chore: cargo update

Cargo.lock

@@ -86,7 +86,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "211713d2e9fb4793ce4360a712c0764264aff6be48932ccf02ca2a331c0436a9"
 dependencies = [
  "btuuid",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "embassy-sync 0.8.0",
  "embedded-io 0.7.1",
  "embedded-io-async 0.7.0",
@@ -185,7 +185,7 @@ name = "cover-theif"
 version = "0.1.0"
 dependencies = [
  "critical-section",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "embassy-executor",
  "embassy-net",
  "embassy-time",
@@ -197,6 +197,10 @@ dependencies = [
  "esp-radio",
  "esp-rtos",
  "picoserve",
+ "portable-atomic",
+ "sntpc",
+ "sntpc-net-embassy",
+ "sntpc-time-embassy",
  "static_cell",
 ]
 
@@ -334,14 +338,14 @@ version = "0.3.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0963443817029b2024136fc4dd07a5107eb8f977eaf18fcd1fdeb11306b64ad"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
 name = "defmt"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6e524506490a1953d237cb87b1cfc1e46f88c18f10a22dfe0f507dc6bfc7f7f"
+checksum = "e2953bfe4f93bbd20cc71198842756f77d161884c99ebbabc41d80231ded88d1"
 dependencies = [
  "bitflags 1.3.2",
  "defmt-macros",
@@ -349,12 +353,11 @@ dependencies = [
 
 [[package]]
 name = "defmt-macros"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0a27770e9c8f719a79d8b638281f4d828f77d8fd61e0bd94451b9b85e576a0b"
+checksum = "bad9c72e7ca2137e0dc3813245a0d282fd6daad32fd800af018306a9169b5fe8"
 dependencies = [
  "defmt-parser",
- "proc-macro-error2",
  "proc-macro2",
  "quote",
  "syn 2.0.117",
@@ -444,7 +447,7 @@ checksum = "5d0d3b15c9d7dc4fec1d8cb77112472fb008b3b28c51ad23838d83587a6d2f1e"
 dependencies = [
  "cordyceps",
  "critical-section",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-executor-macros",
  "embassy-executor-timer-queue",
@@ -474,7 +477,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc2d050bdc5c21e0862a89256ed8029ae6c290a93aecefc73084b3002cdebb01"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -492,7 +495,7 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "347bc855bdbdf50ed9c5a1d80e8204badb0ba149b8732dde38e1e9708ed9d313"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-net-driver",
  "embassy-sync 0.8.0",
@@ -549,7 +552,7 @@ checksum = "7bbd85cf5a5ae56bdf26f618364af642d1d0a4e245cdd75cd9aabda382f65a81"
 dependencies = [
  "cfg-if",
  "critical-section",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "embedded-io-async 0.7.0",
  "futures-core",
  "futures-sink",
@@ -564,7 +567,7 @@ checksum = "592b0c143ec626e821d4d90da51a2bd91d559d6c442b7c74a47d368c9e23d97a"
 dependencies = [
  "cfg-if",
  "critical-section",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-time-driver",
  "embedded-hal 0.2.7",
@@ -641,7 +644,7 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9eb1aa714776b75c7e67e1da744b81a129b3ff919c8712b5e1b32252c1f07cc7"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -660,7 +663,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2564b9f813c544241430e147d8bc454815ef9ac998878d30cc3055449f7fd4c0"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "embedded-io 0.7.1",
 ]
 
@@ -704,7 +707,7 @@ version = "1.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "839c4174b41e75c8f7306110b2c51996a293b8d1d850edd529011841d9fede7d"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "enumset_derive",
 ]
 
@@ -734,7 +737,7 @@ checksum = "46ced060d4085858283df950b80a4da2348e1707d7d07b1e966308582dae79f5"
 dependencies = [
  "allocator-api2",
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "enumset",
  "esp-config",
@@ -750,7 +753,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37950e24b2dfd98f1581102d1798281d4d9547af881e6bffc2c2b534c026ec8f"
 dependencies = [
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "esp-config",
  "esp-metadata-generated",
@@ -767,7 +770,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35ffc117c3a9859835d89d0e90f5ee9886ce2264a71a849a7a22ab5308f6653c"
 dependencies = [
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embedded-storage",
  "esp-config",
@@ -802,7 +805,7 @@ dependencies = [
  "bytemuck",
  "cfg-if",
  "critical-section",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "delegate",
  "digest",
  "document-features",
@@ -875,7 +878,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e7c0a29815cd105ae1a02f3d0c6e7aafda9504a41effae17fac4c3f827719228"
 dependencies = [
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-sync 0.8.0",
  "esp-config",
@@ -892,7 +895,7 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42dee1e9ac7c3539bf6464db1707b0edd7557168f98278cf3c84fe70e63c6ce6"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "esp-metadata-generated",
  "esp-sync",
@@ -909,7 +912,7 @@ dependencies = [
  "allocator-api2",
  "bt-hci",
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "docsplay",
  "document-features",
  "embassy-net-driver",
@@ -961,7 +964,7 @@ version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "66a814ae91452de56a5e74f69aebfee40579511756837d3774a56fd24cf0ab79"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "riscv",
  "riscv-rt",
@@ -987,7 +990,7 @@ checksum = "551f90766e1527edaa0c91e8d559e9e2a60397b545e93357ac61fb31845e5712"
 dependencies = [
  "allocator-api2",
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-executor",
  "embassy-sync 0.8.0",
@@ -1013,7 +1016,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4736bfbbb9e3f6353344e14fc61b6d18d3b877c3286914cf8c0a037be0ed224"
 dependencies = [
  "cfg-if",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "embassy-sync 0.6.2",
  "embassy-sync 0.7.2",
@@ -1029,7 +1032,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2556f38f5292d9735d4e156e276815fc001c9a0a2be0544a575c5fb867129d24"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1038,7 +1041,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4b3eb3435dae84de611d4384639e61eed862818223e93fa70c525cb6a70127f"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1047,7 +1050,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b290846b53db9a3965866964260220b67f2c41cc2dbc0b377e7136239fe168a7"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1056,7 +1059,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57649401fc2f906a16e2268de88693724a125adcd0eba89b594a157affcee2d5"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1065,7 +1068,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5cf1be2e311f4b4e75b5507c6b007ffc3fcb8c6cb57f83cc6a9569ecdcf58484"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1074,7 +1077,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a9a7f1bc51e7026c3012cda4f11d8799e5e0c0bb3be85797462219def6c26e"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1083,7 +1086,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d8321f44b57d8112cbd8607cc83b85783b9195289acb45532728e3e229e7786"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
 ]
 
 [[package]]
@@ -1092,7 +1095,7 @@ version = "0.40.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5726e07689249d1a2cb7c492077bc424837fb68a64f7eb5d46569325352e9428"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1102,7 +1105,7 @@ version = "0.29.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5ef0b623533bbaa37e348c18b6b41cfd5b47c3cb64a4b9e44f0295941d62aa2e"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1112,7 +1115,7 @@ version = "0.32.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "21e89ed62cf6c043a6d29c520b02a13b359ec8a75d67b65d4330ed717d15fe97"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1122,7 +1125,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a6f8ba56195df10224263c60ceb93b4578450019ee838b7338039a281117cb02"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1132,7 +1135,7 @@ version = "0.23.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c58f34ff2633968c12125efc7f4f8f101078d5d34c7cb60eab82268db20986f9"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1142,7 +1145,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a926616351b1edfdb50b7ea6451a8dff0c7515c6ceb687063af7d32b117ec0d"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1152,7 +1155,7 @@ version = "0.19.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c5bab026020ed4606ce113b6fde598dbc48f7eefcc46e9469ece77cc2b1aa4be"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1162,7 +1165,7 @@ version = "0.31.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0ad6f21cdf6ec7b06b7f7e0fbe51f0d975fd6a5fa67c3f8a5a910d3981af531"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1172,7 +1175,7 @@ version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b4b8c4e4d9f187553ecdb7173edec7b2deb2beea106eedefecdb1654b8ee25a"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "vcell",
 ]
 
@@ -1321,7 +1324,7 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25ba4bd83f9415b58b4ed8dc5714c76e626a105be4646c02630ad730ad3b5aa4"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "hash32 0.3.1",
  "stable_deref_trait",
 ]
@@ -1554,12 +1557,12 @@ checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
 [[package]]
 name = "picoserve"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e4976908c758efc04289ad266181f22e252b67daac2710581da9f5aa7a3207a"
+checksum = "4aaf10aff74fc2b847b186ae037e91412f5b17a5224ba162a2c1bb41f3f48f86"
 dependencies = [
  "const-sha1",
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "embassy-net",
  "embassy-time",
  "embedded-io-async 0.7.0",
@@ -1611,9 +1614,9 @@ checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
 [[package]]
 name = "portable-atomic"
-version = "1.13.1"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49"
+checksum = "05c8b63e8d9609db387f0324918f81d68fe27748f084ef092fb35954d0539a85"
 
 [[package]]
 name = "portable-atomic-util"
@@ -1654,28 +1657,6 @@ dependencies = [
  "toml_edit",
 ]
 
-[[package]]
-name = "proc-macro-error-attr2"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5"
-dependencies = [
- "proc-macro2",
- "quote",
-]
-
-[[package]]
-name = "proc-macro-error2"
-version = "2.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802"
-dependencies = [
- "proc-macro-error-attr2",
- "proc-macro2",
- "quote",
- "syn 2.0.117",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.106"
@@ -1765,7 +1746,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d07b9f3a0eff773fc4df11f44ada4fa302e529bff4b7fe7e6a4b98a65ce9174"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "riscv",
  "riscv-pac",
  "riscv-rt-macros",
@@ -1916,6 +1897,35 @@ dependencies = [
  "managed",
 ]
 
+[[package]]
+name = "sntpc"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "294278b134cd7d06d7f22eca970aebe38707864c080f66547f9ad26327534af3"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "sntpc-net-embassy"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97d4addcbed51e6aa5178ba85834d1748b70da0f3df4552382a10afbfe285ae3"
+dependencies = [
+ "embassy-net",
+ "sntpc",
+]
+
+[[package]]
+name = "sntpc-time-embassy"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "184c354de440d7b2e95a547eb16f2527a1eba1bb666f322782cdb4d4668fc66f"
+dependencies = [
+ "embassy-time",
+ "sntpc",
+]
+
 [[package]]
 name = "somni-expr"
 version = "0.2.0"
@@ -2254,7 +2264,7 @@ version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "409a9b4629d429e995cde4dfbd9fe562ccae66f7624514e200733fc5d0ea8905"
 dependencies = [
- "defmt 1.1.0",
+ "defmt 1.1.1",
  "document-features",
  "xtensa-lx",
  "xtensa-lx-rt-proc-macros",

Cargo.toml

@@ -18,7 +18,7 @@ esp-rtos = { version = "0.3.0", features = [
   "esp32c6",
 ] }
 
-defmt = "1.1.0"
+defmt = "1.1.1"
 esp-bootloader-esp-idf = { version = "0.5.0", features = ["defmt", "esp32c6"] }
 
 embassy-executor = { version = "0.10.0", features = ["defmt"] }
@@ -34,7 +34,7 @@ esp-println = { version = "0.17.0", features = ["defmt-espflash", "esp32c6"] }
 critical-section = "1.2.0"
 static_cell = "2.1.1"
 
-embassy-net = { version = "0.9.0", features = [
+embassy-net = { version = "0.9.1", features = [
   "defmt",
   "dhcpv4-hostname",
   "medium-ethernet",
@@ -50,7 +50,12 @@ esp-radio = { version = "0.18.0", features = [
   "wifi",
 ] }
 
-picoserve = { version = "0.18", features = ["defmt", "embassy", "json"] }
+sntpc = { version = "0.11", default-features = false }
+sntpc-net-embassy = { version = "0.11", default-features = false }
+sntpc-time-embassy = { version = "0.6" }
+portable-atomic = "1.15.0"
+
+picoserve = { version = "0.19", features = ["defmt", "embassy", "json"] }
 
 
 # For fine tuning these settings, please refer to https://doc.rust-lang.org/cargo/reference/profiles.html

cad/build.py

@@ -120,7 +120,7 @@ def build_drive_shaft_bar_adapter():
     with BuildPart() as drive_shaft_bar_adapter:
         Cylinder((ext_size / 2) + thickness, height, align=(Align.CENTER, Align.CENTER, Align.MIN))
 
-        # hollow the box
+        # cut out space for the extrusion
         with BuildSketch(Plane((0, 0, thickness))):
             Rectangle(ext_size, ext_size)
             with PolarLocations(ext_size / 2, 4):

src/bin/main.rs

@@ -18,8 +18,8 @@ use esp_hal::timer::timg::TimerGroup;
 use esp_println as _;
 use esp_radio::wifi::sta::StationConfig;
 use esp_radio::wifi::{ControllerConfig, Interface, WifiController};
-use picoserve::routing::get;
+
-use picoserve::{AppBuilder, AppRouter};
+use cover_theif::{http_api::{self, HttpApiProps, HttpApiService}, clock};
 
 extern crate alloc;
 
@@ -40,16 +40,6 @@ macro_rules! mk_static {
 const SSID: &str = env!("SSID");
 const PASSWORD: &str = env!("PASSWORD");
 
-struct AppProps;
-
-impl AppBuilder for AppProps {
-    type PathRouter = impl picoserve::routing::PathRouter;
-
-    fn build_app(self) -> picoserve::Router<Self::PathRouter> {
-        picoserve::Router::new().route("/", get(|| async move { "Hello World" }))
-    }
-}
-
 #[allow(
     clippy::large_stack_frames,
     reason = "it's not unusual to allocate larger buffers etc. in main"
@@ -109,17 +99,9 @@ async fn main(spawner: Spawner) -> ! {
         info!("Got IP: {}", config.address);
     }
 
-    let app = mk_static!(AppRouter<AppProps>, AppProps.build_app());
+    spawner.spawn(clock::ntp_upkeep_service(net_stack).unwrap());
 
-    let port = 80;
+    spawner.spawn(http_api_serve_task(HttpApiService::new(net_stack, Default::default(), Default::default())).unwrap());
-    let mut tcp_rx_buffer = [0; 1024];
-    let mut tcp_tx_buffer = [0; 1024];
-    let mut http_buffer = [0; 2048];
-    let web_serve_config = picoserve::Config::const_default().keep_connection_alive();
-
-    picoserve::Server::new(app, &web_serve_config, &mut http_buffer)
-        .listen_and_serve(0, net_stack, port, &mut tcp_rx_buffer, &mut tcp_tx_buffer)
-        .await;
 
     loop {
         info!("Hello world");
@@ -157,3 +139,8 @@ async fn connection(mut controller: WifiController<'static>) {
 async fn net_task(mut runner: Runner<'static, Interface<'static>>) {
     runner.run().await
 }
+
+#[embassy_executor::task]
+async fn http_api_serve_task(mut service: HttpApiService<'static, HttpApiProps>) {
+    service.serve().await;
+}

src/clock.rs

@@ -0,0 +1,69 @@
+use core::net::SocketAddr;
+use embassy_net::udp::{PacketMetadata, UdpSocket};
+use embassy_time::{Duration, Timer};
+use sntpc::{NtpContext, get_time};
+use sntpc_net_embassy::UdpSocketWrapper;
+use sntpc_time_embassy::EmbassyTimestampGenerator;
+use portable_atomic::{AtomicU64, Ordering};
+
+// NTP server (pool.ntp.org is the usual choice)
+const NTP_SERVER: &str = "pool.ntp.org";
+const NTP_PORT: u16 = 123;
+
+static NTP_BOOT_OFFSET: AtomicU64 = AtomicU64::new(0);
+
+pub async fn fetch_ntp_time(stack: embassy_net::Stack<'static>) -> Result<u64, &'static str> {
+    // Resolve the NTP server hostname
+    let server_addr = stack
+        .dns_query(NTP_SERVER, embassy_net::dns::DnsQueryType::A)
+        .await
+        .map_err(|_| "DNS resolution failed")?
+        .first()
+        .copied()
+        .ok_or("No DNS result")?;
+
+    let socket_addr = SocketAddr::new(server_addr.into(), NTP_PORT);
+
+    // Allocate UDP buffers (can be small — SNTP packets are tiny)
+    let mut rx_meta = [PacketMetadata::EMPTY; 16];
+    let mut rx_buf = [0u8; 48];
+    let mut tx_meta = [PacketMetadata::EMPTY; 16];
+    let mut tx_buf = [0u8; 48];
+
+    let mut socket = UdpSocket::new(stack, &mut rx_meta, &mut rx_buf, &mut tx_meta, &mut tx_buf);
+    socket.bind(0).map_err(|_| "bind failed")?;
+
+    let wrapped = UdpSocketWrapper::from(socket);
+    let ctx = NtpContext::new(EmbassyTimestampGenerator::default());
+
+    let result = get_time(socket_addr, &wrapped, ctx)
+        .await
+        .map_err(|_| "SNTP request failed")?;
+
+    // result.sec is the NTP timestamp in seconds since 1900-01-01.
+    // Unix epoch is 1900-01-01 + 70 years = 2_208_988_800 seconds.
+    const NTP_UNIX_OFFSET: u64 = 2_208_988_800;
+    let unix_secs = result.sec().saturating_sub(NTP_UNIX_OFFSET);
+
+    Ok(unix_secs)
+}
+
+pub fn now() -> embassy_time::Instant {
+    embassy_time::Instant::now() + Duration::from_secs(NTP_BOOT_OFFSET.load(Ordering::Relaxed))
+}
+
+#[embassy_executor::task]
+pub async fn ntp_upkeep_service(stack: embassy_net::Stack<'static>) {
+    loop {
+        match fetch_ntp_time(stack).await {
+            Ok(unix_secs) => {
+                NTP_BOOT_OFFSET.store(unix_secs - embassy_time::Instant::now().as_secs(), portable_atomic::Ordering::Relaxed);
+                Timer::after(Duration::from_secs(6 * 60 * 60)).await
+            }
+            Err(err) => {
+                defmt::error!("Failed to sync the clock from NTP: {}", err);
+                Timer::after(Duration::from_secs(10)).await
+            }
+        }
+    }
+}

src/http_api.rs

@@ -0,0 +1,70 @@
+use embassy_net::Stack;
+use picoserve::routing::get;
+use picoserve::{AppBuilder, AppRouter, Config};
+
+#[derive(Default)]
+pub struct HttpApiProps;
+
+impl AppBuilder for HttpApiProps {
+    type PathRouter = impl picoserve::routing::PathRouter;
+
+    fn build_app(self) -> picoserve::Router<Self::PathRouter> {
+        picoserve::Router::new().route("/", get(|| async move { "Hello World" }))
+    }
+}
+
+pub struct HttpApiConfig {
+    pub port: u16,
+    pub web_serve_config: Config,
+}
+
+impl Default for HttpApiConfig {
+    fn default() -> Self {
+        Self {
+            port: 80,
+            web_serve_config: Config::const_default().keep_connection_alive(),
+        }
+    }
+}
+
+pub struct HttpApiService<'a, AB: AppBuilder> {
+    pub config: HttpApiConfig,
+
+    net_stack: Stack<'a>,
+    app: AppRouter<AB>,
+
+    tcp_rx_buffer: [u8; 1024],
+    tcp_tx_buffer: [u8; 1024],
+    http_buffer: [u8; 2048],
+}
+
+impl<'a, AB: AppBuilder> HttpApiService<'a, AB> {
+    pub fn new(net_stack: Stack<'a>, config: HttpApiConfig, app: AB) -> Self {
+        Self {
+            config: config,
+
+            net_stack: net_stack,
+            app: app.build_app(),
+
+            tcp_rx_buffer: [0; 1024],
+            tcp_tx_buffer: [0; 1024],
+            http_buffer: [0; 2048],
+        }
+    }
+
+    pub async fn serve(&mut self) {
+        picoserve::Server::new(
+            &self.app,
+            &self.config.web_serve_config,
+            &mut self.http_buffer,
+        )
+        .listen_and_serve(
+            0,
+            self.net_stack,
+            self.config.port,
+            &mut self.tcp_rx_buffer,
+            &mut self.tcp_tx_buffer,
+        )
+        .await;
+    }
+}

src/lib.rs

@@ -1 +1,12 @@
 #![no_std]
+#![deny(
+    clippy::mem_forget,
+    reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
+    holding buffers for the duration of a data transfer."
+)]
+#![deny(clippy::large_stack_frames)]
+#![feature(impl_trait_in_assoc_type)]
+
+pub mod http_api;
+
+pub mod clock;