diff --git a/configs/ea3131/src/up_usbmsc.c b/configs/ea3131/src/up_usbmsc.c
index aee0224901..b80ea35be3 100644
--- a/configs/ea3131/src/up_usbmsc.c
+++ b/configs/ea3131/src/up_usbmsc.c
@@ -92,7 +92,7 @@ int usbmsc_archinitialize(void)
   pbuffer = (uint8_t *)kmm_malloc(BUFFER_SIZE);
   if (!pbuffer)
     {
-      lowsyslog("usbmsc_archinitialize: Failed to allocate ramdisk of size %d\n",
+      lowsyslog(LOG_ERR, "ERROR: Failed to allocate ramdisk of size %d\n",
                 BUFFER_SIZE);
       return -ENOMEM;
     }
@@ -106,7 +106,8 @@ int usbmsc_archinitialize(void)
                          true);
   if (ret < 0)
     {
-      printf("create_ramdisk: Failed to register ramdisk at %s: %d\n",
+      syslog(LOG_ERR,
+             "ERROR: create_ramdisk: Failed to register ramdisk at %s: %d\n",
              g_source, -ret);
       kmm_free(pbuffer);
       return ret;
@@ -117,7 +118,8 @@ int usbmsc_archinitialize(void)
   ret = mkfatfs(g_source, &g_fmt);
   if (ret < 0)
     {
-      printf("create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
+      syslog(LOG_ERR,
+             "ERROR: create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
              g_source);
       /* kmm_free(pbuffer); -- RAM disk is registered */
       return ret;
diff --git a/configs/px4fmu-v2_upstream/src/px4fmu2_init.c b/configs/px4fmu-v2_upstream/src/px4fmu2_init.c
index dfa061e9da..e2813c89fd 100644
--- a/configs/px4fmu-v2_upstream/src/px4fmu2_init.c
+++ b/configs/px4fmu-v2_upstream/src/px4fmu2_init.c
@@ -83,22 +83,6 @@
 #define LED_BLUE       0
 #define LED_SAFETY     2
 
-/* Debug ********************************************************************/
-
-#ifdef CONFIG_CPP_HAVE_VARARGS
-#  ifdef CONFIG_DEBUG
-#    define message(...) lowsyslog(__VA_ARGS__)
-#  else
-#    define message(...) printf(__VA_ARGS__)
-#  endif
-#else
-#  ifdef CONFIG_DEBUG
-#    define message lowsyslog
-#  else
-#    define message printf
-#  endif
-#endif
-
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -138,7 +122,7 @@ static void dma_alloc_init(void)
 
   if (dma_allocator == NULL)
     {
-      message("[boot] DMA allocator setup FAILED");
+      syslog(LOG_INFO, "[boot] DMA allocator setup FAILED");
     }
 }
 #else
@@ -239,7 +223,7 @@ int nsh_archinitialize(void)
   spi1 = up_spiinitialize(1);
   if (!spi1)
     {
-      message("[boot] FAILED to initialize SPI port 1\n");
+      syslog(LOG_ERR, "[boot] FAILED to initialize SPI port 1\n");
       board_led_on(LED_AMBER);
       return -ENODEV;
     }
@@ -255,14 +239,14 @@ int nsh_archinitialize(void)
   SPI_SELECT(spi1, PX4_SPIDEV_MPU, false);
   up_udelay(20);
 
-  message("[boot] Initialized SPI port 1 (SENSORS)\n");
+  syslog(LOG_INFO, "[boot] Initialized SPI port 1 (SENSORS)\n");
 
   /* Get the SPI port for the FRAM */
 
   spi2 = up_spiinitialize(2);
   if (!spi2)
     {
-      message("[boot] FAILED to initialize SPI port 2\n");
+      syslog(LOG_ERR, "[boot] FAILED to initialize SPI port 2\n");
       board_led_on(LED_AMBER);
       return -ENODEV;
     }
@@ -278,7 +262,7 @@ int nsh_archinitialize(void)
   SPI_SETMODE(spi2, SPIDEV_MODE3);
   SPI_SELECT(spi2, SPIDEV_FLASH, false);
 
-  message("[boot] Initialized SPI port 2 (RAMTRON FRAM)\n");
+  syslog(LOG_INFO, "[boot] Initialized SPI port 2 (RAMTRON FRAM)\n");
 
 #ifdef CONFIG_MMCSD
   /* First, get an instance of the SDIO interface */
@@ -286,8 +270,8 @@ int nsh_archinitialize(void)
   sdio = sdio_initialize(CONFIG_NSH_MMCSDSLOTNO);
   if (!sdio)
     {
-      message("[boot] Failed to initialize SDIO slot %d\n",
-              CONFIG_NSH_MMCSDSLOTNO);
+      syslog(LOG_ERR, "[boot] Failed to initialize SDIO slot %d\n",
+             CONFIG_NSH_MMCSDSLOTNO);
       return -ENODEV;
     }
 
@@ -296,7 +280,7 @@ int nsh_archinitialize(void)
   ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, sdio);
   if (ret != OK)
     {
-      message("[boot] Failed to bind SDIO to the MMC/SD driver: %d\n", ret);
+      syslog(LOG_ERR, "[boot] Failed to bind SDIO to the MMC/SD driver: %d\n", ret);
       return ret;
     }
 
@@ -306,7 +290,7 @@ int nsh_archinitialize(void)
 
   sdio_mediachange(sdio, true);
 
-  message("[boot] Initialized SDIO\n");
+  syslog(LOG_INFO, "[boot] Initialized SDIO\n");
 #endif
 
   return OK;
diff --git a/configs/sam4e-ek/src/sam_ili9325.c b/configs/sam4e-ek/src/sam_ili9325.c
index bc68839236..eb419c467d 100644
--- a/configs/sam4e-ek/src/sam_ili9325.c
+++ b/configs/sam4e-ek/src/sam_ili9325.c
@@ -577,14 +577,14 @@ static void sam_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels)
 {
   int i, j;
 
-  syslog("\n%s:\n", msg);
+  syslog(LOG_DEBUG, "\n%s:\n", msg);
   for (i = 0; i < npixels; i += 16)
     {
       up_putc(' ');
-      syslog(" ");
+      syslog(LOG_DEBUG, " ");
       for (j = 0; j < 16; j++)
         {
-          syslog(" %04x", *run++);
+          syslog(LOG_DEBUG, " %04x", *run++);
         }
       up_putc('\n');
     }
diff --git a/configs/sam4e-ek/src/sam_ili9341.c b/configs/sam4e-ek/src/sam_ili9341.c
index 9c23e18f45..6e54073ee9 100644
--- a/configs/sam4e-ek/src/sam_ili9341.c
+++ b/configs/sam4e-ek/src/sam_ili9341.c
@@ -608,15 +608,16 @@ static void sam_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels)
 {
   int i, j;
 
-  syslog("\n%s:\n", msg);
+  syslog(LOG_DEBUG, "\n%s:\n", msg);
   for (i = 0; i < npixels; i += 16)
     {
       up_putc(' ');
-      syslog(" ");
+      syslog(LOG_DEBUG, " ");
       for (j = 0; j < 16; j++)
         {
-          syslog(" %04x", *run++);
+          syslog(LOG_DEBUG, " %04x", *run++);
         }
+
       up_putc('\n');
     }
 }
diff --git a/configs/sama5d4-ek/src/sam_bringup.c b/configs/sama5d4-ek/src/sam_bringup.c
index f4782bd8cd..436d0253e2 100644
--- a/configs/sama5d4-ek/src/sam_bringup.c
+++ b/configs/sama5d4-ek/src/sam_bringup.c
@@ -70,13 +70,9 @@
 /* Debug ********************************************************************/
 
 #ifdef CONFIG_BOARD_INITIALIZE
-#  define message lldbg
+#  define SYSLOG lldbg
 #else
-#  ifdef CONFIG_CPP_HAVE_VARARGS
-#    define message(...) syslog(__VA_ARGS__)
-#  else
-#    define message syslog
-#  endif
+#  define SYSLOG dbg
 #endif
 
 /****************************************************************************
@@ -105,7 +101,7 @@ int sam_bringup(void)
   ret = sam_nand_automount(NAND_MINOR);
   if (ret < 0)
     {
-      message("ERROR: sam_nand_automount failed: %d\n", ret);
+      SYSLOG("ERROR: sam_nand_automount failed: %d\n", ret);
     }
 #endif
 
@@ -115,7 +111,7 @@ int sam_bringup(void)
   ret = sam_at25_automount(AT25_MINOR);
   if (ret < 0)
     {
-      message("ERROR: sam_at25_automount failed: %d\n", ret);
+      SYSLOG("ERROR: sam_at25_automount failed: %d\n", ret);
     }
 #endif
 
@@ -126,8 +122,8 @@ int sam_bringup(void)
   ret = sam_hsmci_initialize(HSMCI0_SLOTNO, HSMCI0_MINOR);
   if (ret < 0)
     {
-      message("ERROR: sam_hsmci_initialize(%d,%d) failed: %d\n",
-              HSMCI0_SLOTNO, HSMCI0_MINOR, ret);
+      SYSLOG("ERROR: sam_hsmci_initialize(%d,%d) failed: %d\n",
+             HSMCI0_SLOTNO, HSMCI0_MINOR, ret);
     }
 
 #ifdef CONFIG_SAMA5D4EK_HSMCI0_MOUNT
@@ -143,8 +139,8 @@ int sam_bringup(void)
 
       if (ret < 0)
         {
-          message("ERROR: Failed to mount %s: %d\n",
-                  CONFIG_SAMA5D4EK_HSMCI0_MOUNT_MOUNTPOINT, errno);
+          SYSLOG("ERROR: Failed to mount %s: %d\n",
+                 CONFIG_SAMA5D4EK_HSMCI0_MOUNT_MOUNTPOINT, errno);
         }
     }
 #endif
@@ -156,8 +152,8 @@ int sam_bringup(void)
   ret = sam_hsmci_initialize(HSMCI1_SLOTNO, HSMCI1_MINOR);
   if (ret < 0)
     {
-      message("ERROR: sam_hsmci_initialize(%d,%d) failed: %d\n",
-              HSMCI1_SLOTNO, HSMCI1_MINOR, ret);
+      SYSLOG("ERROR: sam_hsmci_initialize(%d,%d) failed: %d\n",
+             HSMCI1_SLOTNO, HSMCI1_MINOR, ret);
     }
 
 #ifdef CONFIG_SAMA5D4EK_HSMCI1_MOUNT
@@ -173,8 +169,8 @@ int sam_bringup(void)
 
       if (ret < 0)
         {
-          message("ERROR: Failed to mount %s: %d\n",
-                  CONFIG_SAMA5D4EK_HSMCI1_MOUNT_MOUNTPOINT, errno);
+          SYSLOG("ERROR: Failed to mount %s: %d\n",
+                 CONFIG_SAMA5D4EK_HSMCI1_MOUNT_MOUNTPOINT, errno);
         }
     }
 #endif
@@ -195,7 +191,7 @@ int sam_bringup(void)
                          CONFIG_SAMA5D4EK_ROMFS_ROMDISK_SECTSIZE);
   if (ret < 0)
     {
-      message("ERROR: romdisk_register failed: %d\n", -ret);
+      SYSLOG("ERROR: romdisk_register failed: %d\n", -ret);
     }
   else
     {
@@ -206,9 +202,9 @@ int sam_bringup(void)
                   "romfs", MS_RDONLY, NULL);
       if (ret < 0)
         {
-          message("ERROR: mount(%s,%s,romfs) failed: %d\n",
-                  CONFIG_SAMA5D4EK_ROMFS_ROMDISK_DEVNAME,
-                  CONFIG_SAMA5D4EK_ROMFS_MOUNT_MOUNTPOINT, errno);
+          SYSLOG("ERROR: mount(%s,%s,romfs) failed: %d\n",
+                 CONFIG_SAMA5D4EK_ROMFS_ROMDISK_DEVNAME,
+                 CONFIG_SAMA5D4EK_ROMFS_MOUNT_MOUNTPOINT, errno);
         }
     }
 #endif
@@ -221,7 +217,7 @@ int sam_bringup(void)
   ret = sam_usbhost_initialize();
   if (ret != OK)
     {
-      message("ERROR: Failed to initialize USB host: %d\n", ret);
+      SYSLOG("ERROR: Failed to initialize USB host: %d\n", ret);
     }
 #endif
 
@@ -231,7 +227,7 @@ int sam_bringup(void)
   ret = usbmonitor_start(0, NULL);
   if (ret != OK)
     {
-      message("ERROR: Failed to start the USB monitor: %d\n", ret);
+      SYSLOG("ERROR: Failed to start the USB monitor: %d\n", ret);
     }
 #endif
 
@@ -241,7 +237,7 @@ int sam_bringup(void)
   ret = sam_wm8904_initialize(0);
   if (ret != OK)
     {
-      message("ERROR: Failed to initialize WM8904 audio: %d\n", ret);
+      SYSLOG("ERROR: Failed to initialize WM8904 audio: %d\n", ret);
     }
 #endif
 
@@ -251,18 +247,18 @@ int sam_bringup(void)
   ret = sam_audio_null_initialize(0);
   if (ret != OK)
     {
-      message("ERROR: Failed to initialize the NULL audio device: %d\n", ret);
+      SYSLOG("ERROR: Failed to initialize the NULL audio device: %d\n", ret);
     }
 #endif
 
 #ifdef HAVE_ELF
   /* Initialize the ELF binary loader */
 
-  message("Initializing the ELF binary loader\n");
+  SYSLOG("Initializing the ELF binary loader\n");
   ret = elf_initialize();
   if (ret < 0)
     {
-      message("ERROR: Initialization of the ELF loader failed: %d\n", ret);
+      SYSLOG("ERROR: Initialization of the ELF loader failed: %d\n", ret);
     }
 #endif
 
diff --git a/configs/shenzhou/src/up_ili93xx.c b/configs/shenzhou/src/up_ili93xx.c
index 7467c0d1dc..cfe27cd95b 100644
--- a/configs/shenzhou/src/up_ili93xx.c
+++ b/configs/shenzhou/src/up_ili93xx.c
@@ -832,15 +832,16 @@ static void stm32_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels
 {
   int i, j;
 
-  syslog("\n%s:\n", msg);
+  syslog(LOG_DEBUG, "\n%s:\n", msg);
   for (i = 0; i < npixels; i += 16)
     {
       up_putc(' ');
-      syslog(" ");
+      syslog(LOG_DEBUG, " ");
       for (j = 0; j < 16; j++)
         {
-          syslog(" %04x", *run++);
+          syslog(LOG_DEBUG, " %04x", *run++);
         }
+
       up_putc('\n');
     }
 }
diff --git a/configs/stm3210e-eval/src/up_lcd.c b/configs/stm3210e-eval/src/up_lcd.c
index cf446a11fa..ffa32c415f 100644
--- a/configs/stm3210e-eval/src/up_lcd.c
+++ b/configs/stm3210e-eval/src/up_lcd.c
@@ -703,14 +703,14 @@ static void stm3210e_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npix
 {
   int i, j;
 
-  syslog("\n%s:\n", msg);
+  syslog(LOG_DEBUG, "\n%s:\n", msg);
   for (i = 0; i < npixels; i += 16)
     {
       up_putc(' ');
-      syslog(" ");
+      syslog(LOG_DEBUG, " ");
       for (j = 0; j < 16; j++)
         {
-          syslog(" %04x", *run++);
+          syslog(LOG_DEBUG, " %04x", *run++);
         }
       up_putc('\n');
     }
diff --git a/configs/stm3210e-eval/src/up_pmbuttons.c b/configs/stm3210e-eval/src/up_pmbuttons.c
index d82edfbb8a..4e35498f10 100644
--- a/configs/stm3210e-eval/src/up_pmbuttons.c
+++ b/configs/stm3210e-eval/src/up_pmbuttons.c
@@ -308,7 +308,7 @@ void up_pmbuttons(void)
 
       if (oldhandler != NULL)
         {
-          lowsyslog("WARNING: oldhandler:%p is not NULL!  "
+          lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
                     "Button events may be lost or aliased!\n",
                     oldhandler);
         }
diff --git a/configs/stm3240g-eval/src/up_lcd.c b/configs/stm3240g-eval/src/up_lcd.c
index 5aaa60a47f..af6d557458 100644
--- a/configs/stm3240g-eval/src/up_lcd.c
+++ b/configs/stm3240g-eval/src/up_lcd.c
@@ -549,14 +549,14 @@ static void stm3240g_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npix
 {
   int i, j;
 
-  syslog("\n%s:\n", msg);
+  syslog(LOG_DEBUG, "\n%s:\n", msg);
   for (i = 0; i < npixels; i += 16)
     {
       up_putc(' ');
-      syslog(" ");
+      syslog(LOG_DEBUG, " ");
       for (j = 0; j < 16; j++)
         {
-          syslog(" %04x", *run++);
+          syslog(LOG_DEBUG, " %04x", *run++);
         }
       up_putc('\n');
     }
diff --git a/configs/stm32f4discovery/src/stm32_pmbuttons.c b/configs/stm32f4discovery/src/stm32_pmbuttons.c
index d18cb6a1ba..b060e9a55b 100644
--- a/configs/stm32f4discovery/src/stm32_pmbuttons.c
+++ b/configs/stm32f4discovery/src/stm32_pmbuttons.c
@@ -138,9 +138,9 @@ void stm32_pm_buttons(void)
 
       if (oldhandler != NULL)
         {
-          lowsyslog("WARNING: oldhandler:%p is not NULL!  "
-                        "Button events may be lost or aliased!\n",
-                        oldhandler);
+          lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL!  "
+                   "Button events may be lost or aliased!\n",
+                   oldhandler);
         }
 #endif
 }
diff --git a/configs/vsn/src/vsn.h b/configs/vsn/src/vsn.h
index e84f0acb49..79195e2bcc 100644
--- a/configs/vsn/src/vsn.h
+++ b/configs/vsn/src/vsn.h
@@ -169,25 +169,6 @@
 /* Expansion Connector */
 
 
-/************************************************************************************
- * Debugging
- ************************************************************************************/
-
-#ifdef CONFIG_CPP_HAVE_VARARGS
-#  ifdef CONFIG_DEBUG
-#    define message(...) lowsyslog(__VA_ARGS__)
-#  else
-#    define message(...) printf(__VA_ARGS__)
-#  endif
-#else
-#  ifdef CONFIG_DEBUG
-#    define message lowsyslog
-#  else
-#    define message printf
-#  endif
-#endif
-
-
 /************************************************************************************
  * Public data
  ************************************************************************************/