一、在电赛开始的前一天中午，突然得知2021电赛电赛推迟至8月11号至14号，现在晚上又通知变成了择期，比赛时间遥遥无期

既然如此那就再继续拼搏吧，顺便也分享一下备赛以来对msp432的学习

二、前情提示，本文适用于msp432库函数开发使用者，且已具备msp432环境（我使用的是keil），已下载SDK包，并有simeplink例程。若需要这些资源的，可以在评论区回复，我看见了会及时发送的！

三、今天要分享的是使用msp432库函数输出多路pwm，用以控制基础的电机转动。
1）所用到的引脚 P7.4~P7.7 、P2.4~P2.7共八路提供选择

2）查看数据手册

由手册可以知道，定时器TA0，寄存器CCR0~CCR4对应P2.4 - P2.7
定时器TA1，寄存器CCR0~CCR4对应P7.4 - P7.7

3）输出PWM初始化

/* Timer_A Compare Configuration Parameter  (PWM1) */
Timer_A_PWMConfig compareConfig_PWM1 =
{
    
       TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_10,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_1,			// Use CCR1  7.7
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

1.默认时钟源SMCLK，但可在主函数提前设置DCO时钟源，实现主频48MHZ；
2.TIMER_A_CLOCKSOURCE_DIVIDER_10,预分频系数设置为10；
3. 6000,占空比设总值
4. TIMER_A_CAPTURECOMPARE_REGISTER_1 使用寄存器CCR1
5. 默认翻转电平
6. 0，初始占空比设值

4）设置引脚输出PWM

/* Setting P7.7 and P7.4 and peripheral outputs for CCR */
    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P7,GPIO_PIN6 + GPIO_PIN7 + GPIO_PIN4 + GPIO_PIN5, 
    GPIO_PRIMARY_MODULE_FUNCTION);
		
	/* Setting P2.7 and P2.4 and peripheral outputs for CCR */
	MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P2,GPIO_PIN6 + GPIO_PIN7 + GPIO_PIN4 + GPIO_PIN5, 
	GPIO_PRIMARY_MODULE_FUNCTION);
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM1);  //7.7 ~ 7.4

    MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM2);  
		
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM3);
	
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM4);
	
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM5);  //2.4 ~ 2.7
   
    MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM6);
		
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM7);
	
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM8);
	
	

5）设置自己需要的占空比大小（基准为6000）

    compareConfig_PWM1.dutyCycle = 600;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM1);
	
	compareConfig_PWM2.dutyCycle = 1200;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM2);
	
	compareConfig_PWM3.dutyCycle = 1800;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM3);
	
	compareConfig_PWM4.dutyCycle = 2400;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM4);
	
	compareConfig_PWM5.dutyCycle = 3000;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM5);
	
	compareConfig_PWM6.dutyCycle = 3600;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM6);
	
	compareConfig_PWM7.dutyCycle = 4200;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM7);
	
	compareConfig_PWM8.dutyCycle = 4800;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM8);

如第一句占空比大小为600 / 6000 = 0.1即10%大小的占空比

6）设置MSP432时钟源最高主频48MHZ

	MAP_PCM_setPowerState(PCM_AM_LDO_VCORE1);
    MAP_CS_setDCOCenteredFrequency(CS_DCO_FREQUENCY_48);

总体的代码如下

//***************************************************************************************
//  		 Pursuit of excellence
//  Description; Multifunctional integration file.
//  ACLK = n/a, MCLK = SMCLK = default DCO
//
//  Header:     My integration Library 
//  File Name:  ADC project
//  Author:     Mr. Wang Yin
//  Date:       July 31, 2021
//  place:      Chengdu University of information engineering 5402
//***************************************************************************************
#include "pwm.h"

/* Timer_A Compare Configuration Parameter  (PWM1) */
Timer_A_PWMConfig compareConfig_PWM1 =
{
    
       TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_10,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_1,			// Use CCR1  7.7
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

/* Timer_A Compare Configuration Parameter (PWM2) */
Timer_A_PWMConfig compareConfig_PWM2 =
{
    
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_10,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_2,			// Use CCR2   7.6
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

Timer_A_PWMConfig compareConfig_PWM3 =
{
    
       TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_10,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_3,			// Use CCR3    7.5
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

Timer_A_PWMConfig compareConfig_PWM4 =
{
    
       TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_10,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_4,			// Use CCR4     7.4
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

//TA0
Timer_A_PWMConfig compareConfig_PWM5 =
{
    
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_64,				
        15000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_1,			// Use CCR1     2.4
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

Timer_A_PWMConfig compareConfig_PWM6 =
{
    
       TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_2,			// Use CCR1     2.5
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

Timer_A_PWMConfig compareConfig_PWM7 =
{
    
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,				
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_3,			// Use CCR1     2.6
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};

Timer_A_PWMConfig compareConfig_PWM8 =
{
    
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,				 
        6000,                                      //占空比设总值
        TIMER_A_CAPTURECOMPARE_REGISTER_4,			// Use CCR1     2.7
        TIMER_A_OUTPUTMODE_RESET_SET,				 // Toggle output but
        0//初始占空比设值                        //  Duty Cycle
};  
/* Setting P7.7 and P7.4 and peripheral outputs for CCR */
    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P7,GPIO_PIN6 + GPIO_PIN7 + GPIO_PIN4 + GPIO_PIN5, GPIO_PRIMARY_MODULE_FUNCTION);
		
	/* Setting P2.7 and P2.4 and peripheral outputs for CCR */
	MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P2,GPIO_PIN6 + GPIO_PIN7 + GPIO_PIN4 + GPIO_PIN5, GPIO_PRIMARY_MODULE_FUNCTION);
	
  MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM1);  //7.7 ~ 7.4

    MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM2);  
		
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM3);
	
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM4);
	
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM5);  //2.4 ~ 2.7
   
    MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM6);
		
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM7);
	
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM8);
	compareConfig_PWM1.dutyCycle = 600;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM1);
	
	compareConfig_PWM2.dutyCycle = 1200;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM2);
	
	compareConfig_PWM3.dutyCycle = 1800;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM3);
	
	compareConfig_PWM4.dutyCycle = 2400;
	MAP_Timer_A_generatePWM(TIMER_A1_BASE, &compareConfig_PWM4);
	
	compareConfig_PWM5.dutyCycle = 3000;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM5);
	
	compareConfig_PWM6.dutyCycle = 3600;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM6);
	
	compareConfig_PWM7.dutyCycle = 4200;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM7);
	
	compareConfig_PWM8.dutyCycle = 4800;
	MAP_Timer_A_generatePWM(TIMER_A0_BASE, &compareConfig_PWM8);

通过以上步骤就可以输出多路PWM了，已通过逻辑分析仪测试可用。
最后由于自己也是新学，能力有限，存在问题的地方请大家在评论区指出，谢谢！
下载库函数包 ：https://download.csdn.net/download/cubejava/20692262