cyw43: add Bluetooth support.

Co-Authored-By: Brandon Ros <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/cyw43/src/util.rs b/cyw43/src/util.rs
new file mode 100644
index 000000000..a4adbd4ed
--- /dev/null
+++ b/cyw43/src/util.rs
@@ -0,0 +1,20 @@
+#![allow(unused)]
+
+use core::slice;
+
+pub(crate) fn slice8_mut(x: &mut [u32]) -> &mut [u8] {
+    let len = x.len() * 4;
+    unsafe { slice::from_raw_parts_mut(x.as_mut_ptr() as _, len) }
+}
+
+pub(crate) fn is_aligned(a: u32, x: u32) -> bool {
+    (a & (x - 1)) == 0
+}
+
+pub(crate) fn round_down(x: u32, a: u32) -> u32 {
+    x & !(a - 1)
+}
+
+pub(crate) fn round_up(x: u32, a: u32) -> u32 {
+    ((x + a - 1) / a) * a
+}