example_280x_lcd.c

来自「DSP2808例程。TMS320F2808DSP的各个模块的应用例程」· C语言 代码 · 共 202 行

// TI File $Revision: /main/4 $
// Checkin $Date: September 7, 2005   17:52:52 $
//###########################################################################
//
// FILE:    Example_280xGpioSetup.c
//
// TITLE:   DSP280x Device GPIO Setup 
//
// ASSUMPTIONS:
//
//    This program requires the DSP280x header files.  
//
//    Two different examples are included. Select the example 
//    to execute before compiling using the #define statements
//    found at the top of the code.   
//
//    As supplied, this project is configured for "boot to SARAM" 
//    operation.  The 280x Boot Mode table is shown below.  
//    For information on configuring the boot mode of an eZdsp, 
//    please refer to the documentation included with the eZdsp,  
//
//       Boot      GPIO18     GPIO29    GPIO34
//       Mode      SPICLKA    SCITXDA
//                  SCITXB
//       -------------------------------------
//       Flash       1          1        1
//       SCI-A       1          1        0
//       SPI-A       1          0        1
//       I2C-A       1          0        0
//       ECAN-A      0          1        1        
//       SARAM       0          1        0  <- "boot to SARAM"
//       OTP         0          0        1
//       I/0         0          0        0 
//
//
// DESCRIPTION:
//
//
//    Configures the 280x GPIO into two different configurations
//    This code is verbose to illustrate how the GPIO could be setup.
//    In a real application, lines of code can be combined for improved
//    code size and efficency. 
//
//    This example only sets-up the GPIO.. nothing is actually done with
//    the pins after setup. 
//
//    In general: 
//
//       All pullup resistors are enabled.  For ePWMs this may not be desired. 
//       Input qual for communication ports (eCAN, SPI, SCI, I2C) is asynchronous
//       Input qual for Trip pins (TZ) is asynchronous
//       Input qual for eCAP and eQEP signals is synch to SYSCLKOUT
//       Input qual for some I/O's and interrupts may have a sampling window
// 
//
//###########################################################################
// $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

const unsigned char strReadPara[] = {" www.51usb.com  "};

// Select the example to compile in.  Only one example should be set as 1
// the rest should be set as 0.

// Prototype statements for functions found within this file.
void InitGpio(void);

void main(void)
{

// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP280x_SysCtrl.c file.
   InitSysCtrl();
   
// Step 2. Initalize GPIO: 
// This example function is found in the DSP280x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
   // InitGpio(); Skipped for this example  
 
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts 
   DINT;

// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.  
// This function is found in the DSP280x_PieCtrl.c file.
   InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
   IER = 0x0000;
   IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt 
// Service Routines (ISR).  
// This will populate the entire table, even if the interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in DSP280x_DefaultIsr.c.
// This function is found in DSP280x_PieVect.c.
   InitPieVectTable();

	
// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP280x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
	
// Step 5. User specific code:
    InitGpio();
	LCDInit();
	LCDClear();
	DispOneByte(0, 0, 0x9);
	DispString(0, 0, strReadPara);
	for(;;)
	{
		
		DispString(0, 0, strReadPara);
		DispString(1, 0, strReadPara);
	}
} 	

void InitGpio(void)
{

   EALLOW;
   // 使能上拉或关闭上拉. 
   GpioCtrlRegs.GPAPUD.all = 0x0000;      // 使能上拉 GPIO0-GPIO31
   GpioCtrlRegs.GPBPUD.all = 0x0000;      // 使能上拉 enabled GPIO32-GPIO34
   //GpioCtrlRegs.GPAPUD.all = 0xFFFF;    // Pullup's disabled GPIO0-GPIO31
   //GpioCtrlRegs.GPBPUD.all = 0xFFFF;    // Pullup's disabled GPIO32-GPIO34
   GpioCtrlRegs.GPBPUD.bit.GPIO34 = 0;  // Enable pullup on GPIO34
   
   //初始化GPIO00-GPIO11为输出，输出高电平
   //GpioDataRegs.GPASET.all = 0x0FFF;
   ///*
   GpioDataRegs.GPASET.bit.GPIO0  = 1;
   GpioDataRegs.GPASET.bit.GPIO1  = 1;
   GpioDataRegs.GPASET.bit.GPIO2  = 1;
   GpioDataRegs.GPASET.bit.GPIO3  = 1;
   GpioDataRegs.GPASET.bit.GPIO4  = 1;
   GpioDataRegs.GPASET.bit.GPIO5  = 1;
   GpioDataRegs.GPASET.bit.GPIO6  = 1;
   GpioDataRegs.GPASET.bit.GPIO7  = 1;
   GpioDataRegs.GPASET.bit.GPIO8  = 1;
   GpioDataRegs.GPASET.bit.GPIO9  = 1;
   GpioDataRegs.GPASET.bit.GPIO10 = 1;
   GpioDataRegs.GPASET.bit.GPIO11 = 1; 
   GpioDataRegs.GPASET.bit.GPIO12 = 1;
   GpioDataRegs.GPASET.bit.GPIO13 = 1;  
   GpioDataRegs.GPBSET.bit.GPIO34 = 1;  
   //*/
   //GpioCtrlRegs.GPAMUX1.all = 0xF000;
   ///*
   GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 0;
   GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 0;  // GPIO1 = GPIO1
   GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 0;  // GPIO2 = GPIO2
   GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 0;  // GPIO3 = GPIO3
   GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 0;  // GPIO4 = GPIO4
   GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 0;  // GPIO5 = GPIO5
   GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 0;  // GPIO6 = GPIO6
   GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 0;  // GPIO7 = GPIO7
   GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 0;  // GPIO8 = GPIO8
   GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 0;  // GPIO9 = GPIO9
   GpioCtrlRegs.GPAMUX1.bit.GPIO10= 0;  // GPIO10 = GPIO10
   GpioCtrlRegs.GPAMUX1.bit.GPIO11= 0;  // GPIO11 = GPIO11
   GpioCtrlRegs.GPAMUX1.bit.GPIO12= 0;
   GpioCtrlRegs.GPAMUX1.bit.GPIO13= 0;
   GpioCtrlRegs.GPBMUX1.bit.GPIO34= 0;
   //*/
   //GpioCtrlRegs.GPADIR.all = 0x0FFF;
   ///* 
   GpioCtrlRegs.GPADIR.bit.GPIO0 = 1;	// GPIO0 = output
   GpioCtrlRegs.GPADIR.bit.GPIO1 = 1;	// GPIO1 = output
   GpioCtrlRegs.GPADIR.bit.GPIO2 = 1;	// GPIO2 = output
   GpioCtrlRegs.GPADIR.bit.GPIO3 = 1;	// GPIO3 = output
   GpioCtrlRegs.GPADIR.bit.GPIO4 = 1;	// GPIO4 = output
   GpioCtrlRegs.GPADIR.bit.GPIO5 = 1;	// GPIO5 = output
   GpioCtrlRegs.GPADIR.bit.GPIO6 = 1;	// GPIO6 = output
   GpioCtrlRegs.GPADIR.bit.GPIO7 = 1;	// GPIO7 = output
   GpioCtrlRegs.GPADIR.bit.GPIO8 = 1;	// GPIO8 = output
   GpioCtrlRegs.GPADIR.bit.GPIO9 = 1;	// GPIO9 = output
   GpioCtrlRegs.GPADIR.bit.GPIO10= 1;	// GPIO10= output
   GpioCtrlRegs.GPADIR.bit.GPIO11= 1;	// GPIO11= output
   GpioCtrlRegs.GPADIR.bit.GPIO12= 1;
   GpioCtrlRegs.GPADIR.bit.GPIO13= 1;
   GpioCtrlRegs.GPBDIR.bit.GPIO34= 1;
   //*/
   EDIS;

}



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