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//*****************************************************************************
//
// stats.c - Implements structures and functions for cloud-connected statistics
//
// Copyright (c) 2013-2014 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 2.1.0.12573 of the EK-TM4C1294XL Firmware Package.
//
//*****************************************************************************
#include <stdint.h>
#include <stdbool.h>
#include "driverlib/rom.h"
#include "utils/ustdlib.h"
#include "stats.h"
//*****************************************************************************
//
// Sets the value of a tStat structure based on a formatted string input.
//
//*****************************************************************************
void
StatSetVal(tStat *psStat, char *pcInputValue)
{
if((psStat->eValueType) == STRING)
{
ustrncpy(StatStringVal(*psStat), pcInputValue, MAX_STAT_STRING);
}
else if((psStat->eValueType == INT) ||
(psStat->eValueType == HEX))
{
StatIntVal(*psStat) = ustrtoul(pcInputValue, NULL, 0);
}
}
//*****************************************************************************
//
// Given a destination buffer and a tStat pointer, this function will produce a
// formatted "request string" that can be used in the Exosite_Write function.
//
//*****************************************************************************
void
StatRequestFormat(tStat *psStat, char *pcRequestBuffer)
{
if((psStat->eValueType) == STRING)
{
//
// Disable interrupts to avoid changes to the string during the copy
// operation.
//
ROM_IntMasterDisable();
usprintf(pcRequestBuffer, "%s=%s",
psStat->pcCloudAlias,
StatStringVal(*psStat));
ROM_IntMasterEnable();
}
else if((psStat->eValueType) == INT)
{
usprintf(pcRequestBuffer, "%s=%d",
psStat->pcCloudAlias,
StatIntVal(*psStat));
}
else if((psStat->eValueType) == HEX)
{
usprintf(pcRequestBuffer, "%s=0x%x",
psStat->pcCloudAlias,
StatIntVal(*psStat));
}
}
//*****************************************************************************
//
// Given a pointer to a tStat and a destination string, this function will
// print the value of the tStat to the string.
//
//*****************************************************************************
void
StatPrintValue(tStat *psStat, char *pcValueString)
{
char *pcSourceString;
char pcPercentString[3];
uint32_t ui32CharValue;
uint8_t ui8Index;
//
// Check the type of data that is stored in this psStat variable.
//
if((psStat->eValueType) == STRING)
{
//
// If this is a string, perform a little processing to remove
// percent-encoded characters. First, copy the original string pointer
// for ease of use.
//
pcSourceString = StatStringVal(*psStat);
//
// Loop through the characters in the string one by one.
//
ui8Index = 0;
while(*pcSourceString != 0)
{
//
// If the character is a percent sign, calculate the correct
// percent-encoding substitution.
//
if(*pcSourceString == '%')
{
//
// The next two characters should be a hexadecimal
// representation of the actual character that should be
// printed. Convert them to an integer here.
//
ustrncpy(pcPercentString, (pcSourceString + 1), 2);
pcPercentString[2] = 0;
ui32CharValue = ustrtoul((pcPercentString), NULL, 16);
//
// Increment the source pointer past the escaped characters.
//
pcSourceString = pcSourceString + 3;
//
// Copy the converted value into the destination string.
//
pcValueString[ui8Index] = ui32CharValue;
}
else
{
//
// If the character was not a percent sign, it can be copied
// directly.
//
pcValueString[ui8Index] = *pcSourceString;
pcSourceString++;
}
//
// Increment the index.
//
ui8Index++;
}
pcValueString[ui8Index] = 0;
}
else if((psStat->eValueType) == INT)
{
//
// If this is an integer value, just print the value as text into the
// destination string.
//
usprintf(pcValueString, "%d", StatIntVal(*psStat));
}
}
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