/**
  ******************************************************************************
  * 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) 2023 Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

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Version history:
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2023-03-17	V1.0.0	AE TEAM

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Demo introduction:
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本示例功能：UART与7816智能卡芯片通信。

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测试环境:
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测试用板；
ES-PDS-ES32VF2264，HRSDK-GMB-01-V1.2

辅助工具：
无

辅助软件：
无

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测试步骤：
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1) 编译工程，编译通过后将程序下载到目标芯片；
2) 将芯片的RST/IO/CLK引脚分别连接HRSDK-GMB-01测试板的RST/IO/CLK；
3) 在线调试，将变量g_SMART_CARD_OK加入监视窗，运行程序，g_SMART_CARD_OK置1，则通信成功。

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注意：
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1) HRSDK-GMB-01板子上需焊接7816智能卡芯片，焊接在板子背面CARD处；
2) 需要给HRSDK-GMB-01板供电（3.3V），并与ES-PDS-ES32VF2264共GND；
3) 程序中的波特率是根据当前系统时钟计算所得（PCLK/4分频/372）。

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System clock:
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PLL 48MHz

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Pin connection: 
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CARD_RST_PIN ---- PA1
CARD_IO_PIN  ---- PB5
CARD_CLK_PIN ---- PA8
