From e0cdc356ccd7f9e20c2b5355cc52b7eb7610147b Mon Sep 17 00:00:00 2001
From: i509VCB <git@i509.me>
Date: Thu, 13 Mar 2025 22:10:45 -0500
Subject: Embassy for MSPM0

This adds an embassy hal for the Texas Instruments MSPM0 microcontroller series.

So far the GPIO and time drivers have been implemented. I have tested these drivers on the following parts:
- C1104
- L1306
- L2228
- G3507
- G3519

The PAC is generated at https://github.com/mspm0-rs
---
 embassy-mspm0/src/timer.rs | 48 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 embassy-mspm0/src/timer.rs

(limited to 'embassy-mspm0/src/timer.rs')

diff --git a/embassy-mspm0/src/timer.rs b/embassy-mspm0/src/timer.rs
new file mode 100644
index 000000000..4441e5640
--- /dev/null
+++ b/embassy-mspm0/src/timer.rs
@@ -0,0 +1,48 @@
+#![macro_use]
+
+/// Amount of bits of a timer.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum TimerBits {
+    /// 16 bits.
+    Bits16,
+    /// 32 bits.
+    Bits32,
+}
+
+#[allow(private_bounds)]
+pub trait Timer: SealedTimer + 'static {
+    /// Amount of bits this timer has.
+    const BITS: TimerBits;
+}
+
+pub(crate) trait SealedTimer {
+    /// Registers for this timer.
+    ///
+    /// This is a raw pointer to the register block. The actual register block layout varies depending on the
+    /// timer type.
+    fn regs() -> *mut ();
+
+    /// Enable the interrupt corresponding to this timer.
+    unsafe fn enable_interrupt();
+}
+
+macro_rules! impl_timer {
+    ($name: ident, $bits: ident) => {
+        impl crate::timer::SealedTimer for crate::peripherals::$name {
+            fn regs() -> *mut () {
+                crate::pac::$name.as_ptr()
+            }
+
+            unsafe fn enable_interrupt() {
+                use embassy_hal_internal::interrupt::InterruptExt;
+                crate::interrupt::$name.unpend();
+                crate::interrupt::$name.enable();
+            }
+        }
+
+        impl crate::timer::Timer for crate::peripherals::$name {
+            const BITS: crate::timer::TimerBits = crate::timer::TimerBits::$bits;
+        }
+    };
+}
-- 
cgit