k-tana-zero/k/utils/ring_buffer.c

#include "ring_buffer.h"

uint8_t read_entry(struct ring_buffer *buf)
{
    if (buf->read == buf->write)
        return 0;

    uint8_t data = buf->buffer[buf->read];
    buf->read = (buf->read + 1) % RING_BUFFER_SIZE;

    return data;
}

void write_entry(struct ring_buffer *buf, uint8_t entry)
{
    buf->buffer[buf->write] = entry;
    buf->write = (buf->write + 1) % RING_BUFFER_SIZE;
}