#include "DSP28_Device.h"#include "DSP28_Globalprototypes.h"// Prototype statements for functions found within this file.// interrupt void ISRTimer2(void);void delay_loop(void);void Gpio_select(void);unsigned int var1 = 0;unsigned int var2 = 0;unsigned int var3 = 0;unsigned int var4 = 0;unsigned int var5 = 0;void main(void){ int ii=0; int i; InitSysCtrl(); // Disable and clear all CPU interrupts: DINT; IER = 0x0000; IFR = 0x0000; // Initialize Pie Control Registers To Default State: InitPieCtrl(); InitPieVectTable(); InitGpio();// Run GPIO test var1 = 0x0000; // sets GPIO Muxs as I/Os var2 = 0xFFFF; // sets GPIO DIR as outputs var3 = 0x0000; // sets the Input qualifier values // Gpio_select(); // Toggle I/Os using DATA register for ever while(1) { /* GpioDataRegs.GPADAT.all = 0x000A; for(ii = 0; ii < 100; ii++) { delay_loop(); } GpioDataRegs.GPADAT.all = 0x0005; delay_loop(); for(ii = 0; ii < 100; ii++) { delay_loop(); } */ for(i = 0; i < 4; i++) { GpioDataRegs.GPADAT.all = 0x08 >> i; for(ii = 0; ii < 50; ii++) { delay_loop(); } GpioDataRegs.GPACLEAR.all = 0x08 >> i; for(ii = 0; ii < 10; ii++) { //delay_loop(); } } }} void delay_loop(){ short i; for (i = 0; i < 5000; i++) {}}void Gpio_select(void){ EALLOW; GpioMuxRegs.GPAMUX.all=var1; // GpioMuxRegs.GPBMUX.all=var1; GpioMuxRegs.GPADIR.all=var2; // GPIO PORTs as output // GpioMuxRegs.GPBDIR.all=var2; // GPIO DIR select GPIOs as output GpioMuxRegs.GPAQUAL.all=var3; // Set GPIO input qualifier values // GpioMuxRegs.GPBQUAL.all=var3; EDIS; } 复制代码
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