root / lab2 / include / utils.h @ 198
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| 1 | 196 | up20180642 | #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 | 198 | up20180642 | #ifdef LAB3
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| 21 | uint32_t sys_inb_counter; |
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| 22 | #endif
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| 23 | |||
| 24 | 196 | up20180642 | /**
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| 25 | * @brief sys_inb wrapper
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| 26 | * @param port Port to read from
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| 27 | * @param value Pointer to byte to store value read
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| 28 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 29 | */
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| 30 | int (util_sys_inb)(int port, uint8_t *value); |
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| 31 | |||
| 32 | /**
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| 33 | * @brief Unsubcribes Interrupts
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| 34 | * @param interrupt_id Interrupt ID, value via arguments on subscription of the interrupt_id
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| 35 | * @see subscribe_kbc_interrupt, subscribe_timer_interrupt
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| 36 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
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| 37 | */
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| 38 | int (unsubscribe_interrupt)(int *interrupt_id); |
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| 39 | |||
| 40 | /**
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| 41 | * @brief Gets the minimum value out of two values.
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| 42 | * @param a First value
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| 43 | * @param b Second value
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| 44 | * @return The minimum of the two values
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| 45 | */
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| 46 | int32_t min(int32_t a, int32_t b); |
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| 47 | |||
| 48 | /**
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| 49 | * @brief Gets the maximum value out of two values.
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| 50 | * @param a First value
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| 51 | * @param b Second value
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| 52 | * @return The maximum of the two values
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| 53 | */
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| 54 | int32_t max(int32_t a, int32_t b); |
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| 55 | |||
| 56 | |||
| 57 | #endif //UTILS_H_INCLUDED |