comparison: main/task_ds18b20.h
main/task_ds18b20.h
- changeset 0
- 88d965579617
- child 2
- c0184362d48c
equal
deleted
inserted
replaced
| -1:000000000000 | 0:88d965579617 |
|---|---|
| 1 | |
| 2 /** | |
| 3 * @file task_ds18b20.h | |
| 4 * @brief The FreeRTOS task to query the DS18B20 sensors on one or two | |
| 5 * one-wire busses. Each bus must have only one sensor. That way | |
| 6 * we don't need to care about the DS18B20 internal ROM address. | |
| 7 * The task will update the DS18B20_State structure. | |
| 8 */ | |
| 9 | |
| 10 #ifndef _TASK_DS18B20_H | |
| 11 #define _TASK_DS18B20_H | |
| 12 | |
| 13 /* | |
| 14 * Error codes in this task | |
| 15 */ | |
| 16 #define DS18B20_ERR_NONE 0 ///< No errors | |
| 17 #define DS18B20_ERR_NOSENSOR 1 ///< No sensor detected | |
| 18 #define DS18B20_ERR_TOOMANY 2 ///< Too many sensors | |
| 19 #define DS18B20_ERR_CRC 3 ///< CRC read error | |
| 20 #define DS18B20_ERR_READ 4 ///< Generic read error | |
| 21 | |
| 22 | |
| 23 /** | |
| 24 * @brief Structure containing the variables for the DS18B20 task. | |
| 25 */ | |
| 26 typedef struct { | |
| 27 bool bottle_valid; ///< Bottle sensor valid reading. | |
| 28 double bottle_temperature; ///< Current bottle temperature. | |
| 29 int bottle_error; ///< Bottle error number. | |
| 30 } DS18B20_State; | |
| 31 | |
| 32 | |
| 33 | |
| 34 /** | |
| 35 * @brief Request a new measurement | |
| 36 */ | |
| 37 void request_ds18b20(void); | |
| 38 | |
| 39 | |
| 40 /** | |
| 41 * @brief Measurement ready state | |
| 42 * @return Returns true if the temperature measurements are ready | |
| 43 */ | |
| 44 bool ready_ds18b20(void); | |
| 45 | |
| 46 | |
| 47 /** | |
| 48 * @brief The FreeRTOS task to update the DS18B20 temperature sensors on request. | |
| 49 */ | |
| 50 void task_ds18b20(void *); | |
| 51 | |
| 52 | |
| 53 #endif | |
| 54 |
