Mercurial > mbsePi-apps / file comparison
comparison: thermferm/units.c
thermferm/units.c
- changeset 164
- f16def8472ba
- parent 106
- 1bd9a16f5061
- child 170
- 3cb99272b84b
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| 163:3d813570a5e3 | 164:f16def8472ba |
|---|---|
| 33 | 33 |
| 34 | 34 |
| 35 | 35 |
| 36 int read_w1_28(char *address, int *val) | 36 int read_w1_28(char *address, int *val) |
| 37 { | 37 { |
| 38 char *device, line[60], *p = NULL; | 38 devices_list *device; |
| 39 FILE *fp; | 39 int tmp; |
| 40 int rc = 0; | |
| 41 | 40 |
| 42 device = xstrcpy((char *)"/sys/bus/w1/devices/"); | 41 for (device = Config.devices; device; device = device->next) { |
| 43 device = xstrcat(device, address); | 42 if (strcmp(address, device->uuid) == 0) { |
| 44 device = xstrcat(device, (char *)"/w1_slave"); | 43 tmp = device->value; |
| 45 | 44 *val = tmp; |
| 46 /* | 45 return device->present; |
| 47 * Read sensor data | |
| 48 */ | |
| 49 if ((fp = fopen(device, "r"))) { | |
| 50 /* | |
| 51 * The output looks like: | |
| 52 * 72 01 4b 46 7f ff 0e 10 57 : crc=57 YES | |
| 53 * 72 01 4b 46 7f ff 0e 10 57 t=23125 | |
| 54 */ | |
| 55 fgets(line, 50, fp); | |
| 56 line[strlen(line)-1] = '\0'; | |
| 57 if ((line[36] == 'Y') && (line[37] == 'E')) { | |
| 58 /* | |
| 59 * CRC is Ok, continue | |
| 60 */ | |
| 61 fgets(line, 50, fp); | |
| 62 line[strlen(line)-1] = '\0'; | |
| 63 strtok(line, (char *)"="); | |
| 64 p = strtok(NULL, (char *)"="); | |
| 65 rc = sscanf(p, "%d", val); | |
| 66 if (rc != 1) { | |
| 67 syslog(LOG_NOTICE, "sensor %s data parse error", address); | |
| 68 rc = 3; | |
| 69 } else { | |
| 70 rc = 0; | |
| 71 } | |
| 72 } else { | |
| 73 syslog(LOG_NOTICE, "sensor %s CRC error", address); | |
| 74 rc = 1; | |
| 75 } | 46 } |
| 76 fclose(fp); | |
| 77 } else { | |
| 78 syslog(LOG_NOTICE, "sensor %s is missing", address); | |
| 79 rc = 2; | |
| 80 } | 47 } |
| 81 | 48 |
| 82 free(device); | 49 return 1; |
| 83 device = NULL; | |
| 84 | |
| 85 return rc; | |
| 86 } | 50 } |
| 87 | 51 |
| 88 | 52 |
| 89 | 53 |
| 90 #ifdef HAVE_WIRINGPI_H | 54 #ifdef HAVE_WIRINGPI_H |
| 137 if (my_shutdown) | 101 if (my_shutdown) |
| 138 break; | 102 break; |
| 139 | 103 |
| 140 if (unit->air_address) { | 104 if (unit->air_address) { |
| 141 rc = read_w1_28(unit->air_address, &temp); | 105 rc = read_w1_28(unit->air_address, &temp); |
| 142 if (rc == 0) { | 106 if (rc == 2) { |
| 143 /* | 107 /* |
| 144 * It is possible to have read errors or extreme values. | 108 * It is possible to have read errors or extreme values. |
| 145 * This can happen with bad connections so we compare the | 109 * This can happen with bad connections so we compare the |
| 146 * value with the previous one. If the difference is too | 110 * value with the previous one. If the difference is too |
| 147 * much, we don't send that value. That also means that if | 111 * much, we don't send that value. That also means that if |
| 157 syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->air_temperature, temp); | 121 syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->air_temperature, temp); |
| 158 if (debug) { | 122 if (debug) { |
| 159 fprintf(stdout, "deviation error deviation=%d, old=%d new=%d\n", deviation, unit->air_temperature, temp); | 123 fprintf(stdout, "deviation error deviation=%d, old=%d new=%d\n", deviation, unit->air_temperature, temp); |
| 160 } | 124 } |
| 161 } | 125 } |
| 162 } else if (rc == 2) { | 126 } else if (rc == 3) { |
| 163 unit->air_state = 1; | 127 unit->air_state = 1; |
| 164 } else { | 128 } else { |
| 165 unit->air_state = 2; | 129 unit->air_state = 2; |
| 166 } | 130 } |
| 167 } | 131 } |
| 168 if (my_shutdown) | 132 if (my_shutdown) |
| 169 break; | 133 break; |
| 170 | 134 |
| 171 if (unit->beer_address) { | 135 if (unit->beer_address) { |
| 172 rc = read_w1_28(unit->beer_address, &temp); | 136 rc = read_w1_28(unit->beer_address, &temp); |
| 173 if (rc == 0) { | 137 if (rc == 2) { |
| 174 deviation = 20000; | 138 deviation = 20000; |
| 175 if ((unit->beer_temperature == 0) || | 139 if ((unit->beer_temperature == 0) || |
| 176 (unit->beer_temperature && (temp > (int)unit->beer_temperature - deviation) && (temp < ((int)unit->beer_temperature + deviation)))) { | 140 (unit->beer_temperature && (temp > (int)unit->beer_temperature - deviation) && (temp < ((int)unit->beer_temperature + deviation)))) { |
| 177 unit->beer_temperature = temp; | 141 unit->beer_temperature = temp; |
| 178 unit->beer_state = 0; | 142 unit->beer_state = 0; |
| 180 syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->beer_temperature, temp); | 144 syslog(LOG_NOTICE, "deviation error deviation=%d, old=%d new=%d", deviation, unit->beer_temperature, temp); |
| 181 if (debug) { | 145 if (debug) { |
| 182 fprintf(stdout, "deviation error deviation=%d, old=%d new=%d\n", deviation, unit->beer_temperature, temp); | 146 fprintf(stdout, "deviation error deviation=%d, old=%d new=%d\n", deviation, unit->beer_temperature, temp); |
| 183 } | 147 } |
| 184 } | 148 } |
| 185 } else if (rc == 2) { | 149 } else if (rc == 3) { |
| 186 unit->beer_state = 1; | 150 unit->beer_state = 1; |
| 187 } else { | 151 } else { |
| 188 unit->beer_state = 2; | 152 unit->beer_state = 2; |
| 189 } | 153 } |
| 190 } | 154 } |
