From 128733e51f07873881753bd55504756b9bcdac4b Mon Sep 17 00:00:00 2001
From: Daniel Bulant <danbulant@gmail.com>
Date: Mon, 11 May 2026 17:38:55 +0200
Subject: [PATCH] progress

---
 esp32/.cargo/config.toml |    7 +
 esp32/Cargo.lock         | 1397 +++++++++++++++-----------------------
 esp32/Cargo.toml         |   30 +-
 esp32/build.rs           |    5 -
 esp32/flake.lock         |   66 +-
 esp32/flake.nix          |   66 +-
 esp32/src/bin/logger.rs  |   45 +-
 7 files changed, 633 insertions(+), 983 deletions(-)

diff --git a/esp32/.cargo/config.toml b/esp32/.cargo/config.toml
index 0b3ebe5..d017de9 100644
--- a/esp32/.cargo/config.toml
+++ b/esp32/.cargo/config.toml
@@ -4,6 +4,13 @@ runner = "espflash flash --monitor"
 
 [build]
 target = "xtensa-esp32-none-elf"
+rustflags = [
+    "-C", "link-arg=-Wl,-Tlinkall.x",
+  "-C", "link-arg=-nostartfiles",
+]
+
+[unstable]
+build-std = ["core", "alloc", "compiler_builtins"]
 
 [env]
 DEFMT_LOG = "debug"
diff --git a/esp32/Cargo.lock b/esp32/Cargo.lock
index 3c9e56d..f15781f 100644
--- a/esp32/Cargo.lock
+++ b/esp32/Cargo.lock
@@ -13,18 +13,6 @@ dependencies = [
  "ufmt 0.1.2",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.8.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
-dependencies = [
- "cfg-if",
- "once_cell",
- "version_check",
- "zerocopy",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -34,30 +22,12 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "aligned"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee4508988c62edf04abd8d92897fca0c2995d907ce1dfeaf369dac3716a40685"
-dependencies = [
- "as-slice",
-]
-
 [[package]]
 name = "arrayvec"
 version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
-[[package]]
-name = "as-slice"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "516b6b4f0e40d50dcda9365d53964ec74560ad4284da2e7fc97122cd83174516"
-dependencies = [
- "stable_deref_trait",
-]
-
 [[package]]
 name = "as5600"
 version = "0.8.0"
@@ -69,27 +39,12 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "ascii-canvas"
-version = "4.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef1e3e699d84ab1b0911a1010c5c106aa34ae89aeac103be5ce0c3859db1e891"
-dependencies = [
- "term",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
-[[package]]
-name = "az"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be5eb007b7cacc6c660343e96f650fedf4b5a77512399eb952ca6642cf8d13f7"
-
 [[package]]
 name = "bare-metal"
 version = "0.2.5"
@@ -99,21 +54,6 @@ dependencies = [
  "rustc_version",
 ]
 
-[[package]]
-name = "bit-set"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
-dependencies = [
- "bit-vec",
-]
-
-[[package]]
-name = "bit-vec"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
-
 [[package]]
 name = "bitfield"
 version = "0.13.2"
@@ -122,9 +62,23 @@ checksum = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
 
 [[package]]
 name = "bitfield"
-version = "0.14.0"
+version = "0.19.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d7e60934ceec538daadb9d8432424ed043a904d8e0243f3c6446bce549a46ac"
+checksum = "21ba6517c6b0f2bf08be60e187ab64b038438f22dd755614d8fe4d4098c46419"
+dependencies = [
+ "bitfield-macros",
+]
+
+[[package]]
+name = "bitfield-macros"
+version = "0.19.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f48d6ace212fdf1b45fd6b566bb40808415344642b76c3224c07c8df9da81e97"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
 
 [[package]]
 name = "bitflags"
@@ -147,30 +101,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "bt-hci"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "211713d2e9fb4793ce4360a712c0764264aff6be48932ccf02ca2a331c0436a9"
-dependencies = [
- "btuuid",
- "defmt 1.0.1",
- "embassy-sync 0.8.0",
- "embedded-io 0.7.1",
- "embedded-io-async 0.7.0",
- "futures-intrusive",
- "heapless 0.9.2",
-]
-
-[[package]]
-name = "btuuid"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5f48f1e9b0aad0a4f05d17bdeae0fa20ff798e272a03a6940ca27ad9c5a6ae7"
-dependencies = [
- "defmt 0.3.100",
-]
-
 [[package]]
 name = "bytemuck"
 version = "1.25.0"
@@ -199,27 +129,6 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
-[[package]]
-name = "chrono"
-version = "0.4.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c673075a2e0e5f4a1dde27ce9dee1ea4558c7ffe648f576438a20ca1d2acc4b0"
-dependencies = [
- "defmt 1.0.1",
- "num-traits",
- "pure-rust-locales",
-]
-
-[[package]]
-name = "codespan-reporting"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
-dependencies = [
- "termcolor",
- "unicode-width",
-]
-
 [[package]]
 name = "cordyceps"
 version = "0.3.4"
@@ -242,26 +151,6 @@ dependencies = [
  "volatile-register",
 ]
 
-[[package]]
-name = "cortex-m-rt"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "801d4dec46b34c299ccf6b036717ae0fce602faa4f4fe816d9013b9a7c9f5ba6"
-dependencies = [
- "cortex-m-rt-macros",
-]
-
-[[package]]
-name = "cortex-m-rt-macros"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e37549a379a9e0e6e576fd208ee60394ccb8be963889eebba3ffe0980364f472"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.117",
-]
-
 [[package]]
 name = "cpufeatures"
 version = "0.2.17"
@@ -271,27 +160,12 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "crc-any"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a62ec9ff5f7965e4d7280bd5482acd20aadb50d632cf6c1d74493856b011fa73"
-dependencies = [
- "debug-helper",
-]
-
 [[package]]
 name = "critical-section"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
 
-[[package]]
-name = "crunchy"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
-
 [[package]]
 name = "crypto-common"
 version = "0.1.7"
@@ -302,48 +176,34 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "cyw43"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "033e856bf6f38c96fee3e3f398cceff0ca2c2fae5db255bcd23495216c7047da"
-dependencies = [
- "aligned",
- "bt-hci",
- "cortex-m",
- "cortex-m-rt",
- "defmt 1.0.1",
- "embassy-futures",
- "embassy-net-driver-channel 0.4.0",
- "embassy-sync 0.8.0",
- "embassy-time",
- "embedded-hal 1.0.0",
- "embedded-hal-async",
- "embedded-io-async 0.7.0",
- "futures",
- "heapless 0.9.2",
-]
-
-[[package]]
-name = "cyw43-pio"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "768b74f36be804f7b1020938e711d91c0ab5a847cf620d3756245ae7e641e1e2"
-dependencies = [
- "cyw43",
- "defmt 1.0.1",
- "embassy-rp",
- "fixed",
-]
-
 [[package]]
 name = "darling"
 version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc7f46116c46ff9ab3eb1597a45688b6715c6e628b5c133e288e709a29bcb4ee"
 dependencies = [
- "darling_core",
- "darling_macro",
+ "darling_core 0.20.11",
+ "darling_macro 0.20.11",
+]
+
+[[package]]
+name = "darling"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cdf337090841a411e2a7f3deb9187445851f91b309c0c0a29e05f74a00a48c0"
+dependencies = [
+ "darling_core 0.21.3",
+ "darling_macro 0.21.3",
+]
+
+[[package]]
+name = "darling"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
+dependencies = [
+ "darling_core 0.23.0",
+ "darling_macro 0.23.0",
 ]
 
 [[package]]
@@ -361,21 +221,63 @@ dependencies = [
 ]
 
 [[package]]
-name = "darling_macro"
-version = "0.20.11"
+name = "darling_core"
+version = "0.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
+checksum = "1247195ecd7e3c85f83c8d2a366e4210d588e802133e1e355180a9870b517ea4"
 dependencies = [
- "darling_core",
+ "fnv",
+ "ident_case",
+ "proc-macro2",
  "quote",
  "syn 2.0.117",
 ]
 
 [[package]]
-name = "debug-helper"
-version = "0.3.13"
+name = "darling_core"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f578e8e2c440e7297e008bb5486a3a8a194775224bbc23729b0dbdfaeebf162e"
+checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+dependencies = [
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.20.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
+dependencies = [
+ "darling_core 0.20.11",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
+dependencies = [
+ "darling_core 0.21.3",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+dependencies = [
+ "darling_core 0.23.0",
+ "quote",
+ "syn 2.0.117",
+]
 
 [[package]]
 name = "defmt"
@@ -428,6 +330,17 @@ dependencies = [
  "defmt 1.0.1",
 ]
 
+[[package]]
+name = "delegate"
+version = "0.13.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "780eb241654bf097afb00fc5f054a09b687dad862e485fdcf8399bb056565370"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -447,29 +360,6 @@ dependencies = [
  "litrs",
 ]
 
-[[package]]
-name = "either"
-version = "1.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
-
-[[package]]
-name = "embassy-embedded-hal"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0641612053b2f34fc250bb63f6630ae75de46e02ade7f457268447081d709ce"
-dependencies = [
- "embassy-futures",
- "embassy-hal-internal 0.4.0",
- "embassy-sync 0.8.0",
- "embedded-hal 0.2.7",
- "embedded-hal 1.0.0",
- "embedded-hal-async",
- "embedded-storage",
- "embedded-storage-async",
- "nb 1.1.0",
-]
-
 [[package]]
 name = "embassy-executor"
 version = "0.10.0"
@@ -491,7 +381,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d11a246f53de5f97a387f40ac24726817cd0b6f833e7603baac784f29d6ff276"
 dependencies = [
- "darling",
+ "darling 0.20.11",
  "proc-macro2",
  "quote",
  "syn 2.0.117",
@@ -509,27 +399,6 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc2d050bdc5c21e0862a89256ed8029ae6c290a93aecefc73084b3002cdebb01"
 
-[[package]]
-name = "embassy-hal-internal"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f10ce10a4dfdf6402d8e9bd63128986b96a736b1a0a6680547ed2ac55d55dba"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "embassy-hal-internal"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "568659fc53866d3d85c60fa33723fb751aa69e71507634fc2c19e7649432fb75"
-dependencies = [
- "cortex-m",
- "critical-section",
- "defmt 1.0.1",
- "num-traits",
-]
-
 [[package]]
 name = "embassy-net"
 version = "0.9.1"
@@ -558,65 +427,17 @@ dependencies = [
 ]
 
 [[package]]
-name = "embassy-net-driver-channel"
-version = "0.3.2"
+name = "embassy-sync"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7b2739fbcf6cd206ae08779c7d709087b16577d255f2ea4a45bc4bbbf305b3f"
-dependencies = [
- "embassy-futures",
- "embassy-net-driver",
- "embassy-sync 0.7.2",
-]
-
-[[package]]
-name = "embassy-net-driver-channel"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a07d2eb9f05a6fc876500949856ea1be40773d866d8cb99384f72d0ae4568c16"
-dependencies = [
- "embassy-futures",
- "embassy-net-driver",
- "embassy-sync 0.8.0",
-]
-
-[[package]]
-name = "embassy-rp"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d98f472894c1ecffac5596c657af5305c57282d29e8746d7fec033951931bc8"
+checksum = "8d2c8cdff05a7a51ba0087489ea44b0b1d97a296ca6b1d6d1a33ea7423d34049"
 dependencies = [
  "cfg-if",
- "chrono",
- "cortex-m",
- "cortex-m-rt",
  "critical-section",
- "defmt 1.0.1",
- "document-features",
- "embassy-embedded-hal",
- "embassy-futures",
- "embassy-hal-internal 0.5.0",
- "embassy-sync 0.8.0",
- "embassy-time",
- "embassy-time-driver",
- "embassy-time-queue-utils",
- "embassy-usb-driver",
- "embedded-hal 0.2.7",
- "embedded-hal 1.0.0",
- "embedded-hal-async",
- "embedded-hal-nb",
- "embedded-io 0.7.1",
- "embedded-io-async 0.7.0",
- "embedded-storage",
- "embedded-storage-async",
- "fixed",
- "nb 1.1.0",
- "pio",
- "rand_core 0.6.4",
- "rand_core 0.9.5",
- "rp-pac",
- "rp2040-boot2",
- "sha2-const-stable",
- "smart-leds",
+ "embedded-io-async 0.6.1",
+ "futures-sink",
+ "futures-util",
+ "heapless 0.8.0",
 ]
 
 [[package]]
@@ -673,54 +494,6 @@ dependencies = [
  "document-features",
 ]
 
-[[package]]
-name = "embassy-time-queue-utils"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "168297bf80aaf114b3c9ad589bf38b01b3009b9af7f97cd18086c5bbf96f5693"
-dependencies = [
- "embassy-executor-timer-queue",
- "heapless 0.9.2",
-]
-
-[[package]]
-name = "embassy-usb"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc4462e48b19a4f401a11901bdd981aab80c6a826608016a0bdc73cbbab31954"
-dependencies = [
- "embassy-futures",
- "embassy-net-driver-channel 0.3.2",
- "embassy-sync 0.7.2",
- "embassy-usb-driver",
- "embedded-io-async 0.6.1",
- "heapless 0.8.0",
- "ssmarshal",
- "usbd-hid",
-]
-
-[[package]]
-name = "embassy-usb-driver"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17119855ccc2d1f7470a39756b12068454ae27a3eabb037d940b5c03d9c77b7a"
-dependencies = [
- "defmt 1.0.1",
- "embedded-io-async 0.6.1",
-]
-
-[[package]]
-name = "embassy-usb-logger"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "deed6d36715838d6adbbff13b215b03a9deeaa66a64d5fccd6353708ccfb8b8f"
-dependencies = [
- "embassy-futures",
- "embassy-sync 0.7.2",
- "embassy-usb",
- "log",
-]
-
 [[package]]
 name = "embedded-hal"
 version = "0.2.7"
@@ -757,16 +530,6 @@ dependencies = [
  "nb 1.1.0",
 ]
 
-[[package]]
-name = "embedded-hal-nb"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fba4268c14288c828995299e59b12babdbe170f6c6d73731af1b4648142e8605"
-dependencies = [
- "embedded-hal 1.0.0",
- "nb 1.1.0",
-]
-
 [[package]]
 name = "embedded-io"
 version = "0.6.1"
@@ -778,9 +541,6 @@ name = "embedded-io"
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- "defmt 1.0.1",
-]
 
 [[package]]
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@@ -797,7 +557,6 @@ version = "0.7.0"
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 checksum = "2564b9f813c544241430e147d8bc454815ef9ac998878d30cc3055449f7fd4c0"
 dependencies = [
- "defmt 1.0.1",
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 ]
 
@@ -821,65 +580,243 @@ dependencies = [
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+name = "enumset"
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+checksum = "7f96a4a12fe60ac746ae295a1a4ecb5bb02debc20856506c8635288065f142de"
 dependencies = [
- "embedded-storage",
+ "enumset_derive",
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+ "embedded-hal 1.0.0",
+ "embedded-hal-async",
+ "enumset",
+ "esp-config",
+ "esp-hal-procmacros",
+ "esp-metadata-generated",
+ "esp-riscv-rt",
+ "esp-rom-sys",
+ "esp-sync",
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+ "esp32c2",
+ "esp32c3",
+ "esp32c6",
+ "esp32h2",
+ "esp32s2",
+ "esp32s3",
+ "fugit",
+ "instability",
+ "paste",
+ "portable-atomic",
+ "riscv",
+ "sha1",
+ "sha2",
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+ "embassy-sync 0.8.0",
+ "embassy-time",
+ "embedded-hal-compat",
+ "embedded-io 0.7.1",
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+dependencies = [
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+
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 [[package]]
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-version = "0.3.32"
+name = "fugit"
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-checksum = "8b147ee9d1f6d097cef9ce628cd2ee62288d963e16fb287bd9286455b241382d"
+checksum = "4e639847d312d9a82d2e75b0edcc1e934efcc64e6cb7aa94f0b1fbec0bc231d6"
 dependencies = [
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-dependencies = [
- "futures-core",
- "futures-sink",
+ "gcd",
 ]
 
 [[package]]
@@ -916,33 +838,6 @@ version = "0.3.32"
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-
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-
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@@ -962,12 +857,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "389ca41296e6190b48053de0321d02a77f32f8a5d2461dd38762c0593805c6d6"
 dependencies = [
  "futures-core",
- "futures-macro",
- "futures-sink",
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+[[package]]
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+checksum = "1d758ba1b47b00caf47f24925c0074ecb20d6dfcffe7f6d53395c0465674841a"
+
 [[package]]
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@@ -993,17 +892,6 @@ dependencies = [
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-[[package]]
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- "crunchy",
- "zerocopy",
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-]
-
 [[package]]
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@@ -1049,6 +928,12 @@ dependencies = [
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 ]
 
+[[package]]
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+
 [[package]]
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@@ -1062,59 +947,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 dependencies = [
  "equivalent",
- "hashbrown 0.17.0",
+ "hashbrown",
 ]
 
 [[package]]
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+name = "indoc"
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-checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+checksum = "79cf5c93f93228cf8efb3ba362535fb11199ac548a09ce117c9b1adc3030d706"
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-dependencies = [
- "regex-automata",
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+[[package]]
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+checksum = "5eb2d60ef19920a3a9193c3e371f726ec1dafc045dac788d0fb3704272458971"
+dependencies = [
+ "darling 0.23.0",
+ "indoc",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
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+
 [[package]]
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@@ -1133,15 +996,6 @@ version = "1.0.0"
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 checksum = "11d3d7f243d5c5a8b9bb5d6dd2b1602c0cb0b9db1621bafc7ed66e35ff9fe092"
 
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-dependencies = [
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-
 [[package]]
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@@ -1197,12 +1051,6 @@ version = "1.1.0"
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@@ -1232,27 +1080,6 @@ dependencies = [
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@@ -1275,146 +1102,18 @@ dependencies = [
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- "embedded-hal-compat",
- "embedded-io 0.7.1",
- "embedded-io-async 0.7.0",
- "log",
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- "panic-probe",
- "portable-atomic",
- "static_cell",
- "ufmt 0.2.0",
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-
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- "num_enum",
- "paste",
-]
-
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- "lalrpop-util",
- "pio-core",
-]
-
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- "lalrpop-util",
- "pio-core",
- "pio-parser",
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- "proc-macro2",
- "quote",
- "syn 2.0.117",
-]
-
 [[package]]
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 version = "1.13.1"
@@ -1425,10 +1124,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "precomputed-hash"
-version = "0.1.1"
+name = "proc-macro-crate"
+version = "3.5.0"
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-checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
+checksum = "e67ba7e9b2b56446f1d419b1d807906278ffa1a658a8a5d8a39dcb1f5a78614f"
+dependencies = [
+ "toml_edit",
+]
 
 [[package]]
 name = "proc-macro-error-attr2"
@@ -1467,15 +1169,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "pure-rust-locales"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "defmt 1.0.1",
-]
-
 [[package]]
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@@ -1485,39 +1178,6 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-
-[[package]]
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-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
-dependencies = [
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-]
-
-[[package]]
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-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-automata",
- "regex-syntax",
-]
-
 [[package]]
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 version = "0.4.14"
@@ -1536,30 +1196,64 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
 [[package]]
-name = "rgb"
-version = "0.8.53"
+name = "riscv"
+version = "0.15.0"
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-checksum = "47b34b781b31e5d73e9fbc8689c70551fd1ade9a19e3e28cfec8580a79290cc4"
-
-[[package]]
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-checksum = "8af65855c40b2c35079514c5489abffc0429347fef25d8467ff98ad84b4322d3"
+checksum = "b05cfa3f7b30c84536a9025150d44d26b8e1cc20ddf436448d74cd9591eefb25"
 dependencies = [
- "cortex-m",
- "cortex-m-rt",
+ "critical-section",
+ "embedded-hal 1.0.0",
+ "paste",
+ "riscv-macros",
+ "riscv-pac",
 ]
 
 [[package]]
-name = "rp2040-boot2"
+name = "riscv-macros"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c92f344f63f950ee36cf4080050e4dce850839b9175da38f9d2ffb69b4dbb21"
+checksum = "7d323d13972c1b104aa036bc692cd08b822c8bbf23d79a27c526095856499799"
 dependencies = [
- "crc-any",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
 ]
 
+[[package]]
+name = "riscv-pac"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8188909339ccc0c68cfb5a04648313f09621e8b87dc03095454f1a11f6c5d436"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d07b9f3a0eff773fc4df11f44ada4fa302e529bff4b7fe7e6a4b98a65ce9174"
+dependencies = [
+ "riscv",
+ "riscv-pac",
+ "riscv-rt-macros",
+ "riscv-target-parser",
+]
+
+[[package]]
+name = "riscv-rt-macros"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "def519ddeeb5e43c2b4fc3952c27b3a86782fc05192f322b2309125cd85b1fc3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "riscv-target-parser"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1376b15f3ff160e9b1e8ea564ce427f2f6fcf77528cc0a8bf405cb476f9cea7"
+
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -1576,13 +1270,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
 
 [[package]]
-name = "same-file"
-version = "1.0.6"
+name = "ryu"
+version = "1.0.23"
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-checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
-dependencies = [
- "winapi-util",
-]
+checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
 
 [[package]]
 name = "scoped-tls"
@@ -1590,12 +1281,6 @@ version = "1.0.1"
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-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
 [[package]]
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@@ -1618,6 +1303,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
 dependencies = [
  "serde_core",
+ "serde_derive",
 ]
 
 [[package]]
@@ -1641,19 +1327,38 @@ dependencies = [
 ]
 
 [[package]]
-name = "sha2-const-stable"
-version = "0.1.0"
+name = "serde_yaml"
+version = "0.9.34+deprecated"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f179d4e11094a893b82fff208f74d448a7512f99f5a0acbd5c679b705f83ed9"
+checksum = "6a8b1a1a2ebf674015cc02edccce75287f1a0130d394307b36743c2f5d504b47"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "ryu",
+ "serde",
+ "unsafe-libyaml",
+]
 
 [[package]]
-name = "sha3"
+name = "sha1"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "sha2"
 version = "0.10.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77fd7028345d415a4034cf8777cd4f8ab1851274233b45f84e3d955502d93874"
+checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
+ "cfg-if",
+ "cpufeatures",
  "digest",
- "keccak",
 ]
 
 [[package]]
@@ -1681,36 +1386,12 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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-[[package]]
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-
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-[[package]]
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-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66df34e571fa9993fa6f99131a374d58ca3d694b75f9baac93458fe0d6057bf0"
-dependencies = [
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-
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-dependencies = [
- "rgb",
-]
-
 [[package]]
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 version = "0.13.1"
@@ -1726,15 +1407,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "ssmarshal"
-version = "1.0.0"
+name = "somni-expr"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3e6ad23b128192ed337dfa4f1b8099ced0c2bf30d61e551b65fda5916dbb850"
+checksum = "3ed9b7648d5e8b2df6c5e49940c54bcdd2b4dd71eafc6e8f1c714eb4581b0f53"
 dependencies = [
- "encode_unicode",
- "serde",
+ "somni-parser",
 ]
 
+[[package]]
+name = "somni-parser"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0f368519fc6c85fc1afdb769fb5a51123f6158013e143656e25a3485a0d401c"
+
 [[package]]
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 version = "1.2.1"
@@ -1750,24 +1436,33 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "0.8.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf776ba3fa74f83bf4b63c3dcbbf82173db2632ed8452cb2d891d33f459de70f"
-dependencies = [
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- "parking_lot",
- "phf_shared",
- "precomputed-hash",
-]
-
 [[package]]
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 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "strum"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af23d6f6c1a224baef9d3f61e287d2761385a5b88fdab4eb4c6f11aeb54c4bcf"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7695ce3845ea4b33927c055a39dc438a45b059f7c1b3d91d38d10355fb8cbca7"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -1790,15 +1485,6 @@ dependencies = [
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 ]
 
-[[package]]
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-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8c27177b12a6399ffc08b98f76f7c9a1f4fe9fc967c784c5a071fa8d93cf7e1"
-dependencies = [
- "windows-sys",
-]
-
 [[package]]
 name = "termcolor"
 version = "1.4.1"
@@ -1837,6 +1523,36 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "1.1.1+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3165f65f62e28e0115a00b2ebdd37eb6f3b641855f9d636d3cd4103767159ad7"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.25.11+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b59c4d22ed448339746c59b905d24568fcbb3ab65a500494f7b8c3e97739f2b"
+dependencies = [
+ "indexmap",
+ "toml_datetime",
+ "toml_parser",
+ "winnow",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.1.2+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2abe9b86193656635d2411dc43050282ca48aa31c2451210f4202550afb7526"
+dependencies = [
+ "winnow",
+]
+
 [[package]]
 name = "tracing"
 version = "0.1.44"
@@ -1961,63 +1677,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
 [[package]]
-name = "unicode-width"
-version = "0.1.14"
+name = "unsafe-libyaml"
+version = "0.2.11"
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-checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
-
-[[package]]
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-
-[[package]]
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-dependencies = [
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- "portable-atomic",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "serde",
- "ssmarshal",
- "usb-device",
- "usbd-hid-macros",
-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
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-]
-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb573c76e7884035ac5e1ab4a81234c187a82b6100140af0ab45757650ccda38"
-dependencies = [
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- "hashbrown 0.13.2",
- "log",
- "proc-macro2",
- "quote",
- "serde",
- "syn 1.0.109",
- "usbd-hid-descriptors",
-]
+checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861"
 
 [[package]]
 name = "valuable"
@@ -2052,16 +1715,6 @@ dependencies = [
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 ]
 
-[[package]]
-name = "walkdir"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
-dependencies = [
- "same-file",
- "winapi-util",
-]
-
 [[package]]
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 version = "0.1.11"
@@ -2096,19 +1749,39 @@ dependencies = [
 ]
 
 [[package]]
-name = "zerocopy"
-version = "0.8.48"
+name = "winnow"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eed437bf9d6692032087e337407a86f04cd8d6a16a37199ed57949d415bd68e9"
+checksum = "2ee1708bef14716a11bae175f579062d4554d95be2c6829f518df847b7b3fdd0"
 dependencies = [
- "zerocopy-derive",
+ "memchr",
 ]
 
 [[package]]
-name = "zerocopy-derive"
-version = "0.8.48"
+name = "xtensa-lx"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70e3cd084b1788766f53af483dd21f93881ff30d7320490ec3ef7526d203bad4"
+checksum = "e012d667b0aa6d2592ace8ef145a98bff3e76cca7a644f4181ecd7a916ed289b"
+dependencies = [
+ "critical-section",
+]
+
+[[package]]
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+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "409a9b4629d429e995cde4dfbd9fe562ccae66f7624514e200733fc5d0ea8905"
+dependencies = [
+ "document-features",
+ "xtensa-lx",
+ "xtensa-lx-rt-proc-macros",
+]
+
+[[package]]
+name = "xtensa-lx-rt-proc-macros"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96fb42cd29c42f8744c74276e9f5bee7b06685bbe5b88df891516d72cb320450"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/esp32/Cargo.toml b/esp32/Cargo.toml
index be339de..13bf743 100644
--- a/esp32/Cargo.toml
+++ b/esp32/Cargo.toml
@@ -1,12 +1,23 @@
 [package]
-name = "pico"
+name = "esp32"
 version = "0.1.0"
 edition = "2024"
 
+[profile.release]
+debug            = true
+debug-assertions = true
+lto              = "fat"
+codegen-units    = 1
+
 
 [dependencies]
+[target.'cfg(target_arch = "xtensa")'.dependencies]
+arrayvec = { version = "0.7.6", default-features = false }
+embedded-io = "0.7.1"
+esp-hal = { version = "1.0.0", features = ["esp32", "rt"] }
+
+[target.'cfg(target_arch = "arm")'.dependencies]
 embedded-hal-compat = "0.13.0"
-embassy-usb-logger = "0.5.1"
 ufmt = "0.2.0"
 log = "0.4"
 ag-lcd={ version = "0.3", features = ["ufmt"]}
@@ -16,7 +27,6 @@ embedded-io-async = "0.7.0"
 embedded-io = "0.7.1"
 owned_str = "0.1.2"
 embassy-sync = "0.8.0"
-arrayvec = { version = "0.7.6", default-features = false }
 embassy-net = { version = "0.9.1",features = ["defmt", "icmp", "tcp", "udp", "raw", "dhcpv4", "medium-ethernet", "dns", "proto-ipv4", "proto-ipv6", "multicast"]}
 embassy-executor = { version = "0.10.0", features = [
     "platform-cortex-m",
@@ -24,29 +34,15 @@ embassy-executor = { version = "0.10.0", features = [
     "executor-interrupt",
     "defmt",
 ] }
-embassy-rp = { version = "0.10.0", features = [
-    "defmt",
-    "unstable-pac",
-    "time-driver",
-    "critical-section-impl",
-    "rp2040",
-] }
 embassy-time = { version = "0.5.1", features = [
     "defmt",
     "defmt-timestamp-uptime",
 ] }
 
-cortex-m = { version = "0.7.7", features = ["inline-asm"] }
-cortex-m-rt = "0.7.5"
 critical-section = "1.2.0"
 static_cell = "2.1.1"
 portable-atomic = { version = "1.13.1", features = ["critical-section"] }
 
-
 defmt = "1.0.1"
 defmt-rtt = "1.1.0"
-
 panic-probe = { version = "1.0.0", features = ["print-defmt"] }
-
-cyw43 = { version = "0.7.0", features = ["defmt", "firmware-logs"] }
-cyw43-pio = { version = "0.10.0", features = ["defmt"] }
diff --git a/esp32/build.rs b/esp32/build.rs
index 3f915f9..d534cc3 100644
--- a/esp32/build.rs
+++ b/esp32/build.rs
@@ -28,9 +28,4 @@ fn main() {
     // here, we ensure the build script is only re-run when
     // `memory.x` is changed.
     println!("cargo:rerun-if-changed=memory.x");
-
-    println!("cargo:rustc-link-arg-bins=--nmagic");
-    println!("cargo:rustc-link-arg-bins=-Tlink.x");
-    println!("cargo:rustc-link-arg-bins=-Tlink-rp.x");
-    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
 }
diff --git a/esp32/flake.lock b/esp32/flake.lock
index f5b3df2..ed24d84 100644
--- a/esp32/flake.lock
+++ b/esp32/flake.lock
@@ -37,6 +37,24 @@
         "type": "github"
       }
     },
+    "flake-parts_2": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib_2"
+      },
+      "locked": {
+        "lastModified": 1777988971,
+        "narHash": "sha256-qIoWPDs+0/8JecyYgE3gpKQxW/4bLW/gp45vow9ioCQ=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "0678d8986be1661af6bb555f3489f2fdfc31f6ff",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1760038930,
@@ -68,33 +86,33 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs-lib_2": {
       "locked": {
-        "lastModified": 1777383249,
-        "narHash": "sha256-b6T90GXUr21iIu6Aw+KGy5uSiB/cVT/UecId1YSESys=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "61a7520db583d9b41be602b4c1e1b1b1b1faa1f4",
+        "lastModified": 1777168982,
+        "narHash": "sha256-GOkGPcboWE9BmGCRMLX3worL4EMnsnG8MyKmXNeYuhQ=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "f5901329dade4a6ea039af1433fb087bd9c1fe14",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
         "type": "github"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_2": {
       "locked": {
-        "lastModified": 1744536153,
-        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
+        "lastModified": 1777954456,
+        "narHash": "sha256-hGdgeU2Nk87RAuZyYjyDjFL6LK7dAZN5RE9+hrDTkDU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
+        "rev": "549bd84d6279f9852cae6225e372cc67fb91a4c1",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -102,26 +120,8 @@
     "root": {
       "inputs": {
         "esp-rs": "esp-rs",
-        "nixpkgs": "nixpkgs_2",
-        "rust-overlay": "rust-overlay"
-      }
-    },
-    "rust-overlay": {
-      "inputs": {
-        "nixpkgs": "nixpkgs_3"
-      },
-      "locked": {
-        "lastModified": 1777346187,
-        "narHash": "sha256-oVxyGjpiIsrXhWTJVUOs38fZQkLjd0nZGOY9K7Kfot8=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "146e7bf7569b8288f24d41d806b9f584f7cfd5b5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },
diff --git a/esp32/flake.nix b/esp32/flake.nix
index 0d8d30c..02174da 100644
--- a/esp32/flake.nix
+++ b/esp32/flake.nix
@@ -1,49 +1,33 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs";
-    rust-overlay.url = "github:oxalica/rust-overlay";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
     esp-rs.url = "github:leighleighleigh/esp-rs-nix";
   };
 
-  outputs =
-    {
-      self,
-      rust-overlay,
-      nixpkgs,
-      esp-rs,
-    }:
-    let
-      overlays = [ (import rust-overlay) ];
-      pkgs = import nixpkgs {
-        system = "x86_64-linux";
-        inherit overlays;
-      };
-    in
-    {
-      packages.x86_64-linux.elf2uf2-rs = pkgs.callPackage ./elf2uf2.nix { };
-      devShell.x86_64-linux = pkgs.mkShell {
-        buildInputs = with pkgs; [
-          espflash
-          esptool
-          esp-rs.packages.${system}.default
-          cargo-espmonitor
-          # (pkgs.rust-bin.selectLatestNightlyWith (
-          #   toolchain:
-          #   toolchain.default.override {
-          #     targets = [
-          #       "thumbv6m-none-eabi"
-          #       "xtensa-esp32-none-eabi"
-          #     ];
-          #     extensions = [ "rust-src" ];
-          #   }
-          # ))
-          pkgs.rust-analyzer
-          pkgs.flip-link
-          pkgs.probe-rs-tools
-          self.packages.x86_64-linux.elf2uf2-rs
-          pkgs.rustfmt
-          # pkgs.picotool
-        ];
+  outputs = inputs @ { flake-parts, esp-rs, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = [ "x86_64-linux" ];
+
+      imports = [
+        "${esp-rs}/package.nix"
+      ];
+
+      perSystem = { pkgs, self', ... }: {
+        devShells.default = pkgs.mkShell {
+          packages = [
+            self'.packages.esp-rs
+            pkgs.rust-analyzer
+            pkgs.rustup
+            pkgs.espflash
+            pkgs.pkg-config
+            pkgs.stdenv.cc
+          ];
+
+          shellHook = ''
+            export RUSTUP_TOOLCHAIN=${self'.packages.esp-rs}
+          '';
+        };
       };
     };
 }
diff --git a/esp32/src/bin/logger.rs b/esp32/src/bin/logger.rs
index ed2333e..d0f0d7a 100644
--- a/esp32/src/bin/logger.rs
+++ b/esp32/src/bin/logger.rs
@@ -1,36 +1,31 @@
-//! This example shows how to use USB (Universal Serial Bus) in the RP2040 chip.
-//!
-//! This creates the possibility to send log::info/warn/error/debug! to USB serial port.
-
 #![no_std]
 #![no_main]
 
-use embassy_executor::Spawner;
-use embassy_rp::bind_interrupts;
-use embassy_rp::peripherals::USB;
-use embassy_rp::usb::{Driver, InterruptHandler};
-use embassy_time::Timer;
-use {defmt_rtt as _, panic_probe as _};
+use arrayvec::ArrayString;
+use core::fmt::Write as _;
+use embedded_io::Write as _;
+use esp_hal::{clock::CpuClock, uart::Config, uart::Uart};
 
-bind_interrupts!(struct Irqs {
-    USBCTRL_IRQ => InterruptHandler<USB>;
-});
-
-#[embassy_executor::task]
-async fn logger_task(driver: Driver<'static, USB>) {
-    embassy_usb_logger::run!(1024, log::LevelFilter::Info, driver);
+#[panic_handler]
+fn panic(_: &core::panic::PanicInfo) -> ! {
+    loop {}
 }
 
-#[embassy_executor::main]
-async fn main(spawner: Spawner) {
-    let p = embassy_rp::init(Default::default());
-    let driver = Driver::new(p.USB, Irqs);
-    spawner.spawn(logger_task(driver).unwrap());
+#[esp_hal::main]
+fn main() -> ! {
+    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
+    let peripherals = esp_hal::init(config);
 
-    let mut counter = 0;
+    let mut uart = Uart::new(peripherals.UART0, Config::default())
+        .unwrap()
+        .with_rx(peripherals.GPIO3)
+        .with_tx(peripherals.GPIO1);
+
+    let mut counter = 0u32;
     loop {
         counter += 1;
-        log::info!("Tick {}", counter);
-        Timer::after_secs(1).await;
+        let mut line = ArrayString::<32>::new();
+        write!(&mut line, "Tick {}\r\n", counter).unwrap();
+        uart.write(line.as_bytes()).unwrap();
     }
 }