1 files changed, 22 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/STM32L4xx/hal_lld.h b/os/hal/ports/STM32/STM32L4xx/hal_lld.h
index ec107d911..2827f2fa2 100644
--- a/os/hal/ports/STM32/STM32L4xx/hal_lld.h
+++ b/os/hal/ports/STM32/STM32L4xx/hal_lld.h
@@ -645,6 +645,13 @@
 #endif
 
 /**
+ * @brief   LPUART1 clock source.
+ */
+#if !defined(STM32_LPUART1SEL) || defined(__DOXYGEN__)
+#define STM32_LPUART1SEL                    STM32_LPUART1SEL_SYSCLK
+#endif
+
+/**
  * @brief   I2C1 clock source.
  */
 #if !defined(STM32_I2C1SEL) || defined(__DOXYGEN__)
@@ -1833,6 +1840,21 @@
 #endif
 
 /**
+ * @brief   LPUART1 clock frequency.
+ */
+#if (STM32_LPUART1SEL == STM32_LPUART1SEL_PCLK1) || defined(__DOXYGEN)
+#define STM32_LPUART1CLK            STM32_PCLK1
+#elif STM32_LPUART1SEL == STM32_LPUART1SEL_SYSCLK
+#define STM32_LPUART1CLK            STM32_SYSCLK
+#elif STM32_LPUART1SEL == STM32_LPUART1SEL_HSI16
+#define STM32_LPUART1CLK            STM32_HSI16CLK
+#elif STM32_LPUART1SEL == STM32_LPUART1SEL_LSE
+#define STM32_LPUART1CLK            STM32_LSECLK
+#else
+#error "invalid source selected for LPUART1 clock"
+#endif
+
+/**
  * @brief   I2C1 clock frequency.
  */
 #if (STM32_I2C1SEL == STM32_I2C1SEL_PCLK1) || defined(__DOXYGEN)