TI中文支持网TI官网给的例程都没收到数据，要么就是不断的发数据。
Yao Zhuang：
回复 灰小子:
谢谢大佬了 这个不行
/* –COPYRIGHT–,BSD_EX * Copyright (c) 2012, Texas Instruments Incorporated * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Texas Instruments Incorporated nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ******************************************************************************* * * MSP430 CODE EXAMPLE DISCLAIMER * * MSP430 code examples are self-contained low-level programs that typically * demonstrate a single peripheral function or device feature in a highly * concise manner. For this the code may rely on the device's power-on default * register values and settings such as the clock configuration and care must * be taken when combining code from several examples to avoid potential side * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware * for an API functional library-approach to peripheral configuration. * * –/COPYRIGHT–*///******************************************************************************// MSP430F552x Demo – USCI_A0, 9600 UART, SMCLK, LPM0, Echo with over-sampling//// Description: Echo a received character, RX ISR used. Normal mode is LPM0.// USCI_A0 RX interrupt triggers TX Echo.// If UCOS16=1, UCBRx=Fbrclk/(16*Baudrate)// Baud rate divider with UCBRx = 1MHz/(16*9600) = ~6.8// ACLK = REFO = ~32768Hz, MCLK = SMCLK = default DCO = 32 x ACLK = 1048576Hz// See User Guide for baud rate divider table//// MSP430F552x// —————–// /|\| |// | | |// –|RST |// | |// | P3.3/UCA0TXD|————>// | | 9600 – 8N1// | P3.4/UCA0RXD|<————//// Bhargavi Nisarga// Texas Instruments Inc.// April 2009// Built with CCSv4 and IAR Embedded Workbench Version: 4.21//******************************************************************************
#include <msp430.h>
int main(void){ WDTCTL = WDTPW + WDTHOLD; // Stop WDT P3SEL = BIT3+BIT4; // P3.4,5 = USCI_A0 TXD/RXD UCA0CTL1 |= UCSWRST; // **Put state machine in reset** UCA0CTL1 |= UCSSEL_2; // SMCLK UCA0BR0 = 6; // 1MHz 9600 (see User's Guide) UCA0BR1 = 0; // 1MHz 9600 UCA0MCTL = UCBRS_0 + UCBRF_13 + UCOS16; // Modln UCBRSx=0, UCBRFx=0, // over sampling UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine** UCA0IE |= UCRXIE; // Enable USCI_A0 RX interrupt
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled __no_operation(); // For debugger}
// Echo back RXed character, confirm TX buffer is ready first#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)#pragma vector=USCI_A0_VECTOR__interrupt void USCI_A0_ISR(void)#elif defined(__GNUC__)void __attribute__ ((interrupt(USCI_A0_VECTOR))) USCI_A0_ISR (void)#else#error Compiler not supported!#endif{ switch(__even_in_range(UCA0IV,4)) { case 0:break; // Vector 0 – no interrupt case 2: // Vector 2 – RXIFG while (!(UCA0IFG&UCTXIFG)); // USCI_A0 TX buffer ready? UCA0TXBUF = UCA0RXBUF; // TX -> RXed character break; case 4:break; // Vector 4 – TXIFG default: break; }}
这个才行 之前没注意到的官网第四个例程
Yao Zhuang：
回复 Yao Zhuang:
十分感谢 如此照顾新手哈
Yao Zhuang：
回复 Yao Zhuang:
UCA0MCTL |= UCBRS_1 + UCBRF_0;// Modulation UCBRSx=1, UCBRFx=0和UCA0MCTL = UCBRS_0 + UCBRF_13 + UCOS16; // Modln UCBRSx=0, UCBRFx=0不同还有波特率不同为什么就收不到了
