功能簡(jiǎn)介：

該項(xiàng)目是基于STM32F407-RT-SPARK開發(fā)板的智能花盆。通過(guò)溫濕度傳感器和光照傳感器，它能夠監(jiān)測(cè)花盆土壤當(dāng)前的溫濕度和附近的光照強(qiáng)度，并將這三項(xiàng)數(shù)據(jù)實(shí)時(shí)顯示在LCD屏上。它還能夠監(jiān)測(cè)花盆是否傾倒，監(jiān)測(cè)到花盆傾倒后，蜂鳴器會(huì)發(fā)出警報(bào)，直到按下按鍵，警報(bào)停止。同時(shí)，它還配備了rw007模塊，能將這些數(shù)據(jù)實(shí)時(shí)上傳到onenet平臺(tái)。

硬件框架：

使用到的模塊包括：LCD屏、溫濕度傳感器、光照傳感器、蜂鳴器、物理按鍵

圖一 硬件實(shí)物圖與使用到的模塊

圖二 硬件框架圖

軟件框架：

圖三 軟件框架圖

軟件模塊說(shuō)明及部分代碼：

1.六軸傳感器線程：

六軸傳感器模塊測(cè)量花盆的偏航角、橫滾角和俯仰角，并將測(cè)量數(shù)據(jù)發(fā)送給CPU進(jìn)行判斷，若花盆傾倒，記錄異常數(shù)據(jù)。

icm20608_device_t devvv = RT_NULL;
             rt_err_t result;
             devvv = icm20608_init(i2c_bus_namee);
             if (devvv == RT_NULL)
             {
             LOG_E("The sensor initializes failure");
             return 0;
             }
             else
             {
             LOG_D("The sensor initializes success");
             }
             /* 對(duì) icm20608 進(jìn) 行 零 值 校 準(zhǔn)： 采 樣 10 次， 求 取 平 均 值 作 為 零 值 */
             result = icm20608_calib_level(devvv, 10);
             if (result == RT_EOK)
             {
             LOG_D("The sensor calibrates success");
             LOG_D("accel_offset: X%6d Y%6d Z%6d", devvv- >accel_offset.x, devvv- >accel_offset.y, devvv- >accel_offset.z);
             }
             else
             {
             LOG_E("The sensor calibrates failure");
             icm20608_deinit(devvv);
             return 0;
             }
             rt_int16_t accel_x, accel_y, accel_z;
             /* 讀 取 三 軸 加 速 度 */
             result = icm20608_get_accel(devvv, &accel_x, &accel_y, &accel_z);
             if (result == RT_EOK)
             {
             LOG_D("current accelerometer: accel_x%6d, accel_y%6d, accel_z%6d",
             accel_x, accel_y, accel_z);
             }
             else
             {
             LOG_E("The sensor does not work");
             break;
             }

2.LCD顯示線程：

該線程初始化后會(huì)持續(xù)讀取溫度、濕度和光照數(shù)據(jù)，并將其實(shí)時(shí)顯示在LCD顯示屏上。

lcd_clear(WHITE);
lcd_set_color(WHITE, RED);
lcd_show_string(10, 0, 16, "Hello!");
lcd_set_color(WHITE, BLACK);
lcd_show_string(10, 26, 32, "Temperature:");
lcd_show_string(10, 90, 32, "Humidity:");
lcd_show_string(10, 160, 32, "Light:");
lcd_set_color(WHITE, BLUE);
lcd_show_num(30, 26+32, temperature, 2, 32);
lcd_show_string(65,26+32,32,"C");
lcd_show_num(30, 90+32, humidity, 2, 32);
lcd_show_string(65, 90+32, 32, "%");
lcd_show_num(30, 160+32, brightness, 2, 32);
lcd_show_string(80, 160+32, 32, "lux");

3.光強(qiáng)傳感器線程：

光強(qiáng)傳感器模塊將記錄光強(qiáng)數(shù)據(jù)，用于LCD顯示和云端顯示。

brightness = ap3216c_read_ambient_light(devv);
             LOG_D("current brightness: %d.%d(lux).", (int)brightness, ((int)(10 * brightness) % 10));

4.rw007線程（Onenet）：

讀取rw007模塊傳來(lái)的溫濕度數(shù)據(jù)、光照數(shù)據(jù)并存儲(chǔ)到云端以圖表方式進(jìn)行顯示；若傾倒角度數(shù)據(jù)異常，會(huì)在云端進(jìn)行報(bào)警。

int onenet_publish_digit(int argc, char **argv)
{
if (argc != 3)
{
LOG_E("onenet_publish [datastream_id] [value] - mqtt pulish digit data to OneNET.");
return -1;
}
if (onenet_mqtt_upload_digit(argv[1], atoi(argv[2])) < 0)
{
LOG_E("upload digit data has an error!n");
}
return 0;
}
int onenet_publish_string(int argc, char *argv)
{
if (argc != 3)
{
LOG_E("onenet_publish [datastream_id] [string] - mqtt pulish string data to OneNET.");
return -1;
}
if (onenet_mqtt_upload_string(argv[1], argv[2]) < 0)
{
LOG_E("upload string has an error!n");
}
return 0;
}
/ onenet mqtt command response callback function */
static void onenet_cmd_rsp_cb(uint8_t *recv_data, size_t recv_size, uint8_t **resp_data, size_t *resp_size)
{
char res_buf[] = { "cmd is received!n" };
LOG_D("recv data is %.sn", recv_size, recv_data);
/ user have to malloc memory for response data */
*resp_data = (uint8_t *) ONENET_MALLOC(strlen(res_buf));
strncpy((char *)*resp_data, res_buf, strlen(res_buf));
resp_size = strlen(res_buf);
}
/ set the onenet mqtt command response callback function */
int onenet_set_cmd_rsp(int argc, char *argv)
{ onenet_set_cmd_rsp_cb(onenet_cmd_rsp_cb);
return 0;
}
MSH_CMD_EXPORT(onenet_set_cmd_rsp, set cmd response function);
#endif / FINSH_USING_MSH */

5.溫濕度線程：

溫濕度傳感器模塊測(cè)量土壤的溫濕度，并記錄測(cè)量數(shù)據(jù)。

temperature=(int)temperature+(int)(temperature10)%10;
humidity=(int)humidity+(int)(humidity10)%10;
brightness=(int)brightness+(int)(brightness*10)%10;
rt_thread_mdelay(100);
onenet_mqtt_upload_digit("temperature", temperature);
rt_thread_mdelay(100);
onenet_mqtt_upload_digit("humidity", humidity);
rt_thread_mdelay(100);
onenet_mqtt_upload_digit("brightness", brightness);

6.蜂鳴器線程：

讀取六軸傳感器數(shù)據(jù)，并對(duì)花盆的傾倒?fàn)顟B(tài)進(jìn)行判斷。若花盆傾倒，蜂鳴器報(bào)警，可通過(guò)開發(fā)板上的按鍵關(guān)閉蜂鳴器。

/* 設(shè)置按鍵引腳為輸入模式 */
        rt_pin_mode(PIN_KEY1, PIN_MODE_INPUT_PULLUP);
        rt_pin_mode(PIN_WK_UP, PIN_MODE_INPUT_PULLUP);
        /* 設(shè)置蜂鳴器引腳為輸出模式 */
        rt_pin_mode(PIN_BEEP, PIN_MODE_OUTPUT);
        /* 設(shè)置按鍵中斷模式與中斷回調(diào)函數(shù) */
        rt_pin_attach_irq(PIN_KEY1, PIN_IRQ_MODE_FALLING, irq_callback, (void *) PIN_KEY1);
        rt_pin_attach_irq(PIN_WK_UP, PIN_IRQ_MODE_FALLING, irq_callback, (void *) PIN_WK_UP);
        /* 使能中斷 */
        rt_pin_irq_enable(PIN_KEY1, PIN_IRQ_ENABLE);
        rt_pin_irq_enable(PIN_WK_UP, PIN_IRQ_ENABLE);

int topple;
int X,Y,Z;
X=devvv->accel_offset.x;
Y=devvv->accel_offset.y;
Z=devvv->accel_offset.z;
if(abs(Y)<=10000){
topple=0;
rt_pin_write(PIN_BEEP,PIN_LOW);
LOG_D("KEY1 interrupt. beep off.");
}
else{
topple=1;
rt_pin_write(PIN_BEEP,PIN_HIGH);
LOG_D("WK_UP interrupt. beep on.");
break;
}

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