报名的时候没有申请板子，自己手里还有好多板子不会用在吃灰 。
今年寒假回来开始学的单片机，所以用的自己的stm32f767igt6开发版。
rt-thread的教程还没看明白，所以先硬着头皮上了。
做的是一个sht30采集温湿度数据，上传到自己的emq服务器，然后在nodered平台进行显示，用的报名申请的ucloud服务器。
就是简单的连线，哈哈
现在来看程序：
创建的一个SHT30获取温湿度数据的线程，使用rtthread studio 自带的sht3x软件包和模拟i2c。
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-06-14 wangy the first version
*/
#include <rtthread.h>
#include <board.h>
#include <sht3x.h>
#include <string.h>
#define THREAD_PRIORITY 10
#define THREAD_STACK_SIZE 1028
#define THREAD_TIMESLICE 20
static rt_thread_t tid1 = RT_NULL;
/* 入口函数 */
static void sht30_init_thread_entry(void *parameter)
{
sht3x_device_t sht3x_device;
sht3x_device = sht3x_init("i2c1", 0x44);
rt_thread_mdelay(100);
char num[100];
while (1)
{
if(RT_EOK == sht3x_read_singleshot(sht3x_device))
{
memset(num,0,100);
sprintf(num,"{\"humidity\": %d,\"temperature\": %d}",(int)sht3x_device->humidity,(int)sht3x_device->temperature);
rt_device_write(rt_device_find("uart2" ), 0, num, (strlen(num)));
rt_kprintf("sht30 humidity : %d.%d ", (int)sht3x_device->humidity, (int)(sht3x_device->humidity * 10) % 10);
rt_kprintf("temperature: %d.%d\n", (int)sht3x_device->temperature, (int)(sht3x_device->temperature * 10) % 10);
}
else
{
rt_kprintf("read sht3x fail.\r\n");
break;
}
rt_thread_mdelay(2000);
}
}
/* 创建线程 */
int sht30_init(void)
{
/* 创建线程*/
tid1 = rt_thread_create("sht_30_init",
sht30_init_thread_entry, RT_NULL,
THREAD_STACK_SIZE,
THREAD_PRIORITY, THREAD_TIMESLICE);
/* 如果获得线程控制块，启动这个线程 */
if (tid1 != RT_NULL)
rt_thread_startup(tid1);
return 0;
}
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-05-15 RT-Thread first version
*/
#include <rtthread.h>
#include <string.h>
#define DBG_TAG "main"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>
#include <sht3x.h>
extern int sht30_init(void);
//static char str[] = "hello wty!\r\n"; /* 需要发送的数据 */
static int uart2_init(void)
{
rt_device_open(rt_device_find("uart2"), RT_DEVICE_FLAG_INT_RX);
return 0;
}
int main(void)
{
int count = 1;
sht30_init();
uart2_init();
while (count++)
{
// LOG_D("Hello RT-Thread!");
// rt_kprintf("hello");
rt_thread_mdelay(1000);
}
return RT_EOK;
}
MSH_CMD_EXPORT(uart2_init, uart device sample);
下面是自己搭建的emq服务器
以下为nodered显示效果
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