git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/RX600_RX630-RSK_Renesas/RTOSDemo/Renesas-Files/cgc.c

   1 \r
   2 \r
   3 /*******************************************************************************\r
   4 * DISCLAIMER\r
   5 * This software is supplied by Renesas Electronics Corporation and is only \r
   6 * intended for use with Renesas products. No other uses are authorized. This \r
   7 * software is owned by Renesas Electronics Corporation and is protected under\r
   8 * all applicable laws, including copyright laws.\r
   9 * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING\r
  10 * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT\r
  11 * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE \r
  12 * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.\r
  13 * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS \r
  14 * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE \r
  15 * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR\r
  16 * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE\r
  17 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.\r
  18 * Renesas reserves the right, without notice, to make changes to this software\r
  19 * and to discontinue the availability of this software. By using this software,\r
  20 * you agree to the additional terms and conditions found by accessing the \r
  21 * following link:\r
  22 * http://www.renesas.com/disclaimer\r
  23 *******************************************************************************/\r
  24 \r
  25 \r
  26 /*\r
  27  * cgc.c\r
  28  *\r
  29  *  Created on: 01 Oct 2011\r
  30  *      Author: RJW\r
  31  *              Reneses Electronics Europe Ltd\r
  32  */\r
  33 \r
  34 \r
  35 /******************************************************************************\r
  36     System Includes                                                           \r
  37 ******************************************************************************/\r
  38 \r
  39 \r
  40 /******************************************************************************\r
  41     User Includes                                                             \r
  42 ******************************************************************************/\r
  43 #include    "iodefine.h"\r
  44 #include    "cgc.h"\r
  45 \r
  46 \r
  47 /*****************************************************************************/\r
  48 /*                                                                           */\r
  49 /* Configure the CGC (Clock Generation Circuit) of the RX630 using the       */\r
  50 /* using the 7 STEPS specified in cgc.h                                      */\r
  51 /*                                                                           */\r
  52 /*****************************************************************************/\r
  53 \r
  54 \r
  55 /******************************************************************************\r
  56    Function     : InitCGC\r
  57    Description  : Initialises the CGC registers based upon the settings\r
  58                   made in file cgc.h\r
  59    Argument     : none\r
  60    Return value : none\r
  61 ******************************************************************************/\r
  62 void InitCGC(void)\r
  63 {\r
  64     unsigned long i;\r
  65     \r
  66 #if (ENABLE_SUB)\r
  67     SYSTEM.SOSCCR.BYTE = 0x00;              /* Sub-clock oscillator ON                      */\r
  68 #else\r
  69     SYSTEM.SOSCCR.BYTE = 0x01;              /* Sub-clock oscillator OFF                     */\r
  70 #endif\r
  71 \r
  72 #if (ENABLE_HOCO)                                                                                                           \r
  73     SYSTEM.HOCOPCR.BYTE = 0x00;             /* HOCO PSU ON                                  */\r
  74     SYSTEM.HOCOCR.BYTE = 0x00;              /* HOCO ON                                      */\r
  75 #else\r
  76     SYSTEM.HOCOPCR.BYTE = 0x01;             /* HOCO PSU OFF                                 */\r
  77     SYSTEM.HOCOCR.BYTE = 0x01;              /* HOCO OFF                                     */\r
  78 #endif\r
  79 \r
  80 \r
  81 \r
  82 #if (ENABLE_MAIN)                                                                       \r
  83     SYSTEM.MOSCWTCR.BYTE = 0x0e;            /* Main Clock Oscillator Wait Control Register  */\r
  84                                             /* 262144 states                                */\r
  85     SYSTEM.MOSCCR.BYTE = 0x00;                          /* EXTAL ON                                     */\r
  86 #else\r
  87     SYSTEM.MOSCCR.BYTE = 0x01;                          /* EXTAL OFF                                    */\r
  88 #endif    \r
  89 \r
  90 \r
  91 #if (ENABLE_PLL)        \r
  92     SYSTEM.MOSCWTCR.BYTE = 0x0e;            /* Main Clock Oscillator Wait Control Register  */\r
  93                                             /* 262144 states                                */\r
  94     SYSTEM.MOSCCR.BYTE = 0x00;                          /* EXTAL ON                                     */\r
  95     \r
  96     SYSTEM.PLLWTCR.BYTE = 0x0e;                         /* PLL Wait Control Register                    */\r
  97                                             /* 2097152 states                               */\r
  98     \r
  99     SYSTEM.PLLCR2.BYTE = 0x01;                          /* PLL OFF                                      */\r
 100     \r
 101     #if (PLL_INPUT_FREQ_DIV == 1)\r
 102         SYSTEM.PLLCR.BIT.PLIDIV = 0;\r
 103     #elif (PLL_INPUT_FREQ_DIV == 2)\r
 104         SYSTEM.PLLCR.BIT.PLIDIV = 1;\r
 105     #elif (PLL_INPUT_FREQ_DIV == 4)\r
 106         SYSTEM.PLLCR.BIT.PLIDIV = 2;\r
 107     #else\r
 108         SYSTEM.PLLCR.BIT.PLIDIV = 0;\r
 109     #endif\r
 110     SYSTEM.PLLCR.BIT.STC   = (PLL_MUL - 1);     \r
 111 \r
 112                                             /* External oscillation input selection         */\r
 113         SYSTEM.PLLCR2.BYTE = 0x00;                              /* PLL ON                                       */\r
 114 #else\r
 115     SYSTEM.PLLCR2.BYTE = 0x01;                          /* PLL OFF                                      */\r
 116 #endif\r
 117         \r
 118     for(i = 0; i<2500; i++)                 /* Wait for stabilisation of                    */\r
 119     {                                       /* HOCO, LOCO, PLL and main clock               */\r
 120     }                                       /* = 20ms                                       */\r
 121                                             /*   (2500 x 1/125kHz = 20ms)                   */\r
 122                                                \r
 123             \r
 124     SYSTEM.SCKCR.LONG = FCLK_SCKCR      | \r
 125                         ICLK_SCKCR      |\r
 126                         PSTOP1_SCKCR    |\r
 127                         BCLK_SCKCR      |\r
 128                         PCLK1215_SCKCR  |\r
 129                         PCLKB_SCKCR     |\r
 130                         PCLK47_SCKCR    |\r
 131                         PCLK03_SCKCR    ;\r
 132  \r
 133         \r
 134     SYSTEM.SCKCR2.WORD = UCK_SCKCR2    |\r
 135                          IEBCK_SCKCR2   ;               \r
 136 \r
 137 \r
 138         SYSTEM.SCKCR3.WORD = CLK_SOURCE;\r
 139 }