Rename embassy-extras to embassy-hal-common

embassy-hal-common/src/lib.rs

@@ -0,0 +1,21 @@
+#![no_std]
+
+// This mod MUST go first, so that the others see its macros.
+pub(crate) mod fmt;
+
+pub mod interrupt;
+mod macros;
+pub mod peripheral;
+pub mod peripheral_shared;
+pub mod ring_buffer;
+pub mod usb;
+
+/// Low power blocking wait loop using WFE/SEV.
+pub fn low_power_wait_until(mut condition: impl FnMut() -> bool) {
+    while !condition() {
+        // WFE might "eat" an event that would have otherwise woken the executor.
+        cortex_m::asm::wfe();
+    }
+    // Retrigger an event to be transparent to the executor.
+    cortex_m::asm::sev();
+}