rinngbuf.c

#include <zephyr.h>
#include <sys/printk.h>
#include <sys/ring_buffer.h>

#define RING_BUF_SIZE 10
RING_BUF_ITEM_DECLARE_SIZE(ringbuf, RING_BUF_SIZE);

void dump(struct ring_buf *r, uint32_t ret)
{
        printk("ret %3u, size %3u space %3u head %3u tail %3u\n",
               ret,
               ringbuf.size, ring_buf_space_get(r),
               r->head, r->tail);
}

void main(void)
{
        uint32_t ret = 0;
	char buf;

        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "0", 1);
        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "12345678", 8);
        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "a", 1);
        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "b", 1);
        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "c", 1);
        dump(&ringbuf, ret);
        ret = ring_buf_get(&ringbuf, &buf, 1);
        dump(&ringbuf, ret);
        ret = ring_buf_put(&ringbuf, "d", 1);
        dump(&ringbuf, ret);
}