/**
  ******************************************************************************
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Copyright (C) Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

<--------------------------------------------------------------------------------
Version history:
--------------------------------------------------------------------------------->
2020-03-18	V1.0.0	AE TEAM


<--------------------------------------------------------------------------------
Demo introduction:
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Display number and point using LCD.

<--------------------------------------------------------------------------------
System clock:
--------------------------------------------------------------------------------->
External HOSC[12MHz] divided by 3, then PLL to 48Mhz.

<--------------------------------------------------------------------------------
Pin connection: 
--------------------------------------------------------------------------------->
LCD_COM1---MCU_COM5----(PA8, GPIO_FUN_0)
LCD_COM2---MCU_COM4----(PC9, GPIO_FUN_0)
LCD_COM3---MCU_COM2----(PC7, GPIO_FUN_0)
LCD_COM4---MCU_COM3----(PC8, GPIO_FUN_0)
LCD_SEG1---MCU_SEG34---(PD14, GPIO_FUN_0)
LCD_SEG2---MCU_SEG15---(PB15, GPIO_FUN_0)
LCD_SEG3---MCU_SEG14---(PB14, GPIO_FUN_0)
LCD_SEG4---MCU_SEG13---(PB13, GPIO_FUN_0)
LCD_SEG5---MCU_SEG12---(PB12, GPIO_FUN_0)
LCD_SEG6---MCU_SEG26---(PD5, GPIO_FUN_0)
LCD_SEG7---MCU_SEG27---(PD6, GPIO_FUN_0)
LCD_SEG8---MCU_SEG35---(PD7, GPIO_FUN_0)