diff --git a/ci.sh b/ci.sh
index 00dc8cb9c..1085ad960 100755
--- a/ci.sh
+++ b/ci.sh
@@ -42,25 +42,25 @@ cargo batch  \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nightly,nrf52840,gpiote,time-driver-rtc1 \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nightly,nrf52840,log,gpiote,time-driver-rtc1 \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nightly,nrf52840,defmt,gpiote,time-driver-rtc1,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f410tb,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f411ce,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f429zi,log,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32h755zi-cm7,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32h7b3ai,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32l476vg,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32wb15cc,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32l072cz,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32l041f6,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32l151cb-a,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f398ve,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32g0c1ve,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f217zg,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv8m.main-none-eabihf --features nightly,stm32l552ze,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32wl54jc-cm0p,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32wle5ub,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f107vc,defmt,exti,time-driver-any,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f410tb,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f411ce,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32f429zi,log,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32h755zi-cm7,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32h7b3ai,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32l476vg,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32wb15cc,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32l072cz,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32l041f6,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32l151cb-a,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f398ve,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32g0c1ve,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f217zg,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv8m.main-none-eabihf --features nightly,stm32l552ze,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features nightly,stm32wl54jc-cm0p,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features nightly,stm32wle5ub,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features nightly,stm32f107vc,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
     --- build --release --manifest-path embassy-boot/nrf/Cargo.toml --target thumbv7em-none-eabi --features embassy-nrf/nrf52840 \
-    --- build --release --manifest-path embassy-boot/stm32/Cargo.toml --target thumbv7em-none-eabi --features embassy-stm32/stm32wl55jc-cm4 \
+    --- build --release --manifest-path embassy-boot/stm32/Cargo.toml --target thumbv7em-none-eabi --features embassy-stm32/stm32wl55jc-cm4,embassy/time-tick-32768hz \
     --- build --release --manifest-path docs/modules/ROOT/examples/basic/Cargo.toml --target thumbv7em-none-eabi \
     --- build --release --manifest-path docs/modules/ROOT/examples/layer-by-layer/blinky-pac/Cargo.toml --target thumbv7em-none-eabi \
     --- build --release --manifest-path docs/modules/ROOT/examples/layer-by-layer/blinky-hal/Cargo.toml --target thumbv7em-none-eabi \
@@ -85,6 +85,9 @@ cargo batch  \
     --- build --release --manifest-path examples/stm32wb/Cargo.toml --target thumbv7em-none-eabihf --out-dir out/examples/stm32wb \
     --- build --release --manifest-path examples/stm32wl/Cargo.toml --target thumbv7em-none-eabihf --out-dir out/examples/stm32wl \
     --- build --release --manifest-path examples/boot/nrf/Cargo.toml --target thumbv7em-none-eabi --out-dir out/examples/boot/nrf --bin b \
+    --- build --release --manifest-path examples/boot/stm32f3/Cargo.toml --target thumbv7em-none-eabi --out-dir out/examples/boot/stm32f3 --bin b \
+    --- build --release --manifest-path examples/boot/stm32f7/Cargo.toml --target thumbv7em-none-eabi --out-dir out/examples/boot/stm32f7 --bin b \
+    --- build --release --manifest-path examples/boot/stm32h7/Cargo.toml --target thumbv7em-none-eabi --out-dir out/examples/boot/stm32h7 --bin b \
     --- build --release --manifest-path examples/boot/stm32l0/Cargo.toml --target thumbv6m-none-eabi --out-dir out/examples/boot/stm32l0 --bin b \
     --- build --release --manifest-path examples/boot/stm32l1/Cargo.toml --target thumbv7m-none-eabi --out-dir out/examples/boot/stm32l1 --bin b \
     --- build --release --manifest-path examples/boot/stm32l4/Cargo.toml --target thumbv7em-none-eabi --out-dir out/examples/boot/stm32l4 --bin b \
diff --git a/ci_stable.sh b/ci_stable.sh
index 4f604057d..082d0f45e 100755
--- a/ci_stable.sh
+++ b/ci_stable.sh
@@ -27,38 +27,38 @@ cargo batch  \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,gpiote,time-driver-rtc1 \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,log,gpiote,time-driver-rtc1 \
     --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,defmt,gpiote,time-driver-rtc1,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32g473cc,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32g491re,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32u585zi,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32wb55vy,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32wl55uc-cm4,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l4r9zi,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f303vc,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f411ce,defmt,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f411ce,defmt,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f410tb,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f410tb,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,exti,time-driver-any,unstable-traits \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32f217zg,defmt,exti,time-driver-any \
-    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32f217zg,defmt,exti,time-driver-any,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32g473cc,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32g491re,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32u585zi,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32wb55vy,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32wl55uc-cm4,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l4r9zi,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f303vc,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f411ce,defmt,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f411ce,defmt,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f410tb,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f410tb,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32f429zi,log,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32h755zi-cm7,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7em-none-eabi --features stm32l476vg,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv6m-none-eabi --features stm32l072cz,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32l151cb-a,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32f217zg,defmt,exti,time-driver-any,embassy/time-tick-32768hz \
+    --- build --release --manifest-path embassy-stm32/Cargo.toml --target thumbv7m-none-eabi --features stm32f217zg,defmt,exti,time-driver-any,embassy/time-tick-32768hz,unstable-traits \
     --- build --release --manifest-path examples/nrf/Cargo.toml --target thumbv7em-none-eabi --no-default-features --out-dir out/examples/nrf --bin raw_spawn \
     --- build --release --manifest-path examples/stm32l0/Cargo.toml --target thumbv6m-none-eabi --no-default-features --out-dir out/examples/stm32l0 --bin raw_spawn \
diff --git a/embassy-boot/stm32/Cargo.toml b/embassy-boot/stm32/Cargo.toml
index 78339b0a2..a31717ff3 100644
--- a/embassy-boot/stm32/Cargo.toml
+++ b/embassy-boot/stm32/Cargo.toml
@@ -27,7 +27,6 @@ defmt = [
     "embassy-stm32/defmt",
 ]
 debug = ["defmt-rtt"]
-thumbv6 = []
 
 [profile.dev]
 debug = 2
diff --git a/embassy-boot/stm32/build.rs b/embassy-boot/stm32/build.rs
index fd605991f..3997702f6 100644
--- a/embassy-boot/stm32/build.rs
+++ b/embassy-boot/stm32/build.rs
@@ -24,4 +24,9 @@ fn main() {
     if env::var("CARGO_FEATURE_DEFMT").is_ok() {
         println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
     }
+
+    let target = env::var("TARGET").unwrap();
+    if target.starts_with("thumbv6m-") {
+        println!("cargo:rustc-cfg=armv6m");
+    }
 }
diff --git a/embassy-boot/stm32/src/lib.rs b/embassy-boot/stm32/src/lib.rs
index 48512534b..8c6e65507 100644
--- a/embassy-boot/stm32/src/lib.rs
+++ b/embassy-boot/stm32/src/lib.rs
@@ -76,7 +76,7 @@ impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
         trace!("Loading app at 0x{:x}", start);
         #[allow(unused_mut)]
         let mut p = cortex_m::Peripherals::steal();
-        #[cfg(not(feature = "thumbv6"))]
+        #[cfg(not(armv6m))]
         p.SCB.invalidate_icache();
         p.SCB.vtor.write(start as u32);
 
diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index b682587f6..32311cc75 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -80,7 +80,7 @@ exti = []
 
 # Features starting with `_` are for internal use only. They're not intended
 # to be enabled by other crates, and are not covered by semver guarantees.
-_time-driver = ["embassy/time-tick-32768hz"]
+_time-driver = ["embassy/time"]
 time-driver-any = ["_time-driver"]
 time-driver-tim2 = ["_time-driver"]
 time-driver-tim3 = ["_time-driver"]
diff --git a/examples/boot/stm32f3/Cargo.toml b/examples/boot/stm32f3/Cargo.toml
index fab6fd723..63cdf6234 100644
--- a/examples/boot/stm32f3/Cargo.toml
+++ b/examples/boot/stm32f3/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32f3-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f303re", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/boot/stm32f7/Cargo.toml b/examples/boot/stm32f7/Cargo.toml
index 14500b198..ce0773b22 100644
--- a/examples/boot/stm32f7/Cargo.toml
+++ b/examples/boot/stm32f7/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32f7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f767zi", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/boot/stm32h7/Cargo.toml b/examples/boot/stm32h7/Cargo.toml
index 3069277ed..fddf4cfdb 100644
--- a/examples/boot/stm32h7/Cargo.toml
+++ b/examples/boot/stm32h7/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32f7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32h743zi", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/boot/stm32l0/Cargo.toml b/examples/boot/stm32l0/Cargo.toml
index 13ca84367..b6fe9ee65 100644
--- a/examples/boot/stm32l0/Cargo.toml
+++ b/examples/boot/stm32l0/Cargo.toml
@@ -5,9 +5,9 @@ name = "embassy-boot-stm32l0-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l072cz", "time-driver-any", "exti", "memory-x"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32", features = ["thumbv6"] }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
diff --git a/examples/boot/stm32l0/README.md b/examples/boot/stm32l0/README.md
index b498fdc2d..a0e8021fc 100644
--- a/examples/boot/stm32l0/README.md
+++ b/examples/boot/stm32l0/README.md
@@ -15,7 +15,7 @@ application.
 
 ```
 # Flash bootloader
-cargo flash --manifest-path ../../../embassy-boot/stm32/Cargo.toml --release --features embassy-stm32/stm32l072cz,thumbv6 --chip STM32L072CZTx
+cargo flash --manifest-path ../../../embassy-boot/stm32/Cargo.toml --release --features embassy-stm32/stm32l072cz --chip STM32L072CZTx
 # Build 'b'
 cargo build --release --bin b
 # Generate binary for 'b'
diff --git a/examples/boot/stm32l1/Cargo.toml b/examples/boot/stm32l1/Cargo.toml
index b0b6e3d25..d3c66323e 100644
--- a/examples/boot/stm32l1/Cargo.toml
+++ b/examples/boot/stm32l1/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32l1-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l151cb-a", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/boot/stm32l4/Cargo.toml b/examples/boot/stm32l4/Cargo.toml
index 705dbd0d6..234ea9b5c 100644
--- a/examples/boot/stm32l4/Cargo.toml
+++ b/examples/boot/stm32l4/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32l4-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l475vg", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/boot/stm32wl/Cargo.toml b/examples/boot/stm32wl/Cargo.toml
index 41e6a112e..b6062b6a6 100644
--- a/examples/boot/stm32wl/Cargo.toml
+++ b/examples/boot/stm32wl/Cargo.toml
@@ -5,7 +5,7 @@ name = "embassy-boot-stm32wl-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly"] }
+embassy = { version = "0.1.0", path = "../../../embassy", features = ["nightly", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32wl55jc-cm4", "time-driver-any", "exti"]  }
 embassy-boot-stm32 = { version = "0.1.0", path = "../../../embassy-boot/stm32" }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../embassy-embedded-hal" }
diff --git a/examples/stm32f0/Cargo.toml b/examples/stm32f0/Cargo.toml
index c973c1f7c..53358db9a 100644
--- a/examples/stm32f0/Cargo.toml
+++ b/examples/stm32f0/Cargo.toml
@@ -13,6 +13,6 @@ cortex-m-rt = "0.7.0"
 defmt = "0.3"
 defmt-rtt = "0.3"
 panic-probe = "0.3"
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "memory-x", "stm32f030f4", "time-driver-any"] }
 
diff --git a/examples/stm32f1/Cargo.toml b/examples/stm32f1/Cargo.toml
index 5e5faf1f6..e09e17fcd 100644
--- a/examples/stm32f1/Cargo.toml
+++ b/examples/stm32f1/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f103c8", "unstable-pac", "memory-x", "time-driver-any"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32f2/Cargo.toml b/examples/stm32f2/Cargo.toml
index 4eef3a6fe..8310aa3a1 100644
--- a/examples/stm32f2/Cargo.toml
+++ b/examples/stm32f2/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f207zg", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32f3/Cargo.toml b/examples/stm32f3/Cargo.toml
index e7a44c11e..de81f1002 100644
--- a/examples/stm32f3/Cargo.toml
+++ b/examples/stm32f3/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f303vc", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32f4/Cargo.toml b/examples/stm32f4/Cargo.toml
index 651d01388..7260ba0d2 100644
--- a/examples/stm32f4/Cargo.toml
+++ b/examples/stm32f4/Cargo.toml
@@ -7,7 +7,7 @@ resolver = "2"
 
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32f429zi", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32f7/Cargo.toml b/examples/stm32f7/Cargo.toml
index cd7394a5c..54d6ed3e3 100644
--- a/examples/stm32f7/Cargo.toml
+++ b/examples/stm32f7/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "net", "stm32f767zi", "unstable-pac", "time-driver-any", "exti"]  }
 embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"] }
 embedded-io = { version = "0.3.0", features = ["async"] }
diff --git a/examples/stm32g0/Cargo.toml b/examples/stm32g0/Cargo.toml
index 9facbc5c7..4b17aa286 100644
--- a/examples/stm32g0/Cargo.toml
+++ b/examples/stm32g0/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "time-driver-any", "stm32g071rb", "memory-x", "unstable-pac", "exti"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32g4/Cargo.toml b/examples/stm32g4/Cargo.toml
index 7a1f5a9fa..0f86c6a38 100644
--- a/examples/stm32g4/Cargo.toml
+++ b/examples/stm32g4/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "time-driver-any", "stm32g491re", "memory-x", "unstable-pac", "exti"]  }
 embassy-hal-common = {version = "0.1.0", path = "../../embassy-hal-common" }
 
diff --git a/examples/stm32h7/Cargo.toml b/examples/stm32h7/Cargo.toml
index 8cfd2a673..8026e11bf 100644
--- a/examples/stm32h7/Cargo.toml
+++ b/examples/stm32h7/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32h743bi", "net", "time-driver-any", "exti", "unstable-pac", "unstable-traits"] }
 embassy-net = { path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"] }
 embedded-io = { version = "0.3.0", features = ["async"] }
diff --git a/examples/stm32l0/Cargo.toml b/examples/stm32l0/Cargo.toml
index a483b08bd..e8e4fbe52 100644
--- a/examples/stm32l0/Cargo.toml
+++ b/examples/stm32l0/Cargo.toml
@@ -10,7 +10,7 @@ default = ["nightly"]
 nightly = ["embassy-stm32/nightly", "embassy-lora", "lorawan-device", "lorawan", "embedded-io/async"]
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "stm32l072cz", "time-driver-any", "exti", "unstable-traits", "memory-x"]  }
 embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["sx127x", "time", "defmt"], optional = true}
 
diff --git a/examples/stm32l1/Cargo.toml b/examples/stm32l1/Cargo.toml
index ce6b07729..80e6f3906 100644
--- a/examples/stm32l1/Cargo.toml
+++ b/examples/stm32l1/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32l151cb-a", "time-driver-any", "memory-x"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32l4/Cargo.toml b/examples/stm32l4/Cargo.toml
index fdefc4eb3..fdf0db9c0 100644
--- a/examples/stm32l4/Cargo.toml
+++ b/examples/stm32l4/Cargo.toml
@@ -8,7 +8,7 @@ resolver = "2"
 [features]
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../embassy-embedded-hal" }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32l4s5vi", "time-driver-any", "exti", "unstable-traits"]  }
 
diff --git a/examples/stm32u5/Cargo.toml b/examples/stm32u5/Cargo.toml
index e518195bc..1e3119806 100644
--- a/examples/stm32u5/Cargo.toml
+++ b/examples/stm32u5/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32u585ai", "time-driver-any", "memory-x" ]  }
 
 defmt = "0.3"
diff --git a/examples/stm32wb/Cargo.toml b/examples/stm32wb/Cargo.toml
index d797b9c78..1e23182f8 100644
--- a/examples/stm32wb/Cargo.toml
+++ b/examples/stm32wb/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32wb55cc", "time-driver-any", "exti"]  }
 
 defmt = "0.3"
diff --git a/examples/stm32wl/Cargo.toml b/examples/stm32wl/Cargo.toml
index 01f317039..b635cb178 100644
--- a/examples/stm32wl/Cargo.toml
+++ b/examples/stm32wl/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 resolver = "2"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-timestamp-uptime", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "subghz", "unstable-pac", "exti"]  }
 embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["stm32wl", "time", "defmt"] }
 
diff --git a/tests/stm32/Cargo.toml b/tests/stm32/Cargo.toml
index 4dd243754..ad6403ab3 100644
--- a/tests/stm32/Cargo.toml
+++ b/tests/stm32/Cargo.toml
@@ -15,7 +15,7 @@ stm32wb55rg = ["embassy-stm32/stm32wb55rg"]     # Nucleo
 stm32u585ai = ["embassy-stm32/stm32u585ai"]     # IoT board
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "time-tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "memory-x", "time-driver-tim2"]  }
 
 defmt = "0.3.0"