lora_bl/Core/Src/ring_buffer.c

//
// Created by EDZ on 25-9-23.
//

#include "../Inc/ring_buffer.h"

void RingBuffer_Init(RingBuffer *q) {
    q->head = 0;
    q->tail = 0;
}

int RingBuffer_IsEmpty(RingBuffer *q) {
    return (q->head == q->tail);
}

int RingBuffer_IsFull(RingBuffer *q) {
    return ((q->tail + 1) % QUEUE_SIZE == q->head);
}

int RingBuffer_Enqueue(RingBuffer *q, const uint8_t *data) {
    if (RingBuffer_IsFull(q)) {
        return -1;  // 队列已满
    }
    // q->buffer[q->tail] = data;
    memcpy(q->buffer[q->tail], data, BL_DATA_SIZE);
    q->tail = (q->tail + 1) % QUEUE_SIZE;
    return 0;
}

int RingBuffer_Dequeue(RingBuffer *q, uint8_t *data) {
    if (RingBuffer_IsEmpty(q)) {
        return -1;  // 队列为空·
    }
    // *data = q->buffer[q->head];
    memcpy(data,q->buffer[q->head], BL_DATA_SIZE);
    q->head = (q->head + 1) % QUEUE_SIZE;
    return 0;
}