void cellular_init()
{
//configure pins
DDRB = DDRB | (1 << PORTB1);//make Cell phone ON/OFF output
DDRB = DDRB & (0 << PORTB2); //set pin 3 "poweron MON" to be input
_delay_ms(500); //wait for these pins to be stable
if(cellular_isOn())
{
ToggleCellModule(); //turn it off then!
while(cellular_isOn()) //wait for it to turn off
{
//maybe add an escape condition
}
}
if(!cellular_isOn()) //it's off i guess
{
ToggleCellModule();
while(!cellular_isOn()) //wait for it to turn on
{
//maybe?
}
}
ATsend_no("AT\r"); //get the modules attention.
_delay_ms(7000);
ATsend_no("AT\r"); //no really we want your attention.
_delay_ms(5000); //we need these delays, because some time during
//the init process the module will send a MWI
//and the next command we send will likely fail
//if it is an AT then everything is fine.
//however this can only increase our odds...
//without real parsing we have to do this.
}
int cellular_ON()
{
if(cellular_isOn())
{
//cellular_OFF();
//cellular_modem_reset();
//lcd_puts("found to be on\n");
_delay_ms(2000);
ATsend_no("AT\r"); //get the modules attention.
_delay_ms(1000);
ATsend_no("AT\r");
_delay_ms(1000);
ATsend_no("AT#NITZ=1,1\r");
_delay_ms(1000);
ATsend_no("AT+CTZU=1,1\r");
return 0;
}
else //if(!cellular_isOn()) //it's off i guess
{
//lcd_puts("turn on");
//ToggleCellModule();
PORTB = PORTB | (1<<PORTB1);
_delay_ms(5000);
PORTB = PORTB & ~(1<<PORTB1);
_delay_ms(500);
int count = 0;
while(!cellular_isOn()&&count<10) //two second time out to turn on to modem rest
{
lcd_putc('T');
_delay_ms(200);
count++;
}
if(count >= 10)
{
// lcd_puts("timeout. reset\n");
cellular_modem_reset();
return -1;
}
else
{
//lcd_puts("found to be on2\n");
_delay_ms(2000);
ATsend_no("AT\r"); //get the modules attention.
_delay_ms(1000);
ATsend_no("AT\r");
_delay_ms(1000);
//we need these delays, because some time during
ATsend_no("AT#NITZ=1,1\r");
_delay_ms(1000);
ATsend_no("AT+CTZU=1,1\r");
return 0;
}
} //the init process the module will send a MWI
//and the next command we send will likely fail
//if it is an AT then everything is fine.
//however this can only increase our odds...
//without real parsing we have to do this.
}
int cellular_OFF()
{
/*if(!cellular_isOn())
{
cellular_ON();
//return -2;
}*/
ATsend_no("AT#SHDN\r");
_delay_ms(5000);
//else
if(cellular_isOn())
{
//ToggleCellModule();
PORTB = PORTB | (1<<PORTB1);
_delay_ms(5000);
PORTB = PORTB & ~(1<<PORTB1);
int count = 0;
while(cellular_isOn() && count < 40)//15 second time out to modem reset
{
_delay_ms(375);
count++;
}
if(count >= 40)
{
//cellular_modem_reset();
PORTC = PORTC & (0 << PORTC7); //kill myself
return -1;//silly...
}
else
{
_delay_ms(1500);
//cellular_ON();
return 0;
}
}
else
{
PORTC = PORTC & (0 << PORTC7); //kill myself
}
}
int cellular_modem_reset()
{
PORTB = PORTB | (1<<PORTB3);
_delay_ms(5000);
PORTB = PORTB & ~(1<<PORTB3);
if(cellular_isOn())
{
_delay_ms(2000);
ATsend_no("AT\r");
return 0;
}
else
{
_delay_ms(2000);
return cellular_ON();
}
}
