补充font data 小灯反转笔记
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Day5/README.md
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Day5/README.md
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@ -274,8 +274,102 @@ void WIFI_CS_PULL_DOWM(void)
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INIT_BOARD_EXPORT(WIFI_CS GET_PIN);
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```
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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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### 1. 使用AHT10软件包采集温湿度并上传到阿里云
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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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### 2. 将font分区给挂载上。在温湿度上传上传云端的同时,将数据同步放在文件系统处,
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文件名为:Data.txt;文件内容:
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> Temp:XX ; Humi:XX ; Count: 1(自上电起所采集的数据次数)
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Temp:XX ; Humi:XX ; Count: 2(自上电起所采集的数据次数)
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Temp:XX ; Humi:XX ; Count: 3(自上电起所采集的数据次数)
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在`drv_filesystem.c`中实现挂载font
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``` c
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fal_init();
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fal_blk_device_create("font");
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/* 创建目录 */
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ret = mkdir("/fal/test", 0x777);
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if (ret < 0)
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{
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/* 创建目录失败 */
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rt_kprintf("dir error!\n");
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}
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else
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{
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/* 创建目录成功 */
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rt_kprintf("mkdir ok!\n");
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}
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/* 挂载块设备"font"到 DFS 目录/fal/test中 */
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if (dfs_mount("font", "/fal/test", "elm", 0, 0) == 0)
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{
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LOG_I("font initialized!");
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}
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else
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{
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dfs_mkfs("elm", "font");
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if (dfs_mount("font", "/fal/test", "elm", 0, 0) == 0)
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{
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LOG_I("font initialized!");
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}
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else
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{
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LOG_E("Failed to initialize font!");
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LOG_D("You should create a filesystem(font) on the block device first!");
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}
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}
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```
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接着文件末尾添加数据(Data.txt)
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![alt text](image-7.png)
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``` c
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void make_file()
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{
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//文件描述符
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int fd;
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//用只写方式打开文件,如果没有该文件,则创建一个文件
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fd = open("/fal/test/Data.txt", O_WRONLY | O_CREAT | O_APPEND); //和原来相比,只是把O_TRUNC参数更改为O_APPEND,即更改为打开后,如果再进行写入,将从文件的末尾位置开始写。
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// rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,String);
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//如果打开成功
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if (fd >= 0)
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{
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//写入文件
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write(fd, tmp, sizeof(tmp));
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// rt_kprintf("Write done.\n");
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//关闭文件
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close(fd);
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}
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else
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{
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rt_kprintf("File Open Fail.\n");
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}
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return;
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}
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```
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### 3. 利用云端给开发板发送指令然后实现小灯翻转
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```c
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rt_pin_mode(GPIO_LED_R, PIN_MODE_OUTPUT);
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//topic_info->payload 为发送的内容,可以据此设置命令
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if(rt_pin_read(GPIO_LED_R) == PIN_HIGH)
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{
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// rt_kprintf("LED_R should be ON\n");
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rt_pin_write(GPIO_LED_R, PIN_LOW);
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}
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else
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{
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// rt_kprintf("LED_R should be OFF\n");
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rt_pin_write(GPIO_LED_R, PIN_HIGH);
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}
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```
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### 完整代码
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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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@ -285,6 +379,7 @@ INIT_BOARD_EXPORT(WIFI_CS GET_PIN);
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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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#include <dfs_posix.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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@ -299,6 +394,13 @@ 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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//定义接受文件内容的缓冲区
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char buffer[1026] = {};
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char tmp[1026];
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#define GPIO_LED_B GET_PIN(F,11)
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#define GPIO_LED_R GET_PIN(F,12)
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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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@ -324,6 +426,18 @@ static void example_message_arrive(void *pcontext, void *pclient, iotx_mqtt_even
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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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rt_pin_mode(GPIO_LED_R, PIN_MODE_OUTPUT);
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//topic_info->payload 为发送的内容,可以据此设置命令
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if(rt_pin_read(GPIO_LED_R) == PIN_HIGH)
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{
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// rt_kprintf("LED_R should be ON\n");
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rt_pin_write(GPIO_LED_R, PIN_LOW);
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}
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else
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{
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// rt_kprintf("LED_R should be OFF\n");
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rt_pin_write(GPIO_LED_R, PIN_HIGH);
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}
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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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@ -360,14 +474,44 @@ static int example_subscribe(void *handle)
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return 0;
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}
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char tmp[256];
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void make_file()
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{
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//文件描述符
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int fd;
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//用只写方式打开文件,如果没有该文件,则创建一个文件
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fd = open("/fal/test/Data.txt", O_WRONLY | O_CREAT | O_APPEND); //和原来相比,只是把O_TRUNC参数更改为O_APPEND,即更改为打开后,如果再进行写入,将从文件的末尾位置开始写。
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// rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,String);
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//如果打开成功
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if (fd >= 0)
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{
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//写入文件
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write(fd, tmp, sizeof(tmp));
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// rt_kprintf("Write done.\n");
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//关闭文件
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close(fd);
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}
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else
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{
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rt_kprintf("File Open Fail.\n");
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}
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return;
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}
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int cnt = 0;
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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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memset(tmp, 0, sizeof(tmp));
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sprintf(tmp, "Temp: %.1f;Humi: %.1f;Count: %d\n", Temp, Humi,++cnt);
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// rt_kprintf("\n%f %f tmp:%s\n",Humi,Temp,tmp);
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make_file();
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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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@ -382,7 +526,7 @@ static int example_publish(void *handle)
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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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// 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("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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