准备电赛——CCSMSP430F5529标准库——定时器定时多少秒以及定时中断的写法

标签：UCS 电赛中断 void htim CCSMSP430F5529 TIMER GPIO 定时

中断向量

TIMERx_A0_VECTOR 是 CCR0 的中断向量（第一个引脚）
TIMERx_A1_VECTOR 是 TAIV 的中断向量

#define TIMER2_A1_VECTOR        (43 * 1u)                    /* 0xFFD6 Timer2_A5 CC1-4, TA */
#define TIMER2_A0_VECTOR        (44 * 1u)                    /* 0xFFD8 Timer2_A5 CC0 */
#define TIMER1_A1_VECTOR        (48 * 1u)                    /* 0xFFE0 Timer1_A3 CC1-2, TA1 */
#define TIMER1_A0_VECTOR        (49 * 1u)                    /* 0xFFE2 Timer1_A3 CC0 */
#define TIMER0_A1_VECTOR        (52 * 1u)                    /* 0xFFE8 Timer0_A5 CC1-4, TA */
#define TIMER0_A0_VECTOR        (53 * 1u)                    /* 0xFFEA Timer0_A5 CC0 */

定时器A 增计数模式CCR0中断：

定时器初始化：

void Timer_A_Init(void)
{
    Timer_A_initUpModeParam htim = {0};
    htim.clockSource = TIMER_A_CLOCKSOURCE_ACLK;	//时钟源选为ACLK = 32768Hz
    htim.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_64;	//64分频
    htim.timerPeriod = 512 - 1;									//计数值设为512 - 1
    htim.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_DISABLE;
    htim.captureCompareInterruptEnable_CCR0_CCIE = TIMER_A_CCIE_CCR0_INTERRUPT_ENABLE;		//使能CCR0中断
    htim.timerClear = TIMER_A_DO_CLEAR;	//把定时器的定时计数器，分频计数器的计数值清零
    htim.startTimer = true;				//初始化后立即启动定时器
	//中断频率=32768Hz / 64 / 512 = 1Hz
    Timer_A_initUpMode(TIMER_A0_BASE, &htim);
    //配置定时器A0为增计数模式
}

//中断频率=32768Hz / 64 / 512 = 1Hz 也就是1秒进一次中断

中断函数：

#pragma vector=TIMER0_A0_VECTOR
__interrupt
void TIMER0_A0_ISR (void)
{
    GPIO_toggleOutputOnPin(GPIO_PORT_P4, GPIO_PIN7);	//翻转P4.7
}

主函数：

#include "driverlib.h"

#define MCLK_IN_HZ      25000000

#define delay_us(x)     __delay_cycles((MCLK_IN_HZ/1000000*(x)))
#define delay_ms(x)     __delay_cycles((MCLK_IN_HZ/1000*(x)))

void SystemClock_Init(void)
{
    PMM_setVCore(PMM_CORE_LEVEL_3);     //高主频工作需要较高的核心电压

    //XT1引脚复用
    GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN4);
    GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P5, GPIO_PIN5);

    //起振XT1
    UCS_turnOnLFXT1(UCS_XT1_DRIVE_3,UCS_XCAP_3);

    //XT2引脚复用
    GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN2);
    GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P5, GPIO_PIN3);

    //起振XT2
    UCS_turnOnXT2(UCS_XT2_DRIVE_4MHZ_8MHZ);

    //XT2作为FLL参考时钟，先8分频，再50倍频 4MHz / 8 * 50 = 25MHz
    UCS_initClockSignal(UCS_FLLREF, UCS_XT2CLK_SELECT, UCS_CLOCK_DIVIDER_8);
    UCS_initFLLSettle(25000, 50);

    //XT1作为ACLK时钟源 = 32768Hz
    UCS_initClockSignal(UCS_ACLK, UCS_XT1CLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //DCOCLK作为MCLK时钟源 = 25MHz
    UCS_initClockSignal(UCS_MCLK, UCS_DCOCLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //DCOCLK作为SMCLK时钟源 = 25MHz
    UCS_initClockSignal(UCS_SMCLK, UCS_DCOCLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //设置外部时钟源的频率，使得在调用UCS_getMCLK, UCS_getSMCLK 或 UCS_getACLK时可得到正确值
    UCS_setExternalClockSource(32768, 4000000);
}

void Timer_A_Init(void)
{
    Timer_A_initUpModeParam htim = {0};
    htim.clockSource = TIMER_A_CLOCKSOURCE_ACLK;
    htim.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_64;
    htim.timerPeriod = 512 - 1;
    htim.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_DISABLE;
    htim.captureCompareInterruptEnable_CCR0_CCIE = TIMER_A_CCIE_CCR0_INTERRUPT_ENABLE;
    htim.timerClear = TIMER_A_DO_CLEAR;
    htim.startTimer = true;

    Timer_A_initUpMode(TIMER_A0_BASE, &htim);
    //配置定时器A为增计数模式
}

int main(void)
{
    WDT_A_hold(WDT_A_BASE);
    SystemClock_Init();

    GPIO_setAsOutputPin(GPIO_PORT_P4, GPIO_PIN7);

    Timer_A_Init();

    //interrupts enabled
    __bis_SR_register(GIE);

    while(1)
    {

    }
}

#pragma vector=TIMER0_A0_VECTOR
__interrupt
void TIMER0_A0_ISR (void)
{
    GPIO_toggleOutputOnPin(GPIO_PORT_P4, GPIO_PIN7);
}

定时器A 增计数模式TAIE中断：

定时器初始化：

void Timer_A_Init(void)
{
    Timer_A_initUpModeParam htim = {0};
    htim.clockSource = TIMER_A_CLOCKSOURCE_SMCLK;	//时钟源选为SMCLK = 25MHz
    htim.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_5;	//5分频
    htim.timerPeriod = 25000 - 1;									//计数值设为25000 - 1
    htim.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_ENABLE;	//使能TALE中断
    htim.captureCompareInterruptEnable_CCR0_CCIE = TIMER_A_CCIE_CCR0_INTERRUPT_DISABLE;	
    htim.timerClear = TIMER_A_DO_CLEAR;	//把定时器的定时计数器，分频计数器的计数值清零
    htim.startTimer = true;	//初始化后立即启动定时器

    Timer_A_initUpMode(TIMER_A0_BASE, &htim);	
    //配置定时器A为增计数模式
}

//设得中断频率为25MHz / 5 / 25000 = 200Hz 也就是0.005秒进一次中断

中断服务函数：

#pragma vector=TIMER0_A1_VECTOR
__interrupt
void TIMER0_A1_ISR (void)
{
    switch(TA0IV)
    {
        case TA0IV_NONE:
            break;
        case TA0IV_TACCR1:
            break;
        case TA0IV_TACCR2:
            break;
        case TA0IV_TACCR3:
            break;
        case TA0IV_TACCR4:
            break;
        case TA0IV_5:
            break;
        case TA0IV_6:
            break;
        case TA0IV_TAIFG:
            GPIO_toggleOutputOnPin(GPIO_PORT_P4, GPIO_PIN7);
            break;
        default:
            break;
    }
}

TAxIV寄存器的值有：

00h =没有中断等待
02h =中断源:捕获/比较1;中断标志:TAxCCR1 CCIFG; 中断优先级:最高
04h =中断源:捕获/比较2;中断标志:TAxCCR2 CCIFG
06h =中断源:捕获/比较3;中断标志:TAxCCR3 CCIFG
08h =中断源:捕获/比较4;中断标志:TAxCCR4 CCIFG
0ah =中断源:捕获/比较5;中断标志:TAxCCR5 CCIFG
0ch =中断源:捕获/比较6;中断标志:TAxCCR6 CCIFG
0Eh =中断源:定时器溢出;中断标志:TAxCTL TAIFG; 中断优先级:最低

这里是要等定时器溢出进入中断，所以选择最后一个

主函数：

#include "driverlib.h"

#define MCLK_IN_HZ      25000000

#define delay_us(x)     __delay_cycles((MCLK_IN_HZ/1000000*(x)))
#define delay_ms(x)     __delay_cycles((MCLK_IN_HZ/1000*(x)))

void SystemClock_Init(void)
{
    PMM_setVCore(PMM_CORE_LEVEL_3);     //高主频工作需要较高的核心电压

    //XT1引脚复用
    GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN4);
    GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P5, GPIO_PIN5);

    //起振XT1
    UCS_turnOnLFXT1(UCS_XT1_DRIVE_3,UCS_XCAP_3);

    //XT2引脚复用
    GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN2);
    GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P5, GPIO_PIN3);

    //起振XT2
    UCS_turnOnXT2(UCS_XT2_DRIVE_4MHZ_8MHZ);

    //XT2作为FLL参考时钟，先8分频，再50倍频 4MHz / 8 * 50 = 25MHz
    UCS_initClockSignal(UCS_FLLREF, UCS_XT2CLK_SELECT, UCS_CLOCK_DIVIDER_8);
    UCS_initFLLSettle(25000, 50);

    //XT1作为ACLK时钟源 = 32768Hz
    UCS_initClockSignal(UCS_ACLK, UCS_XT1CLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //DCOCLK作为MCLK时钟源 = 25MHz
    UCS_initClockSignal(UCS_MCLK, UCS_DCOCLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //DCOCLK作为SMCLK时钟源 = 25MHz
    UCS_initClockSignal(UCS_SMCLK, UCS_DCOCLK_SELECT, UCS_CLOCK_DIVIDER_1);

    //设置外部时钟源的频率，使得在调用UCS_getMCLK, UCS_getSMCLK 或 UCS_getACLK时可得到正确值
    UCS_setExternalClockSource(32768, 4000000);
}

void Timer_A_Init(void)
{
    Timer_A_initUpModeParam htim = {0};
    htim.clockSource = TIMER_A_CLOCKSOURCE_SMCLK;
    htim.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_5;
    htim.timerPeriod = 25000 - 1;
    htim.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_ENABLE;
    htim.captureCompareInterruptEnable_CCR0_CCIE = TIMER_A_CCIE_CCR0_INTERRUPT_DISABLE;
    htim.timerClear = TIMER_A_DO_CLEAR;
    htim.startTimer = true;
	//设得中断频率为25MHz / 5 / 25000 = 200Hz
    Timer_A_initUpMode(TIMER_A0_BASE, &htim);
    //配置定时器A为增计数模式
}

int main(void)
{
    WDT_A_hold(WDT_A_BASE);
    SystemClock_Init();

    GPIO_setAsOutputPin(GPIO_PORT_P4, GPIO_PIN7);

    Timer_A_Init();

    //interrupts enabled
    __bis_SR_register(GIE);

    while(1)
    {

    }
}

#pragma vector=TIMER0_A1_VECTOR
__interrupt
void TIMER0_A1_ISR (void)
{
    switch(TA0IV)
    {
        case TA0IV_NONE:
            break;
        case TA0IV_TACCR1:
            break;
        case TA0IV_TACCR2:
            break;
        case TA0IV_TACCR3:
            break;
        case TA0IV_TACCR4:
            break;
        case TA0IV_5:
            break;
        case TA0IV_6:
            break;
        case TA0IV_TAIFG:
            GPIO_toggleOutputOnPin(GPIO_PORT_P4, GPIO_PIN7);
            break;
        default:
            break;
    }
}

标签：UCS,电赛,中断,void,htim,CCSMSP430F5529,TIMER,GPIO,定时
From： https://blog.csdn.net/2302_80529671/article/details/139220403

准备电赛——CCSMSP430F5529标准库——定时器定时多少秒以及定时中断的写法

中断向量

定时器A 增计数模式CCR0中断：

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