diff --git a/arch/arm/src/stm32/stm32_serial.c b/arch/arm/src/stm32/stm32_serial.c
index 68136f39581..bfe1b3d08a0 100644
--- a/arch/arm/src/stm32/stm32_serial.c
+++ b/arch/arm/src/stm32/stm32_serial.c
@@ -997,7 +997,7 @@ static struct up_dev_s g_uart8priv =
 
 /* This table lets us iterate over the configured USARTs */
 
-static struct up_dev_s * const uart_devs[STM32_NUSART] =
+static struct up_dev_s * const g_uart_devs[STM32_NUSART] =
 {
 #ifdef CONFIG_STM32_USART1_SERIALDRIVER
   [0] = &g_usart1priv,
@@ -2690,17 +2690,17 @@ FAR uart_dev_t *stm32_serial_get_uart(int uart_num)
 {
   int uart_idx = uart_num - 1;
 
-  if (uart_idx < 0 || uart_idx >= STM32_NUSART || !uart_devs[uart_idx])
+  if (uart_idx < 0 || uart_idx >= STM32_NUSART || !g_uart_devs[uart_idx])
     {
       return NULL;
     }
 
-  if (!uart_devs[uart_idx]->initialized)
+  if (!g_uart_devs[uart_idx]->initialized)
     {
       return NULL;
     }
 
-  return &uart_devs[uart_idx]->dev;
+  return &g_uart_devs[uart_idx]->dev;
 }
 #endif /* HAVE_SERIALDRIVER */
 
@@ -2724,16 +2724,16 @@ void up_earlyserialinit(void)
 
   for (i = 0; i < STM32_NUSART; i++)
     {
-      if (uart_devs[i])
+      if (g_uart_devs[i])
         {
-          up_disableusartint(uart_devs[i], NULL);
+          up_disableusartint(g_uart_devs[i], NULL);
         }
     }
 
   /* Configure whichever one is the console */
 
 #if CONSOLE_UART > 0
-  up_setup(&uart_devs[CONSOLE_UART - 1]->dev);
+  up_setup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* HAVE UART */
 }
@@ -2769,21 +2769,21 @@ void up_serialinit(void)
   /* Register the console */
 
 #if CONSOLE_UART > 0
-  (void)uart_register("/dev/console", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/console", &g_uart_devs[CONSOLE_UART - 1]->dev);
 
 #ifndef CONFIG_STM32_SERIAL_DISABLE_REORDERING
   /* If not disabled, register the console UART to ttyS0 and exclude
    * it from initializing it further down
    */
 
-  (void)uart_register("/dev/ttyS0", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/ttyS0", &g_uart_devs[CONSOLE_UART - 1]->dev);
   minor = 1;
 #endif
 
 #ifdef SERIAL_HAVE_CONSOLE_DMA
   /* If we need to re-initialise the console to enable DMA do that here. */
 
-  up_dma_setup(&uart_devs[CONSOLE_UART - 1]->dev);
+  up_dma_setup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* CONSOLE_UART > 0 */
 
@@ -2795,7 +2795,7 @@ void up_serialinit(void)
     {
       /* Don't create a device for non-configured ports. */
 
-      if (uart_devs[i] == 0)
+      if (g_uart_devs[i] == 0)
         {
           continue;
         }
@@ -2803,7 +2803,7 @@ void up_serialinit(void)
 #ifndef CONFIG_STM32_SERIAL_DISABLE_REORDERING
       /* Don't create a device for the console - we did that above */
 
-      if (uart_devs[i]->dev.isconsole)
+      if (g_uart_devs[i]->dev.isconsole)
         {
           continue;
         }
@@ -2812,7 +2812,7 @@ void up_serialinit(void)
       /* Register USARTs as devices in increasing order */
 
       devname[9] = '0' + minor++;
-      (void)uart_register(devname, &uart_devs[i]->dev);
+      (void)uart_register(devname, &g_uart_devs[i]->dev);
     }
 #endif /* HAVE UART */
 }
@@ -2906,7 +2906,7 @@ void stm32_serial_dma_poll(void)
 int up_putc(int ch)
 {
 #if CONSOLE_UART > 0
-  struct up_dev_s *priv = uart_devs[CONSOLE_UART - 1];
+  struct up_dev_s *priv = g_uart_devs[CONSOLE_UART - 1];
   uint16_t ie;
 
   up_disableusartint(priv, &ie);
diff --git a/arch/arm/src/stm32f0/stm32f0_serial.c b/arch/arm/src/stm32f0/stm32f0_serial.c
index 9ab124263ef..3a188917eeb 100644
--- a/arch/arm/src/stm32f0/stm32f0_serial.c
+++ b/arch/arm/src/stm32f0/stm32f0_serial.c
@@ -719,7 +719,7 @@ static struct stm32f0_serial_s g_usart5priv =
 
 /* This table lets us iterate over the configured USARTs */
 
-FAR static struct stm32f0_serial_s * const uart_devs[STM32F0_NUSART] =
+FAR static struct stm32f0_serial_s * const g_uart_devs[STM32F0_NUSART] =
 {
 #ifdef CONFIG_STM32F0_USART1
   [0] = &g_usart1priv,
@@ -2380,16 +2380,16 @@ void up_earlyserialinit(void)
 
   for (i = 0; i < STM32F0_NUSART; i++)
     {
-      if (uart_devs[i])
+      if (g_uart_devs[i])
         {
-          stm32f0serial_disableusartint(uart_devs[i], NULL);
+          stm32f0serial_disableusartint(g_uart_devs[i], NULL);
         }
     }
 
   /* Configure whichever one is the console */
 
 #if CONSOLE_USART > 0
-  stm32f0serial_setup(&uart_devs[CONSOLE_USART - 1]->dev);
+  stm32f0serial_setup(&g_uart_devs[CONSOLE_USART - 1]->dev);
 #endif
 #endif /* HAVE USART */
 }
@@ -2425,21 +2425,21 @@ void up_serialinit(void)
   /* Register the console */
 
 #if CONSOLE_USART > 0
-  (void)uart_register("/dev/console", &uart_devs[CONSOLE_USART - 1]->dev);
+  (void)uart_register("/dev/console", &g_uart_devs[CONSOLE_USART - 1]->dev);
 
 #ifndef CONFIG_STM32F0_SERIAL_DISABLE_REORDERING
   /* If not disabled, register the console USART to ttyS0 and exclude
    * it from initializing it further down
    */
 
-  (void)uart_register("/dev/ttyS0", &uart_devs[CONSOLE_USART - 1]->dev);
+  (void)uart_register("/dev/ttyS0", &g_uart_devs[CONSOLE_USART - 1]->dev);
   minor = 1;
 #endif
 
 #ifdef SERIAL_HAVE_CONSOLE_DMA
   /* If we need to re-initialise the console to enable DMA do that here. */
 
-  stm32f0serial_dmasetup(&uart_devs[CONSOLE_USART - 1]->dev);
+  stm32f0serial_dmasetup(&g_uart_devs[CONSOLE_USART - 1]->dev);
 #endif
 #endif /* CONSOLE_USART > 0 */
 
@@ -2451,7 +2451,7 @@ void up_serialinit(void)
     {
       /* Don't create a device for non-configured ports. */
 
-      if (uart_devs[i] == 0)
+      if (g_uart_devs[i] == 0)
         {
           continue;
         }
@@ -2459,7 +2459,7 @@ void up_serialinit(void)
 #ifndef CONFIG_STM32F0_SERIAL_DISABLE_REORDERING
       /* Don't create a device for the console - we did that above */
 
-      if (uart_devs[i]->dev.isconsole)
+      if (g_uart_devs[i]->dev.isconsole)
         {
           continue;
         }
@@ -2468,7 +2468,7 @@ void up_serialinit(void)
       /* Register USARTs as devices in increasing order */
 
       devname[9] = '0' + minor++;
-      (void)uart_register(devname, &uart_devs[i]->dev);
+      (void)uart_register(devname, &g_uart_devs[i]->dev);
     }
 #endif /* HAVE USART */
 }
@@ -2541,7 +2541,7 @@ void stm32f0serial_dmapoll(void)
 int up_putc(int ch)
 {
 #if CONSOLE_USART > 0
-  struct stm32f0_serial_s *priv = uart_devs[CONSOLE_USART - 1];
+  struct stm32f0_serial_s *priv = g_uart_devs[CONSOLE_USART - 1];
   uint16_t ie;
 
   stm32f0serial_disableusartint(priv, &ie);
diff --git a/arch/arm/src/stm32f7/stm32_serial.c b/arch/arm/src/stm32f7/stm32_serial.c
index 4537f4bf593..179aa8e6d8c 100644
--- a/arch/arm/src/stm32f7/stm32_serial.c
+++ b/arch/arm/src/stm32f7/stm32_serial.c
@@ -1039,7 +1039,7 @@ static struct up_dev_s g_uart8priv =
 
 /* This table lets us iterate over the configured USARTs */
 
-static struct up_dev_s * const uart_devs[STM32_NSERIAL] =
+static struct up_dev_s * const g_uart_devs[STM32_NSERIAL] =
 {
 #ifdef CONFIG_STM32F7_USART1
   [0] = &g_usart1priv,
@@ -2681,17 +2681,17 @@ FAR uart_dev_t *stm32_serial_get_uart(int uart_num)
 {
   int uart_idx = uart_num - 1;
 
-  if (uart_idx < 0 || uart_idx >= STM32_NSERIAL || !uart_devs[uart_idx])
+  if (uart_idx < 0 || uart_idx >= STM32_NSERIAL || !g_uart_devs[uart_idx])
     {
       return NULL;
     }
 
-  if (!uart_devs[uart_idx]->initialized)
+  if (!g_uart_devs[uart_idx]->initialized)
     {
       return NULL;
     }
 
-  return &uart_devs[uart_idx]->dev;
+  return &g_uart_devs[uart_idx]->dev;
 }
 
 /****************************************************************************
@@ -2714,16 +2714,16 @@ void up_earlyserialinit(void)
 
   for (i = 0; i < STM32_NSERIAL; i++)
     {
-      if (uart_devs[i])
+      if (g_uart_devs[i])
         {
-          up_disableusartint(uart_devs[i], NULL);
+          up_disableusartint(g_uart_devs[i], NULL);
         }
     }
 
   /* Configure whichever one is the console */
 
 #if CONSOLE_UART > 0
-  up_setup(&uart_devs[CONSOLE_UART - 1]->dev);
+  up_setup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* HAVE UART */
 }
@@ -2759,21 +2759,21 @@ void up_serialinit(void)
   /* Register the console */
 
 #if CONSOLE_UART > 0
-  (void)uart_register("/dev/console", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/console", &g_uart_devs[CONSOLE_UART - 1]->dev);
 
 #ifndef CONFIG_STM32F7_SERIAL_DISABLE_REORDERING
   /* If not disabled, register the console UART to ttyS0 and exclude
    * it from initializing it further down
    */
 
-  (void)uart_register("/dev/ttyS0", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/ttyS0", &g_uart_devs[CONSOLE_UART - 1]->dev);
   minor = 1;
 #endif
 
 #ifdef SERIAL_HAVE_CONSOLE_DMA
   /* If we need to re-initialise the console to enable DMA do that here. */
 
-  up_dma_setup(&uart_devs[CONSOLE_UART - 1]->dev);
+  up_dma_setup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* CONSOLE_UART > 0 */
 
@@ -2785,7 +2785,7 @@ void up_serialinit(void)
     {
       /* Don't create a device for non-configured ports. */
 
-      if (uart_devs[i] == 0)
+      if (g_uart_devs[i] == 0)
         {
           continue;
         }
@@ -2793,7 +2793,7 @@ void up_serialinit(void)
 #ifndef CONFIG_STM32F7_SERIAL_DISABLE_REORDERING
       /* Don't create a device for the console - we did that above */
 
-      if (uart_devs[i]->dev.isconsole)
+      if (g_uart_devs[i]->dev.isconsole)
         {
           continue;
         }
@@ -2802,7 +2802,7 @@ void up_serialinit(void)
       /* Register USARTs as devices in increasing order */
 
       devname[9] = '0' + minor++;
-      (void)uart_register(devname, &uart_devs[i]->dev);
+      (void)uart_register(devname, &g_uart_devs[i]->dev);
     }
 #endif /* HAVE UART */
 }
@@ -2896,7 +2896,7 @@ void stm32_serial_dma_poll(void)
 int up_putc(int ch)
 {
 #if CONSOLE_UART > 0
-  struct up_dev_s *priv = uart_devs[CONSOLE_UART - 1];
+  struct up_dev_s *priv = g_uart_devs[CONSOLE_UART - 1];
   uint16_t ie;
 
   up_disableusartint(priv, &ie);
diff --git a/arch/arm/src/stm32l4/stm32l4_serial.c b/arch/arm/src/stm32l4/stm32l4_serial.c
index 12b89956e6c..3db05181d28 100644
--- a/arch/arm/src/stm32l4/stm32l4_serial.c
+++ b/arch/arm/src/stm32l4/stm32l4_serial.c
@@ -742,7 +742,7 @@ static struct stm32l4_serial_s g_uart5priv =
 
 /* This table lets us iterate over the configured USARTs */
 
-FAR static struct stm32l4_serial_s * const uart_devs[STM32L4_NUSART + STM32L4_NUART] =
+FAR static struct stm32l4_serial_s * const g_uart_devs[STM32L4_NUSART + STM32L4_NUART] =
 {
 #ifdef CONFIG_STM32L4_USART1_SERIALDRIVER
   [0] = &g_usart1priv,
@@ -1200,7 +1200,7 @@ void stm32l4serial_pm_setsuspend(bool suspend)
 
   for (n = 0; n < STM32L4_NUSART + STM32L4_NUART; n++)
     {
-      struct stm32l4_serial_s *priv = uart_devs[n];
+      struct stm32l4_serial_s *priv = g_uart_devs[n];
 
       if (!priv || !priv->initialized)
         {
@@ -2682,7 +2682,7 @@ static int stm32l4serial_pmprepare(FAR struct pm_callback_s *cb, int domain,
 
       for (n = 0; n < STM32L4_NUSART + STM32L4_NUART; n++)
         {
-          struct stm32l4_serial_s *priv = uart_devs[n];
+          struct stm32l4_serial_s *priv = g_uart_devs[n];
 
           if (!priv || !priv->initialized)
             {
@@ -2745,16 +2745,16 @@ void up_earlyserialinit(void)
 
   for (i = 0; i < STM32L4_NUSART + STM32L4_NUART; i++)
     {
-      if (uart_devs[i])
+      if (g_uart_devs[i])
         {
-          stm32l4serial_disableusartint(uart_devs[i], NULL);
+          stm32l4serial_disableusartint(g_uart_devs[i], NULL);
         }
     }
 
   /* Configure whichever one is the console */
 
 #if CONSOLE_UART > 0
-  stm32l4serial_setup(&uart_devs[CONSOLE_UART - 1]->dev);
+  stm32l4serial_setup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* HAVE UART */
 }
@@ -2790,21 +2790,21 @@ void up_serialinit(void)
   /* Register the console */
 
 #if CONSOLE_UART > 0
-  (void)uart_register("/dev/console", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/console", &g_uart_devs[CONSOLE_UART - 1]->dev);
 
 #ifndef CONFIG_STM32L4_SERIAL_DISABLE_REORDERING
   /* If not disabled, register the console UART to ttyS0 and exclude
    * it from initializing it further down
    */
 
-  (void)uart_register("/dev/ttyS0", &uart_devs[CONSOLE_UART - 1]->dev);
+  (void)uart_register("/dev/ttyS0", &g_uart_devs[CONSOLE_UART - 1]->dev);
   minor = 1;
 #endif
 
 #ifdef SERIAL_HAVE_CONSOLE_DMA
   /* If we need to re-initialise the console to enable DMA do that here. */
 
-  stm32l4serial_dmasetup(&uart_devs[CONSOLE_UART - 1]->dev);
+  stm32l4serial_dmasetup(&g_uart_devs[CONSOLE_UART - 1]->dev);
 #endif
 #endif /* CONSOLE_UART > 0 */
 
@@ -2816,7 +2816,7 @@ void up_serialinit(void)
     {
       /* Don't create a device for non-configured ports. */
 
-      if (uart_devs[i] == 0)
+      if (g_uart_devs[i] == 0)
         {
           continue;
         }
@@ -2824,7 +2824,7 @@ void up_serialinit(void)
 #ifndef CONFIG_STM32L4_SERIAL_DISABLE_REORDERING
       /* Don't create a device for the console - we did that above */
 
-      if (uart_devs[i]->dev.isconsole)
+      if (g_uart_devs[i]->dev.isconsole)
         {
           continue;
         }
@@ -2833,7 +2833,7 @@ void up_serialinit(void)
       /* Register USARTs as devices in increasing order */
 
       devname[9] = '0' + minor++;
-      (void)uart_register(devname, &uart_devs[i]->dev);
+      (void)uart_register(devname, &g_uart_devs[i]->dev);
     }
 #endif /* HAVE UART */
 }
@@ -2906,7 +2906,7 @@ void stm32l4_serial_dma_poll(void)
 int up_putc(int ch)
 {
 #if CONSOLE_UART > 0
-  struct stm32l4_serial_s *priv = uart_devs[CONSOLE_UART - 1];
+  struct stm32l4_serial_s *priv = g_uart_devs[CONSOLE_UART - 1];
   uint16_t ie;
 
   stm32l4serial_disableusartint(priv, &ie);
diff --git a/configs/viewtool-stm32f107/README.txt b/configs/viewtool-stm32f107/README.txt
index 28cca5bdaac..c82b0e6685e 100644
--- a/configs/viewtool-stm32f107/README.txt
+++ b/configs/viewtool-stm32f107/README.txt
@@ -7,7 +7,7 @@ README
     - STM32F107VCT6, or
     - STM32F103VCT6
 
-  The board is vary modular with connectors for a variety of peripherals.
+  The board is very modular with connectors for a variety of peripherals.
   Features on the base board include:
 
     - User and Wake-Up Keys