dsp28_gpio.c

DSP2812的直流斩波调速程序

#include "DSP28_Device.h"

//
void InitGpio(void)
{


     EALLOW;
     GpioMuxRegs.GPAMUX.all=0x00ff;     
     GpioMuxRegs.GPADIR.all=0xFF00;    	// upper byte as output/low byte as input
     GpioMuxRegs.GPAQUAL.all=0x0000;	// Input qualifier disabled

     GpioMuxRegs.GPBMUX.all=0x00FF;   
     GpioMuxRegs.GPBDIR.all=0xFF00;
     GpioMuxRegs.GPBQUAL.all=0x0000;	// Input disabled输入采样时间的限制
     GpioMuxRegs.GPEMUX.bit.XNMI_XINT13_GPIOE2=0;//GPIOE2的功能位定义
     GpioMuxRegs.GPEDIR.bit.GPIOE2=1;//方向定义
     GpioMuxRegs.GPFMUX.bit.MDRA_GPIOF13=0;//GPIOF13功能定义
     GpioMuxRegs.GPFDIR.bit.GPIOF13=0;//
     
     EDIS;
     GpioDataRegs.GPBDAT.all=0xFFFF;
     
}