From 79002a419096747ea465b608c5caa3c1178e4944 Mon Sep 17 00:00:00 2001
From: Uwe Hermann <uwe@hermann-uwe.de>
Date: Sun, 30 Jun 2019 16:15:19 +0200
Subject: [PATCH 1/1] spi_mode: cmds: Add a small README.

---
 sdcard/spi_mode/cmds/README | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 sdcard/spi_mode/cmds/README

diff --git a/sdcard/spi_mode/cmds/README b/sdcard/spi_mode/cmds/README
new file mode 100644
index 0000000..4f10892
--- /dev/null
+++ b/sdcard/spi_mode/cmds/README
@@ -0,0 +1,25 @@
+-------------------------------------------------------------------------------
+SD card / SPI-mode / Commands
+-------------------------------------------------------------------------------
+
+This is a set of example captures of individual SD card commands in SPI-mode.
+
+
+Logic analyzer setup
+--------------------
+
+The logic analyzer used was an FX2-based device (at 24MHz):
+
+  Probe       SD card
+  -------------------
+  0           MOSI
+  1           MISO
+  2           CLK
+  3           CS#
+
+
+cmd17.sr
+--------
+
+This file contains a CMD17 (READ_SINGLE_BLOCK) sequence, reading 512 bytes
+from address 0x000f. The first few bytes of the data are "sigrok rocks".
-- 
2.30.2