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Last change
on this file since 69 was 69, checked in by f.jahn, 4 weeks ago |
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Started implementing Modbus on USB CDC channel.
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File size:
623 bytes
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| [69] | 1 | #ifndef RING_BUFFER_H
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| 2 | #define RING_BUFFER_H
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| 3 |
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| 4 | #include <stdint.h>
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| 5 | #include <stdbool.h>
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| 6 |
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| 7 | #define RB_SIZE (1U << 13U) // must be power of 2 for efficiency
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| 8 |
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| 9 | typedef struct
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| 10 | {
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| 11 | uint8_t buffer[RB_SIZE];
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| 12 | volatile uint16_t head;
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| 13 | volatile uint16_t tail;
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| 14 | } ring_buffer_t;
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| 15 |
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| 16 | void rb_init(ring_buffer_t* rb);
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| 17 | bool rb_push(ring_buffer_t* rb, uint8_t data);
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| 18 | bool rb_pop(ring_buffer_t* rb, uint8_t* data);
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| 19 | uint16_t rb_available(const ring_buffer_t* rb);
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| 20 | bool rb_peek(const ring_buffer_t* const rb, uint8_t* const data);
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| 21 | bool rb_peek_at(const ring_buffer_t* const rb, uint16_t index, uint8_t* data);
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| 22 |
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| 23 | #endif
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