Diff: main.cpp

Revision:

0:c105fad1f12b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Aug 24 17:02:12 2017 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#define size 14
+Serial pc(USBTX,USBRX);
+Serial sensor(PA_9,PA_10);
+int commend[3] = {0xA5,0x52,0xF7 };
+char buf[size];
+int Lux,Temp,Preesure,Hum,Height;
+void judgement_data(char buf[]){
+    int i=0;
+    if(buf[i++]== 0x5A){
+        //pc.printf("first_step\n");
+        if(buf[i++]== 0x5A){
+            //pc.printf("second_step\n");
+           //i++;//go to data type
+            if(buf[i] == 0x15){
+                pc.printf("Lux type\n");
+                i++;//04
+                Lux = ((buf[i+1]<<24) | (buf[i+2]<<16) | (buf[i+3]<<8) | buf[i+4])/100;
+                //Lux = (0x00<<24) | (0x00<<16) | (0xFE<<8) | 0x40;//test
+                pc.printf("Lux = %d\n", Lux);
+            }else if(buf[i] == 0x45){
+                pc.printf("temp type\n");
+                i++;//0A
+                Temp = ((buf[i+1]<<8)|(buf[i+2]))/100;
+                Preesure = ((buf[i+3]<<24)|(buf[i+4]<<16)|(buf[i+5]<<8)|(buf[i+6]))/100;
+                Hum = ((buf[i+7]<<8)|(buf[i+8]))/100;
+                Height = ((buf[i+9]<<8)|(buf[i+10]));
+                pc.printf("Temp = %d\n", Temp);
+                pc.printf("Preesure = %d\n", Preesure);
+                pc.printf("Hum = %d\n", Hum);
+                pc.printf("Height = %d\n", Height);
+            }
+        }
+    }
+}
+
+int main(){
+    pc.baud(9600);
+    //pc.printf("testing use serial port\n");
+    while(1){
+        for(int i=0;i<3;i++){
+            pc.putc(commend[i]);
+            sensor.putc(commend[i]);
+        }
+         
+        for(int i=0;i<size;i++){
+            buf[i] = sensor.getc();  
+            pc.putc(buf[i]);
+        }
+        pc.printf("\n");//enter
+        judgement_data(buf);
+        wait(3);
+    }
+}
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