diff --git a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
index 59c5b08ef..ef0228f08 100644
--- a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
+++ b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
@@ -26,6 +26,18 @@
 
 #include "startup_defs.h"
 
+static vhal_pal_conf_t vpal_config1 = {
+  .nvpio    = 1U,
+  .vpio     = {
+    [0]     = {
+      .permissions  = VPIO_PERM_WRITE,
+      .port         = GPIOA,
+      .mask         = 1U,
+      .offset       = GPIOA_LED_GREEN
+    }
+  }
+};
+
 /*===========================================================================*/
 /* VFS-related.                                                              */
 /*===========================================================================*/
diff --git a/os/sb/vhal/sbvhal.h b/os/sb/vhal/sbvhal.h
index f8c1f7383..d2d811a80 100644
--- a/os/sb/vhal/sbvhal.h
+++ b/os/sb/vhal/sbvhal.h
@@ -57,6 +57,7 @@ typedef struct vhal_conf {
   /**
    * @brief   VPAL configuration.
    */
+  const vhal_pal_conf_t     *vpalconf;
 #endif
 } vhal_conf_t;
 
diff --git a/os/sb/vhal/sbvhal.mk b/os/sb/vhal/sbvhal.mk
index eff236561..68968963f 100644
--- a/os/sb/vhal/sbvhal.mk
+++ b/os/sb/vhal/sbvhal.mk
@@ -1,5 +1,6 @@
 # List of the ChibiOS sandbox VHAL files.
-SBVHALSRC = $(CHIBIOS)/os/sb/vhal/sbvhal.c
+SBVHALSRC = $(CHIBIOS)/os/sb/vhal/sbvhal.c \
+            $(CHIBIOS)/os/sb/vhal/sbvhal_pal.c
  
 SBVHALASM =
 
diff --git a/os/sb/vhal/sbvhal_pal.c b/os/sb/vhal/sbvhal_pal.c
index 8211b17d2..87dc5a0fd 100644
--- a/os/sb/vhal/sbvhal_pal.c
+++ b/os/sb/vhal/sbvhal_pal.c
@@ -59,7 +59,7 @@ void sb_api_vhal_pal(struct port_extctx *ectxp) {
 
   switch (sub) {
   case 0:
-    palWriteBus(bus, bits);
+    palWriteGroup(GPIOA, 0, 0, 0);
   }
 
   ectxp->r0 = CH_RET_SUCCESS;
diff --git a/os/sb/vhal/sbvhal_pal.h b/os/sb/vhal/sbvhal_pal.h
index 39ab733e0..f8670c520 100644
--- a/os/sb/vhal/sbvhal_pal.h
+++ b/os/sb/vhal/sbvhal_pal.h
@@ -25,8 +25,8 @@
  * @{
  */
 
-#ifndef SBVHAL_H
-#define SBVHAL_H
+#ifndef SBVHAL_PAL_H
+#define SBVHAL_PAL_H
 
 #if (SB_CFG_ENABLE_VHAL_PAL == TRUE) || defined(__DOXYGEN__)
 
@@ -39,6 +39,15 @@
  */
 #define SB_SVC200_HANDLER       sb_api_vhal_pal
 
+/**
+ * @name    VPIO permissions
+ * @{
+ */
+#define VPIO_PERM_READ          1U
+#define VPIO_PERM_WRITE         2U
+#define VPIO_PERM_CHANGEMODE    4U
+/** @} */
+
 /*===========================================================================*/
 /* Module pre-compile time settings.                                         */
 /*===========================================================================*/
@@ -55,6 +64,13 @@
  * @brief   Type of a VHAL PAL instance configuration structure.
  */
 typedef struct vhal_pal_conf {
+  uint32_t          nvpio;
+  struct {
+    uint32_t        permissions;
+    ioportid_t      port;
+    ioportmask_t    mask;
+    uint32_t        offset;
+  } vpio[];
 } vhal_pal_conf_t;
 
 /*===========================================================================*/
@@ -79,6 +95,6 @@ extern "C" {
 
 #endif /* SB_CFG_ENABLE_VHAL == TRUE */
 
-#endif /* SBVHAL_H */
+#endif /* SBVHAL_PAL_H */
 
 /** @} */