SmartMesh QSL for STM32F4 version

Fork of COG-AD4050_QSL by APS Lab

dn_endianness.c

Committer:
APS_Lab
Date:
10 months ago
Revision:
1:b909b8399252
Parent:
0:8ca1e814a851

File content as of revision 1:b909b8399252:

/*
Copyright (c) 2016, Dust Networks. All rights reserved.

Port of the endianness module to the NUCLEO-L053R8.

\license See attached DN_LICENSE.txt.
*/

#include "dn_endianness.h"

//=========================== variables =======================================

//=========================== prototypes ======================================

//=========================== public ==========================================

void dn_write_uint16_t(uint8_t* ptr, uint16_t val){
  // STM32L0 is a little-endian platform
   ptr[0]     = (val>>8)  & 0xff;
   ptr[1]     = (val>>0)  & 0xff;
}

void dn_write_uint32_t(uint8_t* ptr, uint32_t val){ 
  // STM32L0 is a little-endian platform
   ptr[0]     = (val>>24) & 0xff;
   ptr[1]     = (val>>16) & 0xff;
   ptr[2]     = (val>>8)  & 0xff;
   ptr[3]     = (val>>0)  & 0xff;
}

void dn_read_uint16_t(uint16_t* to, uint8_t* from){
   // STM32L0 is a little-endian platform
   *to        = 0;
   *to       |= (from[1]<<0);
   *to       |= (from[0]<<8);
}

void dn_read_uint32_t(uint32_t* to, uint8_t* from){
   // STM32L0 is a little-endian platform
   *to        = 0;
   *to       |= ( ((uint32_t)from[3])<<0 );
   *to       |= ( ((uint32_t)from[2])<<8 );
   *to       |= ( ((uint32_t)from[1])<<16);
   *to       |= ( ((uint32_t)from[0])<<24);
}

//=========================== private =========================================

//=========================== helpers =========================================