Rev Author Line No. Line
1597 kakl 1 /**** IR Mrakomer 4 ****/
2 #define VERSION "4.1"
3 #define ID "$Id: irmrak4.c 1597 2010-08-25 19:47:58Z kakl $"
4  
5 #include "irmrak4.h"
6  
7 #bit CREN = 0x18.4 // USART registers
8 #bit SPEN = 0x18.7
9 #bit OERR = 0x18.1
10 #bit FERR = 0x18.2
11  
12 #include <string.h>
13  
14 #CASE // Case sensitive compiler
15  
16 #define MAXHEAT 20 // Number of cycles for heating
17 #define MAXOPEN 20 // Number of cycles for dome open
18 #define MEASURE_DELAY 6000 // Delay to a next measurement
19 #define RESPONSE_DELAY 100 // Reaction time after receiving a command
20 #define SAFETY_COUNT 90 // Time of one emergency cycle
21 #define SEND_DELAY 50 // Time between two characters on RS232
22  
23 #define DOME PIN_B4 // Dome controll port
24 #define HEATING PIN_B3 // Heating for defrosting
25  
26  
27 char VER[4]=VERSION; // Buffer for concatenate of a version string
28  
29 int8 heat; // Status variables
30 int8 open;
31  
32 inline void toggle_dome(void) // Wire exercise
33 {
34 if (open>0)
35 {output_toggle(DOME);} // Toggle = Open Dome
36 else
37 {output_high(DOME);} // Do not toggle = Close Dome
38 }
39  
40 void delay(int16 cycles) // Wire exercise with delay
41 {
42 int16 i;
43  
44 for(i=0; i<cycles; i++) {toggle_dome(); delay_us(100);}
45 }
46  
47 void welcome(void) // Welcome message
48 {
49 char REV[50]=ID; // Buffer for concatenate of a version string
50  
51 if (REV[strlen(REV)-1]=='$') REV[strlen(REV)-1]=0;
52 printf("\n\r\n\r# Mrakomer %s (C) 2007 KAKL\n\r",VER); // Welcome message
53 printf("#%s\n\r",&REV[4]);
54 printf("#\n\r");
55 printf("# h - Switch On Heating for 20s.\n\r");
56 printf("# c - Need Colder. Switch Off Heating.\n\r");
57 printf("# o - Open the Dome for 20s.\n\r");
58 printf("# l - Lock the Dome.\n\r");
59 printf("# x - Open the Dome and switch On Heating.\n\r");
60 printf("# i - Print this Information.\n\r");
61 printf("# r - Repeat measure every second.\n\r");
62 printf("# s - Single measure.\n\r");
63 printf("# u - Update firmware. Go to the Boot Loader.\n\r");
64 printf("#\n\r");
65 printf("# <sequence> <ambient[1/100 C]> <ambient[1/100 C]> <sky[1/100 C]> ");
66 printf("<heating[s]> <dome[s]> <check>\n\r\n\r");
67 //---WDT
68 restart_wdt();
69 }
70  
71  
72 #include "smb.c" // System Management Bus driver
73  
74  
75 // Read sensor's RAM
76 // Returns temperature in °K
77 int16 ReadTemp(int8 addr, int8 select)
78 {
79 unsigned char arr[6]; // Buffer for the sent bytes
80 int8 crc; // Readed CRC
81 int16 temp; // Readed temperature
82  
83 addr<<=1;
84  
85 SMB_STOP_bit(); //If slave send NACK stop comunication
86 SMB_START_bit(); //Start condition
87 SMB_TX_byte(addr);
88 SMB_TX_byte(RAM_Access|select);
89 SMB_START_bit(); //Repeated Start condition
90 SMB_TX_byte(addr);
91 arr[2]=SMB_RX_byte(ACK); //Read low data,master must send ACK
92 arr[1]=SMB_RX_byte(ACK); //Read high data,master must send ACK
93 temp=make16(arr[1],arr[2]);
94 crc=SMB_RX_byte(NACK); //Read PEC byte, master must send NACK
95 SMB_STOP_bit(); //Stop condition
96  
97 arr[5]=addr;
98 arr[4]=RAM_Access|select;
99 arr[3]=addr;
100 arr[0]=0;
101 if (crc != PEC_calculation(arr)) temp=0; // Calculate and check CRC
102  
103 return temp;
104 }
105  
106  
107 /*-------------------------------- MAIN --------------------------------------*/
108 void main()
109 {
110 unsigned int16 seq, temp, tempa;
111 signed int16 ta, to1, to2;
112 int8 safety_counter;
113 int1 repeat;
114  
115 output_high(DOME); // Close Dome
116 output_low(HEATING); // Heating off
117  
118 delay_ms(1000);
119 restart_wdt();
120  
121 seq=0; // Variables initiation
122 heat=0;
123 open=0;
124 repeat=TRUE;
125  
126 welcome();
127  
128 tempa=ReadTemp(SA, RAM_Tamb); // Dummy read
129 temp=ReadTemp(SA, RAM_Tobj1);
130  
131 delay_ms(1000);
132 //---WDT
133 restart_wdt();
134  
135 while(TRUE) // Main Loop
136 {
137 safety_counter=SAFETY_COUNT; // Heating and Dome Count Down
138 do
139 {
140 if (safety_counter<SAFETY_COUNT) safety_counter++;
141  
142 delay(RESPONSE_DELAY);
143  
144 if (safety_counter>=SAFETY_COUNT)
145 {
146 if (heat>0) heat--;
147 if (open>0) open--;
148  
149 if (heat>0) { output_high(HEATING); } else { output_low(HEATING); }
150  
151 safety_counter=0;
152 //---WDT
153 restart_wdt();
154 }
155 } while (!kbhit()&&!repeat);
156  
157 //---WDT
158 restart_wdt();
159 { // Retrieve command
160 char ch='k';
161  
162 if(kbhit()) ch=getc();
163  
164 switch (ch)
165 {
166 case 'h':
167 heat=MAXHEAT; // Need heating
168 break;
169  
170 case 'c':
171 heat=0; // Need colder
172 break;
173  
174 case 'o':
175 open=MAXOPEN; // Open the dome
176 break;
177  
178 case 'x':
179 open=MAXOPEN; // Open the dome
180 heat=MAXHEAT; // Need heating
181 break;
182  
183 case 'l':
184 open=0; // Lock the dome
185 break;
186  
187 case 'i':
188 if (open==0) welcome(); // Information about version, etc...
189 break; // Only when dome is closed
190  
191 case 'r':
192 repeat=TRUE; // Repeated measure mode
193 break;
194  
195 case 's':
196 repeat=FALSE; // Single measure mode
197 break;
198  
199 case 'u':
200 reset_cpu(); // Update firmware
201 }
202 }
203 // while(kbhit()) getc(); // Flush USART buffer
204 CREN=0; CREN=1; // Reinitialise USART
205  
206 seq++; // Increment the number of measurement
207  
208 tempa=ReadTemp(SA, RAM_Tamb); // Read temperatures from sensor
209 ta=tempa*2-27315; // °K -> °C
210  
211 temp=ReadTemp(SA, RAM_Tobj1);
212 to1=temp*2-27315;
213 temp=ReadTemp(SA, RAM_Tobj2);
214 to2=temp*2-27315;
215  
216 { // printf
217 char output[8]; // Output buffer
218 int8 j; // String pointer
219 int8 check=0; // Checksum is calculated between '$' and '*'
220  
221 delay(SEND_DELAY);
222 putc('$');
223 delay(SEND_DELAY);
224 sprintf(output,"M%s ",VER);
225 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
226 sprintf(output,"%Lu ", seq);
227 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
228 sprintf(output,"%Ld ", ta);
229 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
230 sprintf(output,"%Ld ", to1);
231 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
232 sprintf(output,"%Ld ", to2);
233 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
234 sprintf(output,"%u ", heat);
235 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
236 sprintf(output,"%u ", open);
237 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
238 sprintf(output,"*%X\n\r\0", check);
239 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
240 delay(SEND_DELAY);
241 }
242  
243 //---WDT
244 restart_wdt();
245 delay(MEASURE_DELAY); // Delay to a next measurement
246 //---WDT
247 restart_wdt();
248 }
249 }
250  
251  
252 #include "dbloader.c" // Space reservation for the BootLoader