102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2018, Sensirion AG
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* * Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* * Neither the name of Sensirion AG nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "sensirion_common.h"
|
|
#include "sensirion_config.h"
|
|
|
|
uint16_t sensirion_common_bytes_to_uint16_t(const uint8_t* bytes) {
|
|
return (uint16_t)bytes[0] << 8 | (uint16_t)bytes[1];
|
|
}
|
|
|
|
uint32_t sensirion_common_bytes_to_uint32_t(const uint8_t* bytes) {
|
|
return (uint32_t)bytes[0] << 24 | (uint32_t)bytes[1] << 16 |
|
|
(uint32_t)bytes[2] << 8 | (uint32_t)bytes[3];
|
|
}
|
|
|
|
int16_t sensirion_common_bytes_to_int16_t(const uint8_t* bytes) {
|
|
return (int16_t)sensirion_common_bytes_to_uint16_t(bytes);
|
|
}
|
|
|
|
int32_t sensirion_common_bytes_to_int32_t(const uint8_t* bytes) {
|
|
return (int32_t)sensirion_common_bytes_to_uint32_t(bytes);
|
|
}
|
|
|
|
float sensirion_common_bytes_to_float(const uint8_t* bytes) {
|
|
union {
|
|
uint32_t u32_value;
|
|
float float32;
|
|
} tmp;
|
|
|
|
tmp.u32_value = sensirion_common_bytes_to_uint32_t(bytes);
|
|
return tmp.float32;
|
|
}
|
|
|
|
void sensirion_common_uint32_t_to_bytes(const uint32_t value, uint8_t* bytes) {
|
|
bytes[0] = value >> 24;
|
|
bytes[1] = value >> 16;
|
|
bytes[2] = value >> 8;
|
|
bytes[3] = value;
|
|
}
|
|
|
|
void sensirion_common_uint16_t_to_bytes(const uint16_t value, uint8_t* bytes) {
|
|
bytes[0] = value >> 8;
|
|
bytes[1] = value;
|
|
}
|
|
|
|
void sensirion_common_int32_t_to_bytes(const int32_t value, uint8_t* bytes) {
|
|
bytes[0] = value >> 24;
|
|
bytes[1] = value >> 16;
|
|
bytes[2] = value >> 8;
|
|
bytes[3] = value;
|
|
}
|
|
|
|
void sensirion_common_int16_t_to_bytes(const int16_t value, uint8_t* bytes) {
|
|
bytes[0] = value >> 8;
|
|
bytes[1] = value;
|
|
}
|
|
|
|
void sensirion_common_float_to_bytes(const float value, uint8_t* bytes) {
|
|
union {
|
|
uint32_t u32_value;
|
|
float float32;
|
|
} tmp;
|
|
tmp.float32 = value;
|
|
sensirion_common_uint32_t_to_bytes(tmp.u32_value, bytes);
|
|
}
|
|
|
|
void sensirion_common_copy_bytes(const uint8_t* source, uint8_t* destination,
|
|
uint16_t data_length) {
|
|
uint16_t i;
|
|
for (i = 0; i < data_length; i++) {
|
|
destination[i] = source[i];
|
|
}
|
|
}
|