mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-27 23:37:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

util: add flip16 and endianess checks

Browse Source
This commit is contained in:
Matthias Ringwald 2017-01-26 21:58:54 +01:00
parent 7cd567c849
commit 5d86890cc5
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/btstack_util.h
View File

@ -128,6 +128,32 @@ uint32_t big_endian_read_32( const uint8_t * buffer, int pos);
void big_endian_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
void big_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
/**
* @brief Swap bytes in 16 bit integer
*/
static inline uint16_t btstack_flip_16(uint16_t value){
return ((value & 0xff) << 8) | (value >> 8);
}
/**
* @brief Check for big endian system
* @returns 1 if on big endian
*/
static inline int btstack_is_big_endian(void){
uint16_t sample = 0x0100;
return *(uint8_t*) &sample;
}
/**
* @brief Check for little endian system
* @returns 1 if on little endian
*/
static inline int btstack_is_little_endian(void){
uint16_t sample = 0x0001;
return *(uint8_t*) &sample;
}
/**
* @brief Copy from source to destination and reverse byte order
* @param src