bossay_release_out/vendor/bossay/DHT11/demo_DHT11/main_entry.c

#include "iot_cloud.h"
#include "iot_boardled.h"
#include "iot_boardbutton.h"
#include "iot_wifi.h"
#include "iot_netcfg.h"
#include "iot_sntp.h"
#include "ohos_init.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <cmsis_os2.h>
#include <stdbool.h>
#include "kv_store.h"
#include "iot_schedule.h"
#include "network_config_service.h"
#include "iot_netcfg_nan.h"
#include "hi_time.h"
#include "hi_reset.h"
#include "iot_gpio.h"
#include "iot_gpio_ex.h"


#define CONFIG_TASK_MAIN_STACKSIZE 0x2000
#define CONFIG_TASK_MAIN_PRIOR 25
#define DHT11_DQ_GPIO 13
											   
void GPIO_mode_out(void)
{
    IoTGpioInit(DHT11_DQ_GPIO);
    IoTGpioSetFunc(DHT11_DQ_GPIO, IOT_GPIO_FUNC_GPIO_13_GPIO);
    IoTGpioSetDir(DHT11_DQ_GPIO, IOT_GPIO_DIR_OUT); // 设置为输出模式
}

void GPIO_mode_in(void)
{
    IoTGpioInit(DHT11_DQ_GPIO);
    IoTGpioSetFunc(DHT11_DQ_GPIO, IOT_GPIO_FUNC_GPIO_13_GPIO);
    IoTGpioSetDir(DHT11_DQ_GPIO, IOT_GPIO_DIR_IN); // 设置为输入模式

}

static uint8_t DHT11_DQ_IN(void)
{
	IotGpioValue temp = {0};
    IoTGpioGetInputVal(DHT11_DQ_GPIO,&temp);
    return temp;
}

//Reset DHT11
void DHT11_Rst(void)	   
{                 
    GPIO_mode_out(); 	//SET OUTPUT
    IoTGpioSetOutputVal(DHT11_DQ_GPIO, 0); 	//GPIOA.0=0
	printf("rst start\r \n");
    osDelay(2);    	//Pull down Least 18ms
    printf("rst down\r \n");
    IoTGpioSetOutputVal(DHT11_DQ_GPIO, 1);	//GPIOA.0=1 
    
    hi_udelay(30);     	//Pull up 20~40us
    printf("rst ok\r \n");
}

uint8_t DHT11_Check(void) 	   
{   
	uint8_t retry=0;
	GPIO_mode_in();//SET INPUT	 
    while (DHT11_DQ_IN()&&retry<100)//DHT11 Pull down 40~80us
	{
		retry++;
		hi_udelay(1);
	};	 
	if(retry>=100)
		return 1;
	else 
		retry=0;
    while (!DHT11_DQ_IN()&&retry<100)//DHT11 Pull up 40~80us
	{
		retry++;
		hi_udelay(1);
	};
	if(retry>=100)
		return 1;//chack error	    
	return 0;
}

uint8_t DHT11_Read_Bit(void) 			 
{
 	uint8_t retry=0;
	while(DHT11_DQ_IN()&&retry<100)//wait become Low level
	{
		retry++;
		hi_udelay(1);
	}
	retry=0;
	while(!DHT11_DQ_IN()&&retry<100)//wait become High level
	{
		retry++;
		hi_udelay(1);
	}
	hi_udelay(50);//wait 40us
	if(DHT11_DQ_IN())
		return 1;
	else 
		return 0;		   
}

uint8_t DHT11_Read_Byte(void)    
{        
    uint8_t i,dat;
    dat=0;
	for (i=0;i<8;i++) 
	{
   		dat<<=1; 
	    dat|=DHT11_Read_Bit();
    }						    
    return dat;
}

uint8_t DHT11_Read_Data(uint8_t *temperature,uint8_t *humidity)    
{        
 	uint8_t buf[5];
	uint8_t i;
	DHT11_Rst();
	if(DHT11_Check()==0)
	{
		for(i=0;i<5;i++)
		{
			buf[i]=DHT11_Read_Byte();
		}
		if((buf[0]+buf[1]+buf[2]+buf[3])==buf[4])
		{
			*humidity=buf[0];
			*temperature=buf[2];
		}
	}
	else 
		return 1;
	return 0;	    
}



static void EntryMain(void)
{
    

    int ret;
    uint8_t dht_temperature;
	uint8_t dht_humidity;
    printf("***********************DTH11 demo******************\r\n");
    while(1){

        DHT11_Read_Data(&dht_temperature,&dht_humidity);
        RaiseLog(LOG_LEVEL_INFO,"temperature=%d\r\n",dht_temperature);
		RaiseLog(LOG_LEVEL_INFO,"humidity=%d\r\n",dht_humidity);
        osDelay(1000);
    }
}
// static void EntryMain(void)
// {
//     osThreadAttr_t attr;
//     RaiseLog(LOG_LEVEL_INFO, "DATA:%s Time:%s \r\n", __FUNCTION__, __DATE__, __TIME__);
//     // Create the IoT Main task
//     attr.attr_bits = 0U;
//     attr.cb_mem = NULL;
//     attr.cb_size = 0U;
//     attr.stack_mem = NULL;
//     attr.stack_size = CONFIG_TASK_MAIN_STACKSIZE;
//     attr.priority = CONFIG_TASK_MAIN_PRIOR;
//     attr.name = "IoTMain";
//     (void) osThreadNew((osThreadFunc_t)IotMainTaskEntry, NULL, (const osThreadAttr_t *)&attr);

//     return;
// }
APP_FEATURE_INIT(EntryMain);