Diff: main.cpp

Revision:

0:82e30fd2f376

Child:

1:2fc8a8915250

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Aug 01 09:03:19 2016 +0000
@@ -0,0 +1,134 @@
+/*
+    Version: 1.00
+    Purpose: This example use mbed NXP LPC1769 
+             Using sensors:
+                -- PMS3003: forPM1.0, PM2.5, PM10 sensing
+                -- DHT22: for temperature and humidity
+             Using transfer module:
+                -- LoRa module: GIoT GL6509 (Gemtek LoRa)
+             Circuit diagram remind:
+                --DHT22: Data pin parallel to Vcc(use 5.1KΩ)
+                --Grove_LCD_RGB_Backlight: Sda pin and Scl pin parallel to Vcc(use 5.1KΩ) 
+
+*/
+
+#include "mbed.h"
+#include "DHT.h"
+#include "Grove_LCD_RGB_Backlight.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+Serial device(p28, p27); //tx, rx
+Serial lora(p13, p14); //tx, rx
+DHT dht22(p21, SEN51035P);
+Grove_LCD_RGB_Backlight rgbLCD(p9, p10);
+
+char buffer[24];
+int app_id = 15;
+char lora_trans[11];
+char gps_lat[] = "25.0227";
+char gps_lon[] = "121.3653";
+int fix_num = 15;
+int count = 1;
+int err ;
+unsigned short pm1;
+unsigned short pm25;
+unsigned short pm10;
+
+int main() {
+    wait(2);
+    device.baud(9600);
+    lora.baud(9600);
+    wait(1);
+    buffer[0] = 0x42;
+    buffer[1] = 0x4d;
+    while (1) {
+        while (device.getc() != 0x42) {
+            }
+            if (device.getc() == 0x4d) {
+                for (int i = 2; i <24; i++) {
+                    buffer[i] = device.getc();
+                    }
+                unsigned short calcsum = buffer[2] + buffer[3]+ buffer[4] + buffer[5] + buffer[6] + buffer[7] + buffer[8] + buffer[9] + buffer[10] + buffer[11] + buffer[12] + buffer[13] + buffer[14] + buffer[15] + buffer[16] + buffer[17] + buffer[18] + buffer[19] + buffer[20] + buffer[21];
+                unsigned short calcsum1 = (calcsum + 0x42 +0x4d);
+                unsigned short exptsum = (buffer[22]<<8) + buffer[23];
+                if( exptsum == calcsum1){
+                pm1 = buffer[10] + buffer[11];
+                pm25 = buffer[12] + buffer[13];
+                pm10 = buffer[14] + buffer[15];
+                }
+        }
+        wait(1);
+        do{
+        err = dht22.readData();
+        }while(err != 0);
+        float temp = dht22.ReadTemperature(CELCIUS);
+        float hum = dht22.ReadHumidity();
+        wait(0.5);
+            pc.printf("T: %.1f C \n", temp);
+            pc.printf("H: %.1f %% \n", hum);
+            pc.printf("pm1= %X ug/m3\n", pm1);
+            pc.printf("pm25= %X ug/m3\n", pm25);
+            pc.printf("pm10= %X ug/m3\n", pm10);
+            pc.printf("%i \n" ,count);
+            char lcd_h_buff[16];
+            char lcd_buff[12];
+            sprintf(lcd_h_buff, "T: %.1f H: %.1f" ,temp ,hum);
+            sprintf(lcd_buff, "PM25:%i PM10:%i" ,pm25 ,pm10);
+            rgbLCD.setRGB(0xff, 0xff, 0xff);
+            rgbLCD.clear();
+            rgbLCD.locate(0,0);
+            rgbLCD.print(lcd_h_buff);
+            rgbLCD.locate(0,1);
+            rgbLCD.print(lcd_buff);
+            wait(5);
+            
+        if(count==13&&temp!=0){
+            int temperatureLora = (int)((temp + 20) * 10);
+            int humiditylora = (int)(hum * 10);
+            unsigned char pm25lora = pm25;
+            unsigned char pm100Offset = pm10 - pm25;
+            float gps_lat_f = (float) atof(gps_lat);
+            float gps_lon_f = (float) atof(gps_lon);
+            gps_lat_f += 90;
+            gps_lon_f += 180;
+            int gps_lat_i = (int)(gps_lat_f * 10000);
+            int gps_lon_i = (int)(gps_lon_f * 10000);
+            unsigned char lat_D = (int) gps_lat_f;
+            float temp_lat_M = (gps_lat_f - lat_D) * 100;
+            unsigned char lat_M = (int) temp_lat_M;
+            unsigned char lat_S = (int) gps_lat_i % 100;
+            short lon_D = (int) gps_lon_f;
+            float temp_lon_M = (gps_lon_f - lon_D) * 100;
+            unsigned char lon_M = (int) temp_lon_M;
+            unsigned char lon_S = (int) gps_lon_i % 100;
+            unsigned char gps_fix = fix_num;
+            char buff[150];
+
+            lora_trans[0] = (app_id << 4) | (temperatureLora >> 6);
+            lora_trans[1] = (temperatureLora << 2) | (humiditylora >> 8);
+            lora_trans[2] = humiditylora;
+            // END FOR THE APP_ID, TEMPERATURE AND HUMIDITY
+            lora_trans[3] = pm25lora >> 3;
+            lora_trans[4] = (pm25lora << 5) | (pm100Offset >> 3);
+            // END FOR PM2.5    
+            lora_trans[5] = (pm100Offset << 5) | (lat_D >> 3);
+            lora_trans[6] = (lat_D << 5) | (lat_M >> 1);
+            lora_trans[7] = (lat_M << 7) | (lat_S << 1) | (lon_D >> 8);
+            lora_trans[8] = (unsigned char) lon_D;
+            lora_trans[9] = (lon_M << 2) | (lon_S >> 4);
+            lora_trans[10] = (lon_S << 4) | gps_fix;
+            // END FOR PM10 AND GPS
+            sprintf(buff, "AT+DTX=22,%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\r\n", lora_trans[0], lora_trans[1], lora_trans[2], lora_trans[3], lora_trans[4], lora_trans[5], lora_trans[6], lora_trans[7], lora_trans[8], lora_trans[9], lora_trans[10]);
+            lora.printf(buff);
+            pc.printf(buff);
+            count = 0;
+            rgbLCD.clear();
+            rgbLCD.locate(0,0);
+            rgbLCD.print("LoRa Send");
+            }
+            else if (count == 14){
+                count = 0;
+                }
+        count++;
+    }
+}