From 85bbc042bff1ab492fdb723499dca8efeb7dca19 Mon Sep 17 00:00:00 2001
From: Sofia <sofia@teascade.net>
Date: Sun, 17 May 2026 03:13:08 +0300
Subject: [PATCH] Add multithreading

---
 Cargo.lock  | 347 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   4 +-
 src/main.rs |  33 ++++-
 3 files changed, 382 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index cbbc835..315b446 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,6 +11,15 @@ dependencies = [
  "libm",
 ]
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "allocator-api2"
 version = "0.3.1"
@@ -76,6 +85,16 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
+[[package]]
+name = "cc"
+version = "1.2.62"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1dce859f0832a7d088c4f1119888ab94ef4b5d6795d1ce05afb7fe159d79f98"
+dependencies = [
+ "find-msvc-tools",
+ "shlex",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.4"
@@ -88,6 +107,16 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b396d1f76d455557e1218ec8066ae14bba60b4b36ecd55577ba979f5db7ecaa"
 
+[[package]]
+name = "cordyceps"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "688d7fbb8092b8de775ef2536f36c8c31f2bc4006ece2e8d8ad2d17d00ce0a2a"
+dependencies = [
+ "loom",
+ "tracing",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.17"
@@ -113,6 +142,16 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "darling"
+version = "0.20.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc7f46116c46ff9ab3eb1597a45688b6715c6e628b5c133e288e709a29bcb4ee"
+dependencies = [
+ "darling_core 0.20.11",
+ "darling_macro 0.20.11",
+]
+
 [[package]]
 name = "darling"
 version = "0.21.3"
@@ -133,6 +172,20 @@ dependencies = [
  "darling_macro 0.23.0",
 ]
 
+[[package]]
+name = "darling_core"
+version = "0.20.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d00b9596d185e565c2207a0b01f8bd1a135483d02d9b7b0a54b11da8d53412e"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "darling_core"
 version = "0.21.3"
@@ -159,6 +212,17 @@ dependencies = [
  "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"
@@ -228,6 +292,37 @@ dependencies = [
  "nb 1.1.0",
 ]
 
+[[package]]
+name = "embassy-executor"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d0d3b15c9d7dc4fec1d8cb77112472fb008b3b28c51ad23838d83587a6d2f1e"
+dependencies = [
+ "cordyceps",
+ "critical-section",
+ "document-features",
+ "embassy-executor-macros",
+ "embassy-executor-timer-queue",
+]
+
+[[package]]
+name = "embassy-executor-macros"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d11a246f53de5f97a387f40ac24726817cd0b6f833e7603baac784f29d6ff276"
+dependencies = [
+ "darling 0.20.11",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "embassy-executor-timer-queue"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fc328bf943af66b80b98755db9106bf7e7471b0cf47dc8559cd9a6be504cc9c"
+
 [[package]]
 name = "embassy-futures"
 version = "0.1.2"
@@ -285,6 +380,25 @@ dependencies = [
  "heapless 0.9.3",
 ]
 
+[[package]]
+name = "embassy-time-driver"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ee71af1b3a0deaa53eaf2d39252f83504c853646e472400b763060389b9fcc9"
+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 0.9.3",
+]
+
 [[package]]
 name = "embedded-can"
 version = "0.4.1"
@@ -544,6 +658,17 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "esp-radio-rtos-driver"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bd75cd9073a90ffaa53db0bf17df7dc14164f2407a6ff36c725d2d1f78ff494"
+dependencies = [
+ "cfg-if",
+ "esp-sync",
+ "portable-atomic",
+]
+
 [[package]]
 name = "esp-riscv-rt"
 version = "0.14.0"
@@ -567,6 +692,33 @@ dependencies = [
  "esp32",
 ]
 
+[[package]]
+name = "esp-rtos"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "551f90766e1527edaa0c91e8d559e9e2a60397b545e93357ac61fb31845e5712"
+dependencies = [
+ "allocator-api2",
+ "cfg-if",
+ "document-features",
+ "embassy-executor",
+ "embassy-sync 0.8.0",
+ "embassy-time-driver",
+ "embassy-time-queue-utils",
+ "esp-alloc",
+ "esp-config",
+ "esp-hal",
+ "esp-hal-procmacros",
+ "esp-metadata-generated",
+ "esp-radio-rtos-driver",
+ "esp-rom-sys",
+ "esp-sync",
+ "log",
+ "portable-atomic",
+ "riscv",
+ "xtensa-lx",
+]
+
 [[package]]
 name = "esp-sync"
 version = "0.2.1"
@@ -597,12 +749,14 @@ name = "esp32-phone"
 version = "0.1.0"
 dependencies = [
  "critical-section",
+ "embassy-executor",
  "embedded-hal 1.0.0",
  "esp-alloc",
  "esp-backtrace",
  "esp-bootloader-esp-idf",
  "esp-hal",
  "esp-println",
+ "esp-rtos",
  "libm",
  "log",
  "rusttype",
@@ -662,6 +816,12 @@ dependencies = [
  "vcell",
 ]
 
+[[package]]
+name = "find-msvc-tools"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -712,6 +872,21 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d758ba1b47b00caf47f24925c0074ecb20d6dfcffe7f6d53395c0465674841a"
 
+[[package]]
+name = "generator"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52f04ae4152da20c76fe800fa48659201d5cf627c5149ca0b707b69d7eef6cf9"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "libc",
+ "log",
+ "rustversion",
+ "windows-link",
+ "windows-result",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -831,6 +1006,12 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.186"
@@ -861,6 +1042,28 @@ version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
+[[package]]
+name = "loom"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "419e0dc8046cb947daa77eb95ae174acfbddb7673b4151f56d1eed8e93fbfaca"
+dependencies = [
+ "cfg-if",
+ "generator",
+ "scoped-tls",
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "matchers"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "memchr"
 version = "2.8.0"
@@ -882,6 +1085,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.50.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -891,6 +1103,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+
 [[package]]
 name = "owned_ttf_parser"
 version = "0.15.2"
@@ -972,6 +1190,23 @@ version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
 
+[[package]]
+name = "regex-automata"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
+
 [[package]]
 name = "riscv"
 version = "0.15.0"
@@ -1067,6 +1302,12 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "semihosting"
 version = "0.1.25"
@@ -1138,6 +1379,27 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "smallvec"
+version = "1.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
+
 [[package]]
 name = "somni-expr"
 version = "0.2.0"
@@ -1230,6 +1492,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "1.1.1+spec-1.1.0"
@@ -1260,6 +1531,67 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "tracing"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
+dependencies = [
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
+dependencies = [
+ "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex-automata",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+]
+
 [[package]]
 name = "ttf-parser"
 version = "0.15.2"
@@ -1296,6 +1628,12 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861"
 
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "vcell"
 version = "0.1.3"
@@ -1329,6 +1667,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "windows-result"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7781fa89eaf60850ac3d2da7af8e5242a5ea78d1a11c49bf2910bb5a73853eb5"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.61.2"
diff --git a/Cargo.toml b/Cargo.toml
index 2555064..4f374c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,9 @@ esp-backtrace = { version = "0.19.0", features = [
 ] }
 esp-println = { version = "0.17.0", features = ["esp32", "log-04"] }
 
-# ttf-parser = {version =  "^0.25.0", features = ["no-std-float"], default-features = false }
+esp-rtos = { version = "^0.3.0", features = ["esp32", "embassy", "esp-alloc", "log-04"] }
+embassy-executor = { version = "^0.10.0", features = ["executor-thread"] }
+
 rusttype = {version = "^0.9.0", features = ["libm-math"], default-features = false }
 
 libm = "*"
diff --git a/src/main.rs b/src/main.rs
index 4275976..f259684 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,14 +7,20 @@
 )]
 #![deny(clippy::large_stack_frames)]
 
+use core::mem::MaybeUninit;
+
 use alloc::boxed::Box;
+use embassy_executor::Spawner;
 use esp_hal::{
-    clock::CpuClock,
+    clock::{ClockConfig, CpuClock},
     delay::Delay,
     gpio::{InputConfig, Level, Output, OutputConfig},
+    interrupt::software::SoftwareInterruptControl,
     main,
     spi::master::{Config, Spi},
+    system::Stack,
     time::Rate,
+    timer::timg::TimerGroup,
     uart::{self, Uart},
 };
 
@@ -53,6 +59,23 @@ fn main() -> ! {
     let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
     let peripherals = esp_hal::init(config);
 
+    static mut THREAD_2_STACK: Stack<1024> = esp_hal::system::Stack {
+        mem: MaybeUninit::new([0u8; 1024]),
+    };
+
+    let timg0 = TimerGroup::new(peripherals.TIMG0);
+    let software_interrupt = SoftwareInterruptControl::new(peripherals.SW_INTERRUPT);
+    esp_rtos::start(timg0.timer0, software_interrupt.software_interrupt0);
+    esp_rtos::start_second_core(
+        peripherals.CPU_CTRL,
+        software_interrupt.software_interrupt1,
+        unsafe {
+            #[allow(static_mut_refs)]
+            &mut THREAD_2_STACK
+        },
+        || thread_2_main(),
+    );
+
     // The following pins are used to bootstrap the chip. They are available
     // for use, but check the datasheet of the module for more information on them.
     // - GPIO0
@@ -155,3 +178,11 @@ fn main() -> ! {
 
     // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.1.0/examples
 }
+
+fn thread_2_main() {
+    let delay = Delay::new();
+    loop {
+        delay.delay_millis(1000);
+        log::info!("Hello there!")
+    }
+}