1. ˵
    չʾ RT_Thread ϵͳ DAC 豸

2. ʹû
    Ӳ̶ӦĿӲƽ̨ 
    壺   N32G4FRH_STB V1.1

3. ʹ˵
    ģ÷:ʱӣI/O 
         1. SystemClock144MHz
         2. GPIOLED(D1)--PA8
                        ADC:
                               PA0ѡΪģ⹦ADC1תͨ
                        DAC:
                               PA4ѡΪģ⹦DAC1 OUT
                        ־USART1TX--PA9  RX--PA10ʣ115200

    DemoĲԲ 
         1. سλ
         2. main()洴̣߳test0 ̺߳ test1 ̣߳test0 ߳ڿ D1 250ms˸test1̲߳ DAC 豸 PA4  PA0 ADC  DAC ͨڴӡ

4. ע
    

1. Function description
    This routine shows how to create an DAC device on the RT_Thread system

2. Use environment
    Hardware environment: development hardware platform corresponding to the project 
    Development board:      N32G4FRH_STB V1.1

3. Instructions for use
    Describe the configuration method of related modules; for example: clock, I/O, etc. 
        1. SystemClock: 144MHz
        2. GPIO: LED(D1)--PA8
                     ADC:
                            PA0 is selected as the analog function ADC1 conversion channel
                    DAC:
                            PA4 is selected as the analog function DAC1 OUT
                     Log(USART1): TX--PA9 RX--PA10 Baud rate: 115200

    Describe the test steps and phenomena of Demo 
        1. After compiling, download the program to reset and run;
        2. This routine creates two threads in main(), test0 thread and test1 thread, test0 thread is used to control D1 250ms flicker, test1 thread is used to test the DAC device, 
            connect PA4 and PA0 with jumper, measure DAC output with ADC, print through serial port

4. Matters needing attention
    None.