实现Buffer工具方法- #ifndef __BUFFER_H_
- #define __BUFFER_H_
-
- #include "stm32f10x.h"
-
- typedef struct
- {
- u8* buf;
- u16 size;
- u16 front;
- u16 rear;
- } BufferTypeDef;
-
- typedef struct
- {
- u8 size;
- u8 length;
- u8* data;
- } BufferClip;
-
- void Buffer_Reset(BufferTypeDef* buff);
- u16 Buffer_Length(BufferTypeDef* buff);
- u8 Buffer_Push(BufferTypeDef* buff, u8 data);
- u8 Buffer_Pop(BufferTypeDef* buff, u8* data);
- u8 Buffer_Pop_All(BufferTypeDef* buff, BufferClip* clip);
- void Buffer_Print(BufferTypeDef* buff);
- void Buffer_Print_Hex(BufferTypeDef* buff);
- void Buffer_Print_All(BufferTypeDef* buff);
-
- void Buffer_Clip_Print(BufferClip* clip);
- void Buffer_Clip_Print_Hex(BufferClip* clip);
-
- #endif
-
-
-
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "buffer.h"
-
- void Buffer_Reset(BufferTypeDef* buff)
- {
- buff->front = 0;
- buff->rear = 0;
- }
-
- u16 Buffer_Length(BufferTypeDef* buff)
- {
- if (buff->rear >= buff->front) {
- return buff->rear - buff->front;
- } else {
- return (buff->size - buff->front) + (buff->rear - 0);
- }
- }
-
- u8 Buffer_Push(BufferTypeDef* buff, u8 data)
- {
- buff->buf[buff->rear] = data;
- buff->rear++;
- if (buff->rear >= buff->size) {
- buff->rear = 0;
- }
- if (buff->front == buff->rear) {
- buff->front = (buff->front + 1) % buff->size;
- return NULL;
- } else {
- return !NULL;
- }
- }
-
- u8 Buffer_Pop(BufferTypeDef* buff, u8* data)
- {
- if (buff->front == buff->rear) return NULL;
-
- *data = buff->buf[buff->front];
- buff->front = (buff->front + 1) % buff->size;
- return !NULL;
- }
-
- u8 Buffer_Pop_All(BufferTypeDef* buff, BufferClip* clip)
- {
- if (buff->front == buff->rear) return NULL;
-
- memset(clip->data, 0x00, clip->size * sizeof(u8));
- clip->length = 0;
- if (buff->front > buff->rear) {
- while (buff->front < buff->size && clip->length <= clip->size) {
- *(clip->data + clip->length++) = buff->buf[buff->front++];
- }
- if (buff->front == buff->size) {
- buff->front = 0;
- }
- }
- while (buff->front < buff->rear && clip->length <= clip->size) {
- *(clip->data + clip->length++) = buff->buf[buff->front++];
- }
- return !NULL;
- }
-
- void Buffer_Print(BufferTypeDef* buff)
- {
- printf("BUFF:[%03d,%03d)",buff->front, buff->rear);
- if (buff->front == buff->rear) {
- // print nothing;
- } else if (buff->front < buff->rear) {
- for(int i=buff->front; i < buff->rear; i++) {
- printf("%c", buff->buf[i]);
- }
- } else {
- for(int i = buff->front; i < buff->size; i++) {
- printf("%c", buff->buf[i]);
- }
- for(int i = 0; i < buff->rear; i++) {
- printf("%c", buff->buf[i]);
- }
- }
- printf("\r\n");
- }
-
- void Buffer_Print_Hex(BufferTypeDef* buff)
- {
- printf("BUFF:[%03d,%03d)",buff->front, buff->rear);
- if (buff->front == buff->rear) {
- // print nothing;
- } else if (buff->front < buff->rear) {
- for(int i=buff->front; i<buff->rear; i++) {
- printf("%02X ", buff->buf[i]);
- }
- } else {
- for(int i=buff->front; i < buff->size; i++) {
- printf("%02X ", buff->buf[i]);
- }
- for(int i=0; i<buff->rear; i++) {
- printf("%02X ", buff->buf[i]);
- }
- }
- printf("\r\n");
- }
-
- void Buffer_Print_All(BufferTypeDef* buff)
- {
- printf("BUFF:[%d,%d)",buff->front, buff->rear);
- for(int i=0; i < buff->size; i++) {
- printf("%c", buff->buf[i]);
- }
- printf("\r\n");
- }
-
- void Buffer_Clip_Print(BufferClip* clip)
- {
- printf("CLIP:[%03d]", clip->length);
- for(int i = 0; i < clip->length; i++) {
- printf("%c", clip->data[i]);
- }
- printf("\r\n");
- }
-
- void Buffer_Clip_Print_Hex(BufferClip* clip)
- {
- printf("CLIP:[%03d]", clip->length);
- for(int i = 0; i < clip->length; i++) {
- printf("%02X ", clip->data[i]);
- }
- printf("\r\n");
- }
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