/**
  ******************************************************************************
  * 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) 2021 Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

<--------------------------------------------------------------------------------
Version history:
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2021-1-4	V1.0.0	AE TEAM


<--------------------------------------------------------------------------------
Demo introduction:
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@pin connection: 

	LCD COM1---> MCU COM4   PC9
	LCD COM2---> MCU COM3   PC8
	LCD COM3---> MCU COM2   PC7
	LCD COM4---> MCU COM1   PC6
	LCD SEG1---> MCU SEG16  PB8
	LCD SEG2---> MCU SEG21  PB7
	LCD SEG3---> MCU SEG10  PB6
	LCD SEG4---> MCU SEG15  PB15
	LCD SEG5---> MCU SEG14  PB14
	LCD SEG6---> MCU SEG13  PB13
	LCD SEG7---> MCU SEG12  PB12
	LCD SEG8---> MCU SEG11  PB2
	
@how to use

LCD 实时显示数字，初始状态“0000”，每次加1，显示“9999”后重新回到“0000”；显示10的倍数（包括“0000”）时，LCD闪烁。

<--------------------------------------------------------------------------------
The main document introduction:
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system:
startup_es32f0xx.s ------- Startup file

user:
irq.c -------------------- Interrupt handlers file
main.c ------------------- Main source file
main.h ------------------- Main header file

ald lib:
utils.c ------------------ ALD drivers configuration file
ald_cmu.c ---------------- CMU ALD drivers file
ald_dma.c ---------------- DMA ALD drivers file
ald_gpio.c --------------- GPIO ALD drivers file
ald_lcd.c ---------------- LCD ALD driver file
