESP_WIFI_ENABLED`

network_provisioning/examples/wifi_prov/README.md

@@ -1,5 +1,5 @@
-| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-S2 | ESP32-S3 |
-| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- |
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-S2 | ESP32-S3 | ESP32-P4 |
+| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- |
 
 # Wi-Fi Provisioning Example
 
@@ -283,6 +283,40 @@ expected on success:
 CustomData response: SUCCESS
 ```
 
+## ESP32-P4 Support
+
+The ESP32-P4 uses a two-chip solution with ESP-Hosted to enable Wi-Fi provisioning.
+
+### Running on ESP32-P4-Function-EV-Board
+
+On this board, the ESP32-P4 connects to an on-board ESP32-C6 (co-processor) via SDIO. The ESP32-C6 comes pre-flashed with ESP-Hosted co-processor software. See [ESP-Hosted ESP32-P4 EV Board documentation](https://github.com/espressif/esp-hosted-mcu/blob/main/docs/esp32_p4_function_ev_board.md) for details.
+
+#### Build and Flash
+
+Set ESP32-P4 as target:
+```
+idf.py set-target esp32p4
+```
+
+Configure the project:
+```
+idf.py menuconfig
+```
+Navigate to `Component config` → `Wi-Fi Remote` → `choose slave target` and select `esp32c6`.
+
+Build and flash:
+```
+idf.py -p PORT flash monitor
+```
+
+#### Co-processor Update (Optional)
+
+The pre-flashed co-processor software is compatible, but upgrading to the latest version is recommended via:
+- [Simplified co-processor OTA](https://github.com/espressif/esp-hosted-mcu/blob/main/docs/esp32_p4_function_ev_board.md#51-ota-updates), or
+- [Manual flashing with ESP-Prog](https://github.com/espressif/esp-hosted-mcu/blob/main/docs/esp32_p4_function_ev_board.md#52-using-esp-prog)
+
+For ESP-Hosted technical queries, open an issue at the [ESP-Hosted GitHub repository](https://github.com/espressif/esp-hosted-mcu/issues).
+
 ## Troubleshooting
 
 ### Provisioning failed

network_provisioning/examples/wifi_prov/main/idf_component.yml

@@ -5,4 +5,11 @@ dependencies:
   espressif/network_provisioning:
       version: "*"
       override_path: '../../../'
-
+  espressif/esp_wifi_remote:
+    version: ">=0.10"
+    rules:
+      - if: "target in [esp32p4, esp32h2]"
+  espressif/esp_hosted:
+    version: "~2"
+    rules:
+      - if: "target in [esp32p4, esp32h2]"

network_provisioning/examples/wifi_prov/sdkconfig.defaults.esp32p4

@@ -0,0 +1,36 @@
+# Override some defaults so BT stack is enabled
+# in this example
+
+CONFIG_FREERTOS_HZ=1000
+
+# BT config
+CONFIG_BT_ENABLED=y
+CONFIG_BT_CONTROLLER_DISABLED=y
+CONFIG_BT_BLUEDROID_ENABLED=n
+CONFIG_BT_NIMBLE_ENABLED=y
+CONFIG_BT_NIMBLE_TRANSPORT_UART=n
+
+# Wi-Fi Remote
+CONFIG_ESP_WIFI_REMOTE_LIBRARY_HOSTED=y
+
+# Enable ESP Hosted BT
+## Use Hosted-HCI (https://github.com/espressif/esp-hosted-mcu/blob/main/docs/bluetooth_design.md#3-bluetooth-interface)
+CONFIG_ESP_HOSTED_ENABLE_BT_NIMBLE=y
+CONFIG_ESP_HOSTED_NIMBLE_HCI_VHCI=y
+
+# Wi-Fi performance config
+CONFIG_WIFI_RMT_STATIC_RX_BUFFER_NUM=16
+CONFIG_WIFI_RMT_DYNAMIC_RX_BUFFER_NUM=64
+CONFIG_WIFI_RMT_DYNAMIC_TX_BUFFER_NUM=64
+CONFIG_WIFI_RMT_AMPDU_TX_ENABLED=y
+CONFIG_WIFI_RMT_TX_BA_WIN=32
+CONFIG_WIFI_RMT_AMPDU_RX_ENABLED=y
+CONFIG_WIFI_RMT_RX_BA_WIN=32
+
+# LWIP performance config
+CONFIG_LWIP_TCP_SND_BUF_DEFAULT=65534
+CONFIG_LWIP_TCP_WND_DEFAULT=65534
+CONFIG_LWIP_TCP_RECVMBOX_SIZE=64
+CONFIG_LWIP_UDP_RECVMBOX_SIZE=64
+CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=64
+CONFIG_LWIP_TCP_SACK_OUT=y