Merge SD stuff into fusee-secondary. Switch diskio to single-sector reads temporarily

fusee/fusee-secondary/src/supplies.h

@@ -0,0 +1,31 @@
+/**
+ * Fusée power supply control code
+ *  ~ktemkin
+ */
+
+#ifndef __FUSEE_SUPPLIES_H__
+#define __FUSEE_SUPPLIES_H__
+
+#include "utils.h"
+
+enum switch_power_supply {
+    SUPPLY_MICROSD,
+};
+
+
+enum switch_power_constants {
+
+    /* MicroSD card */
+    SUPPLY_MICROSD_REGULATOR = 6,
+    SUPPLY_MICROSD_VOLTAGE = 3300000,
+
+};
+
+/**
+ * Enables a given power supply.
+ *
+ * @param supply The power domain on the Switch that is to be enabled.
+ */
+void supply_enable(enum switch_power_supply supply);
+
+#endif