【中科蓝讯AB32VG1 RISC-V板“碰上”RTT测评】ADC

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【中科蓝讯AB32VG1 RISC-V板“碰上”RTT测评】ADC [复制链接]

 

 

首先使能adc后寻找设备挂载： (rt_adc_device_t)rt_device_find(ADC_DEV_NAME)

然后使能adc：rt_adc_enable(adc_dev, 0);

获取adc的值:value = rt_adc_read(adc_dev, 0)

因为setting那没有讲adc0在哪个引脚，所以就去手册查找了，是PA5：还纠结了好久最终还是找到了。
 

 

 

 

 

代码如下，创建一个线程，然后初始化adc，使能adc，读取adc值：

#define ADC_DEV_NAME        "adc0"


static void adc0(void* pdata)
{
    rt_err_t ret = RT_EOK;
    rt_uint32_t value,vol;
    rt_adc_device_t adc_dev;

    adc_dev = (rt_adc_device_t)rt_device_find(ADC_DEV_NAME);
    if (adc_dev == RT_NULL)
    {
        rt_kprintf("can't find %s device!\n", ADC_DEV_NAME);
    }

    ret = rt_adc_enable(adc_dev, 0);

    while(1)
    {
        value = rt_adc_read(adc_dev, 0);
        rt_kprintf("\nthe value is   :%d \n", value);  
        vol = value * 3300 / 1024;
        rt_kprintf("the voltage is :%d.%03d \n", vol / 1000, vol % 1000);
  
        rt_thread_mdelay(100);    
    
    }
}


static int adc_Thread_Init(void)
{
    rt_thread_t thread = RT_NULL;
    thread = rt_thread_create("adc_thread", adc0, RT_NULL, 512, 10, 10);
    if(thread == RT_NULL)
    {
        rt_kprintf("Thread_ADC Init ERROR");
        return RT_ERROR;
    }
    rt_thread_startup(thread);


}
INIT_APP_EXPORT(adc_Thread_Init);  // 初始化线程

旋转电位器：

还有就是kprintf不支持浮点数的打印，所以要处理一下，把整数和小数分开打印就行了

 

 

 

 

soso

加油，期待楼主后续。