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md 补充我的实践的介绍

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@ -240,6 +240,214 @@ W25Q64→注册为spi20设备，挂载到spi2总线上（**SPI设备**）→*通
![DFS结合FAL配置W25Q64](image-1.png) ![DFS结合FAL配置W25Q64](image-1.png)
## 我的实践
### 读取传感器数据，上传到阿里云
（合并头两个代码），拼接字符串时我用了`sprintf`，其实应该也可以样例原有的`HAL_Snprintf`的
``` c
#include "rtthread.h"
#include "dev_sign_api.h"
#include "mqtt_api.h"
#include <board.h>
#include <drv_gpio.h>
#include <stdio.h>
#include <string.h>
#include "aht10.h"
char DEMO_PRODUCT_KEY[IOTX_PRODUCT_KEY_LEN + 1] = {0};
char DEMO_DEVICE_NAME[IOTX_DEVICE_NAME_LEN + 1] = {0};
char DEMO_DEVICE_SECRET[IOTX_DEVICE_SECRET_LEN + 1] = {0};
void *HAL_Malloc(uint32_t size);
void HAL_Free(void *ptr);
void HAL_Printf(const char *fmt, ...);
int HAL_GetProductKey(char product_key[IOTX_PRODUCT_KEY_LEN + 1]);
int HAL_GetDeviceName(char device_name[IOTX_DEVICE_NAME_LEN + 1]);
int HAL_GetDeviceSecret(char device_secret[IOTX_DEVICE_SECRET_LEN]);
uint64_t HAL_UptimeMs(void);
int HAL_Snprintf(char *str, const int len, const char *fmt, ...);
// AHT挂载的总线名字
#define AHT10_I2C_BUS "i2c3"
// AHT设备指针
aht10_device_t Dev = RT_NULL;
// Humi:湿度值,Temp:温度值
float Humi, Temp;
#define EXAMPLE_TRACE(fmt, ...) \
do { \
HAL_Printf("%s|%03d :: ", __func__, __LINE__); \
HAL_Printf(fmt, ##__VA_ARGS__); \
HAL_Printf("%s", "\r\n"); \
} while(0)
static void example_message_arrive(void *pcontext, void *pclient, iotx_mqtt_event_msg_pt msg)
{
iotx_mqtt_topic_info_t *topic_info = (iotx_mqtt_topic_info_pt) msg->msg;
switch (msg->event_type) {
case IOTX_MQTT_EVENT_PUBLISH_RECEIVED:
/* print topic name and topic message */
EXAMPLE_TRACE("Message Arrived:");
EXAMPLE_TRACE("Topic : %.*s", topic_info->topic_len, topic_info->ptopic);
EXAMPLE_TRACE("Payload: %.*s", topic_info->payload_len, topic_info->payload);
EXAMPLE_TRACE("\n");
break;
default:
break;
}
}
static int example_subscribe(void *handle)
{
int res = 0;
const char *fmt = "/%s/%s/user/get";
char *topic = NULL;
int topic_len = 0;
topic_len = strlen(fmt) + strlen(DEMO_PRODUCT_KEY) + strlen(DEMO_DEVICE_NAME) + 1;
topic = HAL_Malloc(topic_len);
if (topic == NULL) {
EXAMPLE_TRACE("memory not enough");
return -1;
}
memset(topic, 0, topic_len);
HAL_Snprintf(topic, topic_len, fmt, DEMO_PRODUCT_KEY, DEMO_DEVICE_NAME);
res = IOT_MQTT_Subscribe(handle, topic, IOTX_MQTT_QOS0, example_message_arrive, NULL);
if (res < 0) {
EXAMPLE_TRACE("subscribe failed");
HAL_Free(topic);
return -1;
}
HAL_Free(topic);
return 0;
}
char tmp[256];
void tmp_payload(void)
{
// 读取温湿度值
Humi = aht10_read_humidity(Dev);
Temp = aht10_read_temperature(Dev);
sprintf(tmp, "{\"params\":{\"temperature\":%.2f,\"humidity\":%.2f}}", Temp, Humi);
rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,tmp);
return;
}
static int example_publish(void *handle)
{
tmp_payload();
int res = 0;
const char *fmt = "/sys/%s/%s/thing/event/property/post";
// /k1lyriw1yGj/${deviceName}/user/get
char *topic = NULL;
int topic_len = 0;
char *payload = tmp;
// strcpy(payload,tmp_payload());
rt_kprintf("payload:%s\n",payload);
topic_len = strlen(fmt) + strlen(DEMO_PRODUCT_KEY) + strlen(DEMO_DEVICE_NAME) + 1;
topic = HAL_Malloc(topic_len);
if (topic == NULL) {
EXAMPLE_TRACE("memory not enough");
return -1;
}
memset(topic, 0, topic_len);
HAL_Snprintf(topic, topic_len, fmt, DEMO_PRODUCT_KEY, DEMO_DEVICE_NAME);
res = IOT_MQTT_Publish_Simple(0, topic, IOTX_MQTT_QOS0, payload, strlen(payload));
if (res < 0) {
EXAMPLE_TRACE("publish failed, res = %d", res);
HAL_Free(topic);
return -1;
}
HAL_Free(topic);
return 0;
}
static void example_event_handle(void *pcontext, void *pclient, iotx_mqtt_event_msg_pt msg)
{
EXAMPLE_TRACE("msg->event_type : %d", msg->event_type);
}
static void mqtt_example_main(void *parameter)
{
void *pclient = NULL;
int res = 0;
int loop_cnt = 0;
iotx_mqtt_param_t mqtt_params;
HAL_GetProductKey(DEMO_PRODUCT_KEY);
HAL_GetDeviceName(DEMO_DEVICE_NAME);
HAL_GetDeviceSecret(DEMO_DEVICE_SECRET);
EXAMPLE_TRACE("mqtt example");
memset(&mqtt_params, 0x0, sizeof(mqtt_params));
mqtt_params.handle_event.h_fp = example_event_handle;
pclient = IOT_MQTT_Construct(&mqtt_params);
if (NULL == pclient) {
EXAMPLE_TRACE("MQTT construct failed");
return ;
}
res = example_subscribe(pclient);
if (res < 0) {
IOT_MQTT_Destroy(&pclient);
return ;
}
while (1) {
if (0 == loop_cnt % 20) {
example_publish(pclient);
}
IOT_MQTT_Yield(pclient, 200);
loop_cnt += 1;
}
return ;
}
#define THREAD_PRIORITY 25
#define THREAD_STACK_SIZE 4096
#define THREAD_TIMESLICE 5
rt_thread_t MQTT_Thread = RT_NULL;
void MQTT_Creat_Thread(void)
{
// 初始化设备
Dev = aht10_init(AHT10_I2C_BUS);
if (Dev == RT_NULL)
{
rt_kprintf("AHT10_init Fail");
return;
}
MQTT_Thread = rt_thread_create("MTQQ_Thread", mqtt_example_main, RT_NULL, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
if (MQTT_Thread != RT_NULL)
{
rt_thread_startup(MQTT_Thread);
}
else
{
rt_kprintf("MQTT Thread Create Failed!\n");
}
}
MSH_CMD_EXPORT(MQTT_Creat_Thread, create a MQTT_Thread);
```
[更多参考官方文档链接](https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-standard/programming-manual/filesystem/filesystem?id=%e6%96%87%e4%bb%b6%e7%ae%a1%e7%90%86) [更多参考官方文档链接](https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-standard/programming-manual/filesystem/filesystem?id=%e6%96%87%e4%bb%b6%e7%ae%a1%e7%90%86)