boards/remote-revb: define default MTD device

boards/remote-revb/Kconfig

@@ -14,5 +14,13 @@ config BOARD_REMOTE_REVB
     select HAS_ARDUINO
     select HAVE_SAUL_ADC
     select HAVE_SAUL_GPIO
+    select HAS_SDCARD_SPI
+
+    select HAVE_MTD_SDCARD
+    select HAVE_SDCARD_SPI
+
+    select MODULE_FATFS_VFS if MODULE_VFS_DEFAULT
+    select MODULE_MTD if MODULE_VFS_DEFAULT
+    select MODULE_SDCARD_SPI if MODULE_MTD
 
 source "$(RIOTBOARD)/common/remote/Kconfig"

boards/remote-revb/Makefile.dep

@@ -1,3 +1,13 @@
 USEMODULE += boards_common_remote
 
+ifneq (,$(filter mtd,$(USEMODULE)))
+  USEMODULE += mtd_sdcard
+endif
+
+# default to using fatfs on SD card
+ifneq (,$(filter vfs_default,$(USEMODULE)))
+  USEMODULE += fatfs_vfs
+  USEMODULE += mtd
+endif
+
 include $(RIOTBOARD)/common/remote/Makefile.dep

boards/remote-revb/Makefile.features

@@ -1,3 +1,4 @@
 include $(RIOTBOARD)/common/remote/Makefile.features
 
 FEATURES_PROVIDED += arduino
+FEATURES_PROVIDED += sdcard_spi

boards/remote-revb/board.c

@@ -24,6 +24,35 @@
 #include "cpu.h"
 #include "fancy_leds.h"
 
+#if defined(MODULE_MTD_SDCARD)
+#include "mtd_sdcard.h"
+#include "sdcard_spi.h"
+#include "sdcard_spi_params.h"
+
+#if defined(MODULE_FATFS_VFS)
+#include "fs/fatfs.h"
+#include "vfs_default.h"
+#endif
+
+/* this is provided by the sdcard_spi driver see drivers/sdcard_spi/sdcard_spi.c */
+extern sdcard_spi_t sdcard_spi_devs[ARRAY_SIZE(sdcard_spi_params)];
+
+mtd_sdcard_t mtd_sdcard_dev = {
+    .base = {
+        .driver = &mtd_sdcard_driver,
+    },
+    .sd_card = &sdcard_spi_devs[0],
+    .params = &sdcard_spi_params[0]
+};
+
+mtd_dev_t *mtd0 = (mtd_dev_t *)&mtd_sdcard_dev;
+
+#if IS_USED(MODULE_FATFS_VFS)
+VFS_AUTO_MOUNT(fatfs, VFS_MTD(mtd_sdcard_dev), VFS_DEFAULT_SD(0), 0);
+#endif /* MODULE_FATFS_VFS */
+
+#endif /* MODULE_MTD_SDCARD */
+
 /**
  * @brief Initialize the boards on-board LEDs
  *

boards/remote-revb/include/board.h

@@ -23,6 +23,7 @@
 #define BOARD_H
 
 #include "cpu.h"
+#include "mtd.h"
 #include "board_common.h"
 
 #ifdef __cplusplus
@@ -122,6 +123,12 @@
 #define SDCARD_SPI_PARAM_POWER_AH  false
 /** @} */
 
+/** Default MTD device */
+#define MTD_0 mtd0
+
+/** mtd flash emulation device */
+extern mtd_dev_t *mtd0;
+
 #ifdef __cplusplus
 } /* end extern "C" */
 #endif