ringbuffer, helper, HAL_Driver (LL)
This commit is contained in:
15
Core/Inc/helper.h
Normal file
15
Core/Inc/helper.h
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@ -0,0 +1,15 @@
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/*
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* helper.h
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*
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* Created on: Jul 14, 2022
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* Author: tom
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*/
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#ifndef INC_HELPER_H_
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#define INC_HELPER_H_
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char *ltrim(char *s);
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char *rtrim(char *s);
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char *trim(char *s);
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#endif /* INC_HELPER_H_ */
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63
Core/Inc/ringbuf.h
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63
Core/Inc/ringbuf.h
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@ -0,0 +1,63 @@
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/*
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* ringbuf.h
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*
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* Created on: Jul 12, 2022
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* Author: tom
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*/
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#ifndef _INC_RINGBUF_H_
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#define _INC_RINGBUF_H_
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#define RING_STATISTICS_ENABLED 1
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#define RINGBUF_MAX_READ_LEN 20
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typedef enum {
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RINGBUF_PARAM_NONE = 0x00,
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RINGBUF_ALLOWOVERWRITE= 0x01,
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} ringbuf_param_t;
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#if !defined _SYS_ERRNO_H_ && !defined __ERRNO_H__ && !defined _STM32_SI5351_H_
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typedef enum {
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EPERM = 1, /*!< Operation not permitted */
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EIO = 5, /*!< I/O error */
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ENOMEM = 12, /*!< Out of memory */
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EFAULT = 14, /*!< Bad address */
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EBUSY = 16, /*!< Device or resource busy */
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ENODEV = 19, /*!< No such device */
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EINVAL = 22, /*!< Invalid argument */
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EADDRINUSE = 98,/*!< Address already in use */
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ETIMEDOUT = 116,/*!< Connection timed out */
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} ringbuf_errno_t;
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#endif
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//extern ringbuf;
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#define hring struct ringbuf *
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//receive callback typedef definition
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typedef void (*ringbuf_rcv_cb_t)(uint16_t delimiterfound, void* cb_data);
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#if !defined min
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#define min(a,b) ((a < b)? a : b)
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#endif
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hring ringbuf_create(size_t size, ringbuf_param_t param);
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void ringbuf_destroy(hring);
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int ringbuf_push(hring, const uint8_t *data, size_t size);
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int ringbuf_pull(hring, uint8_t *data, size_t maxsize);
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int ringbuf_clear(hring);
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int ringbuf_free(hring);
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int ringbuf_read(hring, char *str);
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int ringbuf_write(hring, char *str);
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int ringbuf_callback_register(hring, ringbuf_rcv_cb_t cb_func, void *cb_data);
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int ringbuf_set_max_read_len(hring, int max_read_len);
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int ringbuf_get_max_read_len(hring);
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int ringbuf_is_empty(hring);
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int ringbuf_dump(hring);
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#if RING_STATISTICS_ENABLED
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int ringbuf_statistics(hring);
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int ringbuf_stat_writes(hring);
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int ringbuf_stat_reads(hring);
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int ringbuf_stat_overflow(hring);
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#endif
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#endif /* _INC_RINGBUF_H_ */
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15
Core/Inc/ringbuf_test.h
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15
Core/Inc/ringbuf_test.h
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@ -0,0 +1,15 @@
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/*
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* ringbuf_test.h
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*
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* Created on: Jul 14, 2022
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* Author: tom
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*/
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#ifndef INC_RINGBUF_TEST_H_
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#define INC_RINGBUF_TEST_H_
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void ringbuf_test(void);
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#endif /* INC_RINGBUF_TEST_H_ */
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27
Core/Src/helper.c
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27
Core/Src/helper.c
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@ -0,0 +1,27 @@
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/*
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* helper.c
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*
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* Created on: Jul 14, 2022
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* Author: tom
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*/
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#include <string.h>
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#include <ctype.h>
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char *ltrim(char *s)
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{
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while(isspace((int)*s)) s++;
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return s;
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}
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char *rtrim(char *s)
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{
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char* back = s + strlen(s);
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while(isspace((int)*--back));
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*(back+1) = '\0';
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return s;
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}
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char *trim(char *s)
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{
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return rtrim(ltrim(s));
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}
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311
Core/Src/ringbuf.c
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311
Core/Src/ringbuf.c
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@ -0,0 +1,311 @@
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/**
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******************************************************************************
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* @file ringbuf.c
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* @brief driver for a ring buffer used for UART RX
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******************************************************************************
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* @author: Thomas Kuschel KW4NZ
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* created 2022-07-12
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*
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* A description can be found in the header file ringbuf.h
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******************************************************************************/
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#include <stdint.h>
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#include <stddef.h>
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#include <limits.h>
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#include <stdlib.h> /* malloc */
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#include <stdio.h> /* printf */
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#include <string.h> /* memcpy */
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#include "ringbuf.h"
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/* macros */
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#define MEM_USED(b) ((b->size + b->head - b->tail) % b->size)
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#define MEM_FREE(b) ((b->size + b->tail - b->head - 1) % b->size + 1)
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#if RING_STATISTICS_ENABLED
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typedef struct stat {
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uint32_t overflows;
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uint32_t reads;
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uint32_t writes;
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} stat_t;
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#endif
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typedef struct ringbuf {
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#if RING_STATISTICS_ENABLED
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stat_t statistics;
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#endif
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ringbuf_rcv_cb_t rcv_callback;
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void *rcv_cb_data;
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uint8_t *buf;
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uint16_t size;
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uint16_t head;
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uint16_t tail;
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uint16_t delimiterfound;
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uint16_t max_read_len;
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unsigned full :1; // not implemented yet
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unsigned halffull:1; // not implemented yet
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unsigned overflow:1;
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unsigned allowoverwrite:1;
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} ringbuf_t;
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struct ringbuf * ringbuf_create(size_t size, ringbuf_param_t param) {
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struct ringbuf * rb;
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if (size == 0 || size > USHRT_MAX)
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return NULL;
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// rb = malloc(sizeof(ringbuf_t) + size * sizeof(uint8_t));
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rb = calloc(1, sizeof(ringbuf_t) + size * sizeof(uint8_t));
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if (rb == NULL) {
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puts("Memory not allocated.\n");
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exit(0);
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} else {
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puts("Memory successfully allocated.\n");
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// the data area is connected to the structure
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rb->buf = (uint8_t *)rb + sizeof(ringbuf_t);
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rb->size = (uint16_t)size;
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// rb->head = rb->tail = rb->halffull = rb->overflow 0;
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if (param & RINGBUF_ALLOWOVERWRITE)
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rb->allowoverwrite = 1;
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rb->max_read_len = RINGBUF_MAX_READ_LEN;
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}
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return rb;
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}
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void ringbuf_destroy(struct ringbuf *ring) {
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if (ring != 0)
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free(ring);
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}
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int ringbuf_dump(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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printf("Buffer: 0x%08x\n", (unsigned int) ring);
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printf("Start: 0x%08x\n", (unsigned int) ring->buf);
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printf("Size: total: %d used: %d free: %d\n", ring->size, MEM_USED(ring), MEM_FREE(ring));
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printf("Head: %d\n", ring->head);
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printf("Tail: %d\n", ring->tail);
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printf("Empty: %s\n", (ring->head == ring->tail) ? "yes" : "no");
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printf("Max read length: %d\n", ring->max_read_len);
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for (size_t i = 0; i < ring->size; i += 16 ) {
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for (size_t j = 0; j < 16 && (j + i) < ring->size; j++) {
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//printf("%02x%s", *(ring->buf +i), ((i%4)==3)?(((i%16)==15)?"\n":" "):"");
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printf("%02x%s", *(ring->buf + i + j), ((j%4)==3)?" ":"");
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}
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putchar(' ');
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for (size_t j = 0; j < 16 && (j + i) < ring->size; j++) {
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uint8_t b = *(ring->buf + i + j);
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printf("%c", ((b >= ' ') && (b < 127))? b: '.');
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}
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puts("");
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}
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return 0;
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}
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int ringbuf_push(struct ringbuf *ring, const uint8_t *data, size_t size) {
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size_t delimiterpos;
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size_t delimiterfound = 0;
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uint16_t head;
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uint8_t *ptr;
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if (ring == NULL || size == 0 || data == NULL || size > USHRT_MAX)
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return -EINVAL;
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if (size >= ring->size)
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return -ENOMEM;
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if (size >= (size_t)MEM_FREE(ring)) { // no free space available, but overwrite ?
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#if RING_STATISTICS_ENABLED
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ring->statistics.overflows++;
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#endif
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if (ring->allowoverwrite)
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ring->overflow = 1;
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else
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return -ENOMEM;
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}
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head = ring->head;
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if (head + size > ring->size) {
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uint16_t remaining = ring->size - head;
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memcpy(ring->buf + head, data, remaining);
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ring->head = (uint16_t)(size - remaining);
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memcpy(ring->buf, data + remaining, ring->head);
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} else {
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memcpy(ring->buf + head, data, size);
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ring->head += (uint16_t)size;
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}
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for (delimiterpos = 0; delimiterpos < size; delimiterpos++) {
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if (data[delimiterpos] == '\n' || data[delimiterpos] == 0 ) {
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delimiterfound++;
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ptr = ring->buf + ((head + delimiterpos) % ring->size);
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*ptr = 0;
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}
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}
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ring->head %= ring->size;
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#if RING_STATISTICS_ENABLED
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ring->statistics.writes +=size;
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#endif
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ring->delimiterfound = (uint16_t)delimiterfound;
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//call registered callback function
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if (ring->delimiterfound && ring->rcv_callback != NULL)
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ring->rcv_callback(ring->delimiterfound, ring->rcv_cb_data);
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return (int)size;
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}
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int ringbuf_clear(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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ring->tail = ring->head;
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ring->full = ring->halffull = ring->overflow = 0;
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return 0;
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}
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int ringbuf_is_empty(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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return (ring->tail == ring->head);
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}
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int ringbuf_pull(struct ringbuf *ring, uint8_t *data, size_t maxsize) {
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size_t datasize;
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if (ring == NULL || maxsize == 0 || data == NULL || maxsize > USHRT_MAX)
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return -EINVAL;
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datasize = min(maxsize, (size_t)MEM_USED(ring));
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if (datasize > ring->size)
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return -ENOMEM;
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if ((ring->head > ring->tail) /*|| ring->full*/) {
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memcpy(data, ring->buf + ring->tail, datasize);
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ring->tail += (uint16_t)datasize;
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} else {
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if (ring->head < ring->tail) {
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size_t remaining = ring->size -ring->tail;
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if (datasize < remaining) {
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memcpy(data, ring->buf + ring->tail, datasize);
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ring->tail += (uint16_t)datasize;
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} else {
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memcpy(data, ring->buf + ring->tail, remaining);
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ring->tail = (uint16_t)(datasize - remaining);
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memcpy(data + remaining, ring->buf, ring->tail);
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}
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}
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}
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#if RING_STATISTICS_ENABLED
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ring->statistics.reads += datasize;
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#endif
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ring->overflow = 0;
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return (int)datasize;
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}
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int ringbuf_read(struct ringbuf *ring, char *str) {
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int len = 0;
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uint16_t tail = 0;
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if (ring == NULL || str == NULL)
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return -EINVAL;
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*str = '\0';
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if (ring->head == ring->tail){
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return 0;
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}
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tail = ring->tail;
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if (ring->head > ring->tail) {
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if (ring->max_read_len < 2)
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return -ENOMEM;
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strncpy(str, (char *)(ring->buf + ring->tail), ring->max_read_len);
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str[ring->max_read_len] = '\0';
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for (int i = ring->tail; i < ring->head; i++) {
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if (*(ring->buf + i) == 0) {
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ring->tail = (uint16_t)i + 1;
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break;
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}
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}
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if (ring->tail == tail) {
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// no \0 found
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return 0;
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}
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} else {
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int continu = 1;
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int tail = 0;
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strncpy(str, (char *)(ring->buf + ring->tail),(size_t)min(ring->size - ring->tail, ring->max_read_len));
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str[ring->max_read_len] = '\0';
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len = (int)strlen(str);
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for (int i = ring->tail; i < ring->size; i++) {
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if (*(ring->buf + i) == 0) {
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tail = i + 1;
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continu = 0;
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break;
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}
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}
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if (continu) {
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strncpy(str + ring->size - ring->tail, (char *)ring->buf, (size_t)(ring->max_read_len - ring->size + ring->tail));
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str[ring->max_read_len] = '\0';
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continu = 1;
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for (int i = 0; i < ring->head; i++) {
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if (*(ring->buf + i) == 0) {
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tail = i + 1;
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continu = 0;
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break;
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}
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}
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if (continu)
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return -EINVAL;
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}
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ring->tail = (uint16_t)tail;
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}
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len = (int)strlen(str);
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ring->tail = ring->tail % ring->size;
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#if RING_STATISTICS_ENABLED
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ring->statistics.reads += (uint32_t)len + 1;
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#endif
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return len;
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}
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int ringbuf_write(struct ringbuf *ring, char *str) {
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size_t len = 0;
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len = (size_t)strlen(str);
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if (len > 0)
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return ringbuf_push(ring, (uint8_t *)str, len + 1);
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else
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return -EINVAL;
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}
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#if RING_STATISTICS_ENABLED
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int ringbuf_statistics(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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puts("Ring Buffer Statistics:");
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printf(" Bytes written: %ld\n", ring->statistics.writes);
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printf(" Bytes read: %ld\n", ring->statistics.reads);
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printf("# of overflows: %ld\n", ring->statistics.overflows);
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return 0;
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}
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int ringbuf_stat_writes(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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return (int)ring->statistics.writes;
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}
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int ringbuf_stat_reads(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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return (int)ring->statistics.reads;
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}
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int ringbuf_stat_overflow(struct ringbuf *ring) {
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if (ring == NULL)
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return -EINVAL;
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return (int)ring->statistics.overflows;
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}
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#endif
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int ringbuf_callback_register(struct ringbuf *ring, ringbuf_rcv_cb_t cb_func, void *cb_data) {
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if (ring == NULL)
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return -EINVAL;
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ring->rcv_callback = cb_func;
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ring->rcv_cb_data = cb_data;
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return 0;
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}
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144
Core/Src/ringbuf_test.c
Normal file
144
Core/Src/ringbuf_test.c
Normal file
@ -0,0 +1,144 @@
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/*
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* ringbuf_test.c
|
||||
*
|
||||
* Created on: Jul 14, 2022
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||||
* Author: tom
|
||||
*/
|
||||
|
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#include <assert.h>
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#include <stdio.h>
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#include "ringbuf.h"
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#include <malloc.h>
|
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|
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|
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void ringbuf_test(void) {
|
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size_t usable_size = 0;
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fprintf(stderr, "\n");
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||||
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||||
malloc_stats();
|
||||
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||||
|
||||
assert(1);
|
||||
// assert(0); // ... assertion "0" failed: ...blabla bla
|
||||
//1. Test Initialization
|
||||
hring rb1 = ringbuf_create(512, RINGBUF_PARAM_NONE);
|
||||
usable_size = malloc_usable_size(rb1);
|
||||
fprintf(stdout, "Malloc Usable Size: %d\n", usable_size);
|
||||
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||||
hring rb2 = ringbuf_create(512, RINGBUF_ALLOWOVERWRITE);
|
||||
assert(rb1 != NULL);
|
||||
assert(rb2 != NULL);
|
||||
hring rb3 = ringbuf_create(512, RINGBUF_ALLOWOVERWRITE);
|
||||
hring rb4 = ringbuf_create(512, RINGBUF_ALLOWOVERWRITE);
|
||||
|
||||
|
||||
printf("Malloc Usable Size of rb1: %d\n", malloc_usable_size(rb1));
|
||||
printf("Malloc Usable Size of rb2: %d\n", malloc_usable_size(rb2));
|
||||
printf("Malloc Usable Size of rb3: %d\n", malloc_usable_size(rb3));
|
||||
printf("Malloc Usable Size of rb4: %d\n", malloc_usable_size(rb4));
|
||||
|
||||
ringbuf_destroy(rb4);
|
||||
malloc_stats();
|
||||
ringbuf_destroy(rb3);
|
||||
malloc_stats();
|
||||
|
||||
malloc_stats();
|
||||
ringbuf_destroy(rb2);
|
||||
malloc_stats();
|
||||
ringbuf_destroy(rb1);
|
||||
malloc_stats();
|
||||
|
||||
printf("rb1 after destroy is: 0x%08X\n", rb1);
|
||||
|
||||
|
||||
}
|
||||
|
||||
#if 0
|
||||
volatile int ret = 0;
|
||||
ring = ringbuf_create(64,RINGBUF_ALLOWOVERWRITE);
|
||||
if (ring == NULL)
|
||||
printf("we have some problems ...\n");
|
||||
|
||||
uint8_t data[1024];
|
||||
char str[1024]={0};
|
||||
|
||||
strcpy(str, "KW4NZ");
|
||||
|
||||
ret = ringbuf_dump(ring);
|
||||
ret = ringbuf_write(ring, str);
|
||||
printf("Writing string: %s\n", str);
|
||||
ret = ringbuf_dump(ring);
|
||||
ret = ringbuf_push(ring, (uint8_t *)"Ich gehe spazieren.", sizeof("Ich gehe spazieren."));
|
||||
ret = ringbuf_dump(ring);
|
||||
ret = ringbuf_push(ring, (uint8_t *)"NOCHMALS GEHE ICH RAUS.", sizeof("NOCHMALS GEHE ICH RAUS."));
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s\n", str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s\n", str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s\n", str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
strcpy(str, "OE3TKT,OE1TKT,OE7TKT");
|
||||
ret = ringbuf_write(ring, str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s\n", str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
strcpy(str, "OE1TKT,OE3TKT,OE7TKT");
|
||||
ret = ringbuf_write(ring, str);
|
||||
strcpy(str, "KW4NZ");
|
||||
ret = ringbuf_write(ring, str);
|
||||
ret = ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s (OE1TKT,OE3TKT,OE7TKT)\n", str);
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("STRING: %s (KW4NZ)\n", str);
|
||||
|
||||
ret = ringbuf_pull(ring, data, 1024);
|
||||
printf("Read %d bytes...\n", ret);
|
||||
for (int i = 0; i < ret; i++)
|
||||
putchar(data[i]);
|
||||
puts("");
|
||||
|
||||
ringbuf_dump(ring);
|
||||
|
||||
ret = ringbuf_push(ring, (uint8_t *)"Eine 128-tägige Reise ist zu gewinnen!", sizeof("Eine 128-tägige Reise ist zu gewinnen!"));
|
||||
ringbuf_dump(ring);
|
||||
|
||||
// ret = ringbuf_push(ring, (uint8_t *)"Eine 100-tägige Reise ist zu gewinnen!", sizeof("Eine 128-tägige Reise ist zu gewinnen!"));
|
||||
// ret = ringbuf_push(ring, (uint8_t *)"Eine 90-tägige Reise ist zu gewinnen!", sizeof("Eine 90-tägige Reise ist zu gewinnen!"));
|
||||
ret = ringbuf_push(ring, (uint8_t *)"ENDENDENDENDEND", sizeof("ENDENDENDENDEND"));
|
||||
ringbuf_dump(ring);
|
||||
ret = ringbuf_push(ring, (uint8_t *)"Vereinbarungen treffen zu.", sizeof("Vereinbarungen treffen zu."));
|
||||
ringbuf_dump(ring);
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("String: %s (length: %d)\n", str, ret);
|
||||
ret = ringbuf_dump(ring);
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("String: %s (length: %d)\n", str, ret);
|
||||
ret = ringbuf_read(ring, str);
|
||||
printf("String: %s (length: %d)\n", str, ret);
|
||||
|
||||
ret = ringbuf_pull(ring, data, 1024);
|
||||
printf("Read %d bytes...\n", ret);
|
||||
for (int i = 0; i < ret; i++)
|
||||
putchar(data[i]);
|
||||
puts("");
|
||||
ringbuf_dump(ring);
|
||||
|
||||
ringbuf_clear(ring);
|
||||
ringbuf_dump(ring);
|
||||
#if RING_STATISTICS_ENABLED
|
||||
ringbuf_statistics(ring);
|
||||
#endif
|
||||
#endif
|
||||
Reference in New Issue
Block a user