/*

	system_stm32f10x.h - This provides system clock functions and an exported
                        variable for System init and clock configuration.
   includes:
      SystemInit, SystemInit_ExtMemCtl, Sys_Sysclk_Update, Sys_GetSysclk_src,
      Sys_SetSysclk_src, Sys_HSI_Cmd, Sys_HSE_Cmd, Sys_ExtClock_Cmd,
      Sys_PLL_Cmd, Sys_SetPLLClock

   Copyright (C) 2011 Houtouridis Christos (http://houtouridis.blogspot.com/)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   Author:     Houtouridis Christos <houtouridis.ch@gmail.com>
   Date:       11/2011
   Version:    0.1
*/

#ifndef __stm32f10x_clock_h__
#define __stm32f10x_clock_h__

#ifdef __cplusplus
extern "C" {
#endif

#include <stm32f10x.h>
#include "stm32f10x_assert.h"

/* ================     User Defines       ======================*/

#define  SYSTEM_STARTUP_TIMEOUT           (0x500)

/* ================     General Defines       ======================*/

#define SYSCLK_HSI_FREQ      (8000000)

#ifndef CLOCK
 #warning "CLOCK is not defined. Used 8000000 as default value"
 #define CLOCK  (SYSCLK_HSI_FREQ)
#endif

#if defined (STM32F10X_LD_VL) || (defined STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
   #define  SYSTEM_MAX_CLK       (24000000)
   #define  SYSTEM_MIN_CLK       (8000000)
#elif defined (STM32F10X_MD)
   #define  SYSTEM_MAX_CLK       (32000000)
   #define  SYSTEM_MIN_CLK       (8000000)
#elif defined (STM32F10X_HD)
   #define  SYSTEM_MAX_CLK       (36000000)
   //#define  SYSTEM_MAX_CLK       (48000000)
   //#define  SYSTEM_MAX_CLK       (72000000)
   #define  SYSTEM_MIN_CLK       (8000000)
#endif


typedef  uint32_t    CLK_t;
typedef  enum
{
   // DO NOT change the numbers,
   //see STM Reference manual page 83
   HSI=0, HSE, PLLCLK
}Sys_CLK_src_t;

typedef  enum
{
   DIS=0, EN
}Sys_FunctionalState_t;

typedef  enum
{
   HSI_2=0, PREDIV
}Sys_PLL_src_t;

typedef  enum
{
   System_OK=0, System_ERROR
}Sys_Exit_t;






/* ================     Exported Functions       ======================*/

CLK_t    Sys_Sysclk_Update (void);


Sys_CLK_src_t Sys_GetSysclk_src (void);
Sys_Exit_t    Sys_SetSysclk_src (Sys_CLK_src_t cs);

Sys_Exit_t    Sys_HSI_Cmd (Sys_FunctionalState_t state);
Sys_Exit_t    Sys_HSE_Cmd (Sys_FunctionalState_t state);
Sys_Exit_t    Sys_ExtClock_Cmd (Sys_FunctionalState_t state);
Sys_Exit_t    Sys_PLL_Cmd (Sys_FunctionalState_t state);
Sys_Exit_t    Sys_SetPLLClock (CLK_t clk, Sys_PLL_src_t ps);



#ifdef __cplusplus
}
#endif

#endif   // #ifndef __stm32f10x_clock_h__