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- #include "ring.h"
- uint8_t ring_next(uint8_t current, uint8_t max_index)
- {
- uint8_t next;
- next = (uint8_t)(current + 1u);
- if (next > max_index)
- next = 0u;
- return next;
- }
- uint8_t ring_prev(uint8_t current, uint8_t max_index)
- {
- uint8_t prev;
- prev = (uint8_t)(current - 1u);
- if (prev > max_index)
- prev = max_index;
- return prev;
- }
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