root / proj / libs / utils / include / utils.h @ 345
History | View | Annotate | Download (2.7 KB)
| 1 | 144 | up20180655 | #ifndef UTILS_H_INCLUDED
|
|---|---|---|---|
| 2 | #define UTILS_H_INCLUDED
|
||
| 3 | |||
| 4 | 334 | up20180642 | /**
|
| 5 | * @defgroup utils utils
|
||
| 6 | * @brief Utilities module.
|
||
| 7 | *
|
||
| 8 | * @{
|
||
| 9 | */
|
||
| 10 | 234 | up20180655 | |
| 11 | 334 | up20180642 | /** @brief Get first digit (leftmost digit) of 8-bit BCD */
|
| 12 | #define BCD_FIRST(n) (n >> 4) |
||
| 13 | /** @brief Get second digit (rightmost digit) of 8-bit BCD */
|
||
| 14 | #define BCD_SECOND(n) (n & 0x0F) |
||
| 15 | |||
| 16 | 144 | up20180655 | /**
|
| 17 | * @brief Gets the least significant byte of a 16-bit variable
|
||
| 18 | * @param val 16-bit variable
|
||
| 19 | * @param lsb Pointer to a 8-bit variable to store the value of the LSB
|
||
| 20 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
|
||
| 21 | */
|
||
| 22 | int(util_get_LSB)(uint16_t val, uint8_t *lsb);
|
||
| 23 | |||
| 24 | /**
|
||
| 25 | * @brief Gets the most significant byte of a 16-bit variable
|
||
| 26 | * @param val 16-bit variable
|
||
| 27 | 323 | up20180642 | * @param msb Pointer to a 8-bit variable to store the value of the MSB
|
| 28 | 144 | up20180655 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
|
| 29 | */
|
||
| 30 | int(util_get_MSB)(uint16_t val, uint8_t *msb);
|
||
| 31 | |||
| 32 | /**
|
||
| 33 | * @brief sys_inb wrapper
|
||
| 34 | * @param port Port to read from
|
||
| 35 | * @param value Pointer to byte to store value read
|
||
| 36 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
|
||
| 37 | */
|
||
| 38 | int (util_sys_inb)(int port, uint8_t *value); |
||
| 39 | |||
| 40 | /**
|
||
| 41 | 145 | up20180655 | * @brief Unsubcribes Interrupts
|
| 42 | * @param interrupt_id Interrupt ID, value via arguments on subscription of the interrupt_id
|
||
| 43 | * @see subscribe_kbc_interrupt, subscribe_timer_interrupt
|
||
| 44 | * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK
|
||
| 45 | */
|
||
| 46 | int (unsubscribe_interrupt)(int *interrupt_id); |
||
| 47 | |||
| 48 | /**
|
||
| 49 | 144 | up20180655 | * @brief Gets the minimum value out of two values.
|
| 50 | * @param a First value
|
||
| 51 | * @param b Second value
|
||
| 52 | * @return The minimum of the two values
|
||
| 53 | */
|
||
| 54 | 335 | up20180642 | int16_t min_16(int16_t a, int16_t b); |
| 55 | /// @overload
|
||
| 56 | uint16_t min_u16(uint16_t a, uint16_t b); |
||
| 57 | /// @overload
|
||
| 58 | int32_t min_32(int32_t a, int32_t b); |
||
| 59 | /// @overload
|
||
| 60 | double min_d(double a, double b); |
||
| 61 | 144 | up20180655 | |
| 62 | /**
|
||
| 63 | * @brief Gets the maximum value out of two values.
|
||
| 64 | * @param a First value
|
||
| 65 | * @param b Second value
|
||
| 66 | * @return The maximum of the two values
|
||
| 67 | */
|
||
| 68 | 335 | up20180642 | int16_t max_16(int16_t a, int16_t b); |
| 69 | /// @overload
|
||
| 70 | uint16_t max_u16(uint16_t a, uint16_t b); |
||
| 71 | /// @overload
|
||
| 72 | int32_t max_32(int32_t a, int32_t b); |
||
| 73 | /// @overload
|
||
| 74 | double max_d(double a, double b); |
||
| 75 | 144 | up20180655 | |
| 76 | 334 | up20180642 | /**
|
| 77 | * @brief Get the absolute value of a double.
|
||
| 78 | * @param a Argument
|
||
| 79 | * @return Absolute value of a
|
||
| 80 | */
|
||
| 81 | 335 | up20180642 | double abs_d(double a); |
| 82 | 144 | up20180655 | |
| 83 | 334 | up20180642 | /**
|
| 84 | * @brief Compare if two doubles are approximately equal (within 1e-10).
|
||
| 85 | * @param a First value
|
||
| 86 | * @param b Second value
|
||
| 87 | * @return true if the two numbers are approximately equal, false otherwise
|
||
| 88 | */
|
||
| 89 | 335 | up20180642 | int eq_d(double a, double b); |
| 90 | 200 | up20180655 | |
| 91 | 334 | up20180642 | /**
|
| 92 | * @}
|
||
| 93 | */
|
||
| 94 | |||
| 95 | 144 | up20180655 | #endif //UTILS_H_INCLUDED |