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linear-Slide/Middleware/CANopenNode/301/CO_fifo.c

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第一版代码，为了在EEPROM保存参数的时候走STM32的CRC，让Codex修改了一下，现在的效果是无法存储，codex表示原因是CRC方法不同，修改到一半今天的额度使用完了，有待后续解决CRC的bug
2026-02-28 17:36:05 +08:00
/*
* FIFO circular buffer
*
* @file CO_fifo.c
* @ingroup CO_CANopen_309_fifo
* @author Janez Paternoster
* @copyright 2020 Janez Paternoster
*
* This file is part of <https://github.com/CANopenNode/CANopenNode>, a CANopen Stack.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
* file except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and limitations under the License.
*/
#include <string.h>
#include "301/CO_fifo.h"
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ENABLE) != 0
#include <ctype.h>
#include <stdlib.h>
#include "crc16-ccitt.h"
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ASCII_COMMANDS) != 0
#include <stdio.h>
#include <inttypes.h>
/* Non-graphical character for command delimiter */
#define DELIM_COMMAND ((uint8_t)'\n')
/* Graphical character for comment delimiter */
#define DELIM_COMMENT ((uint8_t)'#')
/* Graphical character for double quotes */
#define DELIM_DQUOTE ((uint8_t)'"')
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS */
/* verify configuration */
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_CRC16_CCITT) != 0
#if ((CO_CONFIG_CRC16)&CO_CONFIG_CRC16_ENABLE) == 0
#error CO_CONFIG_CRC16_ENABLE must be enabled.
#endif
#endif
void
CO_fifo_init(CO_fifo_t* fifo, uint8_t* buf, size_t bufSize) {
if ((fifo == NULL) || (buf == NULL) || (bufSize < 2U)) {
return;
}
fifo->readPtr = 0;
fifo->writePtr = 0;
fifo->buf = buf;
fifo->bufSize = bufSize;
return;
}
/* Circular FIFO buffer example for fifo->bufSize = 7 (usable size = 6): ******
* *
* 0 * * * * *
* 1 rp==wp readPtr writePtr * *
* 2 * * * * *
* 3 * * * writePtr *
* 4 * writePtr readPtr readPtr *
* 5 * * * * *
* 6 * * * * *
* *
* empty 3 bytes 4 bytes buffer *
* buffer in buff in buff full *
******************************************************************************/
size_t
CO_fifo_write(CO_fifo_t* fifo, const uint8_t* buf, size_t count, uint16_t* crc) {
size_t i;
uint8_t* bufDest;
if ((fifo == NULL) || (fifo->buf == NULL) || (buf == NULL)) {
return 0;
}
bufDest = &fifo->buf[fifo->writePtr];
for (i = count; i > 0U; i--) {
size_t writePtrNext = fifo->writePtr + 1U;
/* is circular buffer full */
if ((writePtrNext == fifo->readPtr) || ((writePtrNext == fifo->bufSize) && (fifo->readPtr == 0U))) {
break;
}
*bufDest = *buf;
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_CRC16_CCITT) != 0
if (crc != NULL) {
crc16_ccitt_single(crc, *buf);
}
#endif
/* increment variables */
if (writePtrNext == fifo->bufSize) {
fifo->writePtr = 0;
bufDest = &fifo->buf[0];
} else {
fifo->writePtr++;
bufDest++;
}
buf++;
}
return count - i;
}
size_t
CO_fifo_read(CO_fifo_t* fifo, uint8_t* buf, size_t count, bool_t* eof) {
size_t i;
const uint8_t* bufSrc;
bool_t alive_cycle = true;
if (eof != NULL) {
*eof = false;
}
if ((fifo == NULL) || (buf == NULL) || (fifo->readPtr == fifo->writePtr)) {
return 0;
}
bufSrc = &fifo->buf[fifo->readPtr];
for (i = count; (i > 0U) && alive_cycle;) {
const uint8_t c = *bufSrc;
/* is circular buffer empty */
if (fifo->readPtr == fifo->writePtr) {
alive_cycle = false;
} else {
*buf = c;
buf++;
/* increment variables */
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
bufSrc = &fifo->buf[0];
} else {
bufSrc++;
}
i--;
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ASCII_COMMANDS) != 0
/* is delimiter? */
if ((eof != NULL) && (c == DELIM_COMMAND)) {
*eof = true;
alive_cycle = false;
}
#endif
}
}
return count - i;
}
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ALT_READ) != 0
size_t
CO_fifo_altBegin(CO_fifo_t* fifo, size_t offset) {
size_t i;
if (fifo == NULL) {
return 0;
}
fifo->altReadPtr = fifo->readPtr;
for (i = offset; i > 0U; i--) {
/* is circular buffer empty */
if (fifo->altReadPtr == fifo->writePtr) {
break;
}
/* increment variable */
if (++fifo->altReadPtr == fifo->bufSize) {
fifo->altReadPtr = 0;
}
}
return offset - i;
}
void
CO_fifo_altFinish(CO_fifo_t* fifo, uint16_t* crc) {
if (fifo == NULL) {
return;
}
if (crc == NULL) {
fifo->readPtr = fifo->altReadPtr;
} else {
const uint8_t* bufSrc = &fifo->buf[fifo->readPtr];
while (fifo->readPtr != fifo->altReadPtr) {
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_CRC16_CCITT) != 0
crc16_ccitt_single(crc, *bufSrc);
#endif
/* increment variable */
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
bufSrc = &fifo->buf[0];
} else {
bufSrc++;
}
}
}
}
size_t
CO_fifo_altRead(CO_fifo_t* fifo, uint8_t* buf, size_t count) {
size_t i;
const uint8_t* bufSrc;
bufSrc = &fifo->buf[fifo->altReadPtr];
for (i = count; i > 0U; i--) {
const uint8_t c = *bufSrc;
/* is there no more data */
if (fifo->altReadPtr == fifo->writePtr) {
break;
}
*buf = c;
buf++;
/* increment variables */
if (++fifo->altReadPtr == fifo->bufSize) {
fifo->altReadPtr = 0;
bufSrc = &fifo->buf[0];
} else {
bufSrc++;
}
}
return count - i;
}
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ALT_READ */
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ASCII_COMMANDS) != 0
bool_t
CO_fifo_CommSearch(CO_fifo_t* fifo, bool_t clear) {
bool_t newCommand = false;
size_t count;
uint8_t* commandEnd;
if ((fifo == NULL) || (fifo->readPtr == fifo->writePtr)) {
return false;
}
/* search delimiter until writePtr or until end of buffer */
if (fifo->readPtr < fifo->writePtr) {
count = fifo->writePtr - fifo->readPtr;
} else {
count = fifo->bufSize - fifo->readPtr;
}
commandEnd = (uint8_t*)memchr((const void*)&fifo->buf[fifo->readPtr], (int32_t)DELIM_COMMAND, count);
if (commandEnd != NULL) {
newCommand = true;
} else if (fifo->readPtr > fifo->writePtr) {
/* not found, search in the beginning of the circular buffer */
commandEnd = (uint8_t*)memchr((const void*)&fifo->buf[0], (int32_t)DELIM_COMMAND, fifo->writePtr);
if ((commandEnd != NULL) || (fifo->readPtr == (fifo->writePtr + 1U))) {
/* command delimiter found or buffer full */
newCommand = true;
}
} else if ((fifo->readPtr == 0U) && (fifo->writePtr == (fifo->bufSize - 1U))) {
/* buffer full */
newCommand = true;
} else { /* MISRA C 2004 14.10 */
}
/* Clear buffer if set so */
if (clear) {
if (commandEnd != NULL) {
fifo->readPtr = ((size_t)commandEnd - (size_t)fifo->buf) + 1U;
if (fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
} else {
fifo->readPtr = fifo->writePtr;
}
}
return newCommand;
}
bool_t
CO_fifo_trimSpaces(CO_fifo_t* fifo, bool_t* insideComment) {
bool_t delimCommandFound = false;
bool_t alive_cycle = true;
if ((fifo != NULL) && (insideComment != NULL)) {
while ((fifo->readPtr != fifo->writePtr) && alive_cycle) {
uint8_t c = fifo->buf[fifo->readPtr];
if (c == DELIM_COMMENT) {
*insideComment = true;
} else if ((isgraph((int)c) != 0) && !(*insideComment)) {
alive_cycle = false;
} else { /* MISRA C 2004 14.10 */
}
if (alive_cycle) {
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
if (c == DELIM_COMMAND) {
delimCommandFound = true;
*insideComment = false;
alive_cycle = false;
}
}
}
}
return delimCommandFound;
}
size_t
CO_fifo_readToken(CO_fifo_t* fifo, char* buf, size_t count, uint8_t* closed, bool_t* err) {
bool_t delimCommandFound = false;
bool_t delimCommentFound = false;
size_t tokenSize = 0;
if ((fifo != NULL) && (buf != NULL) && (count > 1U) && ((err == NULL) || (*err == false))
&& (fifo->readPtr != fifo->writePtr)) {
bool_t finished = false;
uint8_t step = 0;
size_t ptr = fifo->readPtr; /* current pointer (integer, 0 based) */
uint8_t* c = &fifo->buf[ptr]; /* current character */
do {
switch (step) {
case 0: /* skip leading empty characters, stop on delimiter */
if (isgraph((int)*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else {
buf[tokenSize] = (char)*c;
tokenSize++;
step++;
}
} else if (*c == DELIM_COMMAND) {
delimCommandFound = true;
} else { /* MISRA C 2004 14.10 */
}
break;
case 1: /* search for end of the token */
if (isgraph((int)*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else if (tokenSize < count) {
buf[tokenSize] = (char)*c;
tokenSize++;
} else { /* MISRA C 2004 14.10 */
}
} else {
if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
step++;
}
break;
case 2: /* skip trailing empty characters */
if (isgraph((int)*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else {
fifo->readPtr = ptr;
finished = true;
}
} else if (*c == DELIM_COMMAND) {
delimCommandFound = true;
} else { /* MISRA C 2004 14.10 */
}
break;
default:
/* MISRA C 2004 15.3 */
break;
}
if (delimCommentFound == true) {
/* Comment delimiter found, clear all till end of the line. */
fifo->readPtr = ptr;
delimCommandFound = CO_fifo_CommSearch(fifo, true);
finished = true;
} else if (delimCommandFound) {
/* command delimiter found, set readPtr behind it. */
if (++ptr == fifo->bufSize) {
ptr = 0;
}
fifo->readPtr = ptr;
finished = true;
} else if (!finished) {
/* find next character in the circular buffer */
if (++ptr == fifo->bufSize) {
ptr = 0;
c = &fifo->buf[ptr];
} else {
c++;
}
/* end, if buffer is now empty */
if (ptr == fifo->writePtr) {
if (step == 2U) {
fifo->readPtr = ptr;
} else {
tokenSize = 0;
}
finished = true;
}
} else { /* MISRA C 2004 14.10 */
}
} while (!finished);
}
/* set 'err' return value */
if ((err != NULL) && (*err == false)) {
if ((tokenSize == count)
|| ((closed != NULL)
&& (((*closed == 1U) && (!delimCommandFound || (tokenSize == 0U)))
|| ((*closed == 0U) && (delimCommandFound || (tokenSize == 0U)))))) {
*err = true;
}
}
/* set 'closed' return value */
if (closed != NULL) {
*closed = delimCommandFound ? 1U : 0U;
}
/* token was larger then size of the buffer, all was cleaned, return empty */
if (tokenSize == count) {
tokenSize = 0;
}
/* write string terminator character */
if ((buf != NULL) && (count > tokenSize)) {
buf[tokenSize] = '\0';
}
return tokenSize;
}
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS */
#if ((CO_CONFIG_FIFO)&CO_CONFIG_FIFO_ASCII_DATATYPES) != 0
/* Tables for mime-base64 encoding, as specified in RFC 2045, (without CR-LF, but one long string).
* Base64 is used for encoding binary data into easy transferable printable characters. In general,
* each three bytes of binary data are translated into four characters, where characters are
* selected from 64 characters long table. See https://en.wikipedia.org/wiki/Base64 */
static const char base64EncTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const uint8_t base64DecTable[] = {
255, 255, 255, 255, 255, 255, 255, 255, 255, 103, 101, 255, 255, 102, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 103, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62,
255, 255, 255, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 100, 255, 255, 255, 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 255, 255, 255, 255, 255, 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 255, 255, 255, 255, 255};
size_t
CO_fifo_readU82a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint8_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 6U)) {
(void)CO_fifo_read(fifo, &n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRIu8, n);
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readU162a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint16_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 8U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRIu16, CO_SWAP_16(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readU322a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint32_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 12U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRIu32, CO_SWAP_32(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readU642a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint64_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 20U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRIu64, CO_SWAP_64(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readX82a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint8_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 6U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "0x%02" PRIX8, (uint32_t)n);
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readX162a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint16_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 8U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "0x%04" PRIX16, (uint32_t)CO_SWAP_16(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readX322a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint32_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 12U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "0x%08" PRIX32, CO_SWAP_32(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readX642a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
uint64_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 20U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "0x%016" PRIX64, CO_SWAP_64(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readI82a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
int8_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 6U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRId8, n);
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readI162a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
int16_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 8U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRId16, CO_SWAP_16(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readI322a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
int32_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 13U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRId32, CO_SWAP_32(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readI642a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
int64_t n = 0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 23U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%" PRId64, CO_SWAP_64(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readR322a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
float32_t n = (float32_t)0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 20U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%g", (float32_t)CO_SWAP_32(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readR642a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
float64_t n = (float64_t)0;
if (fifo == NULL) {
return 0;
}
if ((CO_fifo_getOccupied(fifo) == sizeof(n)) && (count >= 30U)) {
(void)CO_fifo_read(fifo, (uint8_t*)&n, sizeof(n), NULL);
return (size_t)sprintf(buf, "%g", (float64_t)CO_SWAP_64(n));
} else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t
CO_fifo_readHex2a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
(void)end; /* unused */
size_t len = 0;
if ((fifo != NULL) && (count > 3U)) {
/* Very first write is without leading space */
if (!fifo->started) {
uint8_t c;
if (CO_fifo_getc(fifo, &c)) {
len = (size_t)sprintf(&buf[0], "%02" PRIX8, (uint32_t)c);
fifo->started = true;
}
}
while ((len + 3U) < count) {
uint8_t c;
if (!CO_fifo_getc(fifo, &c)) {
break;
}
len += (size_t)sprintf(&buf[len], " %02" PRIX8, (uint32_t)c);
}
}
return len;
}
size_t
CO_fifo_readVs2a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
size_t len = 0;
if ((fifo != NULL) && (count > 3U)) {
/* Start with '"' */
if (!fifo->started) {
buf[len] = '"';
len++;
fifo->started = true;
}
while ((len + 2U) < count) {
uint8_t c;
if (!CO_fifo_getc(fifo, &c)) {
if (end) {
buf[len] = '"';
len++;
}
break;
} else if ((c != 0U) && (c != (uint8_t)'\r')) {
/* skip null and CR inside string */
buf[len] = (char)c;
len++;
if (c == DELIM_DQUOTE) {
buf[len] = '"';
len++;
}
} else { /* MISRA C 2004 14.10 */
}
}
}
return len;
}
size_t
CO_fifo_readB642a(CO_fifo_t* fifo, char* buf, size_t count, bool_t end) {
/* mime-base64 encoding, see description above base64EncTable */
size_t len = 0;
if ((fifo != NULL) && (count >= 4U)) {
uint8_t step;
uint16_t word;
if (!fifo->started) {
fifo->started = true;
step = 0;
word = 0;
} else {
/* get memorized variables from previous function calls */
step = (uint8_t)(fifo->aux >> 16);
word = (uint16_t)fifo->aux;
}
while ((len + 3U) <= count) {
uint8_t c;
if (!CO_fifo_getc(fifo, &c)) {
/* buffer is empty, is also SDO communication finished? */
if (end) {
/* add padding if necessary */
switch (step) {
case 1:
buf[len] = base64EncTable[(word >> 4) & 0x3FU];
len++;
buf[len] = '=';
len++;
buf[len] = '=';
len++;
break;
case 2:
buf[len] = base64EncTable[(word >> 6) & 0x3FU];
len++;
buf[len] = '=';
len++;
break;
default:
/* MISRA C 2004 15.3 */
break;
}
}
break;
}
word |= c;
switch (step++) {
case 0:
buf[len] = base64EncTable[(word >> 2) & 0x3FU];
len++;
break;
case 1:
buf[len] = base64EncTable[(word >> 4) & 0x3FU];
len++;
break;
default:
buf[len] = base64EncTable[(word >> 6) & 0x3FU];
len++;
buf[len] = base64EncTable[word & 0x3FU];
len++;
step = 0;
break;
}
word <<= 8;
}
/* memorize variables for next iteration */
fifo->aux = ((uint32_t)step << 16) | word;
}
return len;
}
size_t
CO_fifo_cpyTok2U8(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if ((sRet != strchr(buf, (int32_t)('\0'))) || (u32 > (uint32_t)UINT8_MAX)) {
st |= CO_fifo_st_errVal;
} else {
uint8_t num = (uint8_t)u32;
nWr = CO_fifo_write(dest, &num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2U16(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if ((sRet != strchr(buf, (int32_t)('\0'))) || (u32 > (uint32_t)UINT16_MAX)) {
st |= CO_fifo_st_errVal;
} else {
uint16_t num = CO_SWAP_16((uint16_t)u32);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2U32(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
uint32_t num = CO_SWAP_32(u32);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2U64(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[25];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
uint64_t u64 = strtoull(buf, &sRet, 0);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
uint64_t num = CO_SWAP_64(u64);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = (uint8_t)st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2I8(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if ((sRet != strchr(buf, (int32_t)('\0'))) || (i32 < INT8_MIN) || (i32 > INT8_MAX)) {
st |= CO_fifo_st_errVal;
} else {
int8_t num = (int8_t)i32;
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2I16(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if ((sRet != strchr(buf, (int32_t)('\0'))) || (i32 < INT16_MIN) || (i32 > INT16_MAX)) {
st |= CO_fifo_st_errVal;
} else {
int16_t num = CO_SWAP_16((int16_t)i32);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2I32(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[15];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
int32_t num = CO_SWAP_32(i32);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2I64(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[25];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
int64_t i64 = strtoll(buf, &sRet, 0);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
int64_t num = CO_SWAP_64(i64);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = (uint8_t)st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2R32(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[30];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
float32_t f32 = strtof(buf, &sRet);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
float32_t num = CO_SWAP_32(f32);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2R64(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
char buf[40];
uint8_t closed = 0xFFU;
bool_t err = false;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
uint8_t st = closed;
if ((nRd == 0U) || err) {
st |= CO_fifo_st_errTok;
} else {
char* sRet;
float64_t f64 = strtof(buf, &sRet);
if (sRet != strchr(buf, (int32_t)('\0'))) {
st |= CO_fifo_st_errVal;
} else {
float64_t num = CO_SWAP_64(f64);
nWr = CO_fifo_write(dest, (uint8_t*)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) {
st |= CO_fifo_st_errBuf;
}
}
}
if (status != NULL) {
*status = st;
}
return nWr;
}
size_t
CO_fifo_cpyTok2Hex(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
size_t destSpace, destSpaceStart;
bool_t finished = false;
uint8_t step;
uint8_t firstChar;
uint8_t st = 0;
if ((dest == NULL) || (src == NULL)) {
return 0;
}
/* get free space of the dest fifo */
destSpaceStart = CO_fifo_getSpace(dest);
destSpace = destSpaceStart;
/* is this the first write into dest? */
if (!dest->started) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
firstChar = 0;
} else {
/* get memorized variables from previous function calls */
step = (uint8_t)(dest->aux >> 8);
firstChar = (uint8_t)(dest->aux & 0xFFU);
}
/* repeat until destination space available and no error and not finished
* and source characters available */
while ((destSpace > 0U) && ((st & CO_fifo_st_errMask) == 0U) && !finished) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
if (step == 6U) {
/* command is inside comment, waiting for command delimiter */
bool_t insideComment = true;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
}
continue;
}
if ((int32_t)(isxdigit((int32_t)c)) != 0) {
/* first or second hex digit */
if (step == 0U) {
firstChar = c;
step = 1;
} else {
/* write the byte */
uint8_t s[3];
int32_t num;
s[0] = firstChar;
s[1] = c;
s[2] = 0;
num = strtol((char*)&s[0], NULL, 16);
(void)CO_fifo_putc(dest, (uint8_t)num);
destSpace--;
step = 0;
}
} else if ((int32_t)(isgraph((int32_t)c)) != 0) {
/* printable character, not hex digit */
if (c == DELIM_COMMENT) { /* comment start */
step = 6;
} else { /* syntax error */
st |= CO_fifo_st_errTok;
}
} else {
/* this is space or delimiter */
if (step == 1U) {
/* write the byte */
uint8_t s[2];
int32_t num;
s[0] = firstChar;
s[1] = 0;
num = strtol((char*)&s[0], NULL, 16);
(void)CO_fifo_putc(dest, (uint8_t)num);
destSpace--;
step = 0;
}
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
/* newline found, finish */
st |= CO_fifo_st_closed;
finished = true;
} else if (insideComment) {
step = 6;
} else { /* MISRA C 2004 14.10 */
}
}
} /* while ... */
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = ((uint32_t)step << 8) | firstChar;
}
if (status != NULL) {
*status = st;
}
return destSpaceStart - destSpace;
}
size_t
CO_fifo_cpyTok2Vs(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
size_t destSpace, destSpaceStart;
bool_t finished = false;
uint8_t step;
uint8_t st = 0;
if ((dest == NULL) || (src == NULL)) {
return 0;
}
/* get free space of the dest fifo */
destSpaceStart = CO_fifo_getSpace(dest);
destSpace = destSpaceStart;
/* is this the first write into dest? */
if (!dest->started) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
} else {
/* get memorized variables from previous function calls */
step = (uint8_t)dest->aux;
}
/* repeat until destination space available and no error and not finished and source characters available */
while ((destSpace > 0U) && ((st & CO_fifo_st_errMask) == 0U) && !finished) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
switch (step) {
case 0: /* beginning of the string, first write into dest */
if (c == DELIM_DQUOTE) {
/* Indicated beginning of the string, skip this character. */
step = 1;
} else {
/* this must be a single word string without '"' */
/* copy the character */
(void)CO_fifo_putc(dest, c);
destSpace--;
step = 2;
}
break;
case 1: /* inside string, quoted string */
case 2: /* inside string, single word, no quotes */
if (c == DELIM_DQUOTE) {
/* double quote found, this may be end of the string or escaped
* double quote (with two double quotes) */
step += 2U;
} else if ((isgraph((int)c) == 0) && (step == 2U)) {
/* end of single word string */
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
} else {
step = insideComment ? 6U : 5U;
}
} else if (c == DELIM_COMMAND) {
/* no closing quote, error */
st |= CO_fifo_st_errTok;
} else {
/* copy the character */
(void)CO_fifo_putc(dest, c);
destSpace--;
}
break;
case 3: /* previous was double quote, parsing quoted string */
case 4: /* previous was double quote, parsing no quoted word */
if (c == DELIM_DQUOTE) {
/* escaped double quote, copy the character and continue */
(void)CO_fifo_putc(dest, c);
destSpace--;
step -= 2U;
} else {
/* previous character was closing double quote */
if (step == 4U) {
/* no opening double quote, syntax error */
st |= CO_fifo_st_errTok;
} else {
if (isgraph((int)c) == 0) {
/* end of quoted string */
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
} else {
step = insideComment ? 6U : 5U;
}
} else {
/* space must follow closing double quote, error */
st |= CO_fifo_st_errTok;
}
}
}
break;
case 5: { /* String token is finished, waiting for command delimiter */
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
} else if (insideComment) {
step = 6;
} else if (isgraph((int)c) != 0) {
if (c == DELIM_COMMENT) { /* comment start */
step = 6;
} else { /* syntax error */
st |= CO_fifo_st_errTok;
}
} else { /* MISRA C 2004 14.10 */
}
break;
}
case 6: { /* String token is finished, waiting for command delimiter */
bool_t insideComment = true;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
}
break;
}
default: /* internal error */ st |= CO_fifo_st_errInt; break;
}
}
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = step;
}
if (status != NULL) {
*status = st;
}
return destSpaceStart - destSpace;
}
size_t
CO_fifo_cpyTok2B64(CO_fifo_t* dest, CO_fifo_t* src, uint8_t* status) {
/* mime-base64 decoding, see description above base64EncTable */
size_t destSpace, destSpaceStart;
bool_t finished = false;
uint8_t step;
uint32_t dword;
uint8_t st = 0;
if ((dest == NULL) || (src == NULL)) {
return 0;
}
/* get free space of the dest fifo */
destSpaceStart = CO_fifo_getSpace(dest);
destSpace = destSpaceStart;
/* is this the first write into dest? */
if (!dest->started) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
dword = 0;
} else {
/* get memorized variables from previous function calls */
step = (uint8_t)(dest->aux >> 24);
dword = dest->aux & 0xFFFFFFU;
}
/* repeat until destination space available and no error and not finished and source characters available */
while ((destSpace >= 3U) && ((st & CO_fifo_st_errMask) == 0U) && !finished) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
if (step >= 5U) {
/* String token is finished, waiting for command delimiter */
bool_t insideComment = step > 5U;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
} else if (insideComment) {
step = 6;
} else if ((isgraph((int)c) != 0) && (c != (uint8_t)'=')) {
if (c == DELIM_COMMENT) { /* comment start */
step = 6;
} else { /* syntax error */
st |= CO_fifo_st_errTok;
}
} else { /* MISRA C 2004 14.10 */
}
continue;
}
uint8_t code = base64DecTable[c & 0x7FU];
if (((c & 0x80U) != 0U) || ((code & 0x80U) != 0U)) {
st |= CO_fifo_st_errTok;
} else if (code >= 64U /* '=' (pad) or DELIM_COMMAND or space */) {
/* base64 string finished, write remaining bytes */
switch (step) {
case 2:
(void)CO_fifo_putc(dest, (uint8_t)(dword >> 4));
destSpace--;
break;
case 3:
(void)CO_fifo_putc(dest, (uint8_t)(dword >> 10));
(void)CO_fifo_putc(dest, (uint8_t)(dword >> 2));
destSpace -= 2U;
break;
default:
/* MISRA C 2004 15.3 */
break;
}
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || (c == DELIM_COMMAND)) {
st |= CO_fifo_st_closed;
finished = true;
} else {
step = insideComment ? 6U : 5U;
}
} else {
dword = (dword << 6) | code;
if (step++ == 3U) {
(void)CO_fifo_putc(dest, (uint8_t)((dword >> 16) & 0xFFU));
(void)CO_fifo_putc(dest, (uint8_t)((dword >> 8) & 0xFFU));
(void)CO_fifo_putc(dest, (uint8_t)(dword & 0xFFU));
destSpace -= 3U;
dword = 0;
step = 0;
}
}
} /* while ... */
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = ((uint32_t)step << 24) | (dword & 0xFFFFFFU);
}
if (status != NULL) {
*status = st;
}
return destSpaceStart - destSpace;
}
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_DATATYPES */
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ENABLE */
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