git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@16365 27425a3e-05d8-49a3-a47f-9c15f0e5edd8

os/hal/ports/STM32/LLD/RCCv1/stm32_apb2.inc

@@ -27,7 +27,7 @@
 /*===========================================================================*/
 
 /**
- * @name    PPRE1 field bits definitions
+ * @name    PPRE2 field bits definitions
  * @{
  */
 #define STM32_PPRE2_MASK        (7U << RCC_CFGR_PPRE2_Pos)
@@ -51,8 +51,8 @@
 #endif
 
 /* Input checks.*/
-#if !defined(STM32_PCLK1_MAX)
-#error "STM32_PCLK1_MAX not defined in hal_lld.h"
+#if !defined(STM32_PCLK2_MAX)
+#error "STM32_PCLK2_MAX not defined in hal_lld.h"
 #endif
 
 #if !defined(STM32_HCLK)

os/hal/ports/STM32/LLD/RCCv1/stm32_apb3.inc

@@ -0,0 +1,111 @@
+/*
+    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    RCCv1/stm32_apb2.inc
+ * @brief   Shared APB3 clock handler.
+ *
+ * @addtogroup STM32_APB3_HANDLER
+ * @{
+ */
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/**
+ * @name    PPRE3 field bits definitions
+ * @{
+ */
+#define STM32_PPRE3_MASK        (7U << RCC_CFGR_PPRE3_Pos)
+#define STM32_PPRE3_FIELD(n)    ((n) << RCC_CFGR_PPRE3_Pos)
+#define STM32_PPRE3_DIV1        STM32_PPRE3_FIELD(0U)
+#define STM32_PPRE3_DIV2        STM32_PPRE3_FIELD(4U)
+#define STM32_PPRE3_DIV4        STM32_PPRE3_FIELD(5U)
+#define STM32_PPRE3_DIV8        STM32_PPRE3_FIELD(6U)
+#define STM32_PPRE3_DIV16       STM32_PPRE3_FIELD(7U)
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/* Registry checks for robustness.*/
+
+/* Checks on configurations.*/
+#if !defined(STM32_PPRE3)
+#error "STM32_PPRE3 not defined in mcuconf.h"
+#endif
+
+/* Input checks.*/
+#if !defined(STM32_PCLK3_MAX)
+#error "STM32_PCLK3_MAX not defined in hal_lld.h"
+#endif
+
+#if !defined(STM32_HCLK)
+#error "STM32_HCLK not defined in hal_lld.h"
+#endif
+
+/**
+ * @brief   APB3 frequency.
+ */
+#if (STM32_PPRE3 == STM32_PPRE3_DIV1) || defined(__DOXYGEN__)
+#define STM32_PCLK3                 (STM32_HCLK / 1U)
+
+#elif STM32_PPRE3 == STM32_PPRE3_DIV2
+#define STM32_PCLK3                 (STM32_HCLK / 2U)
+
+#elif STM32_PPRE3 == STM32_PPRE3_DIV4
+#define STM32_PCLK3                 (STM32_HCLK / 4U)
+
+#elif STM32_PPRE3 == STM32_PPRE3_DIV8
+#define STM32_PCLK3                 (STM32_HCLK / 8U)
+
+#elif STM32_PPRE3 == STM32_PPRE3_DIV16
+#define STM32_PCLK3                 (STM32_HCLK / 16U)
+
+#else
+#error "invalid STM32_PPRE3 value specified"
+#endif
+
+/*
+ * APB3 frequency check.
+ */
+#if STM32_PCLK3 > STM32_PCLK3_MAX
+#error "STM32_PCLK3 exceeding maximum frequency (STM32_PCLK3_MAX)"
+#endif
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/** @} */