ESP External Connection

This component provides external wireless connectivity(Wi-Fi & Bluetooth) for ESP chips that do not have built-in wireless capabilities. The APIs used by this component are compatible with the Wi-Fi and Bluetooth component APIs in the ESP-IDF.

Supported Features

Features	Supported	Sill not Supported
Virtual Wi-Fi interfaces	Station, SoftAP	Sniffer, Wi-Fi Aware (NAN)
Wi-Fi Modes	Station, SoftAP, Station/AP-coexistence mode
Wi-Fi Protocols	802.11 b/g/n
Wi-Fi Security Modes	Open / WPA / WPA2 / WPA3 / WPA2-Enterprise / WPA3-Enterprise / WPS	WAPI / DPP
Power Save		Modem-sleep
Wi-Fi Data Transmission	AMSDU, AMPDU, HT40, QoS
Vendor Features		ESP-NOW, Long Range mode, SmartConfig, Channel State Information
Scan	Fast scan, All-channel scan
Antennas		Multiple
Bluetooth features	Classic Bluetooth, BLE 4.2

Supported ESP Chips

Supported Host : ESP32P4
Supported Target : ESP8689

Supported Boards

ESP32-P4 Core Board with HWD-124 ESP32-P4 Core ESP32_Sub
Hardware setup
- Pin Connections
  
  ESP32P4 ESP8689 Function
  
  42 EN Reset
  
  43 BOOT Forcing ESP8689 in download mode
  
  45 D1 Data 1
  
  46 D0 Data 0
  
  47 CLK Clock
  
  48 CMD Command
  
  49 D3 Data 3
  
  50 D2 Data 2
  - The ESP32P4 controls the reset of the ESP8689 through pin 42.

Supported Transports

SDIO Only
- Wi-Fi and Bluetooth, traffic for both runs over SDIO

Supported APIs

Classification	Supported APIs
Initialization	esp_wifi_init / esp_wifi_deinit
Initialization	esp_wifi_start / esp_wifi_stop
Configuration	esp_wifi_set_mode / esp_wifi_get_mode
	esp_wifi_set_config / esp_wifi_get_config
	esp_wifi_set_storage
	esp_wifi_set_protocol / esp_wifi_get_protocol
	esp_wifi_set_country / esp_wifi_get_country
	esp_wifi_set_country_code / esp_wifi_get_country_code
	esp_wifi_set_bandwidth / esp_wifi_get_bandwidth
	esp_wifi_set_mac / esp_wifi_get_mac
	esp_wifi_restore
	esp_wifi_set_vendor_ie / esp_wifi_set_vendor_ie_cb
	esp_wifi_set_channel / esp_wifi_get_channel
	esp_wifi_set_inactive_time / esp_wifi_get_inactive_time
	esp_wifi_set_rssi_threshold
Connection	esp_wifi_connect / esp_wifi_disconnect
	esp_wifi_sta_get_aid / esp_wifi_ap_get_sta_aid
	esp_wifi_sta_get_ap_info
	esp_wifi_ap_get_sta_list_with_ip / esp_wifi_ap_get_sta_list
	esp_wifi_deauth_sta
	esp_wifi_sta_get_rssi
	esp_wifi_sta_get_negotiated_phymode
Scan	esp_wifi_scan_start / esp_wifi_scan_stop
	esp_wifi_set_scan_parameters / esp_wifi_get_scan_parameters
	esp_wifi_scan_get_ap_num
	esp_wifi_scan_get_ap_records / esp_wifi_scan_get_ap_record
	esp_wifi_clear_ap_list
Others	esp_wifi_80211_tx
Others	esp_wifi_statis_dump

Step to enable this component in an example code:

Add this component to your project using idf.py add-dependency esp-extconn command.

In the main file of the example, add the following line:

#ifdef CONFIG_ESP_EXT_CONN_ENABLE
#include "esp_extconn.h"
#endif

In your app_main() function, add the following line as the first line:

#ifdef CONFIG_ESP_EXT_CONN_ENABLE
esp_extconn_config_t config = ESP_EXTCONN_CONFIG_DEFAULT();
esp_extconn_init(&config);
#endif

Using esp_wifi components like built-in wireless chips :)

Throughput Performance

1. Parameters

Parameters		Value
System Parameters	CACHE_L2_CACHE	128 KB
	CACHE_L2_CACHE_LINE	64 B
	FREERTOS_HZ	100 Hz
Wi-Fi Parameters	WIFI_STATIC_RX_BUFFER_NUM	24
	WIFI_DYNAMIC_RX_BUFFER_NUM	128
	WIFI_DYNAMIC_TX_BUFFER_NUM	128
	WIFI_RX_BA_WIN	32
	WIFI_IRAM_OPT	y
	WIFI_RX_IRAM_OPT	y
Lwip Parameters	LWIP_IRAM_OPTIMIZATION	y
	LWIP_TCPIP_RECVMBOX_SIZE	64
	LWIP_TCP_WND_DEFAULT	65535
	LWIP_TCP_SND_BUF_DEFAULT	65535
	LWIP_TCP_RECVMBOX_SIZE	64
	LWIP_TCP_ACCEPTMBOX_SIZE	64
	LWIP_UDP_RECVMBOX_SIZE	64
Tasks Parameters	Iperf traffic Core ID	0
	Iperf traffic Priority	23
	Lwip Core ID	0
	Lwip Priority	23
	Wi-Fi Core ID	0
	Wi-Fi Priority	23
	SDIO TX Core ID	1
	SDIO TX Priority	24
	SDIO RX Core ID	1
	SDIO RX Priority	23
Router parameters	Type	ASUS RT-AX88U Pro
	Bandwidth	40MHZ
	Beacon interval (ms)	1000
	Mode	N only

2. Performance

1. TCP TX

[ ID] Interval            Transfer      Bandwidth
[  1] 0.0000-1.0000 sec   5.69 MBytes   47.7 Mbits/sec
[  1] 1.0000-2.0000 sec   5.77 MBytes   48.4 Mbits/sec
[  1] 2.0000-3.0000 sec   5.79 MBytes   48.6 Mbits/sec
[  1] 3.0000-4.0000 sec   5.81 MBytes   48.8 Mbits/sec
[  1] 4.0000-5.0000 sec   5.90 MBytes   49.5 Mbits/sec
[  1] 5.0000-6.0000 sec   5.87 MBytes   49.2 Mbits/sec
[  1] 6.0000-7.0000 sec   5.88 MBytes   49.3 Mbits/sec
[  1] 7.0000-8.0000 sec   5.80 MBytes   48.6 Mbits/sec
[  1] 8.0000-9.0000 sec   5.80 MBytes   48.6 Mbits/sec
[  1] 9.0000-10.0000 sec  5.79 MBytes   48.6 Mbits/sec
[  1] 0.0000-10.0053 sec  58.1 MBytes   48.7 Mbits/sec

2. TCP RX

 Interval      Bandwidth
 0.0- 1.0 sec  51.24 Mbits/sec
 1.0- 2.0 sec  51.04 Mbits/sec
 2.0- 3.0 sec  51.59 Mbits/sec
 3.0- 4.0 sec  51.44 Mbits/sec
 4.0- 5.0 sec  51.58 Mbits/sec
 5.0- 6.0 sec  51.45 Mbits/sec
 6.0- 7.0 sec  51.25 Mbits/sec
 7.0- 8.0 sec  51.91 Mbits/sec
 8.0- 9.0 sec  51.66 Mbits/sec
 9.0-10.0 sec  51.21 Mbits/sec
 0.0-10.0 sec  51.44 Mbits/sec

3. UDP TX

[ ID] Interval            Transfer     Bandwidth        Jitter    Lost/Total Datagrams
[  1] 0.0000-1.0000 sec   7.69 MBytes  64.5 Mbits/sec   0.178 ms  0/5558 (0%)
[  1] 1.0000-2.0000 sec   7.72 MBytes  64.7 Mbits/sec   0.172 ms  0/5580 (0%)
[  1] 2.0000-3.0000 sec   7.73 MBytes  64.8 Mbits/sec   0.196 ms  0/5589 (0%)
[  1] 3.0000-4.0000 sec   7.71 MBytes  64.7 Mbits/sec   0.178 ms  0/5576 (0%)
[  1] 4.0000-5.0000 sec   7.72 MBytes  64.8 Mbits/sec   0.167 ms  0/5583 (0%)
[  1] 5.0000-6.0000 sec   7.73 MBytes  64.8 Mbits/sec   0.163 ms  0/5588 (0%)
[  1] 6.0000-7.0000 sec   7.73 MBytes  64.9 Mbits/sec   0.168 ms  22/5615 (0.39%)
[  1] 7.0000-8.0000 sec   7.73 MBytes  64.8 Mbits/sec   0.177 ms  24/5614 (0.43%)
[  1] 8.0000-9.0000 sec   7.72 MBytes  64.8 Mbits/sec   0.171 ms  20/5606 (0.36%)
[  1] 9.0000-10.0000 sec  7.72 MBytes  64.7 Mbits/sec   0.176 ms  27/5607 (0.48%)
[  1] 0.0000-10.0010 sec  77.2 MBytes  64.8 Mbits/sec   0.195 ms  93/55922 (0.17%)

4. UDP RX

Interval       Bandwidth
0.0- 1.0 sec  84.16 Mbits/sec
1.0- 2.0 sec  84.34 Mbits/sec
2.0- 3.0 sec  84.43 Mbits/sec
3.0- 4.0 sec  84.14 Mbits/sec
4.0- 5.0 sec  83.56 Mbits/sec
5.0- 6.0 sec  84.45 Mbits/sec
6.0- 7.0 sec  84.57 Mbits/sec
7.0- 8.0 sec  84.20 Mbits/sec
8.0- 9.0 sec  83.71 Mbits/sec
9.0-10.0 sec  83.86 Mbits/sec
0.0-10.0 sec  84.14 Mbits/sec

Note : Due to the limited clock frequency (40M) of SDIO, there may be slight packet loss in the UDP TX direction.

Name		Name	Last commit message	Last commit date
Latest commit History 31 Commits
.github/workflows		.github/workflows
include		include
priv_include		priv_include
src		src
CMakeLists.txt		CMakeLists.txt
Kconfig		Kconfig
LICENSE.txt		LICENSE.txt
README.md		README.md
idf_component.yml		idf_component.yml

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ESP External Connection

Supported Features

Supported ESP Chips

Supported Boards

Supported Transports

Supported APIs

Step to enable this component in an example code:

Throughput Performance

1. Parameters

2. Performance

1. TCP TX

2. TCP RX

3. UDP TX

4. UDP RX

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ESP32P4	ESP8689	Function
42	EN	Reset
43	BOOT	Forcing ESP8689 in download mode
45	D1	Data 1
46	D0	Data 0
47	CLK	Clock
48	CMD	Command
49	D3	Data 3
50	D2	Data 2

License

espressif/esp-extconn

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Repository files navigation

ESP External Connection

Supported Features

Supported ESP Chips

Supported Boards

Supported Transports

Supported APIs

Step to enable this component in an example code:

Throughput Performance

1. Parameters

2. Performance

1. TCP TX

2. TCP RX

3. UDP TX

4. UDP RX

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