CCS5.4+Proteus8的F28027实践课六、实验板焊接调试（12864部分） / 四六文摘

下班早早回家就是为了把昨天没做完的事情搞完，但等我把12864调完之后，好想找块豆腐撞死算了，RS引脚跳线不知道什么时候被我弄断了，我竟然一直没有检查板子，只顾着对着时序图和寄存器检查程序，哎，直接给大家上效果图吧。

由于12864有背光，一张是站的比较远拍的，一张是贴着12864屏幕拍的。
看完效果图了，直接给大家上程序吧，总共有四个文件。
1、GPIO.c

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.AIOMUX1.all = 0x0000;     // Dig.IO funct. applies to AIO2,4,6,10,12,14

   GpioCtrlRegs.GPADIR.all = 0xFFFFFFFF;      // GPIO0-GPIO31 are GP outputs
   //GpioCtrlRegs.GPBDIR.all = 0x0000;      // GPIO32-GPIO34 are inputs
   //GpioCtrlRegs.AIODIR.all = 0x0000;      // AIO2,4,6,19,12,14 are digital 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 = 0xffffff00;      // Pullup's enabled GPIO0-GPIO31
   //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

   GpioDataRegs.GPADAT.all = 0x00000000;

   EDIS;

}

2、我自己写的F2802x_LCD12864.h

#ifndef F2802x_LCD12864_H#define F2802x_LCD12864_H#define RS GpioDataRegs.GPADAT.bit.GPIO16#define RW GpioDataRegs.GPADAT.bit.GPIO17#define EN GpioDataRegs.GPADAT.bit.GPIO18void WRITEDATA_LCD12864(unsigned char data);void WRITECMD_LCD12864(unsigned char cmd);void InitLCD12864(void);#endif  // end of F2802x_LCD12864_H definition

3、我自己写的F2802x_LCD12864.c

#include "F2802x_Device.h"     // Headerfile Include File#include "F2802x_Examples.h"   // Examples Include File//---------------------------------------------------------------------------// WRITEDATA_LCD12864://---------------------------------------------------------------------------// This function writes data to LCD12864void WRITEDATA_LCD12864(unsigned char data)
{
    unsigned long int tmp;//  tmp=GpioDataRegs.GPADAT.all;tmp=data;
    DELAY_US(1000);
    RS=1;
    RW=0;
    EN=0;
    GpioDataRegs.GPADAT.all=GpioDataRegs.GPADAT.all&0xffffff00;
    DELAY_US(1);
    GpioDataRegs.GPADAT.all=GpioDataRegs.GPADAT.all|(0x000000ff&tmp);
    DELAY_US(10);
    EN=1;
    DELAY_US(10);
    EN=0;
    DELAY_US(1000);
}//---------------------------------------------------------------------------// WRITECMD_LCD12864://---------------------------------------------------------------------------// This function writes cmd to LCD12864void WRITECMD_LCD12864(unsigned char cmd)
{
    unsigned long int tmp;//  tmp=GpioDataRegs.GPADAT.all;tmp=cmd;
    DELAY_US(1000);
    RS=0;
    RW=0;
    EN=0;
    GpioDataRegs.GPADAT.all=GpioDataRegs.GPADAT.all&0xffffff00;
    DELAY_US(1);
    GpioDataRegs.GPADAT.all=GpioDataRegs.GPADAT.all|(0x000000ff&tmp);
    DELAY_US(10);
    EN=1;
    DELAY_US(10);
    EN=0;
    DELAY_US(1000);
}//---------------------------------------------------------------------------// InitLCD12864://---------------------------------------------------------------------------// This function initializes the LCD12864 to a known (default) state.// such as FUNCTION SET,DSIPLAY SET,CLEAR SCREENvoid InitLCD12864(void)
{
    DELAY_US(10000);
    WRITECMD_LCD12864(0x30);
    DELAY_US(1000);
    WRITECMD_LCD12864(0x30);
    DELAY_US(100);
    WRITECMD_LCD12864(0x0c);
    DELAY_US(1000);
    WRITECMD_LCD12864(0x01);
    DELAY_US(10000);
    WRITECMD_LCD12864(0x06);
    DELAY_US(10000);
}

4、主函数main.c

#include "DSP28x_Project.h"     // Device Headerfile and Examples Include File

void main(void)
{

// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2802x_SysCtrl.c file.   InitSysCtrl();

// Step 2. Initalize GPIO:
// This example function is found in the DSP2802x_Gpio.c file and// illustrates how to set the GPIO to it's default state.   InitGpio();

// 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 DSP2802x_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 DSP2802x_DefaultIsr.c.
// This function is found in DSP2802x_PieVect.c.   InitPieVectTable();

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2802x_InitPeripherals.c// InitPeripherals(); // Not required for this example

// Step 5. User specific code:

   InitLCD12864();

   WRITECMD_LCD12864(0x80);
   WRITEDATA_LCD12864('a');
   WRITECMD_LCD12864(0x90);
   WRITEDATA_LCD12864('a');
   WRITECMD_LCD12864(0x88);
   WRITEDATA_LCD12864('a');
   WRITECMD_LCD12864(0x98);
   WRITEDATA_LCD12864('a');   while(1)
   {
//     GpioDataRegs.GPATOGGLE.all=0x000000ff;
//       DELAY_US(1000);
   }
}

经过验证，上面12864并行驱动文件是可用的，但是也只是最基础的驱动，像描点、画图、写字符串之类的，大家可以在我的基础上进行补充。等后面我们其他的课程需要串行驱动的时候，我们再来整理串行12864的驱动。今晚先这样了，我要去整理周四答辩的胶片和周五要提交给客户的报告。

CCS5.4+Proteus8的F28027实践课六、实验板焊接调试（12864部分）

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