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-rw-r--r--docs/library/machine.RTC.rst5
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/library/machine.RTC.rst b/docs/library/machine.RTC.rst
index ad0b0759e..a45718903 100644
--- a/docs/library/machine.RTC.rst
+++ b/docs/library/machine.RTC.rst
@@ -62,10 +62,13 @@ Methods
Get the number of milliseconds left before the alarm expires.
-.. method:: RTC.cancel(alarm_id=0)
+.. method:: RTC.alarm_cancel(alarm_id=0)
Cancel a running alarm.
+ The mimxrt port also exposes this function as ``RTC.cancel(alarm_id=0)``, but this is
+ scheduled to be removed in MicroPython 2.0.
+
.. method:: RTC.irq(*, trigger, handler=None, wake=machine.IDLE)
Create an irq object triggered by a real time clock alarm.