usart_init.c

zigbee子节点源代码

#include<msp430x16x.h>
void Usart_Init(void) 
{	
		
        U0CTL  = 0x10;	             // SW  reset, 8-bit transfer, SPI master
	                             // Data on Rising Edge, SMCLK, 3-wire

	U0BR0  = 0x03;		 	     // SPICLK set baud
	U0BR1  = 0;                         // Dont need baud rate control register 2 - clear it
	U0MCTL = 0x52;		 	    // Dont need modulation control
        U0TCTL = SSEL0;
        ME1 |= 0x80;		
	P3SEL= 0x10;				// Select Peripheral functionality (SPI)
	P3DIR= 0x10;	
        U0CTL &= ~SWRST;        // Configure as outputs(SIMO,CLK,CSn)
}