STM32 LPUART1 support added.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8539 35acf78f-673a-0410-8e92-d51de3d6d3f4

16 files changed, 258 insertions, 19 deletions

diff --git a/os/hal/ports/STM32/LLD/USARTv1/serial_lld.h b/os/hal/ports/STM32/LLD/USARTv1/serial_lld.h
index 6923b3b70..420aac708 100644
--- a/os/hal/ports/STM32/LLD/USARTv1/serial_lld.h
+++ b/os/hal/ports/STM32/LLD/USARTv1/serial_lld.h
@@ -42,7 +42,7 @@
 /**

  * @brief   USART1 driver enable switch.

  * @details If set to @p TRUE the support for USART1 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART1) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART1             FALSE

@@ -51,7 +51,7 @@
 /**

  * @brief   USART2 driver enable switch.

  * @details If set to @p TRUE the support for USART2 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART2) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART2             FALSE

@@ -60,7 +60,7 @@
 /**

  * @brief   USART3 driver enable switch.

  * @details If set to @p TRUE the support for USART3 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART3) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART3             FALSE

@@ -69,7 +69,7 @@
 /**

  * @brief   UART4 driver enable switch.

  * @details If set to @p TRUE the support for UART4 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART4) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART4              FALSE

@@ -78,7 +78,7 @@
 /**

  * @brief   UART5 driver enable switch.

  * @details If set to @p TRUE the support for UART5 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART5) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART5              FALSE

@@ -87,7 +87,7 @@
 /**

  * @brief   USART6 driver enable switch.

  * @details If set to @p TRUE the support for USART6 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART6) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART6             FALSE

@@ -96,7 +96,7 @@
 /**

  * @brief   UART7 driver enable switch.

  * @details If set to @p TRUE the support for UART7 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART7) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART7              FALSE

@@ -105,7 +105,7 @@
 /**

  * @brief   UART8 driver enable switch.

  * @details If set to @p TRUE the support for UART8 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART8) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART8              FALSE

diff --git a/os/hal/ports/STM32/LLD/USARTv2/serial_lld.c b/os/hal/ports/STM32/LLD/USARTv2/serial_lld.c
index 683df0481..88e05e26e 100644
--- a/os/hal/ports/STM32/LLD/USARTv2/serial_lld.c
+++ b/os/hal/ports/STM32/LLD/USARTv2/serial_lld.c
@@ -98,6 +98,11 @@ SerialDriver SD7;
 SerialDriver SD8;

 #endif

 

+/** @brief LPUART1 serial driver identifier.*/

+#if STM32_SERIAL_USE_LPUART1 || defined(__DOXYGEN__)

+SerialDriver LPSD1;

+#endif

+

 /*===========================================================================*/

 /* Driver local variables and types.                                         */

 /*===========================================================================*/

@@ -126,6 +131,13 @@ static void usart_init(SerialDriver *sdp, const SerialConfig *config) {
   USART_TypeDef *u = sdp->usart;

 

   /* Baud rate setting.*/

+#if STM32_SERIAL_USE_LPUART1

+  if ( sdp == &LPSD1 )

+  {

+      u->BRR = (uint32_t)( ( (uint64_t)sdp->clock * 256 ) / config->speed);

+  }

+  else

+#endif

   u->BRR = (uint32_t)(sdp->clock / config->speed);

 

   /* Note that some bits are enforced.*/

@@ -292,6 +304,14 @@ static void notify8(io_queue_t *qp) {
 }

 #endif

 

+#if STM32_SERIAL_USE_LPUART1 || defined(__DOXYGEN__)

+static void notifylp1(io_queue_t *qp) {

+

+  (void)qp;

+  LPUART1->CR1 |= USART_CR1_TXEIE;

+}

+#endif

+

 /*===========================================================================*/

 /* Driver interrupt handlers.                                                */

 /*===========================================================================*/

@@ -482,6 +502,25 @@ OSAL_IRQ_HANDLER(STM32_UART8_HANDLER) {
 }

 #endif

 

+#if STM32_SERIAL_USE_LPUART1 || defined(__DOXYGEN__)

+#if !defined(STM32_LPUART1_HANDLER)

+#error "STM32_LPUART1_HANDLER not defined"

+#endif

+/**

+ * @brief   LPUART1 interrupt handler.

+ *

+ * @isr

+ */

+OSAL_IRQ_HANDLER(STM32_LPUART1_HANDLER) {

+

+  OSAL_IRQ_PROLOGUE();

+

+  serve_interrupt(&LPSD1);

+

+  OSAL_IRQ_EPILOGUE();

+}

+#endif

+

 /*===========================================================================*/

 /* Driver exported functions.                                                */

 /*===========================================================================*/

@@ -565,6 +604,15 @@ void sd_lld_init(void) {
 #endif

 #endif

 

+#if STM32_SERIAL_USE_LPUART1

+  sdObjectInit(&LPSD1, NULL, notifylp1);

+  LPSD1.usart = LPUART1;

+  LPSD1.clock = STM32_LPUART1CLK;

+#if defined(STM32_LPUART1_NUMBER)

+  nvicEnableVector(STM32_LPUART1_NUMBER, STM32_SERIAL_LPUART1_PRIORITY);

+#endif

+#endif

+

 #if STM32_SERIAL_USE_USART3 || STM32_SERIAL_USE_UART4  ||                   \

     STM32_SERIAL_USE_UART5  || STM32_SERIAL_USE_USART6 ||                   \

     STM32_SERIAL_USE_UART7  ||  STM32_SERIAL_USE_UART8 || defined(__DOXYGEN__)

@@ -630,6 +678,11 @@ void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
       rccEnableUART8(FALSE);

     }

 #endif

+#if STM32_SERIAL_USE_LPUART1

+    if (&LPSD1 == sdp) {

+      rccEnableLPUART1(FALSE);

+    }

+#endif

   }

   usart_init(sdp, config);

 }

@@ -697,6 +750,12 @@ void sd_lld_stop(SerialDriver *sdp) {
       return;

     }

 #endif

+#if STM32_SERIAL_USE_LPUART1

+    if (&LPSD1 == sdp) {

+      rccDisableLPUART1(FALSE);

+      return;

+    }

+#endif

   }

 }

 

diff --git a/os/hal/ports/STM32/LLD/USARTv2/serial_lld.h b/os/hal/ports/STM32/LLD/USARTv2/serial_lld.h
index ba3d9ed94..61e70f112 100644
--- a/os/hal/ports/STM32/LLD/USARTv2/serial_lld.h
+++ b/os/hal/ports/STM32/LLD/USARTv2/serial_lld.h
@@ -42,7 +42,7 @@
 /**

  * @brief   USART1 driver enable switch.

  * @details If set to @p TRUE the support for USART1 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART1) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART1             FALSE

@@ -51,7 +51,7 @@
 /**

  * @brief   USART2 driver enable switch.

  * @details If set to @p TRUE the support for USART2 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART2) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART2             FALSE

@@ -60,7 +60,7 @@
 /**

  * @brief   USART3 driver enable switch.

  * @details If set to @p TRUE the support for USART3 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART3) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART3             FALSE

@@ -69,7 +69,7 @@
 /**

  * @brief   UART4 driver enable switch.

  * @details If set to @p TRUE the support for UART4 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART4) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART4              FALSE

@@ -78,7 +78,7 @@
 /**

  * @brief   UART5 driver enable switch.

  * @details If set to @p TRUE the support for UART5 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART5) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART5              FALSE

@@ -87,7 +87,7 @@
 /**

  * @brief   USART6 driver enable switch.

  * @details If set to @p TRUE the support for USART6 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_USART6) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_USART6             FALSE

@@ -96,7 +96,7 @@
 /**

  * @brief   UART7 driver enable switch.

  * @details If set to @p TRUE the support for UART7 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART7) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART7              FALSE

@@ -105,13 +105,22 @@
 /**

  * @brief   UART8 driver enable switch.

  * @details If set to @p TRUE the support for UART8 is included.

- * @note    The default is @p TRUE.

+ * @note    The default is @p FALSE.

  */

 #if !defined(STM32_SERIAL_USE_UART8) || defined(__DOXYGEN__)

 #define STM32_SERIAL_USE_UART8              FALSE

 #endif

 

 /**

+ * @brief   LPUART1 driver enable switch.

+ * @details If set to @p TRUE the support for LPUART is included.

+ * @note    The default is @p FALSE.

+ */

+#if !defined(STM32_SERIAL_USE_LPUART1) || defined(__DOXYGEN__)

+#define STM32_SERIAL_USE_LPUART1            FALSE

+#endif

+

+/**

  * @brief   USART1 interrupt priority level setting.

  */

 #if !defined(STM32_SERIAL_USART1_PRIORITY) || defined(__DOXYGEN__)

@@ -174,6 +183,13 @@
 #if !defined(STM32_SERIAL_UART8_PRIORITY) || defined(__DOXYGEN__)

 #define STM32_SERIAL_UART8_PRIORITY         12

 #endif

+

+/**

+ * @brief   LPUART1 interrupt priority level setting.

+ */

+#if !defined(STM32_SERIAL_LPUART1_PRIORITY) || defined(__DOXYGEN__)

+#define STM32_SERIAL_LPUART1_PRIORITY       12

+#endif

 /** @} */

 

 /*===========================================================================*/

@@ -212,10 +228,15 @@
 #error "UART8 not present in the selected device"

 #endif

 

+#if STM32_SERIAL_USE_LPUART1 && !STM32_HAS_LPUART1

+#error "LPUART1 not present in the selected device"

+#endif

+

 #if !STM32_SERIAL_USE_USART1 && !STM32_SERIAL_USE_USART2 &&                 \

     !STM32_SERIAL_USE_USART3 && !STM32_SERIAL_USE_UART4  &&                 \

     !STM32_SERIAL_USE_UART5  && !STM32_SERIAL_USE_USART6 &&                 \

-    !STM32_SERIAL_USE_UART7  && !STM32_SERIAL_USE_UART8

+    !STM32_SERIAL_USE_UART7  && !STM32_SERIAL_USE_UART8  &&                 \

+    !STM32_SERIAL_USE_LPUART1

 #error "SERIAL driver activated but no USART/UART peripheral assigned"

 #endif

 

@@ -259,6 +280,11 @@
 #error "Invalid IRQ priority assigned to UART8"

 #endif

 

+#if STM32_SERIAL_USE_LPUART1 &&                                               \

+    !OSAL_IRQ_IS_VALID_PRIORITY(STM32_SERIAL_LPUART1_PRIORITY)

+#error "Invalid IRQ priority assigned to LPUART1"

+#endif

+

 /*===========================================================================*/

 /* Driver data structures and types.                                         */

 /*===========================================================================*/

@@ -352,6 +378,9 @@ extern SerialDriver SD7;
 #if STM32_SERIAL_USE_UART8 && !defined(__DOXYGEN__)

 extern SerialDriver SD8;

 #endif

+#if STM32_SERIAL_USE_LPUART1 && !defined(__DOXYGEN__)

+extern SerialDriver LPSD1;

+#endif

 

 #ifdef __cplusplus

 extern "C" {

diff --git a/os/hal/ports/STM32/STM32F0xx/stm32_registry.h b/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
index 9ed7d014e..c8baca553 100644
--- a/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
@@ -241,6 +241,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -490,6 +491,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #if defined(STM32F072xB) || defined(STM32F078xx)

@@ -703,6 +705,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -901,6 +904,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -1102,6 +1106,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1375,6 +1380,7 @@
 

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 #else

 #define STM32_HAS_USART3                    FALSE

 #define STM32_HAS_UART4                     FALSE

@@ -1382,6 +1388,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 #endif

 

 /* USB attributes.*/

@@ -1619,6 +1626,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1983,6 +1991,8 @@
                                              STM32_DMA_STREAM_ID_MSK(2, 5))

 #define STM32_UART8_TX_DMA_CHN              0x0F0FF0FF

 

+#define STM32_HAS_LPUART1                   FALSE

+

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

 #define STM32_HAS_OTG1                      FALSE

diff --git a/os/hal/ports/STM32/STM32F1xx/stm32_registry.h b/os/hal/ports/STM32/STM32F1xx/stm32_registry.h
index 0e8cb6663..779757d20 100644
--- a/os/hal/ports/STM32/STM32F1xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F1xx/stm32_registry.h
@@ -233,6 +233,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -401,6 +402,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -582,6 +584,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -822,6 +825,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1059,6 +1063,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1278,6 +1283,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

diff --git a/os/hal/ports/STM32/STM32F37x/stm32_registry.h b/os/hal/ports/STM32/STM32F37x/stm32_registry.h
index b2a4dfafe..733c50852 100644
--- a/os/hal/ports/STM32/STM32F37x/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F37x/stm32_registry.h
@@ -253,6 +253,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -496,6 +497,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

diff --git a/os/hal/ports/STM32/STM32F3xx/stm32_registry.h b/os/hal/ports/STM32/STM32F3xx/stm32_registry.h
index 2bb7d74ff..9a6e2985c 100644
--- a/os/hal/ports/STM32/STM32F3xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F3xx/stm32_registry.h
@@ -247,6 +247,9 @@
 #define STM32_HAS_UART5                     TRUE

 

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -449,6 +452,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -647,6 +653,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -845,6 +854,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1068,6 +1080,9 @@
 #define STM32_HAS_UART5                     TRUE

 

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1268,6 +1283,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -1464,6 +1482,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -1686,6 +1707,9 @@
 #define STM32_HAS_UART5                     TRUE

 

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -1885,6 +1909,9 @@
 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

diff --git a/os/hal/ports/STM32/STM32F4xx/stm32_registry.h b/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
index c5b6a2e0b..146f26e4f 100644
--- a/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
@@ -386,6 +386,8 @@
 #define STM32_UART8_TX_DMA_MSK              STM32_DMA_STREAM_ID_MSK(1, 0)

 #define STM32_UART8_TX_DMA_CHN              0x00000005

 

+#define STM32_HAS_LPUART1                   FALSE

+

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

 #define STM32_HAS_OTG1                      TRUE

@@ -721,6 +723,7 @@
 

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -1011,6 +1014,7 @@
 

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

@@ -1292,6 +1296,7 @@
 

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

diff --git a/os/hal/ports/STM32/STM32F7xx/stm32_registry.h b/os/hal/ports/STM32/STM32F7xx/stm32_registry.h
index 782d8c9b9..5f6c02e6a 100644
--- a/os/hal/ports/STM32/STM32F7xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F7xx/stm32_registry.h
@@ -450,6 +450,8 @@
 #define STM32_UART8_TX_DMA_MSK              STM32_DMA_STREAM_ID_MSK(1, 0)

 #define STM32_UART8_TX_DMA_CHN              0x00000005

 

+#define STM32_HAS_LPUART1                   FALSE

+

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

 

diff --git a/os/hal/ports/STM32/STM32L0xx/stm32_rcc.h b/os/hal/ports/STM32/STM32L0xx/stm32_rcc.h
index 892cd1c9b..44981343d 100644
--- a/os/hal/ports/STM32/STM32L0xx/stm32_rcc.h
+++ b/os/hal/ports/STM32/STM32L0xx/stm32_rcc.h
@@ -584,6 +584,31 @@
  * @api

  */

 #define rccResetUSART3() rccResetAPB1(RCC_APB1RSTR_USART3RST)

+

+/**

+ * @brief   Enables the LPUART1 peripheral clock.

+ *

+ * @param[in] lp        low power enable flag

+ *

+ * @api

+ */

+#define rccEnableLPUART1(lp) rccEnableAPB1(RCC_APB1ENR_LPUART1EN, lp)

+

+/**

+ * @brief   Disables the LPUART1 peripheral clock.

+ *

+ * @param[in] lp        low power enable flag

+ *

+ * @api

+ */

+#define rccDisableLPUART1(lp) rccDisableAPB1(RCC_APB1ENR_LPUART1EN, lp)

+

+/**

+ * @brief   Resets the USART1 peripheral.

+ *

+ * @api

+ */

+#define rccResetLPUART1() rccResetAPB1(RCC_APB1RSTR_LPUART1RST)

 /** @} */

 

 /**

diff --git a/os/hal/ports/STM32/STM32L0xx/stm32_registry.h b/os/hal/ports/STM32/STM32L0xx/stm32_registry.h
index 4a1ad5acb..a92a5ffa4 100644
--- a/os/hal/ports/STM32/STM32L0xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32L0xx/stm32_registry.h
@@ -249,6 +249,10 @@
                                              STM32_DMA_STREAM_ID_MSK(1, 7))

 #define STM32_USART2_TX_DMA_CHN             0x04004000

 

+#define STM32_HAS_LPUART1                   TRUE

+#define STM32_LPUART1_HANDLER               VectorB4

+#define STM32_LPUART1_NUMBER                29

+

 #define STM32_HAS_USART3                    FALSE

 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

@@ -491,10 +495,16 @@
                                              STM32_DMA_STREAM_ID_MSK(1, 7))

 #define STM32_USART2_TX_DMA_CHN             0x04004000

 

+#define STM32_HAS_LPUART1                   TRUE

+#define STM32_LPUART1_HANDLER               VectorB4

+#define STM32_LPUART1_NUMBER                29

+

 #define STM32_HAS_USART3                    FALSE

 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

@@ -739,10 +749,16 @@
                                              STM32_DMA_STREAM_ID_MSK(1, 7))

 #define STM32_USART2_TX_DMA_CHN             0x04004000

 

+#define STM32_HAS_LPUART1                   TRUE

+#define STM32_LPUART1_HANDLER               VectorB4

+#define STM32_LPUART1_NUMBER                29

+

 #define STM32_HAS_USART3                    FALSE

 #define STM32_HAS_UART4                     FALSE

 #define STM32_HAS_UART5                     FALSE

 #define STM32_HAS_USART6                    FALSE

+#define STM32_HAS_UART7                     FALSE

+#define STM32_HAS_UART8                     FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

diff --git a/os/hal/ports/STM32/STM32L1xx/stm32_registry.h b/os/hal/ports/STM32/STM32L1xx/stm32_registry.h
index ff369eb6b..654dfa78a 100644
--- a/os/hal/ports/STM32/STM32L1xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32L1xx/stm32_registry.h
@@ -313,6 +313,7 @@
 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

+#define STM32_HAS_LPUART1                   FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       TRUE

diff --git a/os/hal/ports/STM32/STM32L4xx/hal_lld.c b/os/hal/ports/STM32/STM32L4xx/hal_lld.c
index 30aa83ad7..b4298d3ae 100644
--- a/os/hal/ports/STM32/STM32L4xx/hal_lld.c
+++ b/os/hal/ports/STM32/STM32L4xx/hal_lld.c
@@ -243,7 +243,7 @@ void stm32_clock_init(void) {
                      STM32_CLK48SEL  | STM32_LPTIM2SEL | STM32_LPTIM1SEL |

                      STM32_I2C3SEL   | STM32_I2C2SEL   | STM32_I2C1SEL   |

                      STM32_UART5SEL  | STM32_UART4SEL  | STM32_USART3SEL |

-                     STM32_USART2SEL | STM32_USART1SEL;

+                     STM32_USART2SEL | STM32_USART1SEL | STM32_LPUART1SEL;

 #if STM32_SAI2SEL != STM32_SAI2SEL_OFF

     ccipr |= STM32_SAI2SEL;

 #endif

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)

diff --git a/os/hal/ports/STM32/STM32L4xx/stm32_rcc.h b/os/hal/ports/STM32/STM32L4xx/stm32_rcc.h
index 434ddde16..c45341540 100644
--- a/os/hal/ports/STM32/STM32L4xx/stm32_rcc.h
+++ b/os/hal/ports/STM32/STM32L4xx/stm32_rcc.h
@@ -1064,6 +1064,38 @@
  * @api

  */

 #define rccDisableUART5(lp) rccDisableAPB1R1(RCC_APB1ENR1_UART5EN, lp)

+

+/**

+ * @brief   Resets the UART5 peripheral.

+ *

+ * @api

+ */

+#define rccResetUART5() rccResetAPB1R1(RCC_APB1RSTR1_UART5RST)

+

+/**

+ * @brief   Enables the LPUART1 peripheral clock.

+ *

+ * @param[in] lp        low power enable flag

+ *

+ * @api

+ */

+#define rccEnableLPUART1(lp) rccEnableAPB1R2(RCC_APB1ENR2_LPUART1EN, lp)

+

+/**

+ * @brief   Disables the LPUART1 peripheral clock.

+ *

+ * @param[in] lp        low power enable flag

+ *

+ * @api

+ */

+#define rccDisableLPUART1(lp) rccDisableAPB1R2(RCC_APB1ENR2_LPUART1EN, lp)

+

+/**

+ * @brief   Resets the USART1 peripheral.

+ *

+ * @api

+ */

+#define rccResetLPUART1() rccResetAPB1R2(RCC_APB1RSTR2_LPUART1RST)

 /** @} */

 

 /*===========================================================================*/

diff --git a/os/hal/ports/STM32/STM32L4xx/stm32_registry.h b/os/hal/ports/STM32/STM32L4xx/stm32_registry.h
index 640753f3b..dea76f8e2 100644
--- a/os/hal/ports/STM32/STM32L4xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32L4xx/stm32_registry.h
@@ -370,13 +370,16 @@
 #define STM32_UART5_TX_DMA_MSK              STM32_DMA_STREAM_ID_MSK(2, 1)

 #define STM32_UART5_TX_DMA_CHN              0x00000002

 

+#define STM32_HAS_LPUART1                   TRUE

+#define STM32_LPUART1_HANDLER               Vector158

+#define STM32_LPUART1_NUMBER                70

+

 #define STM32_HAS_USART6                    FALSE

 #define STM32_HAS_UART7                     FALSE

 #define STM32_HAS_UART8                     FALSE

 

 /* USB attributes.*/

 #define STM32_HAS_USB                       FALSE

-

 #define STM32_HAS_OTG1                      TRUE

 #define STM32_OTG1_HANDLER                  Vector14C

 #define STM32_OTG1_NUMBER                   67