root / proj / libs / utils / include / utils.h @ 309
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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 | 234 | up20180655 | #define BCD_FIRST(n) (n >> 4) /** @brief Get first digit (leftmost digit) of 8-bit BCD */ |
| 5 | #define BCD_SECOND(n) (n & 0x0F) /** @brief Get second digit (rightmost digit) of 8-bit BCD */ |
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| 6 | |||
| 7 | 144 | up20180655 | /**
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| 8 | * @brief Gets the least significant byte of a 16-bit variable
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| 9 | * @param val 16-bit variable
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| 10 | * @param lsb Pointer to a 8-bit variable to store the value of the LSB
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| 11 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 12 | */
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| 13 | int(util_get_LSB)(uint16_t val, uint8_t *lsb);
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| 14 | |||
| 15 | /**
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| 16 | * @brief Gets the most significant byte of a 16-bit variable
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| 17 | * @param val 16-bit variable
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| 18 | * @param lsb Pointer to a 8-bit variable to store the value of the MSB
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| 19 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 20 | */
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| 21 | int(util_get_MSB)(uint16_t val, uint8_t *msb);
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| 22 | |||
| 23 | /**
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| 24 | * @brief sys_inb wrapper
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| 25 | * @param port Port to read from
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| 26 | * @param value Pointer to byte to store value read
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| 27 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 28 | */
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| 29 | int (util_sys_inb)(int port, uint8_t *value); |
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| 30 | |||
| 31 | /**
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| 32 | 145 | up20180655 | * @brief Unsubcribes Interrupts
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| 33 | * @param interrupt_id Interrupt ID, value via arguments on subscription of the interrupt_id
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| 34 | * @see subscribe_kbc_interrupt, subscribe_timer_interrupt
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| 35 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 36 | */
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| 37 | int (unsubscribe_interrupt)(int *interrupt_id); |
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| 38 | |||
| 39 | /**
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| 40 | 144 | up20180655 | * @brief Gets the minimum value out of two values.
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| 41 | * @param a First value
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| 42 | * @param b Second value
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| 43 | * @return The minimum of the two values
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| 44 | */
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| 45 | 167 | up20180655 | int32_t min(int32_t a, int32_t b); |
| 46 | 144 | up20180655 | |
| 47 | /**
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| 48 | * @brief Gets the maximum value out of two values.
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| 49 | * @param a First value
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| 50 | * @param b Second value
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| 51 | * @return The maximum of the two values
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| 52 | */
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| 53 | 167 | up20180655 | int32_t max(int32_t a, int32_t b); |
| 54 | 144 | up20180655 | |
| 55 | 200 | up20180655 | /**
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| 56 | * @brief Gets the minimum value out of two doubles.
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| 57 | * @param a First value
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| 58 | * @param b Second value
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| 59 | * @return The minimum of the two values
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| 60 | */
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| 61 | double min_d(double a, double b); |
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| 62 | 144 | up20180655 | |
| 63 | 200 | up20180655 | /**
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| 64 | * @brief Gets the maximum value out of two doubles.
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| 65 | * @param a First value
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| 66 | * @param b Second value
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| 67 | * @return The maximum of the two values
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| 68 | */
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| 69 | double max_d(double a, double b); |
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| 70 | |||
| 71 | |||
| 72 | 250 | up20180655 | double abs_d(double a); |
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| 74 | |||
| 75 | 144 | up20180655 | #endif //UTILS_H_INCLUDED |