//###########################################################################
//
// FILE:	DSP2833x_Gpio.c
//
// TITLE:	DSP2833x General Purpose I/O Initialization & Support Functions.
//
//###########################################################################
// $TI Release: F2833x/F2823x Header Files and Peripheral Examples V142 $
// $Release Date: November  1, 2016 $
// $Copyright: Copyright (C) 2007-2016 Texas Instruments Incorporated -
//             http://www.ti.com/ ALL RIGHTS RESERVED $
//###########################################################################

//
// Included Files
//
#include "DSP2833x_Device.h"     // DSP2833x Headerfile Include File
#include "DSP2833x_Examples.h"   // DSP2833x 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-GPIO39
    GpioCtrlRegs.GPBMUX2.all = 0x0000;     // GPIO functionality GPIO48-GPIO63
    GpioCtrlRegs.GPCMUX1.all = 0x0000;     // GPIO functionality GPIO64-GPIO79
    GpioCtrlRegs.GPCMUX2.all = 0x0000;     // GPIO functionality GPIO80-GPIO95

    GpioCtrlRegs.GPADIR.all = 0x0000;      // GPIO0-GPIO31 are inputs
    GpioCtrlRegs.GPBDIR.all = 0x0000;      // GPIO32-GPIO63 are inputs   
    GpioCtrlRegs.GPCDIR.all = 0x0000;      // GPI064-GPIO95 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-GPIO39 Synch to SYSCLKOUT 
    GpioCtrlRegs.GPBQSEL2.all = 0x0000;    // GPIO48-GPIO63 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-GPIO63
    GpioCtrlRegs.GPCPUD.all = 0x0000;      // Pullup's enabled GPIO64-GPIO79
    //GpioCtrlRegs.GPAPUD.all = 0xFFFF;    // Pullup's disabled GPIO0-GPIO31
    //GpioCtrlRegs.GPBPUD.all = 0xFFFF;    // Pullup's disabled GPIO32-GPIO34
    //GpioCtrlRegs.GPCPUD.all = 0xFFFF;    // Pullup's disabled GPIO64-GPIO79

    EDIS;
}	
	
//
// End of file
//