root / proj / utils.c @ 173
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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 | } |
| 33 | |||
| 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); } |