root / proj / src / utils.c @ 229
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1 | 144 | up20180655 | #include <lcom/lcf.h> |
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2 | |||
3 | #include "utils.h" |
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4 | |||
5 | #include <stdint.h> |
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6 | #include "errors.h" |
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7 | |||
8 | int(util_get_LSB)(uint16_t val, uint8_t *lsb) {
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9 | if (lsb == NULL) return NULL_PTR; |
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10 | *lsb = val; |
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11 | return SUCCESS;
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12 | } |
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13 | |||
14 | int(util_get_MSB)(uint16_t val, uint8_t *msb) {
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15 | if (msb == NULL) return NULL_PTR; |
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16 | *msb = (val >> 8);
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17 | return SUCCESS;
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18 | } |
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19 | |||
20 | int (util_sys_inb)(int port, uint8_t *value) { |
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21 | if(value == NULL) return NULL_PTR; |
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22 | uint32_t n = 0;
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23 | if(sys_inb(port, &n)) return READ_ERROR; |
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24 | *value = n; |
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25 | return SUCCESS;
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26 | } |
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27 | |||
28 | 145 | up20180655 | int (unsubscribe_interrupt)(int *interrupt_id) { |
29 | if (interrupt_id == NULL) return NULL_PTR; |
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30 | if(sys_irqrmpolicy(interrupt_id)) return UNSBCR_ERROR; |
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31 | return SUCCESS;
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32 | 144 | up20180655 | } |
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34 | 167 | up20180655 | int32_t min(int32_t a, int32_t b){ return (b < a ? b : a); }
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35 | int32_t max(int32_t a, int32_t b){ return (a < b ? b : a); }
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36 | 200 | up20180655 | |
37 | double min_d(double a, double b){ return (b < a ? b : a); } |
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38 | double max_d(double a, double b){ return (a < b ? b : a); } |