diff --git a/demos/nil/NIL-STM32F051-DISCOVERY/nilconf.h b/demos/nil/NIL-STM32F051-DISCOVERY/nilconf.h
index 220ce8b37..54fb32ca4 100644
--- a/demos/nil/NIL-STM32F051-DISCOVERY/nilconf.h
+++ b/demos/nil/NIL-STM32F051-DISCOVERY/nilconf.h
@@ -51,6 +51,12 @@
  */
 /*===========================================================================*/
 
+/**
+ * @brief   System time counter resolution.
+ * @note    Allowed values are 16 or 32 bits.
+ */
+#define NIL_CFG_ST_RESOLUTION               32
+
 /**
  * @brief   System tick frequency.
  */
diff --git a/demos/nil/NIL-STM32F373-STM32373C_EVAL/nilconf.h b/demos/nil/NIL-STM32F373-STM32373C_EVAL/nilconf.h
index 220ce8b37..54fb32ca4 100644
--- a/demos/nil/NIL-STM32F373-STM32373C_EVAL/nilconf.h
+++ b/demos/nil/NIL-STM32F373-STM32373C_EVAL/nilconf.h
@@ -51,6 +51,12 @@
  */
 /*===========================================================================*/
 
+/**
+ * @brief   System time counter resolution.
+ * @note    Allowed values are 16 or 32 bits.
+ */
+#define NIL_CFG_ST_RESOLUTION               32
+
 /**
  * @brief   System tick frequency.
  */
diff --git a/demos/nil/NIL-STM32L152-DISCOVERY/nilconf.h b/demos/nil/NIL-STM32L152-DISCOVERY/nilconf.h
index c43879adb..eeec0899f 100644
--- a/demos/nil/NIL-STM32L152-DISCOVERY/nilconf.h
+++ b/demos/nil/NIL-STM32L152-DISCOVERY/nilconf.h
@@ -51,6 +51,12 @@
  */
 /*===========================================================================*/
 
+/**
+ * @brief   System time counter resolution.
+ * @note    Allowed values are 16 or 32 bits.
+ */
+#define NIL_CFG_ST_RESOLUTION               16
+
 /**
  * @brief   System tick frequency.
  */
@@ -64,7 +70,7 @@
  *          The value one is not valid, timeouts are rounded up to
  *          this value.
  */
-#define NIL_CFG_ST_TIMEDELTA                0
+#define NIL_CFG_ST_TIMEDELTA                2
 
 /** @} */
 
diff --git a/os/hal/ports/STM32/TIMv1/st_lld.c b/os/hal/ports/STM32/TIMv1/st_lld.c
index 507cad948..090b7a4fe 100644
--- a/os/hal/ports/STM32/TIMv1/st_lld.c
+++ b/os/hal/ports/STM32/TIMv1/st_lld.c
@@ -83,11 +83,11 @@
 #error "STM32_ST_USE_TIMER specifies an unsupported timer"
 #endif
 
-#if ST_CLOCK_SRC % OSAL_SYSTICK_FREQUENCY != 0
+#if ST_CLOCK_SRC % OSAL_ST_FREQUENCY != 0
 #error "the selected ST frequency is not obtainable because integer rounding"
 #endif
 
-#if (ST_CLOCK_SRC / OSAL_SYSTICK_FREQUENCY) - 1 > 0xFFFF
+#if (ST_CLOCK_SRC / OSAL_ST_FREQUENCY) - 1 > 0xFFFF
 #error "the selected ST frequency is not obtainable because TIM timer prescaler limits"
 #endif
 
@@ -95,11 +95,11 @@
 
 #if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC
 
-#if STM32_HCLK % OSAL_SYSTICK_FREQUENCY != 0
+#if STM32_HCLK % OSAL_ST_FREQUENCY != 0
 #error "the selected ST frequency is not obtainable because integer rounding"
 #endif
 
-#if (STM32_HCLK / OSAL_SYSTICK_FREQUENCY) - 1 > 0xFFFFFF
+#if (STM32_HCLK / OSAL_ST_FREQUENCY) - 1 > 0xFFFFFF
 #error "the selected ST frequency is not obtainable because SysTick timer counter limits"
 #endif
 
@@ -183,7 +183,7 @@ void st_lld_init(void) {
   ST_ENABLE_CLOCK();
 
   /* Initializing the counter in free running mode.*/
-  STM32_ST_TIM->PSC    = (ST_CLOCK_SRC / OSAL_SYSTICK_FREQUENCY) - 1;
+  STM32_ST_TIM->PSC    = (ST_CLOCK_SRC / OSAL_ST_FREQUENCY) - 1;
   STM32_ST_TIM->ARR    = ST_ARR_INIT;
   STM32_ST_TIM->CCMR1  = 0;
   STM32_ST_TIM->CCR[0] = 0;
@@ -199,7 +199,7 @@ void st_lld_init(void) {
 #if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC
   /* Periodic systick mode, the Cortex-Mx internal systick timer is used
      in this mode.*/
-  SysTick->LOAD = (STM32_HCLK / OSAL_SYSTICK_FREQUENCY) - 1;
+  SysTick->LOAD = (STM32_HCLK / OSAL_ST_FREQUENCY) - 1;
   SysTick->VAL = 0;
   SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
                   SysTick_CTRL_ENABLE_Msk |
diff --git a/os/nil/osal/osal.h b/os/nil/osal/osal.h
index 71d47894f..93483e6f0 100644
--- a/os/nil/osal/osal.h
+++ b/os/nil/osal/osal.h
@@ -85,6 +85,20 @@
 #define OSAL_ST_MODE_FREERUNNING            2
 /** @} */
 
+/**
+ * @name    Systick parameters.
+ * @{
+ */
+/**
+ * @brief   Size in bits of the @p systick_t type.
+ */
+#define OSAL_ST_RESOLUTION                  NIL_CFG_ST_RESOLUTION
+
+/**
+ * @brief   Required systick frequency or resolution.
+ */
+#define OSAL_ST_FREQUENCY                   NIL_CFG_ST_FREQUENCY
+
 /**
  * @brief   Systick mode required by the underlying OS.
  */
@@ -93,11 +107,7 @@
 #else
 #define OSAL_ST_MODE                        OSAL_ST_MODE_FREERUNNING
 #endif
-
-/**
- * @brief   Required systick frequency or resolution.
- */
-#define OSAL_SYSTICK_FREQUENCY              NIL_CFG_ST_FREQUENCY
+/** @} */
 
 /*===========================================================================*/
 /* Module pre-compile time settings.                                         */
@@ -117,6 +127,10 @@
 #error "invalid OSAL_ST_MODE setting in osal.h"
 #endif
 
+#if (OSAL_ST_RESOLUTION != 16) && (OSAL_ST_RESOLUTION != 32)
+#error "invalid OSAL_ST_RESOLUTION, must be 16 or 32"
+#endif
+
 /*===========================================================================*/
 /* Module data structures and types.                                         */
 /*===========================================================================*/
diff --git a/os/rt/osal/osal.h b/os/rt/osal/osal.h
index edaa34547..c9cb9b1ec 100644
--- a/os/rt/osal/osal.h
+++ b/os/rt/osal/osal.h
@@ -71,8 +71,8 @@
  * @name    Special time constants
  * @{
  */
-#define TIME_IMMEDIATE      ((systime_t)0)
-#define TIME_INFINITE       ((systime_t)-1)
+#define TIME_IMMEDIATE                      ((systime_t)0)
+#define TIME_INFINITE                       ((systime_t)-1)
 /** @} */
 #endif
 
@@ -86,11 +86,18 @@
 /** @} */
 
 /**
- * @name    Systick resolution.
+ * @name    Systick parameters.
  * @{
  */
+/**
+ * @brief   Size in bits of the @p systick_t type.
+ */
 #define OSAL_ST_RESOLUTION                  CH_CFG_ST_RESOLUTION
-/** @} */
+
+/**
+ * @brief   Required systick frequency or resolution.
+ */
+#define OSAL_ST_FREQUENCY                   CH_CFG_ST_FREQUENCY
 
 /**
  * @brief   Systick mode required by the underlying OS.
@@ -100,11 +107,7 @@
 #else
 #define OSAL_ST_MODE                        OSAL_ST_MODE_FREERUNNING
 #endif
-
-/**
- * @brief   Required systick frequency or resolution.
- */
-#define OSAL_SYSTICK_FREQUENCY              CH_CFG_ST_FREQUENCY
+/** @} */
 
 /*===========================================================================*/
 /* Module pre-compile time settings.                                         */