1 files changed, 44 insertions, 0 deletions
diff --git a/watch-library/hardware/watch/watch.c b/watch-library/hardware/watch/watch.c
new file mode 100644
index 00000000..791fd974
--- /dev/null
+++ b/watch-library/hardware/watch/watch.c
@@ -0,0 +1,44 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2021 Joey Castillo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "watch.h"
+
+bool battery_is_low = false;
+
+// receives interrupts from MCLK, OSC32KCTRL, OSCCTRL, PAC, PM, SUPC and TAL, whatever that is.
+void SYSTEM_Handler(void) {
+    if (SUPC->INTFLAG.bit.BOD33DET) {
+        battery_is_low = true;
+        SUPC->INTENCLR.bit.BOD33DET = 1;
+        SUPC->INTFLAG.reg &= ~SUPC_INTFLAG_BOD33DET;
+    }
+}
+
+bool watch_is_battery_low(void) {
+    return battery_is_low;
+}
+
+bool watch_is_buzzer_or_led_enabled(void){
+    return hri_mclk_get_APBCMASK_TCC0_bit(MCLK);
+}