131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
// SPDX-License-Identifier: Apache-2.0
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// Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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/** Includes **/
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#include "common.h"
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#include "esp_log.h"
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#include <stdlib.h>
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#include <errno.h>
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#if 0
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DEFINE_LOG_TAG(utils);
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#endif
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/** Constants/Macros **/
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/** Exported variables **/
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/** Function declaration **/
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/** Exported Functions **/
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/**
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* @brief debug buffer print
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* @param buff - input buffer to print in hex
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* rx_len - buff len
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* human_str - helping string to describe about buffer
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* @retval None
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*/
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#if DEBUG_HEX_STREAM_PRINT
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char print_buff[MAX_SPI_BUFFER_SIZE*3];
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#endif
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uint16_t hton_short (uint16_t x)
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{
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#if BYTE_ORDER == BIG_ENDIAN
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return x;
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#elif BYTE_ORDER == LITTLE_ENDIAN
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uint16_t val = 0;
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val = (x &0x00FF)<<8;
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val |= (x &0xFF00)>>8;
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return val;
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#else
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# error "not able to identify endianness"
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#endif
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}
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uint32_t hton_long (uint32_t x)
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{
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#if BYTE_ORDER == BIG_ENDIAN
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return x;
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#elif BYTE_ORDER == LITTLE_ENDIAN
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uint32_t val = (x&0xFF000000) >> 24;
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val |= (x&0x00FF0000) >> 8;
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val |= (x&0x0000FF00) << 8;
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val |= (x&0x000000FF) << 24;
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return val;
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#else
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# error "not able to identify endianness"
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#endif
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}
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/**
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* @brief Calculate minimum
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* @param x - number
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* y - number
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* @retval minimum
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*/
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int min(int x, int y) {
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return (x < y) ? x : y;
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}
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#if 0
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/**
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* @brief get numbers from string
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* @param val - return integer value,
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* arg - input string
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* @retval STM_OK on success, else STM_FAIL
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*/
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int get_num_from_string(int *val, char *arg)
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{
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int base = 10;
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char *endptr = NULL, *str = NULL;
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if (!arg || (arg[0]=='\0')) {
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ESP_LOGE(TAG, "No number Identified \n");
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return STM_FAIL;
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}
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if (!val) {
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ESP_LOGE(TAG, "No memory allocated \n");
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return STM_FAIL;
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}
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errno = 0;
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str = arg;
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*val = strtol(str, &endptr, base);
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if (endptr == str) {
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ESP_LOGE(TAG, "No digits found \n");
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*val = 0;
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return STM_FAIL;
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}
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if ((errno == ERANGE) && ((*val == INT32_MAX) || (*val == INT32_MIN))) {
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perror("strtol");
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*val = 0;
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return STM_FAIL;
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}
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return STM_OK;
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}
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#endif
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/** Local functions **/
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