1 files changed, 36 insertions, 6 deletions
diff --git a/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h b/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h
index e9e1a83c8..f1564c47d 100644
--- a/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h
+++ b/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h
@@ -91,37 +91,67 @@
 
 #if STM32_ST_USE_TIMER == 2
 #if !STM32_HAS_TIM2
-#error "TIM2 not present"
+#error "TIM2 not present in the selected device"
+#endif
+#if defined(STM32_TIM2_IS_USED)
+#error "ST requires TIM2 but the timer is already used"
+#else
+#define STM32_TIM2_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM2
 
 #elif STM32_ST_USE_TIMER == 3
 #if !STM32_HAS_TIM3
-#error "TIM3 not present"
+#error "TIM3 not present in the selected device"
+#endif
+#if defined(STM32_TIM3_IS_USED)
+#error "ST requires TIM3 but the timer is already used"
+#else
+#define STM32_TIM3_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM3
 
 #elif STM32_ST_USE_TIMER == 4
 #if !STM32_HAS_TIM4
-#error "TIM4 not present"
+#error "TIM4 not present in the selected device"
+#endif
+#if defined(STM32_TIM4_IS_USED)
+#error "ST requires TIM4 but the timer is already used"
+#else
+#define STM32_TIM4_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM4
 
 #elif STM32_ST_USE_TIMER == 5
 #if !STM32_HAS_TIM5
-#error "TIM5 not present"
+#error "TIM5 not present in the selected device"
+#endif
+#if defined(STM32_TIM5_IS_USED)
+#error "ST requires TIM5 but the timer is already used"
+#else
+#define STM32_TIM5_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM5
 
 #elif STM32_ST_USE_TIMER == 21
 #if !STM32_HAS_TIM21
-#error "TIM21 not present"
+#error "TIM21 not present in the selected device"
+#endif
+#if defined(STM32_TIM21_IS_USED)
+#error "ST requires TIM21 but the timer is already used"
+#else
+#define STM32_TIM21_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM21
 
 #elif STM32_ST_USE_TIMER == 22
 #if !STM32_HAS_TIM22
-#error "TIM22 not present"
+#error "TIM22 not present in the selected device"
+#endif
+#if defined(STM32_TIM22_IS_USED)
+#error "ST requires TIM22 but the timer is already used"
+#else
+#define STM32_TIM22_IS_USED
 #endif
 #define STM32_ST_TIM                              STM32_TIM22