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| 1 | /** |
1 | /** |
| 2 | * DS18S20 over CAN program. |
2 | * DS18S20 over CAN program. |
| 3 | * |
3 | * |
| 4 | * @target AVR |
4 | * @target AVR |
| 5 | * @date 2006-12-09 |
5 | * @date 2006-12-09 |
| 6 | * @author Jimmy Myhrman, Anders Runeson |
6 | * @author Jimmy Myhrman, Anders Runeson |
| 7 | * |
7 | * |
| 8 | * Högst experimentell, decimaldel fel vid negativ temperatur? |
8 | * Högst experimentell, decimaldel fel vid negativ temperatur? |
| 9 | * negativ temperatur helt otestad! |
9 | * negativ temperatur helt otestad! |
| 10 | * |
10 | * |
| 11 | */ |
11 | */ |
| 12 | 12 | ||
| 13 | /*----------------------------------------------------------------------------- |
13 | /*----------------------------------------------------------------------------- |
| 14 | * Includes |
14 | * Includes |
| 15 | *---------------------------------------------------------------------------*/ |
15 | *---------------------------------------------------------------------------*/ |
| 16 | /* system files */ |
16 | /* system files */ |
| 17 | #include <avr/io.h> |
17 | #include <avr/io.h> |
| 18 | #include <avr/interrupt.h> |
18 | #include <avr/interrupt.h> |
| 19 | #include <avr/wdt.h> |
19 | #include <avr/wdt.h> |
| 20 | #include <stdio.h> |
20 | #include <stdio.h> |
| 21 | /* lib files */ |
21 | /* lib files */ |
| 22 | #include <can.h> |
22 | #include <can.h> |
| 23 | #include <uart.h> |
23 | #include <uart.h> |
| 24 | #include <timebase.h> |
24 | #include <timebase.h> |
| 25 | 25 | ||
| 26 | #include <onewire.h> |
26 | #include <onewire.h> |
| 27 | #include <ds18x20.h> |
27 | #include <ds18x20.h> |
| 28 | 28 | ||
| 29 | #include <delay.h> |
29 | #include <delay.h> |
| 30 | #include <inttypes.h> |
- | |
| 31 | 30 | ||
| 32 | #include <eqlazer_funcdefs.h> |
- | |
| - | 31 | ||
| 33 | 32 | ||
| 34 | #define MAXSENSORS 4 |
33 | #define MAXSENSORS 4 |
| 35 | 34 | ||
| 36 | uint8_t gSensorIDs[MAXSENSORS][OW_ROMCODE_SIZE]; |
35 | uint8_t gSensorIDs[MAXSENSORS][OW_ROMCODE_SIZE]; |
| 37 | 36 | ||
| 38 | uint8_t search_sensors(void) |
37 | uint8_t search_sensors(void) |
| 39 | { |
38 | { |
| 40 | uint8_t i; |
39 | uint8_t i; |
| 41 | uint8_t id[OW_ROMCODE_SIZE]; |
40 | uint8_t id[OW_ROMCODE_SIZE]; |
| 42 | uint8_t diff, nSensors; |
41 | uint8_t diff, nSensors; |
| 43 | 42 | ||
| 44 | printf( "\nScanning Bus for DS18X20\n" ); |
43 | printf( "\nScanning Bus for DS18X20\n" ); |
| 45 | 44 | ||
| 46 | nSensors = 0; |
45 | nSensors = 0; |
| 47 | 46 | ||
| 48 | for( diff = OW_SEARCH_FIRST; |
47 | for( diff = OW_SEARCH_FIRST; |
| 49 | diff != OW_LAST_DEVICE && nSensors < MAXSENSORS ; ) |
48 | diff != OW_LAST_DEVICE && nSensors < MAXSENSORS ; ) |
| 50 | { |
49 | { |
| 51 | DS18X20_find_sensor( &diff, &id[0] ); |
50 | DS18X20_find_sensor( &diff, &id[0] ); |
| 52 | 51 | ||
| 53 | if( diff == OW_PRESENCE_ERR ) { |
52 | if( diff == OW_PRESENCE_ERR ) { |
| 54 | printf( "No Sensor found\n" ); |
53 | printf( "No Sensor found\n" ); |
| 55 | break; |
54 | break; |
| 56 | } |
55 | } |
| 57 | 56 | ||
| 58 | if( diff == OW_DATA_ERR ) { |
57 | if( diff == OW_DATA_ERR ) { |
| 59 | printf( "Bus Error\n" ); |
58 | printf( "Bus Error\n" ); |
| 60 | break; |
59 | break; |
| 61 | } |
60 | } |
| 62 | 61 | ||
| 63 | for (i=0;i<OW_ROMCODE_SIZE;i++) |
62 | for (i=0;i<OW_ROMCODE_SIZE;i++) |
| 64 | gSensorIDs[nSensors][i]=id[i]; |
63 | gSensorIDs[nSensors][i]=id[i]; |
| 65 | 64 | ||
| 66 | nSensors++; |
65 | nSensors++; |
| 67 | } |
66 | } |
| 68 | 67 | ||
| 69 | return nSensors; |
68 | return nSensors; |
| 70 | } |
69 | } |
| - | 70 | ||
| 71 | 71 | ||
| 72 | 72 | ||
| 73 | /*----------------------------------------------------------------------------- |
73 | /*----------------------------------------------------------------------------- |
| 74 | * Main Program |
74 | * Main Program |
| 75 | *---------------------------------------------------------------------------*/ |
75 | *---------------------------------------------------------------------------*/ |
| 76 | int main(void) { |
76 | int main(void) { |
| 77 | uint8_t nSensors, i; |
77 | uint8_t nSensors, i; |
| 78 | uint8_t subzero, cel, cel_frac_bits; |
78 | uint8_t subzero, cel, cel_frac_bits; |
| 79 | 79 | ||
| 80 | Timebase_Init(); |
80 | Timebase_Init(); |
| 81 | Serial_Init(); |
81 | Serial_Init(); |
| 82 | sei(); |
82 | sei(); |
| 83 | 83 | ||
| 84 | printf( "\nDS18X20 1-Wire-Reader\n" ); |
84 | printf( "\nDS18X20 1-Wire-Reader\n" ); |
| 85 | printf( "-----------------------" ); |
85 | printf( "-----------------------" ); |
| 86 | nSensors = search_sensors(); |
86 | nSensors = search_sensors(); |
| 87 | printf( "%i DS18X20 Sensor(s) available:\n", (int) nSensors ); |
87 | printf( "%i DS18X20 Sensor(s) available:\n", (int) nSensors ); |
| 88 | 88 | ||
| 89 | for (i=0; i<nSensors; i++) { |
89 | for (i=0; i<nSensors; i++) { |
| 90 | printf("Sensor# %i is a ", (int) i+1); |
90 | printf("Sensor# %i is a ", (int) i+1); |
| 91 | if ( gSensorIDs[i][0] == DS18S20_ID) |
91 | if ( gSensorIDs[i][0] == DS18S20_ID) |
| 92 | printf("DS18S20/DS1820"); |
92 | printf("DS18S20/DS1820"); |
| 93 | else printf("DS18B20"); |
93 | else printf("DS18B20"); |
| 94 | printf(" which is "); |
94 | printf(" which is "); |
| 95 | if ( DS18X20_get_power_status( &gSensorIDs[i][0] ) == |
95 | if ( DS18X20_get_power_status( &gSensorIDs[i][0] ) == |
| 96 | DS18X20_POWER_PARASITE ) |
96 | DS18X20_POWER_PARASITE ) |
| 97 | printf( "parasite" ); |
97 | printf( "parasite" ); |
| 98 | else printf( "externally" ); |
98 | else printf( "externally" ); |
| 99 | printf( " powered\n" ); |
99 | printf( " powered\n" ); |
| 100 | } |
100 | } |
| 101 | 101 | ||
| 102 | printf("CanInit...\n"); |
102 | printf("CanInit...\n"); |
| 103 | if (Can_Init() != CAN_OK) { |
103 | if (Can_Init() != CAN_OK) { |
| 104 | printf("FAILED!\n"); |
104 | printf("FAILED!\n"); |
| 105 | } |
105 | } |
| 106 | else { |
106 | else { |
| 107 | printf("OK!\n"); |
107 | printf("OK!\n"); |
| 108 | } |
108 | } |
| 109 | 109 | ||
| 110 | uint32_t timeStamp = 0; |
110 | uint32_t timeStamp = 0; |
| 111 | 111 | ||
| 112 | Can_Message_t txMsg; |
112 | Can_Message_t txMsg; |
| 113 | Can_Message_t rxMsg; |
113 | Can_Message_t rxMsg; |
| 114 | 114 | ||
| 115 | txMsg.DataLength = 2; |
115 | txMsg.DataLength = 2; |
| 116 | txMsg.Id = 0; |
116 | txMsg.Id = 0; |
| 117 | txMsg.RemoteFlag = 0; |
117 | txMsg.RemoteFlag = 0; |
| 118 | txMsg.ExtendedFlag = 1; |
118 | txMsg.ExtendedFlag = 1; |
| 119 | - | ||
| 120 | // txMsg.Id = txMsg.Id | NODE_SENSOR_1 | (NID << 9) | (FUNCC_SENSORS_TEMPERATURE_INSIDE << 15) | (FUNCT_SENSORS << 25); |
- | |
| 121 | // txMsg.Id = 0x02010A0F; |
- | |
| 122 | 119 | ||
| 123 | /* main loop */ |
120 | /* main loop */ |
| 124 | while (1) { |
121 | while (1) { |
| 125 | /* service the CAN routines */ |
122 | /* service the CAN routines */ |
| 126 | Can_Service(); |
123 | Can_Service(); |
| 127 | 124 | ||
| 128 | /* check if any messages have been received */ |
125 | /* check if any messages have been received */ |
| 129 | while (Can_Receive(&rxMsg) == CAN_OK) { |
126 | while (Can_Receive(&rxMsg) == CAN_OK) { |
| 130 | /* printf("MSG Received: ID=%lx, DLC=%u, EXT=%u, RTR=%u, ", rxMsg.Id, (uint16_t)(rxMsg.DataLength), (uint16_t)(rxMsg.ExtendedFlag), (uint16_t)(rxMsg.RemoteFlag)); |
- | |
| 131 |
|
127 | |
| 132 | for (uint8_t i=0; i<rxMsg.DataLength; i++) { |
- | |
| 133 | printf("%x ", rxMsg.Data.bytes[i]); |
- | |
| 134 | } |
128 | } |
| 135 | printf("}\n"); |
- | |
| 136 | */ } |
- | |
| 137 | 129 | ||
| 138 | /* check temperature and send on CAN once every other second */ |
130 | /* check temperature and send on CAN once every other second */ |
| 139 | if (Timebase_PassedTimeMillis(timeStamp) >= 2000) { |
131 | if (Timebase_PassedTimeMillis(timeStamp) >= 2000) { |
| 140 | timeStamp = Timebase_CurrentTime(); |
132 | timeStamp = Timebase_CurrentTime(); |
| 141 | 133 | ||
| 142 | if ( DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL ) == DS18X20_OK) { |
134 | if ( DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL ) == DS18X20_OK) { |
| 143 | printf("Measuring temperature... |
135 | printf("Measuring temperature... "); |
| 144 | delay_ms(DS18B20_TCONV_12BIT); |
136 | delay_ms(DS18B20_TCONV_12BIT); |
| 145 | for ( i=0; i<nSensors; i++ ) { |
137 | for ( i=0; i<nSensors; i++ ) { |
| 146 | if ( DS18X20_read_meas( &gSensorIDs[i][0], &subzero, |
138 | if ( DS18X20_read_meas( &gSensorIDs[i][0], &subzero, |
| 147 | &cel, &cel_frac_bits) == DS18X20_OK ) { |
139 | &cel, &cel_frac_bits) == DS18X20_OK ) { |
| 148 | 140 | ||
| 149 | //txMsg.Data.bytes[0] = subzero; |
141 | //txMsg.Data.bytes[0] = subzero; |
| 150 | if (subzero) { |
142 | if (subzero) { |
| 151 | txMsg.Data.bytes[ |
143 | txMsg.Data.bytes[i*2] = -cel; |
| 152 | } else { |
- | |
| 153 | txMsg.Data.bytes[0] = cel; |
- | |
| 154 | } |
- | |
| 155 | /* if (subzero) { |
- | |
| 156 |
|
144 | txMsg.Data.bytes[i*2+1] = ~(cel_frac_bits<<4); |
| 157 | } else { |
145 | } else { |
| 158 | txMsg.Data.bytes[i*2] = cel; |
146 | txMsg.Data.bytes[i*2] = cel; |
| - | 147 | txMsg.Data.bytes[i*2+1] = (cel_frac_bits<<4); |
|
| 159 | } |
148 | } |
| 160 |
|
149 | |
| 161 | txMsg.Data.bytes[1] = (cel_frac_bits<<4); |
- | |
| 162 | // txMsg.Data.bytes[i*2+1] = (cel_frac_bits<<4); |
- | |
| 163 |
|
150 | } |
| 164 | txMsg.Id = 0x02020A0F; |
- | |
| 165 | // printf("freezer\n"); |
- | |
| 166 | }else if(i==1){ // outside |
- | |
| 167 | txMsg.Id = 0x0201FA0F; |
- | |
| 168 |
|
151 | else printf("CRC Error (lost connection?)\n"); |
| 169 | }else if(i==2){ // inside |
- | |
| 170 | txMsg.Id = 0x02010A0F; |
- | |
| 171 | // printf("inside\n"); |
- | |
| 172 | }else{ |
- | |
| 173 | txMsg.Id = 0x00000003; |
- | |
| 174 | } |
152 | } |
| 175 | 153 | ||
| - | 154 | txMsg.DataLength = nSensors*2; |
|
| 176 | printf("sending...\n"); |
155 | printf("sending...\n"); |
| - | 156 | /* send txMsg */ |
|
| 177 | Can_Send(&txMsg); |
157 | Can_Send(&txMsg); |
| 178 | } |
- | |
| 179 | else printf("CRC Error (lost connection?)\n"); |
- | |
| 180 | } |
- | |
| 181 | } |
158 | } |
| 182 | else printf("Start meas. failed (short circuit?)\n"); |
159 | else printf("Start meas. failed (short circuit?)\n"); |
| 183 | 160 | ||
| 184 | // txMsg.DataLength = nSensors*2; |
- | |
| 185 | // printf("sending...\n"); |
- | |
| 186 | /* send txMsg */ |
- | |
| 187 | // Can_Send(&txMsg); |
- | |
| 188 | } |
161 | } |
| 189 | } |
162 | } |
| 190 | 163 | ||
| 191 | return 0; |
164 | return 0; |
| 192 | } |
165 | } |
| 193 | 166 | ||