Diff: main.cpp

Revision:

3:08260b6b0828

Parent:

2:bc6e512b58ac

--- a/main.cpp	Tue Aug 16 10:05:12 2022 +0000
+++ b/main.cpp	Tue Aug 16 10:50:58 2022 +0000
@@ -1,3 +1,10 @@
+#define mC 261.626
+#define mD 293.665
+#define mE 329.628
+#define mF 349.228
+#define mG 391.995
+#define mA 440.000
+#define mB 493.883
 #include "mbed.h"
 #include "LPS.h"
 #include "HEPTA_CDH.h"
@@ -6,14 +13,23 @@
 Serial xbee(D1, D0); // tx, rx
 I2C i2c(D4,D5);
 LPS ps(i2c);
+DigitalOut sp1(A0);
 HEPTA_CDH cdh(PB_5, PB_4, PB_3, PA_8, "sd");
 Ticker press;
+Ticker sound;
 int i;
 int ct = 0;
 float pressure = 0;
 float altitude = 0;
 float temperature = 0;
 char cmd1,cmd2,cmd3;
+int oto = 0;
+float mm[]={mC*4,mD*4,mE*4,mF*4,mG*4,mA*4,mB*4,mC*8};   //timbre
+void tick(void)
+{
+    sp1.write(oto);
+    oto=!oto;
+}
 void pre() {
     xbee.printf("%.2f %.2f %.2f \r\n",pressure,altitude,temperature);
 }
@@ -21,7 +37,6 @@
     //Display from satellite to PC via xbee.
     pc.printf("settig start\r\n");
     xbee.printf("settig start\r\n");
-    
     //Create a file to save the data acquired from the sensor to a microSD card
     //Also, if there is no microSD card, this error statement will be displayed
     mkdir("/sd/mydir", 0777);
@@ -29,25 +44,20 @@
     if(fp == NULL) {
         error("Could not open file for write\r\n");
     }
-    
     //If there is no Barometric Pressure Sensors, this error statement will appear in teraterm
     if (!ps.init()){//2
         printf("Failed to autodetect pressure sensor!\r\n");
         while (1);
     }//2
     ps.enableDefault();
-    
     //Display "begin" in teraterm and save it to SDcard
     pc.printf("begin\r\n");
     xbee.printf("begin\r\n");
     fprintf(fp,"begin\r\n");
     for (;;) {//2
-        //if (pc.readable()) xbee.putc(pc.getc());
         if (xbee.readable()) {//3
             pc.putc(xbee.getc());
             cmd1 = xbee.getc();
-        //char cmd1 = xbee.getc();//cmd共有
-        
         //Input "m", the sensor data is displayed on the teraterm.
         //And the acquired data is saved to the SD card.
             if(cmd1 == 'm'){//4
@@ -55,12 +65,10 @@
                 fprintf(fp,"start\r\n");
                 xbee.printf("start\r\n");
                 t.start();
-                
                 cmd1 = '\0';
-                
-                pc.printf("p [mbar]\ta [m]\tdeg [C]\r\n");
-                xbee.printf("p [mbar]\ta [m]\tdeg [C]\r\n");
-                fprintf(fp,"p [mbar]\ta [m]\tdeg [C]\r\n");
+                pc.printf("p[mbar] a[m] deg[C]\r\n");
+                xbee.printf("p[mbar] a[m] deg[C]\r\n");
+                fprintf(fp,"p[mbar] a[m] deg[C]\r\n");
                 fclose(fp);
                 press.attach(&pre, 0.1);
                 //Save sensor acquisition data to SD card every 10 times
@@ -70,25 +78,40 @@
                         pressure = ps.readPressureMillibars();
                         altitude = ps.pressureToAltitudeMeters(pressure);
                         temperature = ps.readTemperatureC();
-                        fprintf(fp,"%d %.2f\t \t%.2f \t%.2f \r\n",ct,pressure,altitude,temperature);
+                        fprintf(fp,"%d %.2f %.2f %.2f\r\n",ct,pressure,altitude,temperature);
                         ct = ct + 1;
-                        //if (pc.readable()) xbee.putc(pc.getc());
                         if (xbee.readable()){//7
                             pc.putc(xbee.getc());
                             cmd2 = xbee.getc();
-                            //char cmd2 = xbee.getc();
-                            //xbee.printf("%c\r\n",cmd);
+                            //Input "n", The command finishes acquiring air pressure
                             if(cmd2 == 'n'){//8
                                 press.detach();
-                                pc.printf("end\r\n");
-                                pc.printf("time = %f",t.read());
+                                xbee.printf("end\r\n");
+                                xbee.printf("time = %f",t.read());
                                 fprintf(fp,"time = %f",t.read());
                                 t.stop();
                                 fclose(fp);
                                 cmd2 = '\0';
-                                return 0;
-                                            }//8
-                                        }//7
+                                while(1){//9
+                                    for(i=0;i < sizeof(mm)/sizeof(mm[0]);i++) {
+                                        sound.attach(&tick,1.0/mm[i]/2.0);  //If warning appear, ignore
+                                        wait(0.5f);
+                                        }//10
+                                        sound.detach();
+                                        i = 0;
+                                    if (xbee.readable()){//10
+                                        pc.putc(xbee.getc());
+                                        cmd3 = xbee.getc();
+                                        //Input "k", The command terminates the program.
+                                        if(cmd3 == 'k'){//11
+                                            pc.printf("end\r\n");
+                                            sound.detach();
+                                            //return 0;
+                                                    }//11
+                                                }//10
+                                            }//9
+                                        }//8
+                                    }//7
                         wait_us(1);
                     }//6
                     fclose(fp);