请问F28335的GPIO64-87可以配置为外部中断吗？

这里要介绍一下，DSP的GPIO口都可以配置为外部中断口，其配置方法如下：  
     GpioCtrlRegs.GPBMUX2.bit.GPIO54 = 0; //选择他们是GPIO口  
     GpioCtrlRegs.GPBMUX2.bit.GPIO55 = 0;  
     GpioCtrlRegs.GPBMUX2.bit.GPIO56 = 0;  
     GpioCtrlRegs.GPBMUX2.bit.GPIO57 = 0;  
     GpioCtrlRegs.GPBDIR.bit.GPIO54 = 0;//选择他们都是输入口  
     GpioCtrlRegs.GPBDIR.bit.GPIO55 = 0;  
     GpioCtrlRegs.GPBDIR.bit.GPIO56 = 0;  
     GpioCtrlRegs.GPBDIR.bit.GPIO57 = 0;  
     GpioCtrlRegs.GPBQSEL2.bit.GPIO54= 0;//GPIO时钟和系统时钟一样且支持GPIO  
     GpioCtrlRegs.GPBQSEL2.bit.GPIO55= 0;  
     GpioCtrlRegs.GPBQSEL2.bit.GPIO56= 0;  
     GpioCtrlRegs.GPBQSEL2.bit.GPIO57= 0;  
     GpioIntRegs.GPIOXINT3SEL.bit.GPIOSEL = 54;//中断3选择GPIO  
     GpioIntRegs.GPIOXINT4SEL.bit.GPIOSEL = 55;  
     GpioIntRegs.GPIOXINT5SEL.bit.GPIOSEL = 56;  
     GpioIntRegs.GPIOXINT6SEL.bit.GPIOSEL = 57;   


var cpro_psid ="u2572954"; var cpro_pswidth =966; var cpro_psheight =120;



     XIntruptRegs.XINT3CR.bit.POLARITY= 0;//触发模式为下降沿触发  
     XIntruptRegs.XINT4CR.bit.POLARITY= 0;  
     XIntruptRegs.XINT5CR.bit.POLARITY= 0;  
     XIntruptRegs.XINT6CR.bit.POLARITY= 0;  
     XIntruptRegs.XINT3CR.bit.ENABLE = 1;//使能中断  
     XIntruptRegs.XINT4CR.bit.ENABLE = 1;  
     XIntruptRegs.XINT5CR.bit.ENABLE = 1;  
     XIntruptRegs.XINT6CR.bit.ENABLE = 1;  
注意一点就是外部中断1和2只能对GPIO0—GPIO31配置；外部中断3和4、5、6、7只对GPIO32—GPIO63配置。

GPIO0-31只能配置成外部中断1和2,   32-63只能配置成外部中断3 4 5 6 7