dsp280x_gpio.c

2808单相全桥spwm逆变工程.rar

// 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 V1.10 $
// $Release Date: April 18, 2005 $
//###########################################################################

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

//---------------------------------------------------------------------------
// InitGpio: 
//---------------------------------------------------------------------------
// This function initializes the Gpio to a known (default) state.
//
// For more details on configuring GPIO's as peripheral functions,
// refer to the individual peripheral examples and/or GPIO setup example. 
void InitGpio(void)
{
   EALLOW;
   
   // Each GPIO pin can be: 
   // a) a GPIO input/output
   // b) peripheral function 1
   // c) peripheral function 2
   // d) peripheral function 3
   // By default, all are GPIO Inputs 
   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;      // GPIO0-GPIO31 are GP inputs
   GpioCtrlRegs.GPBDIR.all = 0x0000;      // GPIO32-GPIO34 are inputs   
   
   // Each input can have different qualification
   // a) input synchronized to SYSCLKOUT
   // b) input qualified by a sampling window
   // c) input sent asynchronously (valid for peripheral inputs only)
   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 = 0x00000fff;      // Pullup's enabled GPIO0-GPIO31 除gpio0-11 epwm外
   GpioCtrlRegs.GPBPUD.all = 0x0000;      // Pullup's enabled GPIO32-GPIO34
   //GpioCtrlRegs.GPAPUD.all = 0xFFFF;    // Pullup's disabled GPIO0-GPIO31
   //GpioCtrlRegs.GPBPUD.all = 0xFFFF;    // Pullup's disabled GPIO32-GPIO34
   EDIS;

}	


void InitLogicIO(void)
{

	int16 i;

	EALLOW;

//输出: 1初始状态
	GpioDataRegs.GPASET.bit.GPIO17=1;   //run relay   //上电上拉到高，不闭合
	GpioDataRegs.GPASET.bit.GPIO14=1;  // dsp p      //初始化不保护          
	GpioDataRegs.GPASET.bit.GPIO12=1;  // le dc  //上电即上拉到高，关闭pwm
	GpioDataRegs.GPASET.bit.GPIO13=1; //le ac
	GpioDataRegs.GPASET.bit.GPIO16=1;  //fan   off

	GpioDataRegs.GPACLEAR.bit.GPIO26=1; //run led off
	
	GpioDataRegs.GPASET.bit.GPIO25=1; //4094 clk  //high
	GpioDataRegs.GPASET.bit.GPIO19=1; //4094 data //1
	GpioDataRegs.GPACLEAR.bit.GPIO30=1; //4094 str  //low disable

	GpioDataRegs.GPBSET.bit.GPIO32=1;  //24c16 data //1
	GpioDataRegs.GPBSET.bit.GPIO33=1; // 24c16 clk  //1

	GpioCtrlRegs.GPADIR.all=0x420b7000;
	GpioCtrlRegs.GPBDIR.all=0x3;  


//输入
	GpioCtrlRegs.GPADIR.bit.GPIO20=0;   //F2
	GpioCtrlRegs.GPADIR.bit.GPIO21=0;   //F1
	GpioCtrlRegs.GPADIR.bit.GPIO22=0;   //F0
	GpioCtrlRegs.GPADIR.bit.GPIO23=0;   //Fault
	
	GpioCtrlRegs.GPADIR.bit.GPIO24=0; //开关机信号switch

	GpioCtrlRegs.GPAPUD.bit.GPIO31=1;  //disable pullup	
	GpioCtrlRegs.GPADIR.bit.GPIO31=0;   //BTN  //key
	
	//输入鉴定:忽略100ns*6以内的干扰
	GpioCtrlRegs.GPACTRL.bit.QUALPRD2=0x5;    //鉴定周期:10ns*10
	GpioCtrlRegs.GPAQSEL2.bit.GPIO20=2;         //使能6周期鉴定
	GpioCtrlRegs.GPAQSEL2.bit.GPIO21=2;
	GpioCtrlRegs.GPAQSEL2.bit.GPIO22=2;
	GpioCtrlRegs.GPAQSEL2.bit.GPIO23=2;
	GpioCtrlRegs.GPAQSEL2.bit.GPIO24=2;
	GpioCtrlRegs.GPAQSEL2.bit.GPIO31=2;  //BTN  key 
	



//EI延时后的初始化,0为保护功能有效，其是否封锁epwm需根据输入状态决定。1为硬件上电初始化，封锁epwm
	for(i=0;i<30000;i++)
		{
		asm("nop");
		}

	GpioDataRegs.GPACLEAR.bit.GPIO15=1;  //EI
	GpioCtrlRegs.GPADIR.bit.GPIO15=1;

	EDIS;
}
//===========================================================================
// End of file.
//===========================================================================