rp: clock setup

embassy-rp/src/reset.rs

@@ -0,0 +1,17 @@
+use crate::pac;
+
+pub use pac::resets::regs::Peripherals;
+
+pub const ALL_PERIPHERALS: Peripherals = Peripherals(0x01ffffff);
+
+pub unsafe fn reset(peris: Peripherals) {
+    pac::RESETS.reset().write_value(peris);
+}
+
+pub unsafe fn unreset_wait(peris: Peripherals) {
+    // TODO use the "atomic clear" register version
+    pac::RESETS
+        .reset()
+        .modify(|v| *v = Peripherals(v.0 & !peris.0));
+    while ((!pac::RESETS.reset_done().read().0) & peris.0) != 0 {}
+}