Set SDCard::_cs pin to be an output.

Smoothie didn't work with my 16GB SD card and it turns out that the
chip select GPIO pin wasn't being set to output mode.

diff --git a/src/libs/USBDevice/USBMSD/SDCard.cpp b/src/libs/USBDevice/USBMSD/SDCard.cpp
index 2f093eb..4cba21c 100644 (file)
--- a/src/libs/USBDevice/USBMSD/SDCard.cpp
+++ b/src/libs/USBDevice/USBMSD/SDCard.cpp
@@ -128,7 +128,8 @@ static const uint8_t OXFF = 0xFF;
 \r
 SDCard::SDCard(PinName mosi, PinName miso, PinName sclk, PinName cs) :\r
   _spi(mosi, miso, sclk), _cs(cs) {\r
-      _cs = 0;\r
+    _cs.output();\r
+    _cs = 1;\r
 }\r
 \r
 #define R1_IDLE_STATE           (1 << 0)\r