MSP432P401R: 有两个引脚P2.0和P2.1一直输出高电平

Part Number: MSP432P401R

之前有一次下载代码之后，P2控制的那三个发光二极管，有两个就一直亮着，分别是P2.0和P2.1控制的红灯和绿灯，无论是代码覆盖还是按下复位按钮这两个引脚的输出一直是高电平，而且板子跟电脑接上之后，板子就会慢慢发热，怎么解决？

Susan Yang：

请问您现在使用的是TI launchpad？

Yang Dehao Yang 说：无论是代码覆盖还是按下复位按钮这两个引脚的输出一直是高电平

烧录TI的例程是否可以成功运行？

Yang Dehao Yang 说：而且板子跟电脑接上之后，板子就会慢慢发热

是否有测量相关电压？根据您的描述，板子硬件出现问题的概率比较大

,

Yang Dehao Yang：

代码烧录覆盖了，都是正常运行的，只有这两个灯不正常，然后这两个角的电压输出一直都是高电平来着

,

Susan Yang：

请尝试下面的代码

/* --COPYRIGHT--,BSD_EX* Copyright (c) 2013, 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.**********************************************************************************MSP432 CODE EXAMPLE DISCLAIMER** MSP432 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 https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_OtherMCU_MSPDRIVERLIB for an API functional* library & https://dev.ti.com/pinmux/ for a GUI approach to peripheral configuration.** --/COPYRIGHT--*/
//******************************************************************************
//MSP432P401 Demo - Software Toggle P1.0
//
//Description: Toggle P1.0 by xor'ing P1.0 inside of a software loop.
//ACLK = 32.768kHz, MCLK = SMCLK = default DCO~1MHz
//
//MSP432P401x
//-----------------
///|\||
//| ||
//--|RST|
//||
//|P1.0|-->LED
//
//William Goh
//Texas Instruments Inc.
//June 2016 (updated) | November 2013 (created)
//Built with CCSv6.1, IAR, Keil, GCC
//******************************************************************************
#include "ti/devices/msp432p4xx/inc/msp.h"
#include <stdint.h>int main(void) {volatile uint32_t i;WDT_A->CTL = WDT_A_CTL_PW |// Stop WDTWDT_A_CTL_HOLD;P2->DIR |= BIT0;// P2.0 set as outputwhile (1)// continuous loop{P2->OUT ^= BIT0;// Blink P2.0 LEDfor (i = 20000; i > 0; i--);// Delay}
}

运行后LED2，红色的LED，会闪烁