Rev Author Line No. Line
960 jacho 1  
2 //Meteorologicka cast
3 #define VERSION "0.1"
4 #define AUTOR "Jan Chroust"
5 #define DATE "15.4.2013"
6  
7 #include <main.h>
8 #include <math.h>
9 #include <string.h>
10  
11 #include "SHT25.h"
12 #include "MPL3115.h"
13 #include "HMC5883L.h"
14  
15 #define SEND_DELAY 50 // Cas mezi dvema znaky na RS232
16  
17 char VER[4]=VERSION;
18  
19 unsigned int16 timer0_overflow_count;
20 float anemo=0;
21  
22  
23  
24 #int_TIMER1
25 void TIMER1_isr(void)
26 {
27 // 32.768 kHz krystal pro timer1 oscilátor
28 anemo = ((timer0_overflow_count * 0xFF) + get_timer0())/(32768.0/0xFFFF); // pocet pulzu za 1s
29 anemo = anemo / 2; //pocet otacek za sekundu
30  
31 timer0_overflow_count=0; //nulovani
32 set_timer0(0);
33 set_timer1(0);
34  
35 }
36  
37 #int_TIMER0 //pro preteceni èítaèe pùlzù od anemometru (RA4)
38 void TIMER0_isr(void)
39 {
40 timer0_overflow_count++;
41 }
42  
43  
44 float azimut (void) //vypocet azimutu smeru vetru
45 {
46 signed int16 X,Y,Z;
47 X= mag_readX();
48 Y= mag_readY();
49 Z= mag_readZ();
50  
51 float a, b;
52 a=(float)Y/X;
53 b=atan(a);
54 b = (b/3.14)*180;
55 b=abs(b);
56  
57 if(X==0) //osetreni proti deleni 0
58 {
59 if(Y>0)
60 {
61 b=90;
62 }
63 else
64 {
65 b=270;
66 }
67 }
68 else
69 {
70 if(X>0)
71 {
72 if(Y>=0)
73 {
74 b=180+b;
75  
76 }
77 else
78 {
79 b=180-b;
80  
81 }
82 }
83 else
84 {
85 if(Y>=0)
86 {
87 b=360-b;
88  
89 }
90 else
91 {
92 b=b;
93  
94 }
95 }
96  
97 }
98  
99 return b;
100  
101 }
102  
103  
104  
105  
106  
107  
108 void uvitani(void) // uvodni zprava
109 {
110 printf("\r\n\r\n# Meteorologicka stanice %s (C) 2013 www.mlab.cz \r\n",VERSION);
111 printf("\r\n# Autor: %s Posledni uprava: %s \r\n",AUTOR, DATE);// Welcome message
112 printf("# ver poradi ");
113 printf("altimet_t[°C] altimet_a[m] altimet_p[Pa] ");
114 printf("sht_t[°C] sht_h[%%] Anemo[m/s]check\r\n\r\n");
115 }
116  
117 void main()
118 {
119 setup_wdt(WDT_2304MS); //nastavení resetu pokud nedojde v cas k jeho vynulovani
120 restart_wdt(); //---WDT
121 setup_adc_ports(NO_ANALOGS|VSS_VDD);
122 setup_adc(ADC_CLOCK_DIV_2);
123 setup_spi(SPI_SS_DISABLED);
124 setup_timer_0(RTCC_EXT_L_TO_H|RTCC_DIV_1);
125 setup_timer_1(T1_EXTERNAL|T1_DIV_BY_1|T1_CLK_OUT);
126 setup_timer_2(T2_DISABLED,0,1);
127 setup_ccp1(CCP_OFF);
128 setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard
129  
130  
131 float altimet_t; //teplota z MPL3115
132 float altimet_p; //tlak z MPL3115
133 float altimet_a; //vyska z MPL3115
134 float sht25_t; //teplota z SHT25
135 float sht25_h; //relativni vlhkost z SHT25
136 float smer_v; //smer vetru
137  
138 unsigned int16 poradi=0; //cislo vzorku
139 unsigned int8 sht_config;
140  
141 //nastaveni SHT25
142 SHT25_soft_reset();
143 sht_config = SHT25_RH12_T14 | SHT25_HEATER_OFF; //vypnuti topeni v SHT25
144 SHT25_setup(sht_config);
145  
146 //nastavení pøerušení pro anemometr
147 enable_interrupts(INT_TIMER1);
148 enable_interrupts(INT_TIMER0);
149 enable_interrupts(GLOBAL);
150 restart_wdt(); //---WDT
151  
152 uvitani();
153 set_mag(); //nastaveni magnetometru pro smer vetru
154  
155 // vynulovani promenych pro anemometr
156 set_timer0(0);
157 set_timer1(0);
158 timer0_overflow_count=0;
159 anemo=0;
160  
161 restart_wdt(); //---WDT
162  
163 while(TRUE)
164 {
165 char output[12]; // vystupni zasobnik
166 int8 j; // ukazatel na retezec
167 int8 check=0; // Checksum is calculated between '$' and '*'
168  
169  
170 mpl3115_setP(); //nastaveni pro tlak a teplotu
171 delay_ms (500);
172 altimet_t=mpl3115_T();
173 altimet_p=mpl3115_P();
174  
175 mpl3115_setA(); //nastaveni pro vysku a teplotu
176 delay_ms (500);
177 altimet_a=mpl3115_A();
178  
179 sht25_t=SHT25_get_temp(); //mereni hodnot z SHT25
180 sht25_h=SHT25_get_hum();
181  
182 smer_v=azimut(); //vrati azimut aktualniho smeru vetru
183  
184  
185 delay_us(SEND_DELAY);
186 putc('$');
187 delay_us(SEND_DELAY);
188 sprintf(output,"MST%s \0",VER);
189 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
190 sprintf(output,"%4.0Lu \0", poradi);
191 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
192 sprintf(output,"%6.2f \0", altimet_t );
193 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
194 sprintf(output,"%7.2f \0", altimet_a);
195 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
196 sprintf(output,"%9.2f \0", altimet_p);
197 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
198 sprintf(output,"%6.2f \0", sht25_t);
199 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
200 sprintf(output,"%6.2f \0", sht25_h);
201 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
202 sprintf(output,"%6.2f \0", smer_v);
203 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
204 sprintf(output,"%5.2f \0", anemo);
205 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j]); check^=output[j++]; }
206 sprintf(output,"*%X\r\n\0", check);
207 j=0; while(output[j]!=0) { delay_us(SEND_DELAY); putc(output[j++]); }
208 delay_us(SEND_DELAY);
209  
210 poradi++;
211 restart_wdt();
212 }
213  
214 }
215  
216  
217