1 files changed, 121 insertions, 0 deletions

diff --git a/lib/chibios/os/hal/ports/STM32/LLD/USARTv2/stm32_usart3.inc b/lib/chibios/os/hal/ports/STM32/LLD/USARTv2/stm32_usart3.inc
new file mode 100644
index 000000000..ff5dbda86
--- /dev/null
+++ b/lib/chibios/os/hal/ports/STM32/LLD/USARTv2/stm32_usart3.inc
@@ -0,0 +1,121 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    USARTv2/stm32_usart3.inc
+ * @brief   Shared USART3 handler.
+ *
+ * @addtogroup STM32_USART3_HANDLER
+ * @{
+ */
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/* Registry checks for robustness.*/
+#if !defined(STM32_HAS_USART3)
+#error "STM32_HAS_USART3 not defined in registry"
+#endif
+
+#if STM32_HAS_USART3
+
+/* Priority settings checks.*/
+#if !defined(STM32_IRQ_USART3_PRIORITY)
+#error "STM32_IRQ_USART3_PRIORITY not defined in mcuconf.h"
+#endif
+
+#if !OSAL_IRQ_IS_VALID_PRIORITY(STM32_IRQ_USART3_PRIORITY)
+#error "Invalid IRQ priority assigned to STM32_IRQ_USART3_PRIORITY"
+#endif
+
+#endif /* STM32_HAS_USART3 */
+
+/* Other checks.*/
+#if (HAL_USE_SERIAL && STM32_SERIAL_USE_USART3) &&                          \
+    (HAL_USE_UART && STM32_UART_USE_USART3)
+#error "USART3 used by multiple drivers"
+#endif
+
+#if (HAL_USE_SERIAL && STM32_SERIAL_USE_USART3) ||                          \
+    (HAL_USE_UART && STM32_UART_USE_USART3)
+#define STM32_USART3_IS_USED        TRUE
+#else
+#define STM32_USART3_IS_USED        FALSE
+#endif
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+static inline void usart3_irq_init(void) {
+#if STM32_USART3_IS_USED
+  nvicEnableVector(STM32_USART3_NUMBER, STM32_IRQ_USART3_PRIORITY);
+#endif
+}
+
+static inline void usart3_irq_deinit(void) {
+#if STM32_USART3_IS_USED
+  nvicDisableVector(STM32_USART3_NUMBER);
+#endif
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+#if STM32_USART3_IS_USED || defined(__DOXYGEN__)
+/**
+ * @brief   USART3 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(STM32_USART3_HANDLER) {
+
+  OSAL_IRQ_PROLOGUE();
+
+#if HAL_USE_SERIAL
+#if STM32_SERIAL_USE_USART3
+  sd_lld_serve_interrupt(&SD3);
+#endif
+#endif
+#if HAL_USE_UART
+#if STM32_UART_USE_USART3
+  uart_lld_serve_interrupt(&UARTD3);
+#endif
+#endif
+
+  OSAL_IRQ_EPILOGUE();
+}
+#endif
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/** @} */