[菜农助学交流] 第五批之5 GPIO LED BEEP UART

#include <stdio.h>

#include "NUC1xx.h"

#include "DrvGPIO.h"

#include "DrvUART.h"

#include "DrvSYS.h"





uint8_t writechar1[1] ={0x55};//default write char

uint8_t getchar1; 



//uart set//n,8,1,9600

void uart_init(void)

{

STR_UART_T param;

DrvSYS_SelectIPClockSource(E_SYS_UART_CLKSRC, 0); 

DrvGPIO_InitFunction(E_FUNC_UART0); 



param.u32BaudRate = 9600; 

param.u8cDataBits = DRVUART_DATABITS_8; 

param.u8cStopBits = DRVUART_STOPBITS_1; 

param.u8cParity = DRVUART_PARITY_NONE; 

param.u8cRxTriggerLevel = DRVUART_FIFO_1BYTES; 

param.u8TimeOut = 0; 

DrvUART_Open(UART_PORT0, ¶m); 

}



void Sys_Init()

{



UNLOCKREG(); 

SYSCLK->WRCON.XTL12M_EN = 1;//12M 

DrvSYS_Delay(5000); 

LOCKREG();



uart_init();



DrvGPIO_Open(E_GPB, 10, E_IO_OUTPUT);//GPB10 output 

DrvGPIO_ClrBit(E_GPB, 10);//if not clear GPB10, the buzzer will on. the default output is 0xffff;



DrvGPIO_Open(E_GPA,2, E_IO_OUTPUT); //GPA2 output, LED1

DrvGPIO_Open(E_GPA,3, E_IO_OUTPUT); //GPA3 output, LED2

}



void delay_ms(void)//delay form xiaobing's source code

{

uint32_t i,j;

for(i=1000;i>0;i--)

for(j=2395;j>0;j--);

}



int main (void)

{

Sys_Init();



while(1)

{

printf("hello world \n");//use printf to sent char from uart



DrvUART_Write(UART_PORT0,writechar1,1); //driver write uart

DrvSYS_Delay(5000);

printf("\n");



printf("input a char\n");//tell user to input a char

DrvSYS_Delay(5000);



while(UART0->ISR.RDA_IF==0);//stop here, till a char is received from uart to fifo

DrvUART_Read(UART_PORT0,writechar1,1);//driver read uart



DrvSYS_Delay(5000);

DrvUART_Write(UART_PORT0,writechar1,1);//driver write uart 

DrvSYS_Delay(5000);

printf("\n");



printf("input a char\n");

DrvSYS_Delay(5000);//stop here, till a char is received from uart

getchar1=getchar();//use getchar to receive char from uart

DrvSYS_Delay(5000); 

printf("the char you input is %c\n",getchar1);

DrvSYS_Delay(5000);

// scanf("%c\n",&getchar1);

getchar1=getchar();//use getchar to receive char from uart

DrvSYS_Delay(5000);

printf("the char you input is ");

putchar(getchar1);

DrvSYS_Delay(5000);

putchar('\n');

putchar('b');//use putchar to send char to uart 

putchar('y');

putchar('e');

putchar('\n');



while(1)//led2 blinks, and buzzer on and off alternate

{

DrvGPIO_ClrBit(E_GPA,2);//GPA2=0

DrvGPIO_ClrBit(E_GPB, 10); //GPB10=0

delay_ms();



GPIOA->DOUT ^= 0x8; //LED2 turns on and off



DrvGPIO_SetBit(E_GPA,2);//GPA2=1

DrvGPIO_SetBit(E_GPB, 10);//GPB10=1

delay_ms(); 

}

}



}