使用内部spi.txt

自己用的一些小程序,lpc2148主芯片

#include "LPC2294.h"
#include "config.h"
#include "stdio.h"

#define BEEP 1<<24
#define LEDS3 0x07<<28
#define HC595_CS 1<<7
#define KEY0 1<<16
#define KEY1 1<<17
#define KEY2 1<<18
#define KEY3 1<<19

void DelayNS(uint32 dly)
{
	uint32 i;
	for(;dly>0;dly--)
	for(i=0;i<50000;i++);
}

void MSPI_Init(void)
{
	PINSEL0=(PINSEL0&(~(0x3F<<8)))|(0x15<<8);
	SPCCR=0x52;
	SPCR=(0<<3)|(1<<4)|(1<<5)|(0<<6)|(0<<7);
}

uint8 MSPI_SendData(uint8 data)
{
	IO0CLR=HC595_CS;
	SPI_SPDR=data;
	while(0==(SPI_SPSR&0x80));
	IO0SET=HC595_CS;
	return(SPI_SPDR);
}

uint8 DISP_TAB[19]={
	0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,
	0x88,0x83,0xC6,0xA1,0x86,0x8E,
	0xC7,0x8C,0xC6};

int main(void)
{
	 uint8 i;
	 IO0DIR|=HC595_CS;
	 IO0DIR|=LEDS3;
	 MSPI_Init();
	 while(1) 
	 {
	 for(i=0;i<3;i++)
	 {
	 	IO0SET=~(LEDS3&(1<<(30-i)));
		DelayNS(5);
		IO0CLR=LEDS3&(1<<(30-i));
		DelayNS(5);
		MSPI_SendData(DISP_TAB[i]);

	 }
	 }
}