dsp28_gpio.c

TMS320F2812读写外部RAM的C语言例程

#include "DSP28_Device.h"

void InitGpio(void)
{
// Set GPIO F port pins,bit0 as ouput,bit1 as input,bit2 as output, bit3 as ouput
// Input Qualifier =0, none
     EALLOW;
  	 GpioMuxRegs.GPFMUX.bit.SPISIMOA_GPIOF0 = 0;
  	 GpioMuxRegs.GPFMUX.bit.SPISOMIA_GPIOF1 = 0;
  	 GpioMuxRegs.GPFMUX.bit.SPICLKA_GPIOF2  = 0;
  	 GpioMuxRegs.GPFMUX.bit.SPISTEA_GPIOF3 = 0;
  	 GpioMuxRegs.GPFDIR.bit.GPIOF0 = 1;
  	 GpioMuxRegs.GPFDIR.bit.GPIOF1 = 0;
  	 GpioMuxRegs.GPFDIR.bit.GPIOF2 = 1;
  	 GpioMuxRegs.GPFDIR.bit.GPIOF3 = 1;
     EDIS;
}