Diff: targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_BEID/system_CMSDK_BEID.c

Revision:

624:83778a75d1b4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_BEID/system_CMSDK_BEID.c	Fri Sep 25 11:45:09 2015 +0100
@@ -0,0 +1,95 @@
+/**************************************************************************//**
+ * @file     system_CMSDK_BEID.c
+ * @brief    CMSIS Device System Source File for
+ *           CMSDK_M3 Device
+ * @version  V3.02
+ * @date     15. November 2013
+ *
+ * @note
+ *
+ ******************************************************************************/
+/* Copyright (c) 2011 - 2013 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - 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.
+   - Neither the name of ARM 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 COPYRIGHT HOLDERS AND 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 "CMSDK_BEID.h"
+
+/*----------------------------------------------------------------------------
+  Define clocks
+ *----------------------------------------------------------------------------*/
+#define __XTAL            (50000000UL)    /* Oscillator frequency             */
+
+#define __SYSTEM_CLOCK    (__XTAL / 2)
+
+
+/*----------------------------------------------------------------------------
+  Clock Variable definitions
+ *----------------------------------------------------------------------------*/
+uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
+
+
+/*----------------------------------------------------------------------------
+  Clock functions
+ *----------------------------------------------------------------------------*/
+/**
+ * Update SystemCoreClock variable
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Updates the SystemCoreClock with current core Clock
+ *         retrieved from cpu registers.
+ */
+void SystemCoreClockUpdate (void)
+{
+
+  SystemCoreClock = __SYSTEM_CLOCK;
+
+}
+
+/**
+ * Initialize the system
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Setup the microcontroller system.
+ *         Initialize the System.
+ */
+void SystemInit (void)
+{
+
+#ifdef UNALIGNED_SUPPORT_DISABLE
+  SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk;
+#endif
+
+  SystemCoreClock = __SYSTEM_CLOCK;
+
+    // Enable AHB and APB clock
+    CMSDK_SYSCON->AHBCLKCFG0SET = 0xF;  // GPIO
+    CMSDK_SYSCON->APBCLKCFG0SET = 0x37;	// UART0, UART1, TIMER0, TIMER1, DUAL TIMER
+}