diff --git a/os/hal/include/ext.h b/os/hal/include/ext.h
index 56e683019..37a7dcd15 100644
--- a/os/hal/include/ext.h
+++ b/os/hal/include/ext.h
@@ -36,7 +36,7 @@
 /*===========================================================================*/
 
 /**
- * @name    EXT channels modes
+ * @name    EXT channel modes
  * @{
  */
 #define EXT_CH_MODE_EDGES_MASK      3   /**< @brief Mask of edges field.    */
@@ -104,6 +104,27 @@ typedef struct EXTDriver EXTDriver;
  * @iclass
  */
 #define extChannelDisableI(extp, channel) ext_lld_channel_disable(extp, channel)
+
+/**
+ * @brief   Changes the operation mode of a channel.
+ * @note    This function attempts to write over the current configuration
+ *          structure that must have been not declared constant. This
+ *          violates the @p const qualifier in @p extStart() but it is
+ *          intentional. This function cannot be used if the configuration
+ *          structure is declared @p const.
+ *
+ * @param[in] extp      pointer to the @p EXTDriver object
+ * @param[in] channel   channel to be changed
+ * @param[in] extcp     new configuration for the channel
+ *
+ * @api
+ */
+#define extSetChannelMode(extp, channel, extcp) {                           \
+  chSysLock();                                                              \
+  extSetChannelModeI(extp, channel, extcp);                                 \
+  chSysUnlock();                                                            \
+}
+
 /** @} */
 
 /*===========================================================================*/
@@ -119,6 +140,9 @@ extern "C" {
   void extStop(EXTDriver *extp);
   void extChannelEnable(EXTDriver *extp, expchannel_t channel);
   void extChannelDisable(EXTDriver *extp, expchannel_t channel);
+  void extSetChannelModeI(EXTDriver *extp,
+                          expchannel_t channel,
+                          const EXTChannelConfig *extcp);
 #ifdef __cplusplus
 }
 #endif
diff --git a/os/hal/platforms/STM32/ext_lld.c b/os/hal/platforms/STM32/ext_lld.c
index 569262e75..4a3cd3c2e 100644
--- a/os/hal/platforms/STM32/ext_lld.c
+++ b/os/hal/platforms/STM32/ext_lld.c
@@ -430,7 +430,6 @@ void ext_lld_init(void) {
  */
 void ext_lld_start(EXTDriver *extp) {
   unsigned i;
-  uint32_t imr, emr, rtsr, ftsr;
 
   if (extp->state == EXT_STOP) {
     /* Clock activation.*/
@@ -489,37 +488,12 @@ void ext_lld_start(EXTDriver *extp) {
                      CORTEX_PRIORITY_MASK(STM32_EXT_EXTI18_IRQ_PRIORITY));
 #endif
   }
-  /* Configuration.*/
-  imr = emr = rtsr = ftsr = 0;
-  for (i = 0; i < EXT_MAX_CHANNELS; i++) {
-    if (extp->config->channels[i].mode & EXT_CH_MODE_AUTOSTART) {
-      if (extp->config->channels[i].cb != NULL)
-        imr |= (1 << i);
-      else
-        emr |= (1 << i);
-      if (extp->config->channels[i].mode & EXT_CH_MODE_RISING_EDGE)
-        rtsr |= (1 << i);
-      if (extp->config->channels[i].mode & EXT_CH_MODE_FALLING_EDGE)
-        ftsr |= (1 << i);
-    }
-  }
-#if defined(STM32L1XX_MD) || defined(STM32F2XX) || defined(STM32F4XX)
-  SYSCFG->EXTICR[0] = extp->config->exti[0];
-  SYSCFG->EXTICR[1] = extp->config->exti[1];
-  SYSCFG->EXTICR[2] = extp->config->exti[2];
-  SYSCFG->EXTICR[3] = extp->config->exti[3];
-#else /* STM32F1XX */
-  AFIO->EXTICR[0] = extp->config->exti[0];
-  AFIO->EXTICR[1] = extp->config->exti[1];
-  AFIO->EXTICR[2] = extp->config->exti[2];
-  AFIO->EXTICR[3] = extp->config->exti[3];
-#endif /* STM32F1XX */
-  EXTI->SWIER = 0;
-  EXTI->RTSR  = rtsr;
-  EXTI->FTSR  = ftsr;
-  EXTI->PR    = EXT_CHANNELS_MASK;
-  EXTI->EMR   = emr;
-  EXTI->IMR   = imr;
+  /* Configuration of automatic channels.*/
+  for (i = 0; i < EXT_MAX_CHANNELS; i++)
+    if (extp->config->channels[i].mode & EXT_CH_MODE_AUTOSTART)
+      ext_lld_channel_enable(extp, i);
+    else
+      ext_lld_channel_disable(extp, i);
 }
 
 /**
@@ -581,14 +555,40 @@ void ext_lld_stop(EXTDriver *extp) {
  */
 void ext_lld_channel_enable(EXTDriver *extp, expchannel_t channel) {
 
-  if (extp->config->channels[channel].cb != NULL)
-    EXTI->IMR |= (1 << channel);
-  else
-    EXTI->EMR |= (1 << channel);
+  /* Programming edge registers.*/
   if (extp->config->channels[channel].mode & EXT_CH_MODE_RISING_EDGE)
     EXTI->RTSR |= (1 << channel);
+  else
+    EXTI->RTSR &= ~(1 << channel);
   if (extp->config->channels[channel].mode & EXT_CH_MODE_FALLING_EDGE)
     EXTI->FTSR |= (1 << channel);
+  else
+    EXTI->FTSR &= ~(1 << channel);
+
+  /* Programming interrupt and event registers.*/
+  if (extp->config->channels[channel].cb != NULL) {
+    EXTI->IMR |= (1 << channel);
+    EXTI->EMR &= ~(1 << channel);
+  }
+  else {
+    EXTI->EMR |= (1 << channel);
+    EXTI->IMR &= ~(1 << channel);
+  }
+
+  /* Setting the associated GPIO for external channels.*/
+  if (channel < 16) {
+    uint32_t n = channel & 3;
+    uint32_t mask = 0xF << (channel >> 2);
+    uint32_t port = ((extp->config->channels[channel].mode &
+                      EXT_MODE_GPIO_MASK) >>
+                     EXT_MODE_GPIO_OFF) << (channel >> 2);
+
+#if defined(STM32L1XX_MD) || defined(STM32F2XX) || defined(STM32F4XX)
+  SYSCFG->EXTICR[n] = (SYSCFG->EXTICR[n] & mask) | port;
+#else /* STM32F1XX */
+  AFIO->EXTICR[n] = (AFIO->EXTICR[n] & mask) | port;
+#endif /* STM32F1XX */
+  }
 }
 
 /**
@@ -605,9 +605,7 @@ void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel) {
 
   EXTI->IMR  &= ~(1 << channel);
   EXTI->EMR  &= ~(1 << channel);
-  EXTI->RTSR &= ~(1 << channel);
-  EXTI->FTSR &= ~(1 << channel);
-  EXTI->PR    = (1 << channel);
+  EXTI->PR    =  (1 << channel);
 }
 
 #endif /* HAL_USE_EXT */
diff --git a/os/hal/platforms/STM32/ext_lld.h b/os/hal/platforms/STM32/ext_lld.h
index 6ef14427b..60a77fc41 100644
--- a/os/hal/platforms/STM32/ext_lld.h
+++ b/os/hal/platforms/STM32/ext_lld.h
@@ -46,31 +46,20 @@
 #define EXT_CHANNELS_MASK   ((1 << EXT_MAX_CHANNELS) - 1)
 
 /**
- * @name    EXTI configuration helpers
+ * @name    STM32-specific EXT channel modes
  * @{
  */
-/**
- * @brief   EXTI-GPIO association macro.
- * @details Helper macro to associate a GPIO to each of the Mx EXTI inputs.
- */
-#define EXT_MODE_EXTI(m0, m1, m2, m3, m4, m5, m6, m7,                       \
-                      m8, m9, m10, m11, m12, m13, m14, m15)                 \
-  {                                                                         \
-    ((m0) << 0)  | ((m1) << 4)  | ((m2) << 8)  | ((m3) << 12),              \
-    ((m4) << 0)  | ((m5) << 4)  | ((m6) << 8)  | ((m7) << 12),              \
-    ((m8) << 0)  | ((m9) << 4)  | ((m10) << 8) | ((m11) << 12),             \
-    ((m12) << 0) | ((m13) << 4) | ((m14) << 8) | ((m15) << 12)              \
-  }
-
-#define EXT_MODE_GPIOA      0           /**< @brief GPIOA identifier.       */
-#define EXT_MODE_GPIOB      1           /**< @brief GPIOB identifier.       */
-#define EXT_MODE_GPIOC      2           /**< @brief GPIOC identifier.       */
-#define EXT_MODE_GPIOD      3           /**< @brief GPIOD identifier.       */
-#define EXT_MODE_GPIOE      4           /**< @brief GPIOE identifier.       */
-#define EXT_MODE_GPIOF      5           /**< @brief GPIOF identifier.       */
-#define EXT_MODE_GPIOG      6           /**< @brief GPIOG identifier.       */
-#define EXT_MODE_GPIOH      7           /**< @brief GPIOH identifier.       */
-#define EXT_MODE_GPIOI      8           /**< @brief GPIOI identifier.       */
+#define EXT_MODE_GPIO_MASK  0xF0        /**< @bried Port field mask.        */
+#define EXT_MODE_GPIO_OFF   4           /**< @bried Port field offset.        */
+#define EXT_MODE_GPIOA      0x00        /**< @brief GPIOA identifier.       */
+#define EXT_MODE_GPIOB      0x10        /**< @brief GPIOB identifier.       */
+#define EXT_MODE_GPIOC      0x20        /**< @brief GPIOC identifier.       */
+#define EXT_MODE_GPIOD      0x30        /**< @brief GPIOD identifier.       */
+#define EXT_MODE_GPIOE      0x40        /**< @brief GPIOE identifier.       */
+#define EXT_MODE_GPIOF      0x50        /**< @brief GPIOF identifier.       */
+#define EXT_MODE_GPIOG      0x60        /**< @brief GPIOG identifier.       */
+#define EXT_MODE_GPIOH      0x70        /**< @brief GPIOH identifier.       */
+#define EXT_MODE_GPIOI      0x80        /**< @brief GPIOI identifier.       */
 /** @} */
 
 /*===========================================================================*/
@@ -228,10 +217,6 @@ typedef struct {
    */
   EXTChannelConfig      channels[EXT_MAX_CHANNELS];
   /* End of the mandatory fields.*/
-  /**
-   * @brief Initialization values for EXTICRx registers.
-   */
-  uint16_t              exti[4];
 } EXTConfig;
 
 /**
diff --git a/os/hal/src/ext.c b/os/hal/src/ext.c
index e89962dea..bd175d483 100644
--- a/os/hal/src/ext.c
+++ b/os/hal/src/ext.c
@@ -120,6 +120,7 @@ void extStop(EXTDriver *extp) {
 
 /**
  * @brief   Enables an EXT channel.
+ * @pre     The channel must not be in @p EXT_CH_MODE_DISABLED mode.
  *
  * @param[in] extp      pointer to the @p EXTDriver object
  * @param[in] channel   channel to be enabled
@@ -128,13 +129,13 @@ void extStop(EXTDriver *extp) {
  */
 void extChannelEnable(EXTDriver *extp, expchannel_t channel) {
 
-  chDbgCheck((extp != NULL) &&
-             (channel < EXT_MAX_CHANNELS) &&
-             (extp->config->channels[channel].mode != EXT_CH_MODE_DISABLED),
+  chDbgCheck((extp != NULL) && (channel < EXT_MAX_CHANNELS),
              "extChannelEnable");
 
   chSysLock();
-  chDbgAssert(extp->state == EXT_ACTIVE,
+  chDbgAssert((extp->state == EXT_ACTIVE) &&
+              ((extp->config->channels[channel].mode &
+                EXT_CH_MODE_EDGES_MASK) != EXT_CH_MODE_DISABLED),
               "extChannelEnable(), #1", "invalid state");
   extChannelEnableI(extp, channel);
   chSysUnlock();
@@ -142,6 +143,7 @@ void extChannelEnable(EXTDriver *extp, expchannel_t channel) {
 
 /**
  * @brief   Disables an EXT channel.
+ * @pre     The channel must not be in @p EXT_CH_MODE_DISABLED mode.
  *
  * @param[in] extp      pointer to the @p EXTDriver object
  * @param[in] channel   channel to be disabled
@@ -150,18 +152,59 @@ void extChannelEnable(EXTDriver *extp, expchannel_t channel) {
  */
 void extChannelDisable(EXTDriver *extp, expchannel_t channel) {
 
-  chDbgCheck((extp != NULL) &&
-             (channel < EXT_MAX_CHANNELS) &&
-             (extp->config->channels[channel].mode != EXT_CH_MODE_DISABLED),
+  chDbgCheck((extp != NULL) && (channel < EXT_MAX_CHANNELS),
              "extChannelDisable");
 
   chSysLock();
-  chDbgAssert(extp->state == EXT_ACTIVE,
+  chDbgAssert((extp->state == EXT_ACTIVE) &&
+              ((extp->config->channels[channel].mode &
+                EXT_CH_MODE_EDGES_MASK) != EXT_CH_MODE_DISABLED),
               "extChannelDisable(), #1", "invalid state");
   extChannelDisableI(extp, channel);
   chSysUnlock();
 }
 
+/**
+ * @brief   Changes the operation mode of a channel.
+ * @note    This function attempts to write over the current configuration
+ *          structure that must have been not declared constant. This
+ *          violates the @p const qualifier in @p extStart() but it is
+ *          intentional.
+ * @note    This function cannot be used if the configuration structure is
+ *          declared @p const.
+ * @note    The effect of this function on constant configuration structures
+ *          is not defined.
+ *
+ * @param[in] extp      pointer to the @p EXTDriver object
+ * @param[in] channel   channel to be changed
+ * @param[in] extcp     new configuration for the channel
+ *
+ * @iclass
+ */
+void extSetChannelModeI(EXTDriver *extp,
+                        expchannel_t channel,
+                        const EXTChannelConfig *extcp) {
+  EXTChannelConfig *oldcp;
+
+  chDbgCheck((extp != NULL) && (channel < EXT_MAX_CHANNELS) &&
+             (extcp != NULL), "extSetChannelModeI");
+
+  /* Note that here the access is enforced as non-const, known access
+     violation.*/
+  oldcp = (EXTChannelConfig *)&extp->config->channels[channel];
+
+  chSysLock();
+
+  chDbgAssert(extp->state == EXT_ACTIVE,
+              "extSetChannelModeI(), #1", "invalid state");
+
+  /* Overwiting the old channels configuration then the channel is reconfigured
+     by the low level driver.*/
+  *oldcp = *extcp;
+  ext_lld_channel_enable(extp, channel);
+  chSysUnlock();
+}
+
 #endif /* HAL_USE_EXT */
 
 /** @} */
diff --git a/readme.txt b/readme.txt
index cbe7d6e81..23b72f607 100644
--- a/readme.txt
+++ b/readme.txt
@@ -113,6 +113,9 @@
   3484947)(backported to 2.4.1).
 - FIX: Fixed various minor documentation errors (bug 3484942)(backported
   to 2.4.1).
+- NEW: EXT driver improved, now it is possible to reprogram channels at
+  runtime without necessarily specifying a new configuration.
+  TODO: Update AT91SAM7 EXT driver.
 - NEW: Integrated FatFS 0.9, now the FatFS integration files are centralized
   under ./os/various/fatfs_bindings and shared among all demos. The FatFS
   file ffconf.h is now application-specific like all the other configuration
diff --git a/testhal/STM32F1xx/EXT/main.c b/testhal/STM32F1xx/EXT/main.c
index e9e2e9090..0c71217ae 100644
--- a/testhal/STM32F1xx/EXT/main.c
+++ b/testhal/STM32F1xx/EXT/main.c
@@ -51,39 +51,23 @@ static void extcb2(EXTDriver *extp, expchannel_t channel) {
 
 static const EXTConfig extcfg = {
   {
-   {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART, extcb1},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART, extcb2},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-  },
-  EXT_MODE_EXTI(EXT_MODE_GPIOA,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                0,
-                EXT_MODE_GPIOC,
-                0,
-                0,
-                0)
+    {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOA, extcb1},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOC, extcb2},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL}
+  }
 };
 
 /*
diff --git a/testhal/STM32F4xx/EXT/main.c b/testhal/STM32F4xx/EXT/main.c
index e79618715..2a6d7901c 100644
--- a/testhal/STM32F4xx/EXT/main.c
+++ b/testhal/STM32F4xx/EXT/main.c
@@ -46,33 +46,30 @@ static void extcb1(EXTDriver *extp, expchannel_t channel) {
 
 static const EXTConfig extcfg = {
   {
-   {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART, extcb1},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL}
-  },
-  EXT_MODE_EXTI(EXT_MODE_GPIOA, /* Button.*/
-                0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0, 0, 0, 0)
+    {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOA, extcb1},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL}
+  }
 };
 
 /*
diff --git a/testhal/STM32L1xx/EXT/main.c b/testhal/STM32L1xx/EXT/main.c
index 84d57e682..88721db86 100644
--- a/testhal/STM32L1xx/EXT/main.c
+++ b/testhal/STM32L1xx/EXT/main.c
@@ -44,33 +44,30 @@ static void extcb1(EXTDriver *extp, expchannel_t channel) {
 
 static const EXTConfig extcfg = {
   {
-   {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART, extcb1},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL},
-   {EXT_CH_MODE_DISABLED, NULL}
-  },
-  EXT_MODE_EXTI(EXT_MODE_GPIOA, /* Button.*/
-                0, 0, 0, 0, 0, 0, 0, 0,
-                0, 0, 0, 0, 0, 0, 0)
+    {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOA, extcb1},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL}
+  }
 };
 
 /*