/**
  @page TIM_TIM1_Synchro TIM_TIM1_Synchro
  
  @verbatim
  ******************** (C) COPYRIGHT 2009 STMicroelectronics *******************
  * @file    TIM/TIM1_Synchro/readme.txt 
  * @author  MCD Application Team
  * @version V3.1.2
  * @date    09/28/2009
  * @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).

TIM1CLK = 72 MHz, Prescaler = 0, TIM1 counter clock = 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)* (Repetion_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)* (Repetion_Counter+1)) = 28.125 KHz and
 a duty cycle equal to TIM4_CCR1/(TIM4_ARR + 1) = 50%

@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 

@par Hardware and Software environment 

  - This example runs on STM32F10x Connectivity line, High-Density, Medium-Density 
    and Low-Density Devices.
  
  - This example has been tested with STMicroelectronics STM3210C-EVAL (STM32F10x 
    Connectivity line), STM3210E-EVAL (STM32F10x High-Density) and STM3210B-EVAL
    (STM32F10x 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) 

  - STM3210E-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:
- Create a project and setup all project configuration
- Add the required Library files:
  - stm32f10x_flash.c   
  - stm32f10x_gpio.c 
  - stm32f10x_rcc.c 
  - stm32f10x_tim.c
  - system_stm32f10x.c (under Libraries\CMSIS\Core\CM3)  
  
- Edit stm32f10x.h file to select the device you are working on.
  
@b Tip: You can tailor the provided project template to run this example, for 
        more details please refer to "stm32f10x_stdperiph_lib_um.chm" user 
        manual; select "Peripheral Examples" then follow the instructions 
        provided in "How to proceed" section.   
- Link all compiled files and load your image into target memory
- Run the example

@note
 - Low-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 16 and 32 Kbytes.
 - Medium-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 32 and 128 Kbytes.
 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 256 and 512 Kbytes.
 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
   
 * <h3><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h3>
 */
