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MyMessage.cpp
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441 lines (372 loc) · 9.8 KB
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/*
The MySensors library adds a new layer on top of the RF24 library.
It handles radio network routing, relaying and ids.
Created by Henrik Ekblad <henrik.ekblad@gmail.com>
12/10/14 - Ported to Raspberry Pi by OUJABER Mohamed <m.oujaber@gmail.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
*/
#include "MyMessage.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef __Raspberry_Pi
#define min(a,b) (a<b?a:b)
char * itoa(int value, char *result, int base);
char * ltoa(long value, char *result, int base);
char * dtostrf(float f, int width, int decimals, char *result);
char * utoa( unsigned int num, char *str, int radix);
char * ultoa( unsigned long num, char *str, int radix);
#endif
MyMessage::MyMessage() {
destination = 0; // Gateway is default destination
}
MyMessage::MyMessage(uint8_t _sensor, uint8_t _type) {
destination = 0; // Gateway is default destination
sensor = _sensor;
type = _type;
}
bool MyMessage::isAck() const {
return miGetAck();
}
/* Getters for payload converted to desired form */
void* MyMessage::getCustom() const {
return (void *)data;
}
const char* MyMessage::getString() const {
uint8_t payloadType = miGetPayloadType();
if (payloadType == P_STRING) {
return data;
} else {
return NULL;
}
}
// handles single character hex (0 - 15)
char MyMessage::i2h(uint8_t i) const {
uint8_t k = i & 0x0F;
if (k <= 9)
return '0' + k;
else
return 'A' + k - 10;
}
char* MyMessage::getStream(char *buffer) const {
uint8_t cmd = miGetCommand();
if ((cmd == C_STREAM) && (buffer != NULL)) {
for (uint8_t i = 0; i < miGetLength(); i++)
{
buffer[i * 2] = i2h(data[i] >> 4);
buffer[(i * 2) + 1] = i2h(data[i]);
}
buffer[miGetLength() * 2] = '\0';
return buffer;
} else {
return NULL;
}
}
char* MyMessage::getString(char *buffer) const {
uint8_t payloadType = miGetPayloadType();
if (payloadType == P_STRING) {
strncpy(buffer, data, miGetLength());
buffer[miGetLength()] = 0;
return buffer;
} else if (buffer != NULL) {
if (payloadType == P_BYTE) {
itoa(bValue, buffer, 10);
} else if (payloadType == P_INT16) {
itoa(iValue, buffer, 10);
} else if (payloadType == P_UINT16) {
utoa(uiValue, buffer, 10);
} else if (payloadType == P_LONG32) {
ltoa(lValue, buffer, 10);
} else if (payloadType == P_ULONG32) {
ultoa(ulValue, buffer, 10);
} else if (payloadType == P_FLOAT32) {
dtostrf(fValue,2,fPrecision,buffer);
} else if (payloadType == P_CUSTOM) {
return getStream(buffer);
}
return buffer;
} else {
return NULL;
}
}
uint8_t MyMessage::getByte() const {
if (miGetPayloadType() == P_BYTE) {
return data[0];
} else if (miGetPayloadType() == P_STRING) {
return atoi(data);
} else {
return 0;
}
}
bool MyMessage::getBool() const {
return getInt();
}
float MyMessage::getFloat() const {
if (miGetPayloadType() == P_FLOAT32) {
return fValue;
} else if (miGetPayloadType() == P_STRING) {
return atof(data);
} else {
return 0;
}
}
long MyMessage::getLong() const {
if (miGetPayloadType() == P_LONG32) {
return lValue;
} else if (miGetPayloadType() == P_STRING) {
return atol(data);
} else {
return 0;
}
}
unsigned long MyMessage::getULong() const {
if (miGetPayloadType() == P_ULONG32) {
return ulValue;
} else if (miGetPayloadType() == P_STRING) {
return atol(data);
} else {
return 0;
}
}
int MyMessage::getInt() const {
if (miGetPayloadType() == P_INT16) {
return iValue;
} else if (miGetPayloadType() == P_STRING) {
return atoi(data);
} else {
return 0;
}
}
unsigned int MyMessage::getUInt() const {
if (miGetPayloadType() == P_UINT16) {
return uiValue;
} else if (miGetPayloadType() == P_STRING) {
return atoi(data);
} else {
return 0;
}
}
MyMessage& MyMessage::setType(uint8_t _type) {
type = _type;
return *this;
}
MyMessage& MyMessage::setSensor(uint8_t _sensor) {
sensor = _sensor;
return *this;
}
MyMessage& MyMessage::setDestination(uint8_t _destination) {
destination = _destination;
return *this;
}
// Set payload
MyMessage& MyMessage::set(void* value, uint8_t length) {
miSetPayloadType(P_CUSTOM);
miSetLength(length);
memcpy(data, value, min(length, MAX_PAYLOAD));
return *this;
}
MyMessage& MyMessage::set(const char* value) {
uint8_t length = strlen(value);
miSetLength(length);
miSetPayloadType(P_STRING);
strncpy(data, value, min(length, MAX_PAYLOAD));
return *this;
}
MyMessage& MyMessage::set(uint8_t value) {
miSetLength(1);
miSetPayloadType(P_BYTE);
data[0] = value;
return *this;
}
MyMessage& MyMessage::set(float value, uint8_t decimals) {
miSetLength(5); // 32 bit float + persi
miSetPayloadType(P_FLOAT32);
fValue=value;
fPrecision = decimals;
return *this;
}
MyMessage& MyMessage::set(unsigned long value) {
miSetPayloadType(P_ULONG32);
miSetLength(4);
ulValue = value;
return *this;
}
MyMessage& MyMessage::set(long value) {
miSetPayloadType(P_LONG32);
miSetLength(4);
lValue = value;
return *this;
}
MyMessage& MyMessage::set(unsigned int value) {
miSetPayloadType(P_UINT16);
miSetLength(2);
uiValue = value;
return *this;
}
MyMessage& MyMessage::set(int value) {
miSetPayloadType(P_INT16);
miSetLength(2);
iValue = value;
return *this;
}
#ifdef __Raspberry_Pi
/**
* C++ version 0.4 char* style "itoa":
* Written by Lukás Chmela
* Released under GPLv3.
*/
char *itoa(int value, char* result, int base) {
// check that the base if valid
if (base < 2 || base > 36) { *result = '\0'; return result; }
char* ptr = result, *ptr1 = result, tmp_char;
int tmp_value;
do {
tmp_value = value;
value /= base;
*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz" [35 + (tmp_value - value * base)];
} while ( value );
// Apply negative sign
// Apply negative sign
if (tmp_value < 0) *ptr++ = '-';
*ptr-- = '\0';
while(ptr1 < ptr) {
tmp_char = *ptr;
*ptr--= *ptr1;
*ptr1++ = tmp_char;
}
return result;
}
/**
* C++ version 0.4 char* style "itoa":
* Written by Lukás Chmela
* Released under GPLv3.
*/
char *ltoa(long value, char* result, int base) {
// check that the base if valid
if (base < 2 || base > 36) { *result = '\0'; return result; }
char* ptr = result, *ptr1 = result, tmp_char;
long tmp_value;
do {
tmp_value = value;
value /= base;
*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz" [35 + (tmp_value - value * base)];
} while ( value );
// Apply negative sign
if (tmp_value < 0) *ptr++ = '-';
*ptr-- = '\0';
while(ptr1 < ptr) {
tmp_char = *ptr;
*ptr--= *ptr1;
*ptr1++ = tmp_char;
}
return result;
}
char *dtostrf(float f, int width, int decimals, char *result)
{
char widths[3];
char decimalss[3];
char format[100];
itoa(width,widths,10);
itoa(decimals,decimalss,10);
strcpy(format,"%");
strcat(format,widths);
strcat(format,".");
strcat(format,decimalss);
strcat(format,"f");
sprintf(result,format,f);
return result;
}
/* Copyright (c) 2012, Peter A. Bigot <bigotp@acm.org>
*
* 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 the software 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.
*/
char *utoa(unsigned int num, char *str, int radix)
{
unsigned int value;
char *sp = str;
char *sp2;
value = num;
/* Store sign at start of buffer for negative base-10 values */
if (10 == radix && 0 > num) {
*sp++ = '-';
value = -num;
}
sp2 = sp;
do {
char rem = value % radix;
value /= radix;
if (10 > rem) {
*sp++ = '0' + rem;
} else {
*sp++ = 'A' + rem - 10;
}
} while (0 < value);
/* Mark end of string */
*sp-- = 0;
/* Reverse string contents (excluding sign) in place */
while (sp2 < sp) {
char tmp = *sp2;
*sp2++ = *sp;
*sp-- = tmp;
}
return str;
}
char *ultoa(unsigned long num, char *str, int radix)
{
unsigned long value;
char *sp = str;
char *sp2;
value = num;
/* Store sign at start of buffer for negative base-10 values */
if (10 == radix && 0 > num) {
*sp++ = '-';
value = -num;
}
sp2 = sp;
do {
char rem = value % radix;
value /= radix;
if (10 > rem) {
*sp++ = '0' + rem;
} else {
*sp++ = 'A' + rem - 10;
}
} while (0 < value);
/* Mark end of string */
*sp-- = 0;
/* Reverse string contents (excluding sign) in place */
while (sp2 < sp) {
char tmp = *sp2;
*sp2++ = *sp;
*sp-- = tmp;
}
return str;
}
#endif