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24 lines
470 B
24 lines
470 B
2 months ago
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/*
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* Interface to DS18B20 Temperature Sensors
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*
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* (c) 2019 Martin Mareš <mj@ucw.cz>
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*/
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#ifndef _DS18B20_H
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#define _DS18B20_H
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struct ds_sensor {
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byte address[8]; // All zeroes if sensor does not exist.
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// Otherwise, address[0] is guaranteed to be non-zero.
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int current_temp; // Temperature in m°C or DS_TEMP_UNKNOWN
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};
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extern struct ds_sensor ds_sensors[DS_NUM_SENSORS];
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#define DS_TEMP_UNKNOWN 0x7fffffff
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void ds_init(void);
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void ds_step(void);
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#endif
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