md 补充我的实践的介绍
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Day5/README.md
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Day5/README.md
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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
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## 我的实践
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### 读取传感器数据，上传到阿里云
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（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
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``` c
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#include "rtthread.h"
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#include "dev_sign_api.h"
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#include "mqtt_api.h"
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#include <board.h>
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#include <drv_gpio.h>
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#include <stdio.h>
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#include <string.h>
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#include "aht10.h"
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char DEMO_PRODUCT_KEY[IOTX_PRODUCT_KEY_LEN + 1] = {0};
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char DEMO_DEVICE_NAME[IOTX_DEVICE_NAME_LEN + 1] = {0};
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char DEMO_DEVICE_SECRET[IOTX_DEVICE_SECRET_LEN + 1] = {0};
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void *HAL_Malloc(uint32_t size);
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void HAL_Free(void *ptr);
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void HAL_Printf(const char *fmt, ...);
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int HAL_GetProductKey(char product_key[IOTX_PRODUCT_KEY_LEN + 1]);
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int HAL_GetDeviceName(char device_name[IOTX_DEVICE_NAME_LEN + 1]);
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int HAL_GetDeviceSecret(char device_secret[IOTX_DEVICE_SECRET_LEN]);
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uint64_t HAL_UptimeMs(void);
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int HAL_Snprintf(char *str, const int len, const char *fmt, ...);
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// AHT挂载的总线名字
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#define AHT10_I2C_BUS "i2c3"
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// AHT设备指针
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aht10_device_t Dev = RT_NULL;
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// Humi:湿度值,Temp:温度值
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float Humi, Temp;
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#define EXAMPLE_TRACE(fmt, ...) \
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do { \
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HAL_Printf("%s|%03d :: ", __func__, __LINE__); \
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HAL_Printf(fmt, ##__VA_ARGS__); \
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HAL_Printf("%s", "\r\n"); \
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} while(0)
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static void example_message_arrive(void *pcontext, void *pclient, iotx_mqtt_event_msg_pt msg)
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{
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iotx_mqtt_topic_info_t *topic_info = (iotx_mqtt_topic_info_pt) msg->msg;
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switch (msg->event_type) {
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case IOTX_MQTT_EVENT_PUBLISH_RECEIVED:
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/* print topic name and topic message */
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EXAMPLE_TRACE("Message Arrived:");
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EXAMPLE_TRACE("Topic : %.*s", topic_info->topic_len, topic_info->ptopic);
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EXAMPLE_TRACE("Payload: %.*s", topic_info->payload_len, topic_info->payload);
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EXAMPLE_TRACE("\n");
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break;
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default:
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break;
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}
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}
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static int example_subscribe(void *handle)
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{
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int res = 0;
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const char *fmt = "/%s/%s/user/get";
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char *topic = NULL;
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int topic_len = 0;
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topic_len = strlen(fmt) + strlen(DEMO_PRODUCT_KEY) + strlen(DEMO_DEVICE_NAME) + 1;
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topic = HAL_Malloc(topic_len);
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if (topic == NULL) {
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EXAMPLE_TRACE("memory not enough");
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return -1;
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}
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memset(topic, 0, topic_len);
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HAL_Snprintf(topic, topic_len, fmt, DEMO_PRODUCT_KEY, DEMO_DEVICE_NAME);
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res = IOT_MQTT_Subscribe(handle, topic, IOTX_MQTT_QOS0, example_message_arrive, NULL);
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if (res < 0) {
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EXAMPLE_TRACE("subscribe failed");
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HAL_Free(topic);
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return -1;
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}
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HAL_Free(topic);
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return 0;
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}
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char tmp[256];
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void tmp_payload(void)
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{
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// 读取温湿度值
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Humi = aht10_read_humidity(Dev);
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Temp = aht10_read_temperature(Dev);
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sprintf(tmp, "{\"params\":{\"temperature\":%.2f,\"humidity\":%.2f}}", Temp, Humi);
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rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,tmp);
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return;
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}
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static int example_publish(void *handle)
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{
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tmp_payload();
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int res = 0;
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const char *fmt = "/sys/%s/%s/thing/event/property/post";
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// /k1lyriw1yGj/${deviceName}/user/get
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char *topic = NULL;
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int topic_len = 0;
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char *payload = tmp;
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// strcpy(payload,tmp_payload());
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rt_kprintf("payload:%s\n",payload);
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topic_len = strlen(fmt) + strlen(DEMO_PRODUCT_KEY) + strlen(DEMO_DEVICE_NAME) + 1;
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topic = HAL_Malloc(topic_len);
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if (topic == NULL) {
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EXAMPLE_TRACE("memory not enough");
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return -1;
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}
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memset(topic, 0, topic_len);
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HAL_Snprintf(topic, topic_len, fmt, DEMO_PRODUCT_KEY, DEMO_DEVICE_NAME);
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res = IOT_MQTT_Publish_Simple(0, topic, IOTX_MQTT_QOS0, payload, strlen(payload));
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if (res < 0) {
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EXAMPLE_TRACE("publish failed, res = %d", res);
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HAL_Free(topic);
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return -1;
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}
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HAL_Free(topic);
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return 0;
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}
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static void example_event_handle(void *pcontext, void *pclient, iotx_mqtt_event_msg_pt msg)
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{
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EXAMPLE_TRACE("msg->event_type : %d", msg->event_type);
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}
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static void mqtt_example_main(void *parameter)
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{
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void *pclient = NULL;
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int res = 0;
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int loop_cnt = 0;
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iotx_mqtt_param_t mqtt_params;
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HAL_GetProductKey(DEMO_PRODUCT_KEY);
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HAL_GetDeviceName(DEMO_DEVICE_NAME);
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HAL_GetDeviceSecret(DEMO_DEVICE_SECRET);
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EXAMPLE_TRACE("mqtt example");
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memset(&mqtt_params, 0x0, sizeof(mqtt_params));
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mqtt_params.handle_event.h_fp = example_event_handle;
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pclient = IOT_MQTT_Construct(&mqtt_params);
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if (NULL == pclient) {
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EXAMPLE_TRACE("MQTT construct failed");
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return ;
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}
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res = example_subscribe(pclient);
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if (res < 0) {
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IOT_MQTT_Destroy(&pclient);
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return ;
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}
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while (1) {
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if (0 == loop_cnt % 20) {
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example_publish(pclient);
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}
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IOT_MQTT_Yield(pclient, 200);
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loop_cnt += 1;
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}
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return ;
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}
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#define THREAD_PRIORITY 25
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#define THREAD_STACK_SIZE 4096
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#define THREAD_TIMESLICE 5
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rt_thread_t MQTT_Thread = RT_NULL;
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void MQTT_Creat_Thread(void)
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{
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// 初始化设备
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Dev = aht10_init(AHT10_I2C_BUS);
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if (Dev == RT_NULL)
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{
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rt_kprintf("AHT10_init Fail");
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return;
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}
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MQTT_Thread = rt_thread_create("MTQQ_Thread", mqtt_example_main, RT_NULL, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
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if (MQTT_Thread != RT_NULL)
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{
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rt_thread_startup(MQTT_Thread);
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}
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else
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{
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rt_kprintf("MQTT Thread Create Failed!\n");
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}
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}
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MSH_CMD_EXPORT(MQTT_Creat_Thread, create a MQTT_Thread);
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```
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[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)
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