/*
?GSM.cpp?-?library?for?the?GSM?Playground?-?GSM?Shield?for?Arduino
?Released?under?the?Creative?Commons?Attribution-Share?Alike?3.0?License
?http://www.creativecommons.org/licenses/by-sa/3.0/
?www.hwkitchen.com
*/??
#include?“WProgram.h“
#include?“NewSoftSerial.h“
#include?“GSM_Shield.h“

extern?“C“?{
??#include?
}


NewSoftSerial?mySerial（4?5）;??//rx?tx



#ifdef?DEBUG_LED_ENABLED
??int?DEBUG_LED?=?25;????????????????//?LED?connected?to?digital?pin?25

void??GSM::blinkDebugLED?（byte?num_of_blink）
??{
????byte?i;

????pinMode（DEBUG_LED?OUTPUT）;??????//?sets?the?digital?pin?as?output
????for?（i?=?0;?i?ink;?i++）?{
??????digitalWrite（DEBUG_LED?HIGH）;???//?sets?the?LED?on
??????delay（50）;
??????digitalWrite（DEBUG_LED?LOW）;???//?sets?the?LED?off
??????delay（500）;
????}
??}
#endif

#ifdef?DEBUG_PRINT
/**********************************************************
Two?methods?print?out?debug?information?to?the?standard?output
-?it?means?to?the?serial?line.
First?method?prints?string.
Second?method?prints?integer?numbers.

Note:
=====
The?serial?line?is?connected?to?the?GSM?module?and?is?
used?for?sending?AT?commands.?There?is?used?“trick“?that?GSM
module?accepts?not?valid?AT?command?strings?because?it?doesn‘t
understand?them?and?still?waits?for?some?valid?AT?command.
So?after?all?debug?strings?are?sent?we?send?just?AT?as
a?valid?AT?command?and?GSM?module?responds?by?OK.?So?previous?
debug?strings?are?overwritten?and?GSM?module?is?not?influenced
by?these?debug?texts?


string_to_print:??pointer?to?the?string?to?be?print?out
last_debug_print:?0?-?this?is?not?last?debug?info?we?will
??????????????????????continue?with?sending...?so?don‘t?send
??????????????????????AT（see?explanation?above）
??????????????????1?-?we?are?finished?with?sending?debug?info?
??????????????????????for?this?time?and?finished?AT?
??????????????????????will?be?sent（see?explanation?above）

**********************************************************/
void?GSM::DebugPrint（const?char?*string_to_print?byte?last_debug_print）
{
??if?（last_debug_print）?{
????Serial.println（string_to_print）;
????SendATCmdWaitResp（“AT“?500?50?“OK“?1）;
??}
??else?Serial.print（string_to_print）;
}

void?GSM::DebugPrint（int?number_to_print?byte?last_debug_print）
{
??Serial.println（number_to_print）;
??if?（last_debug_print）?{
????SendATCmdWaitResp（“AT“?500?50?“OK“?1）;
??}
}
#endif

/**********************************************************
Method?returns?GSM?library?version

return?val:?100?means?library?version?1.00
????????????101?means?library?version?1.01
**********************************************************/
int?GSM::LibVer（void）
{
??return?（GSM_LIB_VERSION）;
}

/**********************************************************
??Constructor?definition
***********************************************************/

GSM::GSM（void）
{
??//?set?some?GSM?pins?as?inputs?some?