Rev Author Line No. Line
1274 kakl 1 /**** IR Mrakomer 4 ****/
2 #define VERSION "4.0"
1277 kakl 3 #define ID "$Id: irmrak4.c 1284 2009-01-07 21:05:29Z kakl $"
1274 kakl 4 #include "irmrak4.h"
5  
1280 kakl 6 #define MAXHEAT 20 // Number of cycles for heating
7 #define MAXOPEN 20 // Number of cycles for dome open
8 #define MEASURE_DELAY 10000 // Delay to a next measurement
9 #define RESPONSE_DELAY 100 // Reaction time after receiving a command
10 #define SAFETY_COUNT 100 // Time of one emergency cycle
11 #define SEND_DELAY 50 // Time between two characters on RS232
1275 kakl 12  
1274 kakl 13 #define DOME PIN_B4 // Dome controll port
14 #define HEATING PIN_B3 // Heating for defrosting
15  
16 #bit CREN = 0x18.4 // USART registers
17 #bit SPEN = 0x18.7
18 #bit OERR = 0x18.1
19 #bit FERR = 0x18.2
20  
1280 kakl 21 char VER[4]=VERSION; // Buffer for concatenate of a version string
1274 kakl 22 char REV[50]=ID;
23  
1280 kakl 24 int8 heat; // Status variables
1274 kakl 25 int8 open;
26  
1284 kakl 27 inline void toggle_dome(void) // Wire exercise
1275 kakl 28 {
29 if (open>0)
30 {output_toggle(DOME);}
31 else
32 {output_low(DOME);}
33 }
1274 kakl 34  
1284 kakl 35 void delay(int16 cycles) // Wire exercise with delay
1274 kakl 36 {
1275 kakl 37 int16 i;
1278 kakl 38  
1275 kakl 39 for(i=0; i<cycles; i++) {toggle_dome(); delay_us(100);}
40 }
1274 kakl 41  
1284 kakl 42 void welcome(void) // Welcome message
43 {
44 printf("\n\r* Mrakomer %s (C) 2007 KAKL *\n\r",VER); // Welcome message
45 printf("* %s *\n\r",REV);
46 printf("<#sequence> <ambient [1/100 C]> <sky [1/100 C]> ");
47 printf("<heating [s]> <dome [s]>\n\r\n\r");
48 }
1274 kakl 49  
50  
1284 kakl 51 #include "smb.c" // System Management Bus driver
1274 kakl 52  
1284 kakl 53  
1280 kakl 54 // Read sensor RAM
55 // Returns temperature in °K
1281 kakl 56 int16 ReadTemp(int8 addr, int8 select)
1274 kakl 57 {
58 unsigned char arr[6]; // Buffer for the sent bytes
59 int8 crc; // Readed CRC
60 int16 temp; // Readed temperature
61  
1275 kakl 62 addr<<=1;
63  
1284 kakl 64 SMB_STOP_bit(); //If slave send NACK stop comunication
65 SMB_START_bit(); //Start condition
1275 kakl 66 SMB_TX_byte(addr);
67 SMB_TX_byte(RAM_Access|select);
1284 kakl 68 SMB_START_bit(); //Repeated Start condition
1275 kakl 69 SMB_TX_byte(addr);
1284 kakl 70 arr[2]=SMB_RX_byte(ACK); //Read low data,master must send ACK
71 arr[1]=SMB_RX_byte(ACK); //Read high data,master must send ACK
1274 kakl 72 temp=MAKE16(arr[1],arr[2]);
1284 kakl 73 crc=SMB_RX_byte(NACK); //Read PEC byte, master must send NACK
74 SMB_STOP_bit(); //Stop condition
1274 kakl 75  
76 arr[5]=addr;
77 arr[4]=RAM_Access|select;
78 arr[3]=addr;
79 arr[0]=0;
80 if (crc != PEC_calculation(arr)) temp=0; // Calculate and check CRC
81  
82 return temp;
83 }
84  
1284 kakl 85 /*-----------------------------------------------------------------------*/
1274 kakl 86 void main()
87 {
1280 kakl 88 unsigned int16 seq, temp, tempa;
1274 kakl 89 signed int16 ta, to;
1280 kakl 90 int8 safety_counter;
1274 kakl 91  
1284 kakl 92 output_low(DOME); // Close Dome
1274 kakl 93 output_low(HEATING); // Heating off
94 setup_wdt(WDT_2304MS); // Setup Watch Dog
95 setup_adc_ports(NO_ANALOGS);
96 setup_adc(ADC_OFF);
97 setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
98 setup_timer_1(T1_DISABLED);
99 setup_timer_2(T2_DISABLED,0,1);
100 setup_comparator(NC_NC_NC_NC);
101 setup_vref(FALSE);
102 // setup_oscillator(OSC_4MHZ|OSC_INTRC,+2); // Pokud je nutna kalibrace RCosc
1283 kakl 103 setup_oscillator(OSC_8MHZ|OSC_INTRC);
1274 kakl 104  
105 delay_ms(1000);
106 restart_wdt();
1284 kakl 107  
108 welcome();
109  
1274 kakl 110 tempa=ReadTemp(SA, RAM_Tamb); // Dummy read
111 temp=ReadTemp(SA, RAM_Tobj1);
112  
1284 kakl 113 seq=0; // Variables initiation
1274 kakl 114 heat=0;
115 open=0;
116  
1280 kakl 117 //---WDT
1274 kakl 118 restart_wdt();
119  
1284 kakl 120 while(TRUE) // Main Loop
1274 kakl 121 {
122 while(kbhit()) getc(); // Flush USART buffer
123 CREN=0; CREN=1; // Reinitialise USART
124  
1284 kakl 125 safety_counter=SAFETY_COUNT; // Heating and Dome Count Down
1278 kakl 126 do
1274 kakl 127 {
1280 kakl 128 if (safety_counter<SAFETY_COUNT) safety_counter++;
1274 kakl 129  
1280 kakl 130 delay(RESPONSE_DELAY);
131  
132 if (safety_counter>=SAFETY_COUNT)
133 {
134 if (heat>0)
135 {
136 output_high(HEATING);
137 heat--;
138 }
139 else
140 {
141 output_low(HEATING);
142 }
1281 kakl 143  
1280 kakl 144 if (open>0) open--;
145  
146 safety_counter=0;
147 //---WDT
148 restart_wdt();
149 }
1274 kakl 150 } while (!kbhit());
1284 kakl 151  
1280 kakl 152 //---WDT
153 restart_wdt();
1284 kakl 154 { // Retrieve command
1274 kakl 155 char ch;
1278 kakl 156  
1274 kakl 157 ch=getc();
1278 kakl 158  
1274 kakl 159 switch (ch)
160 {
161 case 'h':
1280 kakl 162 heat=MAXHEAT; // Need heating
1274 kakl 163 break;
1278 kakl 164  
1274 kakl 165 case 'c':
1280 kakl 166 heat=0; // Need colder
1274 kakl 167 break;
1278 kakl 168  
1274 kakl 169 case 'o':
170 open=MAXOPEN; // Open the dome
171 break;
1278 kakl 172  
1284 kakl 173 case 'x':
174 open=MAXOPEN; // Open the dome
175 heat=MAXHEAT; // Need heating
176 break;
177  
1274 kakl 178 case 'l':
179 open=0; // Lock the dome
180 break;
1284 kakl 181  
182 case 'i':
183 welcome(); // Information about version, etc...
184 break;
1274 kakl 185 }
186 }
187  
1280 kakl 188 seq++; // Increment the number of measurement
1274 kakl 189  
190 tempa=ReadTemp(SA, RAM_Tamb); // Read temperatures from sensor
191 temp=ReadTemp(SA, RAM_Tobj1);
192  
193 ta=tempa*2-27315; // °K -> °C
194 to=temp*2-27315;
195  
196 { // printf
1284 kakl 197 char output[8]; // Output buffer
198 int8 j; // String pointer
1278 kakl 199  
1282 kakl 200 delay(SEND_DELAY);
201 sprintf(output,"#%Lu ", seq);
202 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
203 sprintf(output,"%Ld ", ta);
204 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
205 sprintf(output,"%Ld ", to);
206 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
1283 kakl 207 sprintf(output,"%u ", heat);
1282 kakl 208 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
209 sprintf(output,"%u\n\r\0", open);
210 j=0; while(output[j]!=0) { delay(SEND_DELAY); putc(output[j++]); }
1274 kakl 211 }
1280 kakl 212  
213 delay(MEASURE_DELAY); // Delay to a next measurement
214 //---WDT
215 restart_wdt();
1274 kakl 216 }
217 }
218