/**
  @page TIM_TIM1_Synchro TIM1 Synchro example
  
  @verbatim
  ******************** (C) COPYRIGHT 2011 STMicroelectronics *******************
  * @file    TIM/TIM1_Synchro/readme.txt 
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    08-April-2011
  * @brief   Description of the TIM TIM1 Synchro example.
  ******************************************************************************
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  ******************************************************************************
   @endverbatim

@par Example Description 

This example shows how to synchronize TIM1 and Timers (TIM3 and TIM4) in parallel mode.

Timers synchronisation in parallel mode:

1/ TIM1 is configured as Master Timer:
 - PWM Mode is used
 - The TIM1 Update event is used as Trigger Output 
 
2/ TIM3 and TIM4 are slaves for TIM1,
 - PWM Mode is used
 - The ITR0(TIM1) is used as input trigger for both slaves
 - Gated mode is used, so starts and stops of slaves counters
  are controlled by the Master trigger output signal(update event).

o For Low-density, Medium-density, High-density and Connectivity line devices:
  The TIMxCLK is fixed to 72 MHz, Prescaler = 0 so the TIM1 counter clock is 72 MHz.

  The Master Timer TIM1 is running at:
  TIM1 frequency = TIM1 counter clock / (TIM1_Period + 1) = 281.250 KHz
  and the duty cycle is equal to: TIM1_CCR1/(TIM1_ARR + 1) = 50%

  The TIM3 is running at: 
  (TIM1 frequency)/ ((TIM3 period +1)* (Repetition_Counter+1)) = 18.750 KHz and
  a duty cycle equal to TIM3_CCR1/(TIM3_ARR + 1) = 33.3%

  The TIM4 is running at:
  (TIM1 frequency)/ ((TIM4 period +1)* (Repetition_Counter+1)) = 28.125 KHz and
  a duty cycle equal to TIM4_CCR1/(TIM4_ARR + 1) = 50%
  
o For Value line devices:
  The TIMxCLK is fixed to 24 MHz, Prescaler = 0 so the TIM1 counter clock is 24 MHz.
  TIM1 frequency = 93.75 KHz
  TIM3 frequency = 6.25 KHz
  TIM4 frequency = 9.375 KHz

@par Directory contents 

  - TIM/TIM1_Synchro/stm32f10x_conf.h    Library Configuration file
  - TIM/TIM1_Synchro/stm32f10x_it.c      Interrupt handlers
  - TIM/TIM1_Synchro/stm32f10x_it.h      Interrupt handlers header file
  - TIM/TIM1_Synchro/main.c              Main program 
  - TIM/TIM1_Synchro/system_stm32f10x.c  STM32F10x system source file
  
@par Hardware and Software environment 

  - This example runs on STM32F10x Connectivity line, High-Density, High-Density 
    Value line, Medium-Density, XL-Density, Medium-Density Value line, Low-Density 
    and Low-Density Value line Devices.
  
  - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density
    Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL (Connectivity line), 
    STM3210E-EVAL (High-Density and XL-Density) and STM3210B-EVAL (Medium-Density) 
    evaluation boards and can be easily tailored to any other supported device 
    and development board.
    

  - STM3210C-EVAL Set-up 
   - Connect the following pins to an oscilloscope to monitor the different waveforms:
      - TIM1 CH1 (PE.08) Remapped pin
      - TIM3 CH1 (PC.06) Remapped pin
      - TIM4 CH1 (PB.06) 

  - STM32100B-EVAL, STM3210E-EVAL, STM32100E-EVAL and STM3210B-EVAL Set-up 
   - Connect the following pins to an oscilloscope to monitor the different waveforms:
      - TIM1 CH1 (PA.08)
      - TIM3 CH1 (PA.06)
      - TIM4 CH1 (PB.06)  
  
@par How to use it ? 

In order to make the program work, you must do the following :
 - Copy all source files from this example folder to the template folder under
   Project\STM32F10x_StdPeriph_Template
 - Open your preferred toolchain 
 - Rebuild all files and load your image into target memory
 - Run the example 

@note
 - Low-density Value line devices are STM32F100xx microcontrollers where the 
   Flash memory density ranges between 16 and 32 Kbytes.
 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx 
   microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
 - Medium-density Value line devices are STM32F100xx microcontrollers where
   the Flash memory density ranges between 64 and 128 Kbytes.  
 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx 
   microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
 - High-density Value line devices are STM32F100xx microcontrollers where
   the Flash memory density ranges between 256 and 512 Kbytes.
 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 256 and 512 Kbytes.
 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 512 and 1024 Kbytes.
 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
   
 * <h3><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h3>
 */