root / proj / utils.h @ 144
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| 1 | 144 | up20180655 | #ifndef UTILS_H_INCLUDED
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| 2 | #define UTILS_H_INCLUDED
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| 3 | |||
| 4 | /**
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| 5 | * @brief Gets the least significant byte of a 16-bit variable
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| 6 | * @param val 16-bit variable
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| 7 | * @param lsb Pointer to a 8-bit variable to store the value of the LSB
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| 8 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 9 | */
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| 10 | int(util_get_LSB)(uint16_t val, uint8_t *lsb);
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| 11 | |||
| 12 | /**
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| 13 | * @brief Gets the most significant byte of a 16-bit variable
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| 14 | * @param val 16-bit variable
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| 15 | * @param lsb Pointer to a 8-bit variable to store the value of the MSB
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| 16 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 17 | */
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| 18 | int(util_get_MSB)(uint16_t val, uint8_t *msb);
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| 19 | |||
| 20 | /**
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| 21 | * @brief sys_inb wrapper
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| 22 | * @param port Port to read from
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| 23 | * @param value Pointer to byte to store value read
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| 24 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 25 | */
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| 26 | int (util_sys_inb)(int port, uint8_t *value); |
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| 27 | |||
| 28 | /**
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| 29 | * @brief Gets the minimum value out of two values.
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| 30 | * @param a First value
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| 31 | * @param b Second value
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| 32 | * @return The minimum of the two values
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| 33 | */
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| 34 | int16_t min(int16_t a, int16_t b); |
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| 35 | |||
| 36 | /**
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| 37 | * @brief Gets the maximum value out of two values.
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| 38 | * @param a First value
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| 39 | * @param b Second value
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| 40 | * @return The maximum of the two values
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| 41 | */
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| 42 | int16_t max(int16_t a, int16_t b); |
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| 43 | |||
| 44 | |||
| 45 | #endif //UTILS_H_INCLUDED |