/**
  @page LCD_Blink_Frequency LCD Blink frequency example
  
  @verbatim
  ******************** (C) COPYRIGHT 2012 STMicroelectronics *******************
  * @file    LCD/LCD_Blink_Frequency/readme.txt 
  * @author  MCD Application Team
  * @version V1.1.1
  * @date    13-April-2012
  * @brief   Description of the LCD Blink Frequency example.
  ******************************************************************************
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
   @endverbatim

@par Example Description 

This example provides a description of how to use the STM32L1xx embedded LCD GLASS 
controller and how to configures the LCD Blink mode and Blink frequency. 
After Reset the Blink frequency is equal to LCDCLK/16 and LCD Glass display "BLF0016"
string. By pressing on the Key button (PA.00)the Blink frequency is incremented 
and the message displayed on the Pacific Display LCD glass (PD-878) is proportional 
to the blink frequency.

In this example, 6 different Blink frequency are used:
   - The Blink frequency = fLcd/16
   - The Blink frequency = fLcd/32
   - The Blink frequency = fLcd/64
   - The Blink frequency = fLcd/128
   - The Blink frequency = fLcd/256
   - The Blink frequency = fLcd/512
   - The Blink frequency = fLcd/1024
   

@par Directory contents 

  - LCD/LCD_Blink_Frequency/stm32l1xx_conf.h    Library Configuration file
  - LCD/LCD_Blink_Frequency/stm32l1xx_it.c      Interrupt handlers
  - LCD/LCD_Blink_Frequency/stm32l1xx_it.h      Interrupt handlers header file
  - LCD/LCD_Blink_Frequency/main.c              Main program
  - LCD/LCD_Blink_Frequency/system_stm32l1xx.c  STM32L1xx system source file
  
@note The "system_stm32l1xx.c" is generated by an automatic clock configuration 
      system and can be easily customized to your own configuration. 
      To select different clock setup, use the "STM32L1xx_Clock_Configuration_V1.1.0.xls" 
      provided with the AN3309 package available on <a href="http://www.st.com/internet/mcu/family/141.jsp">  ST Microcontrollers </a>
         
@par Hardware and Software environment

  - This example runs on STM32L1xx Ultra Low Power High-, Medium-Density and Medium-Density Plus Devices.
  
  - This example has been tested with STMicroelectronics STM32L152D-EVAL (STM32L1xx 
    Ultra Low Power High-Density) and STM32L152-EVAL (STM32L1xx Ultra Low 
    Power Medium-Density) evaluation board and can be easily tailored to any 
    other supported device and development board.

  - STM32L152-EVAL Set-up
    - LCD Glass pins is shared with USART3 via jumpers, so make sure that
         Jumper 7 (JP7) is in position 1<-->2.
         Jumper 8 (JP8) is in position 1<-->2.
    - Key push button (PC.13).

  - STM32L152D-EVAL Set-up
    - Make sure that the embedded LCD GLASS is in LCD position.
    - Key push button (PC.13).
      
@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\STM32L1xx_StdPeriph_Templates
 - Open your preferred toolchain 
 - Rebuild all files and load your image into target memory
 - Run the example

@note
- Ultra Low Power Medium-density devices are STM32L151xx and STM32L152xx 
  microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
- Ultra Low Power Medium-density Plus devices are STM32L151xx, STM32L152xx and 
  STM32L162xx microcontrollers where the Flash memory density is 256 Kbytes.
- Ultra Low Power High-density devices are STM32L151xx, STM32L152xx and STM32L162xx 
  microcontrollers where the Flash memory density is 384 Kbytes.
    
 * <h3><center>&copy; COPYRIGHT STMicroelectronics</center></h3>
 */


