Diff: targets/TARGET_STM/TARGET_STM32F2/mbed_overrides.c

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F2/mbed_overrides.c	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,53 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2016, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "cmsis.h"
+#include "us_ticker_api.h"
+
+// This function is called after RAM initialization and before main.
+void mbed_sdk_init()
+{
+    // Update the SystemCoreClock variable.
+    SystemCoreClockUpdate();
+    // Need to restart HAL driver after the RAM is initialized
+    HAL_Init();
+}
+
+/**
+  * @brief This function provides accurate delay (in milliseconds) based
+  *        on variable incremented.
+  * @note This function is the modified version of the __weak version contained in
+  *       stm32f2xx_hal.c, using us_ticker
+  * @param Delay: specifies the delay time length, in milliseconds.
+  * @retval None
+  */
+void HAL_Delay(__IO uint32_t Delay)
+{
+    uint32_t start = us_ticker_read();
+    while ((us_ticker_read() - start) < (uint32_t)(Delay * 1000));
+}
+