dsp280x_gpio.c

来自「TMS320F2808 DSP芯片的接口控制源码」· C语言 代码 · 共 55 行

// TI File $Revision: /main/2 $
// Checkin $Date: December 2, 2004   11:50:58 $
//###########################################################################
//
// FILE:	DSP280x_Gpio.c
//
// TITLE:	DSP280x General Purpose I/O Initialization & Support Functions.
//
//###########################################################################
// $TI Release: DSP280x V1.30 $
// $Release Date: February 10, 2006 $
//###########################################################################

#include "DSP280x_Device.h"     // DSP280x Headerfile Include File
#include "DSP280x_Examples.h"   // DSP280x Examples Include File

void InitGpio(void)
{
   EALLOW;
   GpioCtrlRegs.GPAMUX1.all = 0x0000;     // GPIO functionality GPIO0-GPIO15
   GpioCtrlRegs.GPAMUX2.all = 0x0000;     // GPIO functionality GPIO16-GPIO31
   
   GpioCtrlRegs.GPBMUX1.all = 0x0000;     // GPIO functionality GPIO32-GPIO34

   GpioCtrlRegs.GPADIR.all = 0x0000;      
   
   GpioCtrlRegs.GPADIR.bit.GPIO0 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO1 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO2 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO11 = 1;
   
   GpioCtrlRegs.GPADIR.bit.GPIO17 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO19 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO20 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO22 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO24 = 1;
   GpioCtrlRegs.GPADIR.bit.GPIO26 = 1;
   
   GpioCtrlRegs.GPBDIR.all = 0x0000;      // GPIO32-GPIO34 are inputs   
   
   GpioCtrlRegs.GPAQSEL1.all = 0x0000;    // GPIO0-GPIO15 Synch to SYSCLKOUT 
   GpioCtrlRegs.GPAQSEL2.all = 0x0000;    // GPIO16-GPIO31 Synch to SYSCLKOUT
   GpioCtrlRegs.GPBQSEL1.all = 0x0000;    // GPIO32-GPIO34 Synch to SYSCLKOUT 

   // Pull-ups can be enabled or disabled. 
   GpioCtrlRegs.GPAPUD.all = 0x0000;      // Pullup's enabled GPIO0-GPIO31
   GpioCtrlRegs.GPBPUD.all = 0x0000;      // Pullup's enabled GPIO32-GPIO34
   EDIS;

}	
	
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