/**
  ******************************************************************************
  * 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.
  *******************************************************************************
  */

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Version history
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2021-09-03  	V1.0.0  	AE TEAM

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Demo introduction
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本示例功能：控制任务的运行状态（操作：挂起、恢复）

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测试环境
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测试用板；
ES-PDS-ES32F369x-V2.1

辅助软件/工具（其中一个）：
SecureCRT 5.5 / XCOM / ESBridge

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测试步骤（以ESBridge为例）
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[例子程序运行前]
1) 编译工程，编译通过后将程序下载到目标芯片。
2) 将程序配置的UART_TX/UART_RX对应的引脚分别连接UART_RX/UART_TX。
3) ESBridge通过USB线缆连接PC，打开上位机软件，“设备操作”选项里选择“打开”。
4) 上位机切换到UART标签页，按照程序配置参数（波特率=115200  停止位=1 数据位=8 模式选择=正常模式），点击打开。

[例子程序运行后]
1) 创建2个任务：
Key_Task：检测按键。如果key1被按，则挂起LED_Task。如果key2被按，则恢复LED_Task。
LED_Task：被控制的任务，通过 翻转led+uart打印信息 来表明运行状态。

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注意（以ESBridge为例）
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1) 测试板与ESBridge需共GND。

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System clock:
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External HOSC divided by 3, then PLL to 72MHz.

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Pin connection: 
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[UART]
UART0_TX   ---- (PB10, GPIO_FUNC_3)(需手动连接)
UART0_RX   ---- (PB11, GPIO_FUNC_3)(需手动连接)

[GPIO_INPUT / KEY]
KEY1       ---- (PF0 , GPIO_FUNC_1)(开发板自带)
KEY2       ---- (PF6 , GPIO_FUNC_1)(开发板自带)

[GPIO_OUTPUT / LED]
LED1       ---- (PC6 , GPIO_FUNC_1)(开发板自带)
LED2       ---- (PC12, GPIO_FUNC_1)(开发板自带)