Rev Author Line No. Line
1274 kakl 1 /**** IR Mrakomer 4 ****/
2 #define VERSION "4.0"
1277 kakl 3 #define ID "$Id: irmrak4.c 1300 2009-01-17 08:41:49Z kakl $"
1293 kakl 4  
1274 kakl 5 #include "irmrak4.h"
6  
1293 kakl 7 #bit CREN = 0x18.4 // USART registers
8 #bit SPEN = 0x18.7
9 #bit OERR = 0x18.1
10 #bit FERR = 0x18.2
11  
12 #include <string.h>
13  
1289 kakl 14 #CASE // Case sensitive compiler
15  
1280 kakl 16 #define MAXHEAT 20 // Number of cycles for heating
17 #define MAXOPEN 20 // Number of cycles for dome open
1287 kakl 18 #define MEASURE_DELAY 6000 // Delay to a next measurement
1280 kakl 19 #define RESPONSE_DELAY 100 // Reaction time after receiving a command
1287 kakl 20 #define SAFETY_COUNT 90 // Time of one emergency cycle
1280 kakl 21 #define SEND_DELAY 50 // Time between two characters on RS232
1275 kakl 22  
1274 kakl 23 #define DOME PIN_B4 // Dome controll port
24 #define HEATING PIN_B3 // Heating for defrosting
25  
26  
1280 kakl 27 char VER[4]=VERSION; // Buffer for concatenate of a version string
1274 kakl 28  
1280 kakl 29 int8 heat; // Status variables
1274 kakl 30 int8 open;
31  
1284 kakl 32 inline void toggle_dome(void) // Wire exercise
1275 kakl 33 {
34 if (open>0)
1285 kakl 35 {output_toggle(DOME);} // Toggle = Open Dome
36 else
37 {output_high(DOME);} // Do not toggle = Close Dome
1275 kakl 38 }
1274 kakl 39  
1284 kakl 40 void delay(int16 cycles) // Wire exercise with delay
1274 kakl 41 {
1275 kakl 42 int16 i;
1278 kakl 43  
1275 kakl 44 for(i=0; i<cycles; i++) {toggle_dome(); delay_us(100);}
45 }
1274 kakl 46  
1284 kakl 47 void welcome(void) // Welcome message
48 {
1293 kakl 49 char REV[50]=ID; // Buffer for concatenate of a version string
50  
51 if (REV[strlen(REV)-1]=='$') REV[strlen(REV)-1]=0;
52 printf("\n\r# Mrakomer %s (C) 2007 KAKL\n\r",VER); // Welcome message
53 printf("#%s\n\r",&REV[4]);
54 printf("# <sequence> <ambient[1/100 C]> <sky[1/100 C]> ");
55 printf("<heating[s]> <dome[s]> <check>\n\r\n\r");
1284 kakl 56 }
1274 kakl 57  
58  
1284 kakl 59 #include "smb.c" // System Management Bus driver
1274 kakl 60  
1284 kakl 61  
1293 kakl 62 // Read sensor's RAM
1280 kakl 63 // Returns temperature in °K
1281 kakl 64 int16 ReadTemp(int8 addr, int8 select)
1274 kakl 65 {
66 unsigned char arr[6]; // Buffer for the sent bytes
67 int8 crc; // Readed CRC
68 int16 temp; // Readed temperature
69  
1275 kakl 70 addr<<=1;
71  
1284 kakl 72 SMB_STOP_bit(); //If slave send NACK stop comunication
73 SMB_START_bit(); //Start condition
1275 kakl 74 SMB_TX_byte(addr);
75 SMB_TX_byte(RAM_Access|select);
1284 kakl 76 SMB_START_bit(); //Repeated Start condition
1275 kakl 77 SMB_TX_byte(addr);
1284 kakl 78 arr[2]=SMB_RX_byte(ACK); //Read low data,master must send ACK
79 arr[1]=SMB_RX_byte(ACK); //Read high data,master must send ACK
1289 kakl 80 temp=make16(arr[1],arr[2]);
1284 kakl 81 crc=SMB_RX_byte(NACK); //Read PEC byte, master must send NACK
82 SMB_STOP_bit(); //Stop condition
1274 kakl 83  
84 arr[5]=addr;
85 arr[4]=RAM_Access|select;
86 arr[3]=addr;
87 arr[0]=0;
88 if (crc != PEC_calculation(arr)) temp=0; // Calculate and check CRC
89  
90 return temp;
91 }
92  
1298 kakl 93  
94 /*-------------------------------- MAIN --------------------------------------*/
1300 kakl 95 void main()
1274 kakl 96 {
1280 kakl 97 unsigned int16 seq, temp, tempa;
1274 kakl 98 signed int16 ta, to;
1280 kakl 99 int8 safety_counter;
1288 kakl 100 int1 repeat;
1274 kakl 101  
1285 kakl 102 output_high(DOME); // Close Dome
1274 kakl 103 output_low(HEATING); // Heating off
104  
105 delay_ms(1000);
106 restart_wdt();
1284 kakl 107  
1285 kakl 108 seq=0; // Variables initiation
109 heat=0;
110 open=0;
1291 kakl 111 repeat=TRUE;
1289 kakl 112  
1284 kakl 113 welcome();
1285 kakl 114  
1274 kakl 115 tempa=ReadTemp(SA, RAM_Tamb); // Dummy read
116 temp=ReadTemp(SA, RAM_Tobj1);
117  
1286 kakl 118 delay_ms(1000);
1280 kakl 119 //---WDT
1274 kakl 120 restart_wdt();
121  
1284 kakl 122 while(TRUE) // Main Loop
1274 kakl 123 {
1284 kakl 124 safety_counter=SAFETY_COUNT; // Heating and Dome Count Down
1278 kakl 125 do
1274 kakl 126 {
1280 kakl 127 if (safety_counter<SAFETY_COUNT) safety_counter++;
1274 kakl 128  
1280 kakl 129 delay(RESPONSE_DELAY);
130  
131 if (safety_counter>=SAFETY_COUNT)
132 {
1288 kakl 133 if (heat>0) heat--;
1280 kakl 134 if (open>0) open--;
135  
1290 kakl 136 if (heat>0) { output_high(HEATING); } else { output_low(HEATING); }
137  
1280 kakl 138 safety_counter=0;
139 //---WDT
140 restart_wdt();
141 }
1288 kakl 142 } while (!kbhit()&&!repeat);
1285 kakl 143  
1280 kakl 144 //---WDT
145 restart_wdt();
1284 kakl 146 { // Retrieve command
1288 kakl 147 char ch='k';
1278 kakl 148  
1288 kakl 149 if(kbhit()) ch=getc();
1278 kakl 150  
1274 kakl 151 switch (ch)
152 {
153 case 'h':
1280 kakl 154 heat=MAXHEAT; // Need heating
1274 kakl 155 break;
1278 kakl 156  
1274 kakl 157 case 'c':
1280 kakl 158 heat=0; // Need colder
1274 kakl 159 break;
1278 kakl 160  
1274 kakl 161 case 'o':
162 open=MAXOPEN; // Open the dome
163 break;
1278 kakl 164  
1284 kakl 165 case 'x':
166 open=MAXOPEN; // Open the dome
167 heat=MAXHEAT; // Need heating
168 break;
169  
1274 kakl 170 case 'l':
171 open=0; // Lock the dome
172 break;
1284 kakl 173  
174 case 'i':
1287 kakl 175 if (open==0) welcome(); // Information about version, etc...
176 break; // Only when dome is closed
1288 kakl 177  
178 case 'r':
1292 kakl 179 repeat=TRUE; // Repeated measure mode
1288 kakl 180 break;
181  
182 case 's':
183 repeat=FALSE; // Single measure mode
184 break;
1293 kakl 185  
186 case 'u':
1300 kakl 187 reset_cpu(); // Update firmware
1274 kakl 188 }
189 }
1288 kakl 190 // while(kbhit()) getc(); // Flush USART buffer
191 CREN=0; CREN=1; // Reinitialise USART
1274 kakl 192  
1280 kakl 193 seq++; // Increment the number of measurement
1274 kakl 194  
195 tempa=ReadTemp(SA, RAM_Tamb); // Read temperatures from sensor
196 temp=ReadTemp(SA, RAM_Tobj1);
197  
198 ta=tempa*2-27315; // °K -> °C
199 to=temp*2-27315;
200  
201 { // printf
1284 kakl 202 char output[8]; // Output buffer
203 int8 j; // String pointer
1293 kakl 204 int8 check=0; // Checksum is calculated between '$' and '*'
1278 kakl 205  
1282 kakl 206 delay(SEND_DELAY);
1293 kakl 207 putc('$');
208 delay(SEND_DELAY);
209 sprintf(output,"M%s ",VER);
210 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
211 sprintf(output,"%Lu ", seq);
212 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
1282 kakl 213 sprintf(output,"%Ld ", ta);
1293 kakl 214 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
1282 kakl 215 sprintf(output,"%Ld ", to);
1293 kakl 216 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
1283 kakl 217 sprintf(output,"%u ", heat);
1293 kakl 218 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
219 sprintf(output,"%u ", open);
220 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j]); check^=output[j++]; }
221 sprintf(output,"*%X\n\r\0", check);
1282 kakl 222 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
1293 kakl 223 delay(SEND_DELAY);
1274 kakl 224 }
1280 kakl 225  
226 delay(MEASURE_DELAY); // Delay to a next measurement
227 //---WDT
228 restart_wdt();
1274 kakl 229 }
230 }
1298 kakl 231  
232  
1300 kakl 233 #include "dbloader.c" // Space reservation for the BootLoader