1 files changed, 10 insertions, 0 deletions
diff --git a/arm9/lib/src/OS_interrupt.c b/arm9/lib/src/OS_interrupt.c
index f7a6d005..1fb43821 100644
--- a/arm9/lib/src/OS_interrupt.c
+++ b/arm9/lib/src/OS_interrupt.c
@@ -77,3 +77,13 @@ ARM_FUNC void OSi_EnterDmaCallback(u32 dmaNo, void (*callback) (void *), void *a
 
     OSi_IrqCallbackInfo[dmaNo].enable = OS_EnableIrqMask(mask) & mask;
 }
+
+ARM_FUNC void OSi_EnterTimerCallback(u32 timerNo, void (*callback) (void *), void *arg)
+{
+    OSIrqMask mask = 1UL << (timerNo + 3);
+    OSi_IrqCallbackInfo[timerNo + 4].func = callback;
+    OSi_IrqCallbackInfo[timerNo + 4].arg = arg;
+
+    (void)OS_EnableIrqMask(mask);
+    OSi_IrqCallbackInfo[timerNo + 4].enable = TRUE;
+}