Function rt_ringbuffer_putchar

components/drivers/ipc/ringbuffer.c:272–294

* @brief Put a byte into the ring buffer. If ring buffer is full, this operation will fail. * * @param rb A pointer to the ring buffer object. * @param ch A byte put into the ring buffer. * * @return Return the data size we put into the ring buffer. The ring buffer is full if returns 0. Otherwise, it will return 1. */

 * @return Return the data size we put into the ring buffer. The ring buffer is full if returns 0. Otherwise, it will return 1.
 */
rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch)
{
    RT_ASSERT(rb != RT_NULL);

    /* whether has enough space */
    if (!rt_ringbuffer_space_len(rb))
        return 0;

    rb->buffer_ptr[rb->write_index] = ch;

    /* flip mirror */
    if (rb->write_index == rb->buffer_size - 1)
    {
        rb->write_mirror = ~rb->write_mirror;
        rb->write_index = 0;
    }
    else
    {
        rb->write_index++;
    }

    return 1;
}
RTM_EXPORT(rt_ringbuffer_putchar);

/**