wip: esp-hosted net driver.

9 files changed, 2012 insertions, 0 deletions

diff --git a/embassy-net-esp-hosted/Cargo.toml b/embassy-net-esp-hosted/Cargo.toml
new file mode 100644
index 000000000..a7e18ee09
--- /dev/null
+++ b/embassy-net-esp-hosted/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "embassy-net-esp-hosted"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+defmt = { version = "0.3", optional = true }
+log = { version = "0.4.14", optional = true }
+
+embassy-time = { version = "0.1.0", path = "../embassy-time" }
+embassy-sync = { version = "0.2.0", path = "../embassy-sync"}
+embassy-futures = { version = "0.1.0", path = "../embassy-futures"}
+embassy-net-driver-channel = { version = "0.1.0", path = "../embassy-net-driver-channel"}
+
+embedded-hal = { version = "1.0.0-alpha.10" }
+embedded-hal-async = { version = "=0.2.0-alpha.1" }
+
+noproto = { git="https://github.com/embassy-rs/noproto", default-features = false, features = ["derive"] }
+#noproto = { version = "0.1", path = "/home/dirbaio/noproto", default-features = false, features = ["derive"] }
+heapless = "0.7.16"
diff --git a/embassy-net-esp-hosted/src/control.rs b/embassy-net-esp-hosted/src/control.rs
new file mode 100644
index 000000000..2381c6b84
--- /dev/null
+++ b/embassy-net-esp-hosted/src/control.rs
@@ -0,0 +1,141 @@
+use ch::driver::LinkState;
+use defmt::Debug2Format;
+use embassy_net_driver_channel as ch;
+use heapless::String;
+
+use crate::ioctl::IoctlState;
+use crate::proto::{self, CtrlMsg};
+
+#[derive(Debug)]
+pub struct Error {
+    pub status: u32,
+}
+
+pub struct Control<'a> {
+    state_ch: ch::StateRunner<'a>,
+    ioctl_state: &'a IoctlState,
+}
+
+enum WifiMode {
+    None = 0,
+    Sta = 1,
+    Ap = 2,
+    ApSta = 3,
+}
+
+impl<'a> Control<'a> {
+    pub(crate) fn new(state_ch: ch::StateRunner<'a>, ioctl_state: &'a IoctlState) -> Self {
+        Self { state_ch, ioctl_state }
+    }
+
+    pub async fn init(&mut self) {
+        debug!("set wifi mode");
+        self.set_wifi_mode(WifiMode::Sta as _).await;
+        let mac_addr = self.get_mac_addr().await;
+        debug!("mac addr: {:02x}", mac_addr);
+        self.state_ch.set_ethernet_address(mac_addr);
+    }
+
+    pub async fn join(&mut self, ssid: &str, password: &str) {
+        let req = proto::CtrlMsg {
+            msg_id: proto::CtrlMsgId::ReqConnectAp as _,
+            msg_type: proto::CtrlMsgType::Req as _,
+            payload: Some(proto::CtrlMsgPayload::ReqConnectAp(proto::CtrlMsgReqConnectAp {
+                ssid: String::from(ssid),
+                pwd: String::from(password),
+                bssid: String::new(),
+                listen_interval: 3,
+                is_wpa3_supported: false,
+            })),
+        };
+        let resp = self.ioctl(req).await;
+        let proto::CtrlMsgPayload::RespConnectAp(resp) = resp.payload.unwrap() else { panic!("unexpected resp") };
+        debug!("======= {:?}", Debug2Format(&resp));
+        assert_eq!(resp.resp, 0);
+        self.state_ch.set_link_state(LinkState::Up);
+    }
+
+    async fn get_mac_addr(&mut self) -> [u8; 6] {
+        let req = proto::CtrlMsg {
+            msg_id: proto::CtrlMsgId::ReqGetMacAddress as _,
+            msg_type: proto::CtrlMsgType::Req as _,
+            payload: Some(proto::CtrlMsgPayload::ReqGetMacAddress(
+                proto::CtrlMsgReqGetMacAddress {
+                    mode: WifiMode::Sta as _,
+                },
+            )),
+        };
+        let resp = self.ioctl(req).await;
+        let proto::CtrlMsgPayload::RespGetMacAddress(resp) = resp.payload.unwrap() else { panic!("unexpected resp") };
+        assert_eq!(resp.resp, 0);
+
+        // WHY IS THIS A STRING? WHYYYY
+        fn nibble_from_hex(b: u8) -> u8 {
+            match b {
+                b'0'..=b'9' => b - b'0',
+                b'a'..=b'f' => b + 0xa - b'a',
+                b'A'..=b'F' => b + 0xa - b'A',
+                _ => panic!("invalid hex digit {}", b),
+            }
+        }
+
+        let mac = resp.mac.as_bytes();
+        let mut res = [0; 6];
+        assert_eq!(mac.len(), 17);
+        for (i, b) in res.iter_mut().enumerate() {
+            *b = (nibble_from_hex(mac[i * 3]) << 4) | nibble_from_hex(mac[i * 3 + 1])
+        }
+        res
+    }
+
+    async fn get_wifi_mode(&mut self) -> u32 {
+        let req = proto::CtrlMsg {
+            msg_id: proto::CtrlMsgId::ReqGetWifiMode as _,
+            msg_type: proto::CtrlMsgType::Req as _,
+            payload: Some(proto::CtrlMsgPayload::ReqGetWifiMode(proto::CtrlMsgReqGetMode {})),
+        };
+        let resp = self.ioctl(req).await;
+        let proto::CtrlMsgPayload::RespGetWifiMode(resp) = resp.payload.unwrap() else { panic!("unexpected resp") };
+        assert_eq!(resp.resp, 0);
+        resp.mode
+    }
+
+    async fn set_wifi_mode(&mut self, mode: u32) {
+        let req = proto::CtrlMsg {
+            msg_id: proto::CtrlMsgId::ReqSetWifiMode as _,
+            msg_type: proto::CtrlMsgType::Req as _,
+            payload: Some(proto::CtrlMsgPayload::ReqSetWifiMode(proto::CtrlMsgReqSetMode { mode })),
+        };
+        let resp = self.ioctl(req).await;
+        let proto::CtrlMsgPayload::RespSetWifiMode(resp) = resp.payload.unwrap() else { panic!("unexpected resp") };
+        assert_eq!(resp.resp, 0);
+    }
+
+    async fn ioctl(&mut self, req: CtrlMsg) -> CtrlMsg {
+        let mut buf = [0u8; 128];
+
+        let req_len = noproto::write(&req, &mut buf).unwrap();
+
+        struct CancelOnDrop<'a>(&'a IoctlState);
+
+        impl CancelOnDrop<'_> {
+            fn defuse(self) {
+                core::mem::forget(self);
+            }
+        }
+
+        impl Drop for CancelOnDrop<'_> {
+            fn drop(&mut self) {
+                self.0.cancel_ioctl();
+            }
+        }
+
+        let ioctl = CancelOnDrop(self.ioctl_state);
+
+        let resp_len = ioctl.0.do_ioctl(&mut buf, req_len).await;
+
+        ioctl.defuse();
+
+        noproto::read(&buf[..resp_len]).unwrap()
+    }
+}
diff --git a/embassy-net-esp-hosted/src/esp_hosted_config.proto b/embassy-net-esp-hosted/src/esp_hosted_config.proto
new file mode 100644
index 000000000..aa1bfde64
--- /dev/null
+++ b/embassy-net-esp-hosted/src/esp_hosted_config.proto
@@ -0,0 +1,432 @@
+syntax = "proto3";
+
+/* Enums similar to ESP IDF */
+enum Ctrl_VendorIEType {
+    Beacon = 0;
+    Probe_req = 1;
+    Probe_resp = 2;
+    Assoc_req = 3;
+    Assoc_resp = 4;
+}
+
+enum Ctrl_VendorIEID {
+    ID_0 = 0;
+    ID_1 = 1;
+}
+
+enum Ctrl_WifiMode {
+    NONE = 0;
+    STA = 1;
+    AP = 2;
+    APSTA = 3;
+}
+
+enum Ctrl_WifiBw {
+    BW_Invalid = 0;
+    HT20 = 1;
+    HT40 = 2;
+}
+
+enum Ctrl_WifiPowerSave {
+    PS_Invalid = 0;
+    MIN_MODEM = 1;
+    MAX_MODEM = 2;
+}
+
+enum Ctrl_WifiSecProt {
+    Open = 0;
+    WEP = 1;
+    WPA_PSK = 2;
+    WPA2_PSK = 3;
+    WPA_WPA2_PSK = 4;
+    WPA2_ENTERPRISE = 5;
+    WPA3_PSK = 6;
+    WPA2_WPA3_PSK = 7;
+}
+
+/* enums for Control path */
+enum Ctrl_Status {
+    Connected = 0;
+    Not_Connected = 1;
+    No_AP_Found = 2;
+    Connection_Fail = 3;
+    Invalid_Argument = 4;
+    Out_Of_Range = 5;
+}
+
+
+enum CtrlMsgType {
+    MsgType_Invalid = 0;
+    Req = 1;
+    Resp = 2;
+    Event = 3;
+    MsgType_Max = 4;
+}
+
+enum CtrlMsgId {
+    MsgId_Invalid = 0;
+
+    /** Request Msgs **/
+    Req_Base = 100;
+
+    Req_GetMACAddress = 101;
+    Req_SetMacAddress = 102;
+    Req_GetWifiMode = 103;
+    Req_SetWifiMode = 104;
+
+    Req_GetAPScanList = 105;
+    Req_GetAPConfig = 106;
+    Req_ConnectAP = 107;
+    Req_DisconnectAP = 108;
+
+    Req_GetSoftAPConfig = 109;
+    Req_SetSoftAPVendorSpecificIE = 110;
+    Req_StartSoftAP = 111;
+    Req_GetSoftAPConnectedSTAList = 112;
+    Req_StopSoftAP = 113;
+
+    Req_SetPowerSaveMode = 114;
+    Req_GetPowerSaveMode = 115;
+
+    Req_OTABegin = 116;
+    Req_OTAWrite = 117;
+    Req_OTAEnd = 118;
+
+    Req_SetWifiMaxTxPower = 119;
+    Req_GetWifiCurrTxPower = 120;
+
+    Req_ConfigHeartbeat = 121;
+    /* Add new control path command response before Req_Max
+     * and update Req_Max */
+    Req_Max = 122;
+
+    /** Response Msgs **/
+    Resp_Base = 200;
+
+    Resp_GetMACAddress = 201;
+    Resp_SetMacAddress = 202;
+    Resp_GetWifiMode = 203;
+    Resp_SetWifiMode = 204;
+
+    Resp_GetAPScanList = 205;
+    Resp_GetAPConfig = 206;
+    Resp_ConnectAP = 207;
+    Resp_DisconnectAP = 208;
+
+    Resp_GetSoftAPConfig = 209;
+    Resp_SetSoftAPVendorSpecificIE = 210;
+    Resp_StartSoftAP = 211;
+    Resp_GetSoftAPConnectedSTAList = 212;
+    Resp_StopSoftAP = 213;
+
+    Resp_SetPowerSaveMode = 214;
+    Resp_GetPowerSaveMode = 215;
+
+    Resp_OTABegin = 216;
+    Resp_OTAWrite = 217;
+    Resp_OTAEnd = 218;
+
+    Resp_SetWifiMaxTxPower = 219;
+    Resp_GetWifiCurrTxPower = 220;
+
+    Resp_ConfigHeartbeat = 221;
+    /* Add new control path command response before Resp_Max
+     * and update Resp_Max */
+    Resp_Max = 222;
+
+    /** Event Msgs **/
+    Event_Base = 300;
+    Event_ESPInit = 301;
+    Event_Heartbeat = 302;
+    Event_StationDisconnectFromAP = 303;
+    Event_StationDisconnectFromESPSoftAP = 304;
+    /* Add new control path command notification before Event_Max
+     * and update Event_Max */
+    Event_Max = 305;
+}
+
+/* internal supporting structures for CtrlMsg */
+message ScanResult {
+    bytes ssid = 1;
+    uint32 chnl = 2;
+    int32 rssi = 3;
+    bytes bssid = 4;
+    Ctrl_WifiSecProt sec_prot = 5;
+}
+
+message ConnectedSTAList {
+    bytes mac = 1;
+    int32 rssi = 2;
+}
+
+
+/* Control path structures */
+/** Req/Resp structure **/
+message CtrlMsg_Req_GetMacAddress {
+    int32 mode = 1;
+}
+
+message CtrlMsg_Resp_GetMacAddress {
+    bytes mac = 1;
+    int32 resp = 2;
+}
+
+message CtrlMsg_Req_GetMode {
+}
+
+message CtrlMsg_Resp_GetMode {
+    int32 mode = 1;
+    int32 resp = 2;
+}
+
+message CtrlMsg_Req_SetMode {
+    int32 mode = 1;
+}
+
+message CtrlMsg_Resp_SetMode {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_GetStatus {
+}
+
+message CtrlMsg_Resp_GetStatus {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_SetMacAddress {
+    bytes mac = 1;
+    int32 mode = 2;
+}
+
+message CtrlMsg_Resp_SetMacAddress {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_GetAPConfig {
+}
+
+message CtrlMsg_Resp_GetAPConfig {
+    bytes ssid = 1;
+    bytes bssid = 2;
+    int32 rssi = 3;
+    int32 chnl = 4;
+    Ctrl_WifiSecProt sec_prot = 5;
+    int32 resp = 6;
+}
+
+message CtrlMsg_Req_ConnectAP {
+    string ssid = 1;
+    string pwd = 2;
+    string bssid = 3;
+    bool is_wpa3_supported = 4;
+    int32 listen_interval = 5;
+}
+
+message  CtrlMsg_Resp_ConnectAP {
+    int32 resp = 1;
+    bytes mac = 2;
+}
+
+message CtrlMsg_Req_GetSoftAPConfig {
+}
+
+message CtrlMsg_Resp_GetSoftAPConfig {
+    bytes ssid = 1;
+    bytes pwd = 2;
+    int32 chnl = 3;
+    Ctrl_WifiSecProt sec_prot = 4;
+    int32 max_conn = 5;
+    bool ssid_hidden = 6;
+    int32 bw = 7;
+    int32 resp = 8;
+}
+
+message CtrlMsg_Req_StartSoftAP {
+    string ssid = 1;
+    string pwd = 2;
+    int32 chnl = 3;
+    Ctrl_WifiSecProt sec_prot = 4;
+    int32 max_conn = 5;
+    bool ssid_hidden = 6;
+    int32 bw = 7;
+}
+
+message CtrlMsg_Resp_StartSoftAP {
+    int32 resp = 1;
+    bytes mac = 2;
+}
+
+message CtrlMsg_Req_ScanResult {
+}
+
+message CtrlMsg_Resp_ScanResult {
+    uint32 count = 1;
+    repeated ScanResult entries = 2;
+    int32 resp = 3;
+}
+
+message CtrlMsg_Req_SoftAPConnectedSTA {
+}
+
+message CtrlMsg_Resp_SoftAPConnectedSTA {
+    uint32 num = 1;
+    repeated ConnectedSTAList stations = 2;
+    int32 resp = 3;
+}
+
+message CtrlMsg_Req_OTABegin {
+}
+
+message CtrlMsg_Resp_OTABegin {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_OTAWrite {
+    bytes ota_data = 1;
+}
+
+message CtrlMsg_Resp_OTAWrite {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_OTAEnd {
+}
+
+message CtrlMsg_Resp_OTAEnd {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_VendorIEData {
+    int32 element_id = 1;
+    int32 length = 2;
+    bytes vendor_oui = 3;
+    int32 vendor_oui_type = 4;
+    bytes payload = 5; 
+}
+
+message CtrlMsg_Req_SetSoftAPVendorSpecificIE {
+    bool enable = 1;
+    Ctrl_VendorIEType type = 2;
+    Ctrl_VendorIEID idx = 3;
+    CtrlMsg_Req_VendorIEData vendor_ie_data = 4;
+}
+
+message CtrlMsg_Resp_SetSoftAPVendorSpecificIE {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_SetWifiMaxTxPower {
+    int32 wifi_max_tx_power = 1;
+}
+
+message CtrlMsg_Resp_SetWifiMaxTxPower {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Req_GetWifiCurrTxPower {
+}
+
+message CtrlMsg_Resp_GetWifiCurrTxPower {
+    int32 wifi_curr_tx_power = 1;
+    int32 resp = 2;
+}
+
+message CtrlMsg_Req_ConfigHeartbeat {
+    bool enable = 1;
+    int32 duration = 2;
+}
+
+message CtrlMsg_Resp_ConfigHeartbeat {
+    int32 resp = 1;
+}
+
+/** Event structure **/
+message CtrlMsg_Event_ESPInit {
+    bytes init_data = 1;
+}
+
+message CtrlMsg_Event_Heartbeat {
+    int32 hb_num = 1;
+}
+
+message CtrlMsg_Event_StationDisconnectFromAP {
+    int32 resp = 1;
+}
+
+message CtrlMsg_Event_StationDisconnectFromESPSoftAP {
+    int32 resp = 1;
+    bytes mac = 2;
+}
+
+message CtrlMsg {
+    /* msg_type could be req, resp or Event */
+    CtrlMsgType msg_type = 1;
+
+    /* msg id */
+    CtrlMsgId msg_id = 2;
+
+    /* union of all msg ids */
+    oneof payload {
+        /** Requests **/
+        CtrlMsg_Req_GetMacAddress req_get_mac_address = 101;
+        CtrlMsg_Req_SetMacAddress req_set_mac_address = 102;
+        CtrlMsg_Req_GetMode req_get_wifi_mode = 103;
+        CtrlMsg_Req_SetMode req_set_wifi_mode = 104;
+
+        CtrlMsg_Req_ScanResult req_scan_ap_list = 105;
+        CtrlMsg_Req_GetAPConfig req_get_ap_config = 106;
+        CtrlMsg_Req_ConnectAP req_connect_ap = 107;
+        CtrlMsg_Req_GetStatus req_disconnect_ap = 108;
+
+        CtrlMsg_Req_GetSoftAPConfig req_get_softap_config = 109;
+        CtrlMsg_Req_SetSoftAPVendorSpecificIE req_set_softap_vendor_specific_ie = 110;
+        CtrlMsg_Req_StartSoftAP req_start_softap = 111;
+        CtrlMsg_Req_SoftAPConnectedSTA req_softap_connected_stas_list = 112;
+        CtrlMsg_Req_GetStatus req_stop_softap = 113;
+
+        CtrlMsg_Req_SetMode req_set_power_save_mode = 114;
+        CtrlMsg_Req_GetMode req_get_power_save_mode = 115;
+
+        CtrlMsg_Req_OTABegin req_ota_begin = 116;
+        CtrlMsg_Req_OTAWrite req_ota_write = 117;
+        CtrlMsg_Req_OTAEnd req_ota_end = 118;
+
+        CtrlMsg_Req_SetWifiMaxTxPower req_set_wifi_max_tx_power = 119;
+        CtrlMsg_Req_GetWifiCurrTxPower req_get_wifi_curr_tx_power = 120;
+        CtrlMsg_Req_ConfigHeartbeat req_config_heartbeat = 121;
+
+        /** Responses **/
+        CtrlMsg_Resp_GetMacAddress resp_get_mac_address = 201;
+        CtrlMsg_Resp_SetMacAddress resp_set_mac_address = 202;
+        CtrlMsg_Resp_GetMode resp_get_wifi_mode = 203;
+        CtrlMsg_Resp_SetMode resp_set_wifi_mode = 204;
+
+        CtrlMsg_Resp_ScanResult resp_scan_ap_list = 205;
+        CtrlMsg_Resp_GetAPConfig resp_get_ap_config = 206;
+        CtrlMsg_Resp_ConnectAP resp_connect_ap = 207;
+        CtrlMsg_Resp_GetStatus resp_disconnect_ap = 208;
+
+        CtrlMsg_Resp_GetSoftAPConfig resp_get_softap_config = 209;
+        CtrlMsg_Resp_SetSoftAPVendorSpecificIE resp_set_softap_vendor_specific_ie = 210;
+        CtrlMsg_Resp_StartSoftAP resp_start_softap = 211;
+        CtrlMsg_Resp_SoftAPConnectedSTA resp_softap_connected_stas_list = 212;
+        CtrlMsg_Resp_GetStatus resp_stop_softap = 213;
+
+        CtrlMsg_Resp_SetMode resp_set_power_save_mode = 214;
+        CtrlMsg_Resp_GetMode resp_get_power_save_mode = 215;
+
+        CtrlMsg_Resp_OTABegin resp_ota_begin = 216;
+        CtrlMsg_Resp_OTAWrite resp_ota_write = 217;
+        CtrlMsg_Resp_OTAEnd resp_ota_end = 218;
+        CtrlMsg_Resp_SetWifiMaxTxPower resp_set_wifi_max_tx_power = 219;
+        CtrlMsg_Resp_GetWifiCurrTxPower resp_get_wifi_curr_tx_power = 220;
+        CtrlMsg_Resp_ConfigHeartbeat resp_config_heartbeat = 221;
+
+        /** Notifications **/
+        CtrlMsg_Event_ESPInit event_esp_init = 301;
+        CtrlMsg_Event_Heartbeat event_heartbeat = 302;
+        CtrlMsg_Event_StationDisconnectFromAP event_station_disconnect_from_AP = 303;
+        CtrlMsg_Event_StationDisconnectFromESPSoftAP event_station_disconnect_from_ESP_SoftAP = 304;
+    }
+}
diff --git a/embassy-net-esp-hosted/src/fmt.rs b/embassy-net-esp-hosted/src/fmt.rs
new file mode 100644
index 000000000..91984bde1
--- /dev/null
+++ b/embassy-net-esp-hosted/src/fmt.rs
@@ -0,0 +1,257 @@
+#![macro_use]
+#![allow(unused_macros)]
+
+use core::fmt::{Debug, Display, LowerHex};
+
+#[cfg(all(feature = "defmt", feature = "log"))]
+compile_error!("You may not enable both `defmt` and `log` features.");
+
+macro_rules! assert {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert!($($x)*);
+        }
+    };
+}
+
+macro_rules! assert_eq {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert_eq!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert_eq!($($x)*);
+        }
+    };
+}
+
+macro_rules! assert_ne {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert_ne!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert_ne!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert_eq {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert_eq!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert_eq!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert_ne {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert_ne!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert_ne!($($x)*);
+        }
+    };
+}
+
+macro_rules! todo {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::todo!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::todo!($($x)*);
+        }
+    };
+}
+
+#[cfg(not(feature = "defmt"))]
+macro_rules! unreachable {
+    ($($x:tt)*) => {
+        ::core::unreachable!($($x)*)
+    };
+}
+
+#[cfg(feature = "defmt")]
+macro_rules! unreachable {
+    ($($x:tt)*) => {
+        ::defmt::unreachable!($($x)*);
+    };
+}
+
+macro_rules! panic {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::panic!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::panic!($($x)*);
+        }
+    };
+}
+
+macro_rules! trace {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::trace!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::trace!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! debug {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::debug!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! info {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::info!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::info!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! warn {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::warn!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::warn!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! error {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::error!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::error!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+#[cfg(feature = "defmt")]
+macro_rules! unwrap {
+    ($($x:tt)*) => {
+        ::defmt::unwrap!($($x)*)
+    };
+}
+
+#[cfg(not(feature = "defmt"))]
+macro_rules! unwrap {
+    ($arg:expr) => {
+        match $crate::fmt::Try::into_result($arg) {
+            ::core::result::Result::Ok(t) => t,
+            ::core::result::Result::Err(e) => {
+                ::core::panic!("unwrap of `{}` failed: {:?}", ::core::stringify!($arg), e);
+            }
+        }
+    };
+    ($arg:expr, $($msg:expr),+ $(,)? ) => {
+        match $crate::fmt::Try::into_result($arg) {
+            ::core::result::Result::Ok(t) => t,
+            ::core::result::Result::Err(e) => {
+                ::core::panic!("unwrap of `{}` failed: {}: {:?}", ::core::stringify!($arg), ::core::format_args!($($msg,)*), e);
+            }
+        }
+    }
+}
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+pub struct NoneError;
+
+pub trait Try {
+    type Ok;
+    type Error;
+    fn into_result(self) -> Result<Self::Ok, Self::Error>;
+}
+
+impl<T> Try for Option<T> {
+    type Ok = T;
+    type Error = NoneError;
+
+    #[inline]
+    fn into_result(self) -> Result<T, NoneError> {
+        self.ok_or(NoneError)
+    }
+}
+
+impl<T, E> Try for Result<T, E> {
+    type Ok = T;
+    type Error = E;
+
+    #[inline]
+    fn into_result(self) -> Self {
+        self
+    }
+}
+
+pub struct Bytes<'a>(pub &'a [u8]);
+
+impl<'a> Debug for Bytes<'a> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{:#02x?}", self.0)
+    }
+}
+
+impl<'a> Display for Bytes<'a> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{:#02x?}", self.0)
+    }
+}
+
+impl<'a> LowerHex for Bytes<'a> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{:#02x?}", self.0)
+    }
+}
+
+#[cfg(feature = "defmt")]
+impl<'a> defmt::Format for Bytes<'a> {
+    fn format(&self, fmt: defmt::Formatter) {
+        defmt::write!(fmt, "{:02x}", self.0)
+    }
+}
diff --git a/embassy-net-esp-hosted/src/ioctl.rs b/embassy-net-esp-hosted/src/ioctl.rs
new file mode 100644
index 000000000..59bdabf37
--- /dev/null
+++ b/embassy-net-esp-hosted/src/ioctl.rs
@@ -0,0 +1,119 @@
+use core::cell::{Cell, RefCell};
+use core::future::poll_fn;
+use core::task::{Poll, Waker};
+
+use embassy_sync::waitqueue::WakerRegistration;
+
+use crate::fmt::Bytes;
+
+#[derive(Clone, Copy)]
+pub struct PendingIoctl {
+    pub buf: *mut [u8],
+    pub req_len: usize,
+}
+
+#[derive(Clone, Copy)]
+enum IoctlStateInner {
+    Pending(PendingIoctl),
+    Sent { buf: *mut [u8] },
+    Done { resp_len: usize },
+}
+
+struct Wakers {
+    control: WakerRegistration,
+    runner: WakerRegistration,
+}
+
+impl Default for Wakers {
+    fn default() -> Self {
+        Self {
+            control: WakerRegistration::new(),
+            runner: WakerRegistration::new(),
+        }
+    }
+}
+
+pub struct IoctlState {
+    state: Cell<IoctlStateInner>,
+    wakers: RefCell<Wakers>,
+}
+
+impl IoctlState {
+    pub fn new() -> Self {
+        Self {
+            state: Cell::new(IoctlStateInner::Done { resp_len: 0 }),
+            wakers: Default::default(),
+        }
+    }
+
+    fn wake_control(&self) {
+        self.wakers.borrow_mut().control.wake();
+    }
+
+    fn register_control(&self, waker: &Waker) {
+        self.wakers.borrow_mut().control.register(waker);
+    }
+
+    fn wake_runner(&self) {
+        self.wakers.borrow_mut().runner.wake();
+    }
+
+    fn register_runner(&self, waker: &Waker) {
+        self.wakers.borrow_mut().runner.register(waker);
+    }
+
+    pub async fn wait_complete(&self) -> usize {
+        poll_fn(|cx| {
+            if let IoctlStateInner::Done { resp_len } = self.state.get() {
+                Poll::Ready(resp_len)
+            } else {
+                self.register_control(cx.waker());
+                Poll::Pending
+            }
+        })
+        .await
+    }
+
+    pub async fn wait_pending(&self) -> PendingIoctl {
+        let pending = poll_fn(|cx| {
+            if let IoctlStateInner::Pending(pending) = self.state.get() {
+                Poll::Ready(pending)
+            } else {
+                self.register_runner(cx.waker());
+                Poll::Pending
+            }
+        })
+        .await;
+
+        self.state.set(IoctlStateInner::Sent { buf: pending.buf });
+        pending
+    }
+
+    pub fn cancel_ioctl(&self) {
+        self.state.set(IoctlStateInner::Done { resp_len: 0 });
+    }
+
+    pub async fn do_ioctl(&self, buf: &mut [u8], req_len: usize) -> usize {
+        debug!("IOCTL Request: {:02x}", Bytes(&buf[..req_len]));
+
+        self.state.set(IoctlStateInner::Pending(PendingIoctl { buf, req_len }));
+        self.wake_runner();
+        self.wait_complete().await
+    }
+
+    pub fn ioctl_done(&self, response: &[u8]) {
+        if let IoctlStateInner::Sent { buf } = self.state.get() {
+            debug!("IOCTL Response: {:02x}", Bytes(response));
+
+            // TODO fix this
+            (unsafe { &mut *buf }[..response.len()]).copy_from_slice(response);
+
+            self.state.set(IoctlStateInner::Done {
+                resp_len: response.len(),
+            });
+            self.wake_control();
+        } else {
+            warn!("IOCTL Response but no pending Ioctl");
+        }
+    }
+}
diff --git a/embassy-net-esp-hosted/src/lib.rs b/embassy-net-esp-hosted/src/lib.rs
new file mode 100644
index 000000000..2cf05a7df
--- /dev/null
+++ b/embassy-net-esp-hosted/src/lib.rs
@@ -0,0 +1,300 @@
+#![no_std]
+
+use control::Control;
+use embassy_futures::select::{select3, Either3};
+use embassy_net_driver_channel as ch;
+use embassy_time::{Duration, Instant, Timer};
+use embedded_hal::digital::{InputPin, OutputPin};
+use embedded_hal_async::digital::Wait;
+use embedded_hal_async::spi::SpiDevice;
+use ioctl::IoctlState;
+
+use crate::ioctl::PendingIoctl;
+
+mod proto;
+
+// must be first
+mod fmt;
+
+mod control;
+mod ioctl;
+
+const MTU: usize = 1514;
+
+macro_rules! impl_bytes {
+    ($t:ident) => {
+        impl $t {
+            pub const SIZE: usize = core::mem::size_of::<Self>();
+
+            #[allow(unused)]
+            pub fn to_bytes(&self) -> [u8; Self::SIZE] {
+                unsafe { core::mem::transmute(*self) }
+            }
+
+            #[allow(unused)]
+            pub fn from_bytes(bytes: &[u8; Self::SIZE]) -> &Self {
+                let alignment = core::mem::align_of::<Self>();
+                assert_eq!(
+                    bytes.as_ptr().align_offset(alignment),
+                    0,
+                    "{} is not aligned",
+                    core::any::type_name::<Self>()
+                );
+                unsafe { core::mem::transmute(bytes) }
+            }
+
+            #[allow(unused)]
+            pub fn from_bytes_mut(bytes: &mut [u8; Self::SIZE]) -> &mut Self {
+                let alignment = core::mem::align_of::<Self>();
+                assert_eq!(
+                    bytes.as_ptr().align_offset(alignment),
+                    0,
+                    "{} is not aligned",
+                    core::any::type_name::<Self>()
+                );
+
+                unsafe { core::mem::transmute(bytes) }
+            }
+        }
+    };
+}
+
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, Default)]
+struct PayloadHeader {
+    /// InterfaceType on lower 4 bits, number on higher 4 bits.
+    if_type_and_num: u8,
+
+    /// Flags.
+    ///
+    /// bit 0: more fragments.
+    flags: u8,
+
+    len: u16,
+    offset: u16,
+    checksum: u16,
+    seq_num: u16,
+    reserved2: u8,
+
+    /// Packet type for HCI or PRIV interface, reserved otherwise
+    hci_priv_packet_type: u8,
+}
+impl_bytes!(PayloadHeader);
+
+#[repr(u8)]
+enum InterfaceType {
+    Sta = 0,
+    Ap = 1,
+    Serial = 2,
+    Hci = 3,
+    Priv = 4,
+    Test = 5,
+}
+
+const MAX_SPI_BUFFER_SIZE: usize = 1600;
+
+pub struct State {
+    ioctl_state: IoctlState,
+    ch: ch::State<MTU, 4, 4>,
+}
+
+impl State {
+    pub fn new() -> Self {
+        Self {
+            ioctl_state: IoctlState::new(),
+            ch: ch::State::new(),
+        }
+    }
+}
+
+pub type NetDriver<'a> = ch::Device<'a, MTU>;
+
+pub async fn new<'a, SPI, IN, OUT>(
+    state: &'a mut State,
+    spi: SPI,
+    handshake: IN,
+    ready: IN,
+    reset: OUT,
+) -> (NetDriver<'a>, Control<'a>, Runner<'a, SPI, IN, OUT>)
+where
+    SPI: SpiDevice,
+    IN: InputPin + Wait,
+    OUT: OutputPin,
+{
+    let (ch_runner, device) = ch::new(&mut state.ch, [0; 6]);
+    let state_ch = ch_runner.state_runner();
+
+    let mut runner = Runner {
+        ch: ch_runner,
+        ioctl_state: &state.ioctl_state,
+        next_seq: 1,
+        handshake,
+        ready,
+        reset,
+        spi,
+    };
+    runner.init().await;
+
+    (device, Control::new(state_ch, &state.ioctl_state), runner)
+}
+
+pub struct Runner<'a, SPI, IN, OUT> {
+    ch: ch::Runner<'a, MTU>,
+    ioctl_state: &'a IoctlState,
+
+    next_seq: u16,
+
+    spi: SPI,
+    handshake: IN,
+    ready: IN,
+    reset: OUT,
+}
+
+impl<'a, SPI, IN, OUT> Runner<'a, SPI, IN, OUT>
+where
+    SPI: SpiDevice,
+    IN: InputPin + Wait,
+    OUT: OutputPin,
+{
+    async fn init(&mut self) {}
+
+    pub async fn run(mut self) -> ! {
+        debug!("resetting...");
+        self.reset.set_low().unwrap();
+        Timer::after(Duration::from_millis(100)).await;
+        self.reset.set_high().unwrap();
+        Timer::after(Duration::from_millis(1000)).await;
+
+        let mut tx_buf = [0u8; MAX_SPI_BUFFER_SIZE];
+        let mut rx_buf = [0u8; MAX_SPI_BUFFER_SIZE];
+
+        loop {
+            self.handshake.wait_for_high().await.unwrap();
+
+            let ioctl = self.ioctl_state.wait_pending();
+            let tx = self.ch.tx_buf();
+            let ev = async { self.ready.wait_for_high().await.unwrap() };
+
+            match select3(ioctl, tx, ev).await {
+                Either3::First(PendingIoctl { buf, req_len }) => {
+                    tx_buf[12..24].copy_from_slice(b"\x01\x08\x00ctrlResp\x02");
+                    tx_buf[24..26].copy_from_slice(&(req_len as u16).to_le_bytes());
+                    tx_buf[26..][..req_len].copy_from_slice(&unsafe { &*buf }[..req_len]);
+
+                    let mut header = PayloadHeader {
+                        if_type_and_num: InterfaceType::Serial as _,
+                        len: (req_len + 14) as _,
+                        offset: PayloadHeader::SIZE as _,
+                        seq_num: self.next_seq,
+                        ..Default::default()
+                    };
+                    self.next_seq = self.next_seq.wrapping_add(1);
+
+                    // Calculate checksum
+                    tx_buf[0..12].copy_from_slice(&header.to_bytes());
+                    header.checksum = checksum(&tx_buf[..26 + req_len]);
+                    tx_buf[0..12].copy_from_slice(&header.to_bytes());
+
+                    debug!("====== SENDING IOCTL");
+                }
+                Either3::Second(packet) => {
+                    tx_buf[12..][..packet.len()].copy_from_slice(packet);
+
+                    let mut header = PayloadHeader {
+                        if_type_and_num: InterfaceType::Sta as _,
+                        len: packet.len() as _,
+                        offset: PayloadHeader::SIZE as _,
+                        seq_num: self.next_seq,
+                        ..Default::default()
+                    };
+                    self.next_seq = self.next_seq.wrapping_add(1);
+
+                    // Calculate checksum
+                    tx_buf[0..12].copy_from_slice(&header.to_bytes());
+                    header.checksum = checksum(&tx_buf[..12 + packet.len()]);
+                    tx_buf[0..12].copy_from_slice(&header.to_bytes());
+
+                    self.ch.tx_done();
+                }
+                Either3::Third(()) => {
+                    tx_buf[..PayloadHeader::SIZE].fill(0);
+                }
+            }
+
+            if tx_buf[0] != 0 {
+                trace!("tx: {:02x}", &tx_buf[..40]);
+            }
+
+            self.spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
+            let delay_until = Instant::now() + Duration::from_millis(1);
+            self.handle_rx(&mut rx_buf);
+            Timer::at(delay_until).await;
+        }
+    }
+
+    fn handle_rx(&mut self, buf: &mut [u8]) {
+        trace!("rx: {:02x}", &buf[..40]);
+
+        let buf_len = buf.len();
+        let h = PayloadHeader::from_bytes_mut((&mut buf[..PayloadHeader::SIZE]).try_into().unwrap());
+
+        if h.len == 0 || h.offset as usize != PayloadHeader::SIZE {
+            return;
+        }
+
+        let payload_len = h.len as usize;
+        if buf_len < PayloadHeader::SIZE + payload_len {
+            warn!("rx: len too big");
+            return;
+        }
+
+        let if_type_and_num = h.if_type_and_num;
+        let want_checksum = h.checksum;
+        h.checksum = 0;
+        let got_checksum = checksum(&buf[..PayloadHeader::SIZE + payload_len]);
+        if want_checksum != got_checksum {
+            warn!("rx: bad checksum. Got {:04x}, want {:04x}", got_checksum, want_checksum);
+            return;
+        }
+
+        let payload = &mut buf[PayloadHeader::SIZE..][..payload_len];
+
+        match if_type_and_num & 0x0f {
+            // STA
+            0 => match self.ch.try_rx_buf() {
+                Some(buf) => {
+                    buf[..payload.len()].copy_from_slice(payload);
+                    self.ch.rx_done(payload.len())
+                }
+                None => warn!("failed to push rxd packet to the channel."),
+            },
+            // serial
+            2 => {
+                debug!("serial rx: {:02x}", payload);
+                if payload.len() < 14 {
+                    warn!("serial rx: too short");
+                    return;
+                }
+                if &payload[..12] != b"\x01\x08\x00ctrlResp\x02" {
+                    warn!("serial rx: bad tlv");
+                    return;
+                }
+                let len = u16::from_le_bytes(payload[12..14].try_into().unwrap()) as usize;
+                if payload.len() < 14 + len {
+                    warn!("serial rx: too short 2");
+                    return;
+                }
+                self.ioctl_state.ioctl_done(&payload[14..][..len]);
+            }
+            _ => warn!("unknown iftype {}", if_type_and_num),
+        }
+    }
+}
+
+fn checksum(buf: &[u8]) -> u16 {
+    let mut res = 0u16;
+    for &b in buf {
+        res = res.wrapping_add(b as _);
+    }
+    res
+}
diff --git a/embassy-net-esp-hosted/src/proto.rs b/embassy-net-esp-hosted/src/proto.rs
new file mode 100644
index 000000000..e105e393c
--- /dev/null
+++ b/embassy-net-esp-hosted/src/proto.rs
@@ -0,0 +1,598 @@
+use heapless::{String, Vec};
+
+/// internal supporting structures for CtrlMsg
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct ScanResult {
+    #[noproto(tag = "1")]
+    pub ssid: String<32>,
+    #[noproto(tag = "2")]
+    pub chnl: u32,
+    #[noproto(tag = "3")]
+    pub rssi: u32,
+    #[noproto(tag = "4")]
+    pub bssid: String<32>,
+    #[noproto(tag = "5")]
+    pub sec_prot: CtrlWifiSecProt,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct ConnectedStaList {
+    #[noproto(tag = "1")]
+    pub mac: String<32>,
+    #[noproto(tag = "2")]
+    pub rssi: u32,
+}
+/// * Req/Resp structure *
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetMacAddress {
+    #[noproto(tag = "1")]
+    pub mode: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetMacAddress {
+    #[noproto(tag = "1")]
+    pub mac: String<32>,
+    #[noproto(tag = "2")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetMode {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetMode {
+    #[noproto(tag = "1")]
+    pub mode: u32,
+    #[noproto(tag = "2")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqSetMode {
+    #[noproto(tag = "1")]
+    pub mode: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespSetMode {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetStatus {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetStatus {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqSetMacAddress {
+    #[noproto(tag = "1")]
+    pub mac: String<32>,
+    #[noproto(tag = "2")]
+    pub mode: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespSetMacAddress {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetApConfig {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetApConfig {
+    #[noproto(tag = "1")]
+    pub ssid: String<32>,
+    #[noproto(tag = "2")]
+    pub bssid: String<32>,
+    #[noproto(tag = "3")]
+    pub rssi: u32,
+    #[noproto(tag = "4")]
+    pub chnl: u32,
+    #[noproto(tag = "5")]
+    pub sec_prot: CtrlWifiSecProt,
+    #[noproto(tag = "6")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqConnectAp {
+    #[noproto(tag = "1")]
+    pub ssid: String<32>,
+    #[noproto(tag = "2")]
+    pub pwd: String<32>,
+    #[noproto(tag = "3")]
+    pub bssid: String<32>,
+    #[noproto(tag = "4")]
+    pub is_wpa3_supported: bool,
+    #[noproto(tag = "5")]
+    pub listen_interval: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespConnectAp {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+    #[noproto(tag = "2")]
+    pub mac: String<32>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetSoftApConfig {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetSoftApConfig {
+    #[noproto(tag = "1")]
+    pub ssid: String<32>,
+    #[noproto(tag = "2")]
+    pub pwd: String<32>,
+    #[noproto(tag = "3")]
+    pub chnl: u32,
+    #[noproto(tag = "4")]
+    pub sec_prot: CtrlWifiSecProt,
+    #[noproto(tag = "5")]
+    pub max_conn: u32,
+    #[noproto(tag = "6")]
+    pub ssid_hidden: bool,
+    #[noproto(tag = "7")]
+    pub bw: u32,
+    #[noproto(tag = "8")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqStartSoftAp {
+    #[noproto(tag = "1")]
+    pub ssid: String<32>,
+    #[noproto(tag = "2")]
+    pub pwd: String<32>,
+    #[noproto(tag = "3")]
+    pub chnl: u32,
+    #[noproto(tag = "4")]
+    pub sec_prot: CtrlWifiSecProt,
+    #[noproto(tag = "5")]
+    pub max_conn: u32,
+    #[noproto(tag = "6")]
+    pub ssid_hidden: bool,
+    #[noproto(tag = "7")]
+    pub bw: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespStartSoftAp {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+    #[noproto(tag = "2")]
+    pub mac: String<32>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqScanResult {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespScanResult {
+    #[noproto(tag = "1")]
+    pub count: u32,
+    #[noproto(repeated, tag = "2")]
+    pub entries: Vec<ScanResult, 16>,
+    #[noproto(tag = "3")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqSoftApConnectedSta {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespSoftApConnectedSta {
+    #[noproto(tag = "1")]
+    pub num: u32,
+    #[noproto(repeated, tag = "2")]
+    pub stations: Vec<ConnectedStaList, 16>,
+    #[noproto(tag = "3")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqOtaBegin {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespOtaBegin {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqOtaWrite {
+    #[noproto(tag = "1")]
+    pub ota_data: Vec<u8, 1024>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespOtaWrite {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqOtaEnd {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespOtaEnd {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqVendorIeData {
+    #[noproto(tag = "1")]
+    pub element_id: u32,
+    #[noproto(tag = "2")]
+    pub length: u32,
+    #[noproto(tag = "3")]
+    pub vendor_oui: Vec<u8, 8>,
+    #[noproto(tag = "4")]
+    pub vendor_oui_type: u32,
+    #[noproto(tag = "5")]
+    pub payload: Vec<u8, 64>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqSetSoftApVendorSpecificIe {
+    #[noproto(tag = "1")]
+    pub enable: bool,
+    #[noproto(tag = "2")]
+    pub r#type: CtrlVendorIeType,
+    #[noproto(tag = "3")]
+    pub idx: CtrlVendorIeid,
+    #[noproto(optional, tag = "4")]
+    pub vendor_ie_data: Option<CtrlMsgReqVendorIeData>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespSetSoftApVendorSpecificIe {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqSetWifiMaxTxPower {
+    #[noproto(tag = "1")]
+    pub wifi_max_tx_power: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespSetWifiMaxTxPower {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqGetWifiCurrTxPower {}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespGetWifiCurrTxPower {
+    #[noproto(tag = "1")]
+    pub wifi_curr_tx_power: u32,
+    #[noproto(tag = "2")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgReqConfigHeartbeat {
+    #[noproto(tag = "1")]
+    pub enable: bool,
+    #[noproto(tag = "2")]
+    pub duration: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgRespConfigHeartbeat {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+/// * Event structure *
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgEventEspInit {
+    #[noproto(tag = "1")]
+    pub init_data: Vec<u8, 64>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgEventHeartbeat {
+    #[noproto(tag = "1")]
+    pub hb_num: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgEventStationDisconnectFromAp {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsgEventStationDisconnectFromEspSoftAp {
+    #[noproto(tag = "1")]
+    pub resp: u32,
+    #[noproto(tag = "2")]
+    pub mac: String<32>,
+}
+
+#[derive(Debug, Default, Clone, Eq, PartialEq, noproto::Message)]
+pub struct CtrlMsg {
+    /// msg_type could be req, resp or Event
+    #[noproto(tag = "1")]
+    pub msg_type: CtrlMsgType,
+    /// msg id
+    #[noproto(tag = "2")]
+    pub msg_id: CtrlMsgId,
+    /// union of all msg ids
+    #[noproto(
+        oneof,
+        tags = "101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 301, 302, 303, 304"
+    )]
+    pub payload: Option<CtrlMsgPayload>,
+}
+
+/// union of all msg ids
+#[derive(Debug, Clone, Eq, PartialEq, noproto::Oneof)]
+pub enum CtrlMsgPayload {
+    /// * Requests *
+    #[noproto(tag = "101")]
+    ReqGetMacAddress(CtrlMsgReqGetMacAddress),
+    #[noproto(tag = "102")]
+    ReqSetMacAddress(CtrlMsgReqSetMacAddress),
+    #[noproto(tag = "103")]
+    ReqGetWifiMode(CtrlMsgReqGetMode),
+    #[noproto(tag = "104")]
+    ReqSetWifiMode(CtrlMsgReqSetMode),
+    #[noproto(tag = "105")]
+    ReqScanApList(CtrlMsgReqScanResult),
+    #[noproto(tag = "106")]
+    ReqGetApConfig(CtrlMsgReqGetApConfig),
+    #[noproto(tag = "107")]
+    ReqConnectAp(CtrlMsgReqConnectAp),
+    #[noproto(tag = "108")]
+    ReqDisconnectAp(CtrlMsgReqGetStatus),
+    #[noproto(tag = "109")]
+    ReqGetSoftapConfig(CtrlMsgReqGetSoftApConfig),
+    #[noproto(tag = "110")]
+    ReqSetSoftapVendorSpecificIe(CtrlMsgReqSetSoftApVendorSpecificIe),
+    #[noproto(tag = "111")]
+    ReqStartSoftap(CtrlMsgReqStartSoftAp),
+    #[noproto(tag = "112")]
+    ReqSoftapConnectedStasList(CtrlMsgReqSoftApConnectedSta),
+    #[noproto(tag = "113")]
+    ReqStopSoftap(CtrlMsgReqGetStatus),
+    #[noproto(tag = "114")]
+    ReqSetPowerSaveMode(CtrlMsgReqSetMode),
+    #[noproto(tag = "115")]
+    ReqGetPowerSaveMode(CtrlMsgReqGetMode),
+    #[noproto(tag = "116")]
+    ReqOtaBegin(CtrlMsgReqOtaBegin),
+    #[noproto(tag = "117")]
+    ReqOtaWrite(CtrlMsgReqOtaWrite),
+    #[noproto(tag = "118")]
+    ReqOtaEnd(CtrlMsgReqOtaEnd),
+    #[noproto(tag = "119")]
+    ReqSetWifiMaxTxPower(CtrlMsgReqSetWifiMaxTxPower),
+    #[noproto(tag = "120")]
+    ReqGetWifiCurrTxPower(CtrlMsgReqGetWifiCurrTxPower),
+    #[noproto(tag = "121")]
+    ReqConfigHeartbeat(CtrlMsgReqConfigHeartbeat),
+    /// * Responses *
+    #[noproto(tag = "201")]
+    RespGetMacAddress(CtrlMsgRespGetMacAddress),
+    #[noproto(tag = "202")]
+    RespSetMacAddress(CtrlMsgRespSetMacAddress),
+    #[noproto(tag = "203")]
+    RespGetWifiMode(CtrlMsgRespGetMode),
+    #[noproto(tag = "204")]
+    RespSetWifiMode(CtrlMsgRespSetMode),
+    #[noproto(tag = "205")]
+    RespScanApList(CtrlMsgRespScanResult),
+    #[noproto(tag = "206")]
+    RespGetApConfig(CtrlMsgRespGetApConfig),
+    #[noproto(tag = "207")]
+    RespConnectAp(CtrlMsgRespConnectAp),
+    #[noproto(tag = "208")]
+    RespDisconnectAp(CtrlMsgRespGetStatus),
+    #[noproto(tag = "209")]
+    RespGetSoftapConfig(CtrlMsgRespGetSoftApConfig),
+    #[noproto(tag = "210")]
+    RespSetSoftapVendorSpecificIe(CtrlMsgRespSetSoftApVendorSpecificIe),
+    #[noproto(tag = "211")]
+    RespStartSoftap(CtrlMsgRespStartSoftAp),
+    #[noproto(tag = "212")]
+    RespSoftapConnectedStasList(CtrlMsgRespSoftApConnectedSta),
+    #[noproto(tag = "213")]
+    RespStopSoftap(CtrlMsgRespGetStatus),
+    #[noproto(tag = "214")]
+    RespSetPowerSaveMode(CtrlMsgRespSetMode),
+    #[noproto(tag = "215")]
+    RespGetPowerSaveMode(CtrlMsgRespGetMode),
+    #[noproto(tag = "216")]
+    RespOtaBegin(CtrlMsgRespOtaBegin),
+    #[noproto(tag = "217")]
+    RespOtaWrite(CtrlMsgRespOtaWrite),
+    #[noproto(tag = "218")]
+    RespOtaEnd(CtrlMsgRespOtaEnd),
+    #[noproto(tag = "219")]
+    RespSetWifiMaxTxPower(CtrlMsgRespSetWifiMaxTxPower),
+    #[noproto(tag = "220")]
+    RespGetWifiCurrTxPower(CtrlMsgRespGetWifiCurrTxPower),
+    #[noproto(tag = "221")]
+    RespConfigHeartbeat(CtrlMsgRespConfigHeartbeat),
+    /// * Notifications *
+    #[noproto(tag = "301")]
+    EventEspInit(CtrlMsgEventEspInit),
+    #[noproto(tag = "302")]
+    EventHeartbeat(CtrlMsgEventHeartbeat),
+    #[noproto(tag = "303")]
+    EventStationDisconnectFromAp(CtrlMsgEventStationDisconnectFromAp),
+    #[noproto(tag = "304")]
+    EventStationDisconnectFromEspSoftAp(CtrlMsgEventStationDisconnectFromEspSoftAp),
+}
+
+/// Enums similar to ESP IDF
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlVendorIeType {
+    #[default]
+    Beacon = 0,
+    ProbeReq = 1,
+    ProbeResp = 2,
+    AssocReq = 3,
+    AssocResp = 4,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlVendorIeid {
+    #[default]
+    Id0 = 0,
+    Id1 = 1,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlWifiMode {
+    #[default]
+    None = 0,
+    Sta = 1,
+    Ap = 2,
+    Apsta = 3,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlWifiBw {
+    #[default]
+    BwInvalid = 0,
+    Ht20 = 1,
+    Ht40 = 2,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlWifiPowerSave {
+    #[default]
+    PsInvalid = 0,
+    MinModem = 1,
+    MaxModem = 2,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlWifiSecProt {
+    #[default]
+    Open = 0,
+    Wep = 1,
+    WpaPsk = 2,
+    Wpa2Psk = 3,
+    WpaWpa2Psk = 4,
+    Wpa2Enterprise = 5,
+    Wpa3Psk = 6,
+    Wpa2Wpa3Psk = 7,
+}
+
+/// enums for Control path
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlStatus {
+    #[default]
+    Connected = 0,
+    NotConnected = 1,
+    NoApFound = 2,
+    ConnectionFail = 3,
+    InvalidArgument = 4,
+    OutOfRange = 5,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlMsgType {
+    #[default]
+    MsgTypeInvalid = 0,
+    Req = 1,
+    Resp = 2,
+    Event = 3,
+    MsgTypeMax = 4,
+}
+
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash, PartialOrd, Ord, noproto::Enumeration)]
+#[repr(u32)]
+pub enum CtrlMsgId {
+    #[default]
+    MsgIdInvalid = 0,
+    /// * Request Msgs *
+    ReqBase = 100,
+    ReqGetMacAddress = 101,
+    ReqSetMacAddress = 102,
+    ReqGetWifiMode = 103,
+    ReqSetWifiMode = 104,
+    ReqGetApScanList = 105,
+    ReqGetApConfig = 106,
+    ReqConnectAp = 107,
+    ReqDisconnectAp = 108,
+    ReqGetSoftApConfig = 109,
+    ReqSetSoftApVendorSpecificIe = 110,
+    ReqStartSoftAp = 111,
+    ReqGetSoftApConnectedStaList = 112,
+    ReqStopSoftAp = 113,
+    ReqSetPowerSaveMode = 114,
+    ReqGetPowerSaveMode = 115,
+    ReqOtaBegin = 116,
+    ReqOtaWrite = 117,
+    ReqOtaEnd = 118,
+    ReqSetWifiMaxTxPower = 119,
+    ReqGetWifiCurrTxPower = 120,
+    ReqConfigHeartbeat = 121,
+    /// Add new control path command response before Req_Max
+    /// and update Req_Max
+    ReqMax = 122,
+    /// * Response Msgs *
+    RespBase = 200,
+    RespGetMacAddress = 201,
+    RespSetMacAddress = 202,
+    RespGetWifiMode = 203,
+    RespSetWifiMode = 204,
+    RespGetApScanList = 205,
+    RespGetApConfig = 206,
+    RespConnectAp = 207,
+    RespDisconnectAp = 208,
+    RespGetSoftApConfig = 209,
+    RespSetSoftApVendorSpecificIe = 210,
+    RespStartSoftAp = 211,
+    RespGetSoftApConnectedStaList = 212,
+    RespStopSoftAp = 213,
+    RespSetPowerSaveMode = 214,
+    RespGetPowerSaveMode = 215,
+    RespOtaBegin = 216,
+    RespOtaWrite = 217,
+    RespOtaEnd = 218,
+    RespSetWifiMaxTxPower = 219,
+    RespGetWifiCurrTxPower = 220,
+    RespConfigHeartbeat = 221,
+    /// Add new control path command response before Resp_Max
+    /// and update Resp_Max
+    RespMax = 222,
+    /// * Event Msgs *
+    EventBase = 300,
+    EventEspInit = 301,
+    EventHeartbeat = 302,
+    EventStationDisconnectFromAp = 303,
+    EventStationDisconnectFromEspSoftAp = 304,
+    /// Add new control path command notification before Event_Max
+    /// and update Event_Max
+    EventMax = 305,
+}
diff --git a/examples/nrf52840/Cargo.toml b/examples/nrf52840/Cargo.toml
index 6627b7861..7c9d48bad 100644
--- a/examples/nrf52840/Cargo.toml
+++ b/examples/nrf52840/Cargo.toml
@@ -22,6 +22,7 @@ embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["ti
 lora-phy = { version = "1", optional = true }
 lorawan-device = { version = "0.10.0", default-features = false, features = ["async", "external-lora-phy"], optional = true }
 lorawan = { version = "0.7.3", default-features = false, features = ["default-crypto"], optional = true }
+embassy-net-esp-hosted = { version = "0.1.0", path = "../../embassy-net-esp-hosted", features = ["defmt"] }
 
 defmt = "0.3"
 defmt-rtt = "0.4"
@@ -35,3 +36,4 @@ rand = { version = "0.8.4", default-features = false }
 embedded-storage = "0.3.0"
 usbd-hid = "0.6.0"
 serde = { version = "1.0.136", default-features = false }
+embedded-hal-async = "0.2.0-alpha.1"
diff --git a/examples/nrf52840/src/bin/wifi_esp_hosted.rs b/examples/nrf52840/src/bin/wifi_esp_hosted.rs
new file mode 100644
index 000000000..401dbd33c
--- /dev/null
+++ b/examples/nrf52840/src/bin/wifi_esp_hosted.rs
@@ -0,0 +1,143 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::{info, unwrap, warn};
+use embassy_executor::Spawner;
+use embassy_net::tcp::TcpSocket;
+use embassy_net::{Stack, StackResources};
+use embassy_nrf::gpio::{AnyPin, Input, Level, Output, OutputDrive, Pin, Pull};
+use embassy_nrf::rng::Rng;
+use embassy_nrf::spim::{self, Spim};
+use embassy_nrf::{bind_interrupts, peripherals};
+use embassy_time::{Duration, Timer};
+use embedded_hal_async::spi::ExclusiveDevice;
+use embedded_io::asynch::Write;
+use static_cell::make_static;
+use {defmt_rtt as _, embassy_net_esp_hosted as hosted, panic_probe as _};
+
+bind_interrupts!(struct Irqs {
+    SPIM3 => spim::InterruptHandler<peripherals::SPI3>;
+    RNG => embassy_nrf::rng::InterruptHandler<peripherals::RNG>;
+});
+
+#[embassy_executor::task]
+async fn wifi_task(
+    runner: hosted::Runner<
+        'static,
+        ExclusiveDevice<Spim<'static, peripherals::SPI3>, Output<'static, peripherals::P0_31>>,
+        Input<'static, AnyPin>,
+        Output<'static, peripherals::P1_03>,
+    >,
+) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(stack: &'static Stack<hosted::NetDriver<'static>>) -> ! {
+    stack.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    info!("Hello World!");
+
+    let p = embassy_nrf::init(Default::default());
+
+    let miso = p.P0_28;
+    let sck = p.P0_29;
+    let mosi = p.P0_30;
+    let cs = Output::new(p.P0_31, Level::High, OutputDrive::HighDrive);
+    let handshake = Input::new(p.P1_01.degrade(), Pull::Up);
+    let ready = Input::new(p.P1_02.degrade(), Pull::None);
+    let reset = Output::new(p.P1_03, Level::Low, OutputDrive::Standard);
+
+    let mut config = spim::Config::default();
+    config.frequency = spim::Frequency::M1;
+    config.mode = spim::MODE_2; // !!!
+    let spi = spim::Spim::new(p.SPI3, Irqs, sck, miso, mosi, config);
+    let spi = ExclusiveDevice::new(spi, cs);
+
+    let (device, mut control, runner) = embassy_net_esp_hosted::new(
+        make_static!(embassy_net_esp_hosted::State::new()),
+        spi,
+        handshake,
+        ready,
+        reset,
+    )
+    .await;
+
+    unwrap!(spawner.spawn(wifi_task(runner)));
+
+    // TODO: wait for ESP_INIT event instead of hardcoding delay.
+    Timer::after(Duration::from_secs(3)).await;
+
+    control.init().await;
+    control.join(env!("WIFI_NETWORK"), env!("WIFI_PASSWORD")).await;
+
+    let config = embassy_net::Config::dhcpv4(Default::default());
+    // let config = embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
+    //    address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
+    //    dns_servers: Vec::new(),
+    //    gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
+    // });
+
+    // Generate random seed
+    let mut rng = Rng::new(p.RNG, Irqs);
+    let mut seed = [0; 8];
+    rng.blocking_fill_bytes(&mut seed);
+    let seed = u64::from_le_bytes(seed);
+
+    // Init network stack
+    let stack = &*make_static!(Stack::new(
+        device,
+        config,
+        make_static!(StackResources::<2>::new()),
+        seed
+    ));
+
+    unwrap!(spawner.spawn(net_task(stack)));
+
+    // And now we can use it!
+
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut buf = [0; 4096];
+
+    loop {
+        let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
+        socket.set_timeout(Some(embassy_time::Duration::from_secs(10)));
+
+        info!("Listening on TCP:1234...");
+        if let Err(e) = socket.accept(1234).await {
+            warn!("accept error: {:?}", e);
+            continue;
+        }
+
+        info!("Received connection from {:?}", socket.remote_endpoint());
+
+        loop {
+            let n = match socket.read(&mut buf).await {
+                Ok(0) => {
+                    warn!("read EOF");
+                    break;
+                }
+                Ok(n) => n,
+                Err(e) => {
+                    warn!("read error: {:?}", e);
+                    break;
+                }
+            };
+
+            info!("rxd {:02x}", &buf[..n]);
+
+            match socket.write_all(&buf[..n]).await {
+                Ok(()) => {}
+                Err(e) => {
+                    warn!("write error: {:?}", e);
+                    break;
+                }
+            };
+        }
+    }
+}