From a111889705649465b2fd57a1f10bd34aae9b4435 Mon Sep 17 00:00:00 2001
From: Mike Causer <mcauser@gmail.com>
Date: Fri, 30 Apr 2021 14:04:37 +1000
Subject: [PATCH] docs/esp32: Add SDCard to quickref.

---
 docs/esp32/quickref.rst | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/docs/esp32/quickref.rst b/docs/esp32/quickref.rst
index 5e70275830..a569ff0a4e 100644
--- a/docs/esp32/quickref.rst
+++ b/docs/esp32/quickref.rst
@@ -424,6 +424,21 @@ Notes:
 
     p1 = Pin(4, Pin.OUT, None)
 
+SD card
+-------
+
+See :ref:`machine.SDCard <machine.SDCard>`. ::
+
+    import machine, uos
+
+    # Slot 2 uses pins sck=18, cs=5, miso=19, mosi=23
+    sd = machine.SDCard(slot=2)
+    uos.mount(sd, "/sd")  # mount
+
+    uos.listdir('/sd')    # list directory contents
+
+    uos.umount('/sd')     # eject
+
 RMT
 ---