First commit

1 files changed, 95 insertions, 0 deletions

diff --git a/drivers/rtwdog/src/lib.rs b/drivers/rtwdog/src/lib.rs
new file mode 100644
index 0000000..9734813
--- /dev/null
+++ b/drivers/rtwdog/src/lib.rs
@@ -0,0 +1,95 @@
+#![no_std]
+
+pub type Instance = ral_registers::Instance<RegisterBlock>;
+
+#[allow(non_snake_case)]
+#[repr(C)]
+pub struct RegisterBlock {
+    pub CS: u32,
+    pub CNT: u32,
+    pub TOVAL: u32,
+    pub WIN: u32,
+}
+
+/// Written to `CNT` during the unlock sequence.
+pub const RTWDOG_MAGIC: u32 = 0xD928_C520;
+
+ral_registers::register! {
+    #[doc = "Watchdog Control and Status Register"]
+    pub CS<u32> RW [
+        #[doc = "Stop Enable"]
+        STOP start(0) width(1) RW {}
+        #[doc = "Wait Enable"]
+        WAIT start(1) width(1) RW {}
+        #[doc = "Debug Enable"]
+        DBG start(2) width(1) RW {}
+        #[doc = "Watchdog Test"]
+        TST start(3) width(2) RW {
+            #[doc = "Watchdog test mode disabled."]
+            DISABLED = 0,
+            #[doc = "Watchdog user mode enabled. (Watchdog test mode disabled.) After testing the watchdog, software should use this setting to indicate that the watchdog is functioning normally in user mode."]
+            USER_MODE = 0x1,
+            #[doc = "Watchdog test mode enabled, only the low byte is used. CNT[CNTLOW] is compared with TOVAL[TOVALLOW]."]
+            TEST_LOW_BYTE_ONLY = 0x2,
+            #[doc = "Watchdog test mode enabled, only the high byte is used. CNT[CNTHIGH] is compared with TOVAL[TOVALHIGH]."]
+            TEST_HIGH_BYTE_ONLY = 0x3,
+        }
+        #[doc = "Allow updates"]
+        UPDATE start(5) width(1) RW {}
+        #[doc = "Watchdog Interrupt"]
+        INT start(6) width(1) RW {}
+        #[doc = "Watchdog Enable"]
+        EN start(7) width(1) RW {}
+        #[doc = "Watchdog Clock"]
+        CLK start(8) width(2) RW {}
+        #[doc = "Reconfiguration Success"]
+        RCS start(10) width(1) RO {}
+        #[doc = "Unlock status"]
+        ULK start(11) width(1) RO {}
+        #[doc = "Watchdog prescaler"]
+        PRES start(12) width(1) RW {}
+        #[doc = "Enables or disables WDOG support for 32-bit (otherwise 16-bit or 8-bit) refresh/unlock command write words"]
+        CMD32EN start(13) width(1) RW {}
+        #[doc = "Watchdog Interrupt Flag"]
+        FLG start(14) width(1) RW {}
+        #[doc = "Watchdog Window"]
+        WIN start(15) width(1) RW {}
+    ]
+}
+
+ral_registers::register! {
+    #[doc = "Watchdog Counter Register"]
+    pub CNT<u32> RW [
+        #[doc = "Low byte of the Watchdog Counter"]
+        CNTLOW start(0) width(8) RW {}
+        #[doc = "High byte of the Watchdog Counter"]
+        CNTHIGH start(8) width(8) RW {}
+    ]
+}
+
+ral_registers::register! {
+    #[doc = "Watchdog Timeout Value Register"]
+    pub TOVAL<u32> RW [
+        #[doc = "Low byte of the timeout value"]
+        TOVALLOW start(0) width(8) RW {}
+        #[doc = "High byte of the timeout value"]
+        TOVALHIGH start(8) width(8) RW {}
+    ]
+}
+
+ral_registers::register! {
+    #[doc = "Watchdog Window Register"]
+    pub WIN<u32> RW [
+        #[doc = "Low byte of Watchdog Window"]
+        WINLOW start(0) width(8) RW {}
+        #[doc = "High byte of Watchdog Window"]
+        WINHIGH start(8) width(8) RW {}
+    ]
+}
+
+/// Unlike and disable the RTWDOG.
+#[inline]
+pub fn disable(rtwdog: Instance) {
+    ral_registers::write_reg!(self, rtwdog, CNT, RTWDOG_MAGIC);
+    ral_registers::modify_reg!(self, rtwdog, CS, EN: 0);
+}