文章详情

实验三

作者：

linzy 浏览：214 2021年11月26日 15:09

```
#include <stdarg.h>
/************UART.c********************************************/
#define ULCON0     (*((volatile unsigned long *)0x7F005000))
#define UCON0      (*((volatile unsigned long *)0x7F005004))
#define UFCON0     (*((volatile unsigned long *)0x7F005008))
#define UMCON0     (*((volatile unsigned long *)0x7F00500C))
#define UTRSTAT0   (*((volatile unsigned long *)0x7F005010))
#define UFSTAT0    (*((volatile unsigned long *)0x7F005018))
#define UTXH0      (*((volatile unsigned char *)0x7F005020))
#define URXH0      (*((volatile unsigned char *)0x7F005024))
#define UBRDIV0    (*((volatile unsigned short *)0x7F005028))
#define UDIVSLOT0  (*((volatile unsigned short *)0x7F00502C))
#define GPAPUD     (*((volatile unsigned long *)0x7F008008)) 
#define GPACON     (*((volatile unsigned long *)0x7F008000))
#define rTCFG0     (*((volatile unsigned long *)0x7F006000))
#define rTCFG1     (*((volatile unsigned long *)0x7F006004))
#define rTCON     (*((volatile unsigned long *)0x7F006008))
#define rTCNTB0     (*((volatile unsigned long *)0x7F00600C))
#define rTCMPB0     (*((volatile unsigned long *)0x7F006010))
#define rTCON     (*((volatile unsigned long *)0x7F006008))
#define rADCCON     (*((volatile unsigned long *)0x7E00B000))
#define rADCDAT0     (*((volatile unsigned long *)0x7E00B00C))
#define LOOP 10000
volatile int preScaler = 255;
 
void delay(int times)
{
	int i;
	for(;times>0;times--)
		for(i=0;i<3000;i++);
} 
void init_uart(void)
{
	GPACON = (GPACON & ~(0xff<<0)) | (0x22<<0);  
    GPAPUD = (GPAPUD & ~(0xf<<0)) | (0x1<<0);      // RXD0: Pull-down, TXD0: pull up/down disable
    
    
	ULCON0=ULCON0&(~0xF)|(0<<6)|(0<<3)|(0<<2)|(3<<0);;
	UCON0=UCON0&(~0x3F)|(0<<10)|(1<<9)|(1<<8)|(0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1<<0);
	UFCON0=UFCON0&(~0xF)|(0<<6)|(0<<4)|(0<<2)|(0<<1)|(0<<1);
	UMCON0 = (0<<5)|(0<<4)|(0<<0); 
	UBRDIV0=34;
	UDIVSLOT0=0xDDDD;
	
}
 
char getchar(void)
{
	while (!(UTRSTAT0&0x01)); /*RX_FIFO EMPTY,绛夊緟*/
	return URXH0;
}
 
void putchar(char c)
{
	while (!(UTRSTAT0&0x02));   /* TX_FIFO_FULL=1,绛夊緟*/
	UTXH0 = c;
}
void Uart_Sendstring(char *str)
{
	while(*str)
		putchar(*str++);
	
}
void Uart_Printf(char *fmt,...)
{
	va_list ap;
	char string[256];
	
	va_start(ap,fmt);
	
	vsprintf(string,fmt,ap);
	Uart_Sendstring(string);
	va_end(ap);	
}

int ReadAdc(int ch)
{
	int i;
	static int prevCh=-1;
	rADCCON=(1<<14)|(preScaler<<6)|(ch<<3);
	if(prevCh!=ch)
	{
		rADCCON=(1<<14)|(preScaler<<6)|(ch<<3);
		for(i =0;i<LOOP;i++);
		prevCh=ch;
	}
	rADCCON|=0x1;
	while(rADCCON&0x01);
	while(!(rADCCON&0x8000));
	return ((int)rADCDAT0 & 0x3ff);
}

/***********************main.c************************************/
int res;
int main()
{
	char c;
	
	init_uart();
	
	
	while (1)
	{
		delay(100);
		c = getchar();
		res = ReadAdc(0);
		putchar(res);
		putchar(res>>8);
	}
	
}

```

实验三

请登录后回复

共有0条评论