FatFs integration (SDIO backend) (#242)

extras/fatfs/volumes.c

@@ -0,0 +1,43 @@
+/*
+ * FatFs integration to esp-open-rtos
+ *
+ * Part of esp-open-rtos
+ * Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
+ * BSD Licensed as described in the file LICENSE
+ */
+#include "volumes.h"
+#include <stddef.h>
+
+const char *volumes[] = {
+    [0] = "3:",
+    [1] = NULL,
+    [2] = "4:",
+    [3] = NULL,
+    [4] = "2:",
+    [5] = "1:",
+    [6] = NULL,
+    [7] = NULL,
+    [8] = NULL,
+    [9] = NULL,
+    [10] = NULL,
+    [11] = NULL,
+    [12] = NULL,
+    [13] = NULL,
+    [14] = NULL,
+    [15] = "0:",
+    [16] = "5:"
+};
+
+const uint8_t pins[] = {
+    15, 5, 4, 0, 2, 16
+};
+
+const char *f_gpio_to_volume(uint8_t gpio)
+{
+    return gpio > 16 ? NULL : volumes[gpio];
+}
+
+uint8_t f_drv_to_gpio(uint8_t drv)
+{
+    return pins[drv];
+}