结果是6666，而且还是下面少一横的6，求解！！
#include "DSP2833x_Device.h" // DSP2833x Headerfile Include File
#include "DSP2833x_Examples.h" // DSP2833x Examples Include File
/********************************宏定义数码管位选 IO 接口*******************************************/
#define SET_BIT4 GpioDataRegs.GPBSET.bit.GPIO58 = 1 //与外设板 8_LEDS 端子的 IO52 对应
#define RST_BIT4 GpioDataRegs.GPBCLEAR.bit.GPIO58 = 1 //与外设板 8_LEDS 端子的 IO52 对应
#define SET_BIT3 GpioDataRegs.GPBSET.bit.GPIO59 = 1 //与外设板 8_LEDS 端子的 IO53 对应
#define RST_BIT3 GpioDataRegs.GPBCLEAR.bit.GPIO59 = 1 //与外设板 8_LEDS 端子的 IO53 对应
#define SET_BIT2 GpioDataRegs.GPBSET.bit.GPIO62 = 1 //与外设板 8_LEDS 端子的 IO54 对应
#define RST_BIT2 GpioDataRegs.GPBCLEAR.bit.GPIO62 = 1 //与外设板 8_LEDS 端子的 IO54 对应
#define SET_BIT1 GpioDataRegs.GPBSET.bit.GPIO63 = 1 //与外设板 8_LEDS 端子的 IO55 对应
#define RST_BIT1 GpioDataRegs.GPBCLEAR.bit.GPIO63 = 1 //与外设板 8_LEDS 端子的 IO55 对应
/*****************************************************************************************************/
/*********************************************函数申明************************************************/
void delay(Uint32 t);
void DisData_Trans(Uint16 data);
void Sellect_Bit(Uint16 i);
void Init_LEDS_Gpio(void);
void spi_xmit(Uint16 a);
void spi_fifo_init(void);
void spi_init(void);
void delay(Uint32 t);
/*****************************************************************************************************/
/************************************定义相关变量*********************************************/
unsigned char msg[10]={0xC0,0xf9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //段码：0~9
unsigned char DisData_Bit[4] = {0}; //存放拆分后的四位数字
Uint16 DisData = 0; //显示的数字
Uint16 Loop = 0; //循环扫描变量
/*****************************************************************************************************/
/******************************数码管位选 IO 接口初始化*******************************************/
void Init_LEDS_Gpio(void)
{
EALLOW;
GpioCtrlRegs.GPBPUD.bit.GPIO58= 0; // Enable pullup on GPIO11
GpioDataRegs.GPBSET.bit.GPIO58 = 1; // Load output latch
GpioCtrlRegs.GPBMUX2.bit.GPIO58 = 0; // GPIO16 = GPIO
GpioCtrlRegs.GPBDIR.bit.GPIO58 = 1; // GPIO16 = output
GpioCtrlRegs.GPBPUD.bit.GPIO59= 0; // Enable pullup on GPIO11
GpioDataRegs.GPBSET.bit.GPIO59 = 1; // Load output latch
GpioCtrlRegs.GPBMUX2.bit.GPIO59 = 0; // GPIO16 = GPIO
GpioCtrlRegs.GPBDIR.bit.GPIO59 = 1; // GPIO16 = output
GpioCtrlRegs.GPBPUD.bit.GPIO62 = 0; // Enable pullup on GPIO11
GpioDataRegs.GPBSET.bit.GPIO62 = 1; // Load output latch
GpioCtrlRegs.GPBMUX2.bit.GPIO62 = 0; // GPIO17 = GPIO
GpioCtrlRegs.GPBDIR.bit.GPIO62 = 1; // GPIO17 = output
GpioCtrlRegs.GPBPUD.bit.GPIO63 = 0; // Enable pullup on GPIO11
GpioDataRegs.GPBSET.bit.GPIO63 = 1; // Load output latch
GpioCtrlRegs.GPBMUX2.bit.GPIO63 = 0; // GPIO19 = GPIO
GpioCtrlRegs.GPBDIR.bit.GPIO63 = 1; // GPIO19 = output
EDIS;
RST_BIT1;
RST_BIT2;
RST_BIT3;
RST_BIT4;
}
/*****************************************************************************************************/
/******************************数码管位选函数（从低位到高位扫描）***************************************************/
void Sellect_Bit(Uint16 i)
{
switch(i)
{
case 0:
RST_BIT4; //关断数码管第四位
SET_BIT1; //选通数码管第一位
break;
case 1:
RST_BIT1; //关断数码管第一位
SET_BIT2; //选通数码管第二位
break;
case 2:
RST_BIT2; //关断数码管第二位
SET_BIT3; //选通数码管第三位
break;
case 3:
RST_BIT3; //关断数码管第三位
SET_BIT4; //选通数码管第四位
break;
default:
break;
}
}
/*****************************************************************************************************/
/************************** 拆分要显示的四位数保存到数组DisData_Trans【】*****************************/
void DisData_Trans(Uint16 data)
{
DisData_Bit[3] = data / 1000; //千位数
DisData_Bit[2] = data % 1000 / 100 ; //百位数
DisData_Bit[1] = data % 100 / 10; //十位数
DisData_Bit[0] = data % 10; //个位数
}
/*****************************************************************************************************/
/*********************************************延时函数************************************************/
void delay(Uint32 t)
{
Uint32 i = 0;
for (i = 0; i < t; i++) {};
}
/*****************************************************************************************************/
/*********************************************Spi初始化************************************************/
void spi_init()
{
SpiaRegs.SPICCR.all =0x004F; // Reset on, rising edge, 16-bit char bits
//0x000F对应Rising Edge，0x004F对应Falling Edge
SpiaRegs.SPICTL.all =0x0006; // Enable master mode, normal phase,
// enable talk, and SPI int disabled.
SpiaRegs.SPIBRR =0x007F;
SpiaRegs.SPICCR.all =0x00DF; // Relinquish SPI from Reset
SpiaRegs.SPIPRI.bit.FREE = 1; // Set so breakpoints don't disturb xmission
}
/*****************************************************************************************************/
/****************************************Spi模块FIFO设置**********************************************/
void spi_fifo_init()
{
// Initialize SPI FIFO registers
SpiaRegs.SPIFFTX.all=0xE040;
SpiaRegs.SPIFFRX.all=0x204f;
SpiaRegs.SPIFFCT.all=0x0;
}
/*****************************************************************************************************/
/*********************************************Spi发送************************************************/
void spi_xmit(Uint16 a)
{
SpiaRegs.SPITXBUF=a;
}
/*****************************************************************************************************/
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
// Setup only the GP I/O only for SPI-A functionality
EALLOW;
GpioCtrlRegs.GPAMUX1.all = 0x0; // GPIO pin
GpioCtrlRegs.GPADIR.all = 0xFF; // Output pin
GpioDataRegs.GPADAT.all =0xFF; // Close LEDs
EDIS;
InitSpiaGpio(); //2802 SPIB
Init_LEDS_Gpio();
// 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
spi_fifo_init(); // Initialize the Spi FIFO
spi_init(); // init SPI
for(;;)
{
DisData_Trans(DisData); //拆分四位数
for(Loop=0;Loop<4;Loop++) //分别显示四位
{
Sellect_Bit(Loop); //选择要扫描的数码管位
if(DisData_Bit[4]==9)
spi_xmit(msg[DisData_Bit[Loop]]); //串行输出要显示的数字
delay(25000); //延时配合人眼反应时间
}
DisData++; //显示数字自加
if(DisData > 9999) //防止溢出 归零
DisData = 0;
}
}
//===========================================================================
// No more.
//===========================================================================
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