1 /********************************************************************************************************************* 2 * @file system_XMC4700.h 3 * @brief Device specific initialization for the XMC4700-Series according to CMSIS 4 * @version V1.0 5 * @date 22 May 2015 6 * 7 * @cond 8 ********************************************************************************************************************* 9 * Copyright (c) 2015-2016, Infineon Technologies AG 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without modification,are permitted provided that the 13 * following conditions are met: 14 * 15 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 19 * disclaimer in the documentation and/or other materials provided with the distribution. 20 * 21 * Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote 22 * products derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 26 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with 33 * Infineon Technologies AG dave@infineon.com). 34 ********************************************************************************************************************* 35 * 36 **************************** Change history ********************************* 37 * V1.0, 22 May 2015, JFT, Initial version 38 ***************************************************************************** 39 * @endcond 40 */ 41 42 #ifndef SYSTEM_XMC4700_H 43 #define SYSTEM_XMC4700_H 44 45 /******************************************************************************* 46 * HEADER FILES 47 *******************************************************************************/ 48 49 #include <stdint.h> 50 51 /******************************************************************************* 52 * MACROS 53 *******************************************************************************/ 54 55 #define OFI_FREQUENCY (24000000UL) /**< 24MHz Backup Clock (fOFI) frequency. */ 56 #define OSI_FREQUENCY (32768UL) /**< 32KHz Internal Slow Clock source (fOSI) frequency. */ 57 58 /******************************************************************************* 59 * GLOBAL VARIABLES 60 *******************************************************************************/ 61 62 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ 63 extern uint8_t g_chipid[16]; 64 65 /******************************************************************************* 66 * API PROTOTYPES 67 *******************************************************************************/ 68 69 #ifdef __cplusplus 70 extern "C" { 71 #endif 72 73 /** 74 * @brief Initialize the system 75 * 76 */ 77 void SystemInit(void); 78 79 /** 80 * @brief Initialize CPU settings 81 * 82 */ 83 void SystemCoreSetup(void); 84 85 /** 86 * @brief Initialize clock 87 * 88 */ 89 void SystemCoreClockSetup(void); 90 91 /** 92 * @brief Update SystemCoreClock variable 93 * 94 */ 95 void SystemCoreClockUpdate(void); 96 97 /** 98 * @brief Returns frequency of the high performace oscillator 99 * User needs to overload this function to return the correct oscillator frequency 100 */ 101 uint32_t OSCHP_GetFrequency(void); 102 103 #ifdef __cplusplus 104 } 105 #endif 106 107 #endif 108
