main.c

来自「Hitex LPC2100 insider guide source code」· C语言 代码 · 共 61 行

#include <LPC21xx.H> 
#include <stdio.h>

void UART0 (void);




int main(void)
{


PLLCFG = 0x03;				// Set multiplier and divider of PLL
PLLCON = 0x01;				// Enable the PLL

PLLFEED = 0xAA;				// Update PLL registers
PLLFEED = 0x55;

while (!(PLLSTAT & 0x400)) 	// test Lock bit
{
PLLFEED = 0xAA;				// not sure if this is necessary
PLLFEED = 0x55;
}
PLLCON = 0x03;				// Connect the PLL

PLLFEED = 0xAA;				//Update PLL registers
PLLFEED = 0x55;

VPBDIV = 0x02;			   //Set the VLSI Peripheral bus to Divide by 2

UART0 ();				   //Initilise the UART

while(1)
{
printf("Hello from the LPC2129 \n"); //Call the prinfF function

}

}

void UART0 (void)
{
PINSEL0 = 0x05; 		// Select TxD and RxD on pin connect block
U0LCR = 0x80;			//Enable programming of divisor latches

U0DLL = 0x60;			//Program the divisor latch for 19200 baud
U0DLM = 0x00;

U0LCR = 0x33;			//Program the line control 8\N\1
U0FCR = 0x4F;			//enable the FIFO's
			
}