/**
  ******************************************************************************
  * 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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2023-1-9	V1.0.0	AE TEAM

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Demo introduction:
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本示例功能：I2S与WM8978通信，并将麦克风音频实时传输到输出。

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测试环境:
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测试用板；
ES-PDS-ES32VF2264，PZ-WM8978

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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WS/CK/SDI/SDO/MCK分别连接PZ-WM8978
3) 复位芯片，或在线调试，运行程序，可以通过耳机或喇叭听到麦克风采集的音频。

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注意：
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1) PZ-WM8978需要5V供电

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Pin connection:
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I2S0_WS   ---- (PA4, GPIO_FUNC_2)
I2S0_CK   ---- (PA5, GPIO_FUNC_2)
I2S0_SDI  ---- (PA6, GPIO_FUNC_2)
I2S0_SDO  ---- (PA7, GPIO_FUNC_2)
I2S0_MCK  ---- (PA8, GPIO_FUNC_7)
I2C0_SCL  ---- (PB2, GPIO_FUNC_1)
I2C0_SDA  ---- (PB3, GPIO_FUNC_1)
UART_TX   ---- (PA2, GPIO_FUNC_2)
