P1.14

[christophe239955]

Posted on May 31, 2006 at 05:13

P1.14

[christophe239955]

Posted on May 17, 2006 at 12:38

Hello,

I want to use the P1.13 P1.14 P1.15 like port and not for the HDLC : an equipment is connected to the str through this pins.

on P1.13 I have a clock (GPIO_IN_TRI_TLL + interrupt)

on P1.14 receive data (GPIO_IN_TRI_TLL)

on P1.15 sending data (GPIO_OUT_PP)

if I'm using P0.11 instead of P1.14 everything is working

If I'm using P1.14 it's not working

I'm wondering if there is no specific initialization for P1.14 because it is connected to a PLL?(HRXD to DPLL for HDLC)

Thanks

[christophe239955]

Posted on May 31, 2006 at 05:13

here is the software for the case it works :

GPIO_Config(GPIO0,0x0800,GPIO_IN_TRI_TTL);//P0.11 data RX on this pin

GPIO_Config(GPIO1,0x8000,GPIO_OUT_PP);//P1.15 data TX

GPIO_Config(GPIO1,0x2000,GPIO_IN_TRI_TTL);//P1.13 clock + interrupt

XTI_LineModeConfig(XTI_Line7,XTI_FallingEdge);

XTI_LineConfig(XTI_Line7,ENABLE);

XTI_ModeConfig(XTI_Interrupt,ENABLE);

EIC_IRQCOnfig(ENABLE);

it :

XTI_IRQHandler(void)

{

_interrupt_line=XTI_InterruptLineValue();

switch(_interrupt_line)

{

case XTI_Line7 :

_data[i++]=GPIO_BitRead(GPIO0,11);

break;

...

}

}

In this case I'm receiving 256 bits from the equipment.

Now with the pin P1.14 :

instead of GPIO_Config(GPIO0,0x0800,GPIO_IN_TRI_TTL);//P0.11 data RX

there is GPIO_Config(GPIO1,0x4000,GPIO_IN_TRI_TTL);//P114data RX

and instead of this _data[i++]=GPIO_BitRead(GPIO0,11);

there is _data[i++]=GPIO_BitRead(GPIO1,14);

And in this case I'm only receiving 192 bits from the equipment, like the P1.14 is interferring on the clock P1.13 and the 192 bits are completely not good.

Is P1.14 is modifying P1.13?

Is P1.14 is not good defined?