Diff: mbed-dev/targets/TARGET_ARM_SSG/TARGET_IOTSS/TARGET_IOTSS_BEID/device/system_CMSDK_BEID.c

Revision:

18:6a4db94011d3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev/targets/TARGET_ARM_SSG/TARGET_IOTSS/TARGET_IOTSS_BEID/device/system_CMSDK_BEID.c	Sun May 14 23:18:57 2017 +0000
@@ -0,0 +1,95 @@
+/* MPS2 CMSIS Library
+*
+* Copyright (c) 2006-2016 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:
+*
+* 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 the copyright holder 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.
+*******************************************************************************
+* @file     system_CMSDK_BEID.c
+* @brief    CMSIS Device System Source File for
+*           CMSDK_BEID Device
+*
+*******************************************************************************/
+
+
+#include "CMSDK_BEID.h"
+
+/*----------------------------------------------------------------------------
+  Define clocks
+ *----------------------------------------------------------------------------*/
+#define __XTAL            (48000000UL)    /* 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 = 0xF9B7;    // UART0, UART1, TIMER0, TIMER1, DUAL TIMER
+}