硬知识

16位定时器B(Timer_B)和Timer_A一样，是MSP430单片机的重要资源。Timer_B往往比Timer_A功能更强大一些，MSP430F5529单片机的Timer_B定时器具有7个捕获/比较寄存器。

Timer_B特点及结构

Timer_B定时器具有以下特点：
 具有4种工作模式和4种可选计数长度的异步16位定时/计数器；
 参考时钟源可配置；
 高达7个可配置的捕获/比较寄存器；
 具有PWM输出能力；
 具有同步加载能力的双缓冲区比较锁存；
 具有可对Timer_B中断快速响应的中断向量寄存器。

Timer_B和Timer_A的不同之处列举如下：
① Timer_B计数长度为8位、10位、12位和16位可编程，而Timer_A的计数长度固定为16位。
② Timer_B没有实现Timer_A中的SCCI寄存器位的功能。
③ Timer_B在比较模式下的捕获/比较寄存器功能与Timer_A的不同，增加了比较锁存器。
④ 有些型号芯片中的Timer_B输出实现了高阻抗输出。
⑤ 比较模式的原理有所不同。在Timer_A中，CCRx寄存器中保存与TAR相比较的数据，而在Timer_B中，CCRx寄存器中保存的是要比较的数据，但并不直接与定时计数器TBR相比较，而是将CCRx送到与之相对应的锁存器之后，由锁存器与定时计数器TBR相比较。从捕获/比较寄存器向比较锁存器传输数据的时机也是可以编程的，可以是在写入捕获/比较寄存器后立即传输，也可以由一个定时事件来触发。
⑥ Timer_B支持多种、同步的定时功能，多重的捕获/比较功能和多重的波形输出功能。而且通过对比较数据的两级缓冲，可以实现多个PWM信号周期的同步更新。

Timer_B寄存器

Timer_B寄存器列表如表所示，基址为03C0h。

定时器B API

TIMER_B API被分成三组函数:
处理计时器配置和控制的函数、
处理计时器输出的函数
处理中断处理的函数

处理计时器配置和控制的函数

Timer_B_startCounter(uint16_t baseAddress, uint16_t timerMode)
//开启定时器
Timer_B_initUpMode(uint16_t baseAddress, Timer_B_initUpModeParam ∗param)
//配置Timer_B为增计数模式
Timer_B_initUpDownMode(uint16_t baseAddress, Timer_B_initUpDownModeParam ∗param)
//配置Timer_B为增/减计数模式
Timer_B_initContinuousMode(uint16_t baseAddress, Timer_B_initContinuousModeParam ∗param)
//配置Timer_B为连续计数模式
Timer_B_initCaptureMode(uint16_t baseAddress, Timer_B_initCaptureModeParam ∗param)
//初始化捕获模式
Timer_B_initCompareMode(uint16_t baseAddress, Timer_B_initCompareModeParam ∗param)
//初始化比较模式
Timer_B_clear(uint16_t baseAddress)
//重置/清除计时器、时钟分频器，计数方向，计数。
Timer_B_stop()
//停止Timer_B
Timer_B_initCompareLatchLoadEvent(uint16_t baseAddress, uint16_t compareRegister, uint16_t compareLatchLoadEvent)
//Selects Compare Latch Load Event.
Timer_B_selectLatchingGroup(uint16_t baseAddress, uint16_t groupLatch)
//Selects Timer_B Latching Group.
Timer_B_selectCounterLength(uint16_t baseAddress, uint16_t counterLength)
//选择Timer_B计数器长度(位数)

参数

baseAddress

TIMER_B0_BASE

timerMode

TIMER_B_STOP_MODE
TIMER_B_UP_MODE
TIMER_B_CONTINUOUS_MODE     //[Default]
TIMER_B_UPDOWN_MODE

Timer_B_initUpModeParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_initUpMode() function as the param parameter.
//
//*****************************************************************************
typedef struct Timer_B_initUpModeParam {//! Selects the clock source//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_EXTERNAL_TXCLK [Default]//! - \b TIMER_B_CLOCKSOURCE_ACLK//! - \b TIMER_B_CLOCKSOURCE_SMCLK//! - \b TIMER_B_CLOCKSOURCE_INVERTED_EXTERNAL_TXCLKuint16_t clockSource;//! Is the divider for Clock source.//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_DIVIDER_1 [Default]//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_2//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_3//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_4//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_5//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_6//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_7//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_8//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_10//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_12//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_14//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_16//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_20//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_24//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_28//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_32//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_40//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_48//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_56//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_64uint16_t clockSourceDivider;//! Is the specified Timer_B period. This is the value that gets written//! into the CCR0. Limited to 16 bits[uint16_t]uint16_t timerPeriod;//! Is to enable or disable Timer_B interrupt//! \n Valid values are://! - \b TIMER_B_TBIE_INTERRUPT_ENABLE//! - \b TIMER_B_TBIE_INTERRUPT_DISABLE [Default]uint16_t timerInterruptEnable_TBIE;//! Is to enable or disable Timer_B CCR0 capture compare interrupt.//! \n Valid values are://! - \b TIMER_B_CCIE_CCR0_INTERRUPT_ENABLE//! - \b TIMER_B_CCIE_CCR0_INTERRUPT_DISABLE [Default]uint16_t captureCompareInterruptEnable_CCR0_CCIE;//! Decides if Timer_B clock divider, count direction, count need to be//! reset.//! \n Valid values are://! - \b TIMER_B_DO_CLEAR//! - \b TIMER_B_SKIP_CLEAR [Default]uint16_t timerClear;//! Whether to start the timer immediatelybool startTimer;
} Timer_B_initUpModeParam;

Timer_B_initUpDownModeParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_initUpDownMode() function as the param
//! parameter.
//
//*****************************************************************************
typedef struct Timer_B_initUpDownModeParam {//! Selects the clock source//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_EXTERNAL_TXCLK [Default]//! - \b TIMER_B_CLOCKSOURCE_ACLK//! - \b TIMER_B_CLOCKSOURCE_SMCLK//! - \b TIMER_B_CLOCKSOURCE_INVERTED_EXTERNAL_TXCLKuint16_t clockSource;//! Is the divider for Clock source.//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_DIVIDER_1 [Default]//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_2//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_3//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_4//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_5//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_6//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_7//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_8//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_10//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_12//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_14//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_16//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_20//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_24//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_28//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_32//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_40//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_48//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_56//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_64uint16_t clockSourceDivider;//! Is the specified Timer_B perioduint16_t timerPeriod;//! Is to enable or disable Timer_B interrupt//! \n Valid values are://! - \b TIMER_B_TBIE_INTERRUPT_ENABLE//! - \b TIMER_B_TBIE_INTERRUPT_DISABLE [Default]uint16_t timerInterruptEnable_TBIE;//! Is to enable or disable Timer_B CCR0 capture compare interrupt.//! \n Valid values are://! - \b TIMER_B_CCIE_CCR0_INTERRUPT_ENABLE//! - \b TIMER_B_CCIE_CCR0_INTERRUPT_DISABLE [Default]uint16_t captureCompareInterruptEnable_CCR0_CCIE;//! Decides if Timer_B clock divider, count direction, count need to be//! reset.//! \n Valid values are://! - \b TIMER_B_DO_CLEAR//! - \b TIMER_B_SKIP_CLEAR [Default]uint16_t timerClear;//! Whether to start the timer immediatelybool startTimer;
} Timer_B_initUpDownModeParam;

Timer_B_initContinuousModeParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_initContinuousMode() function as the param
//! parameter.
//
//*****************************************************************************
typedef struct Timer_B_initContinuousModeParam {//! Selects the clock source//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_EXTERNAL_TXCLK [Default]//! - \b TIMER_B_CLOCKSOURCE_ACLK//! - \b TIMER_B_CLOCKSOURCE_SMCLK//! - \b TIMER_B_CLOCKSOURCE_INVERTED_EXTERNAL_TXCLKuint16_t clockSource;//! Is the divider for Clock source.//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_DIVIDER_1 [Default]//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_2//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_3//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_4//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_5//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_6//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_7//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_8//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_10//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_12//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_14//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_16//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_20//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_24//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_28//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_32//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_40//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_48//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_56//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_64uint16_t clockSourceDivider;//! Is to enable or disable Timer_B interrupt//! \n Valid values are://! - \b TIMER_B_TBIE_INTERRUPT_ENABLE//! - \b TIMER_B_TBIE_INTERRUPT_DISABLE [Default]uint16_t timerInterruptEnable_TBIE;//! Decides if Timer_B clock divider, count direction, count need to be//! reset.//! \n Valid values are://! - \b TIMER_B_DO_CLEAR//! - \b TIMER_B_SKIP_CLEAR [Default]uint16_t timerClear;//! Whether to start the timer immediatelybool startTimer;
} Timer_B_initContinuousModeParam;

Timer_B_initCaptureModeParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_initCaptureMode() function as the param
//! parameter.
//
//*****************************************************************************
typedef struct Timer_B_initCaptureModeParam {//! Selects the capture register being used. Refer to datasheet to ensure//! the device has the capture register being used.//! \n Valid values are://! - \b TIMER_B_CAPTURECOMPARE_REGISTER_0//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_1//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_2//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_3//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_4//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_5//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_6uint16_t captureRegister;//! Is the capture mode selected.//! \n Valid values are://! - \b TIMER_B_CAPTUREMODE_NO_CAPTURE [Default]//! - \b TIMER_B_CAPTUREMODE_RISING_EDGE//! - \b TIMER_B_CAPTUREMODE_FALLING_EDGE//! - \b TIMER_B_CAPTUREMODE_RISING_AND_FALLING_EDGEuint16_t captureMode;//! Decides the Input Select//! \n Valid values are://! - \b TIMER_B_CAPTURE_INPUTSELECT_CCIxA [Default]//! - \b TIMER_B_CAPTURE_INPUTSELECT_CCIxB//! - \b TIMER_B_CAPTURE_INPUTSELECT_GND//! - \b TIMER_B_CAPTURE_INPUTSELECT_Vccuint16_t captureInputSelect;//! Decides if capture source should be synchronized with Timer_B clock//! \n Valid values are://! - \b TIMER_B_CAPTURE_ASYNCHRONOUS [Default]//! - \b TIMER_B_CAPTURE_SYNCHRONOUSuint16_t synchronizeCaptureSource;//! Is to enable or disable Timer_B capture compare interrupt.//! \n Valid values are://! - \b TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE [Default]//! - \b TIMER_B_CAPTURECOMPARE_INTERRUPT_ENABLEuint16_t captureInterruptEnable;//! Specifies the output mode.//! \n Valid values are://! - \b TIMER_B_OUTPUTMODE_OUTBITVALUE [Default]//! - \b TIMER_B_OUTPUTMODE_SET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_RESET//! - \b TIMER_B_OUTPUTMODE_SET_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE//! - \b TIMER_B_OUTPUTMODE_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_SET//! - \b TIMER_B_OUTPUTMODE_RESET_SETuint16_t captureOutputMode;
} Timer_B_initCaptureModeParam;

Timer_B_initCompareModeParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_initCompareMode() function as the param
//! parameter.
//
//*****************************************************************************
typedef struct Timer_B_initCompareModeParam {//! Selects the compare register being used. Refer to datasheet to ensure//! the device has the compare register being used.//! \n Valid values are://! - \b TIMER_B_CAPTURECOMPARE_REGISTER_0//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_1//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_2//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_3//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_4//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_5//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_6uint16_t compareRegister;//! Is to enable or disable Timer_B capture compare interrupt.//! \n Valid values are://! - \b TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE [Default]//! - \b TIMER_B_CAPTURECOMPARE_INTERRUPT_ENABLEuint16_t compareInterruptEnable;//! Specifies the output mode.//! \n Valid values are://! - \b TIMER_B_OUTPUTMODE_OUTBITVALUE [Default]//! - \b TIMER_B_OUTPUTMODE_SET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_RESET//! - \b TIMER_B_OUTPUTMODE_SET_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE//! - \b TIMER_B_OUTPUTMODE_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_SET//! - \b TIMER_B_OUTPUTMODE_RESET_SETuint16_t compareOutputMode;//! Is the count to be compared with in compare modeuint16_t compareValue;
} Timer_B_initCompareModeParam;

compareRegister

/*
selects the compare register being used. Refer to datasheet to
ensure the device has the compare register being used. Valid
values are:
*/
TIMER_B_CAPTURECOMPARE_REGISTER_0
TIMER_B_CAPTURECOMPARE_REGISTER_1
TIMER_B_CAPTURECOMPARE_REGISTER_2
TIMER_B_CAPTURECOMPARE_REGISTER_3
TIMER_B_CAPTURECOMPARE_REGISTER_4
TIMER_B_CAPTURECOMPARE_REGISTER_5
TIMER_B_CAPTURECOMPARE_REGISTER_6

compareLatchLoadEvent

/*
selects the latch load event Valid values are:
*/
TIMER_B_LATCH_ON_WRITE_TO_TBxCCRn_COMPARE_REGISTER      //[Default]
TIMER_B_LATCH_WHEN_COUNTER_COUNTS_TO_0_IN_UP_OR_CONT_MODE
TIMER_B_LATCH_WHEN_COUNTER_COUNTS_TO_0_IN_UPDOWN_MODE
TIMER_B_LATCH_WHEN_COUNTER_COUNTS_TO_CURRENT_COMPARE_LATCH_VALUE

groupLatch

//selects the latching group. Valid values are:
TIMER_B_GROUP_NONE      //[Default]
TIMER_B_GROUP_CL12_CL23_CL56
TIMER_B_GROUP_CL123_CL456
TIMER_B_GROUP_ALL

counterLength

//selects the value of counter length. Valid values are:
TIMER_B_COUNTER_16BIT   //[Default]
TIMER_B_COUNTER_12BIT
TIMER_B_COUNTER_10BIT
TIMER_B_COUNTER_8BIT

处理计时器输出的函数

Timer_B_getSynchronizedCaptureCompareInput(uint16_t baseAddress, uint16_t captureCompareRegister, uint16_t synchronized)
//获取同步的capturecompare输入
Timer_B_getOutputForOutputModeOutBitValue(uint16_t baseAddress, uint16_t captureCompareRegister)
//为输出模式获取输出位
Timer_B_setOutputForOutputModeOutBitValue(uint16_t baseAddress, uint16_t captureCompareRegister, uint16_t outputModeOutBitValue)
//为输出模式设置输出位
Timer_B_outputPWM(uint16_t baseAddress, Timer_B_outputPWMParam ∗param)
//通过增计数模式产生PWM信号
Timer_B_getCaptureCompareCount(uint16_t baseAddress, uint16_t captureCompareRegister)
//获取当前capturecompare计数
Timer_B_setCompareValue(uint16_t baseAddress, uint16_t compareRegister, uint16_t compareValue)
//设置捕获比较寄存器的值
Timer_B_getCounterValue(uint16_t baseAddress)
//读取当前计时器计数值

参数

baseAddress

TIMER_B0_BASE

captureCompareRegister

/*
selects the capture compare register being used. Refer to
datasheet to ensure the device has the capture compare register
being used. Valid values are:
*/
TIMER_B_CAPTURECOMPARE_REGISTER_0
TIMER_B_CAPTURECOMPARE_REGISTER_1
TIMER_B_CAPTURECOMPARE_REGISTER_2
TIMER_B_CAPTURECOMPARE_REGISTER_3
TIMER_B_CAPTURECOMPARE_REGISTER_4
TIMER_B_CAPTURECOMPARE_REGISTER_5
TIMER_B_CAPTURECOMPARE_REGISTER_6

synchronized

//selects the type of capture compare input Valid values are:
TIMER_B_READ_SYNCHRONIZED_CAPTURECOMPAREINPUT
TIMER_B_READ_CAPTURE_COMPARE_INPUT

outputModeOutBitValue

//the value to be set for out bit Valid values are:
TIMER_B_OUTPUTMODE_OUTBITVALUE_HIGH
TIMER_B_OUTPUTMODE_OUTBITVALUE_LOW

Timer_B_outputPWMParam

//*****************************************************************************
//
//! \brief Used in the Timer_B_outputPWM() function as the param parameter.
//
//*****************************************************************************
typedef struct Timer_B_outputPWMParam {//! Selects the clock source//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_EXTERNAL_TXCLK [Default]//! - \b TIMER_B_CLOCKSOURCE_ACLK//! - \b TIMER_B_CLOCKSOURCE_SMCLK//! - \b TIMER_B_CLOCKSOURCE_INVERTED_EXTERNAL_TXCLKuint16_t clockSource;//! Is the divider for Clock source.//! \n Valid values are://! - \b TIMER_B_CLOCKSOURCE_DIVIDER_1 [Default]//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_2//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_3//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_4//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_5//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_6//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_7//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_8//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_10//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_12//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_14//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_16//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_20//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_24//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_28//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_32//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_40//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_48//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_56//! - \b TIMER_B_CLOCKSOURCE_DIVIDER_64uint16_t clockSourceDivider;//! Selects the desired Timer_B perioduint16_t timerPeriod;//! Selects the compare register being used. Refer to datasheet to ensure//! the device has the compare register being used.//! \n Valid values are://! - \b TIMER_B_CAPTURECOMPARE_REGISTER_0//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_1//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_2//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_3//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_4//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_5//! - \b TIMER_B_CAPTURECOMPARE_REGISTER_6uint16_t compareRegister;//! Specifies the output mode.//! \n Valid values are://! - \b TIMER_B_OUTPUTMODE_OUTBITVALUE [Default]//! - \b TIMER_B_OUTPUTMODE_SET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_RESET//! - \b TIMER_B_OUTPUTMODE_SET_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE//! - \b TIMER_B_OUTPUTMODE_RESET//! - \b TIMER_B_OUTPUTMODE_TOGGLE_SET//! - \b TIMER_B_OUTPUTMODE_RESET_SETuint16_t compareOutputMode;//! Specifies the dutycycle for the generated waveformuint16_t dutyCycle;
} Timer_B_outputPWMParam;

compareRegister

//selects the compare register being used. Refer to datasheet to ensure the device has the compare register being used. Valid values are:
TIMER_B_CAPTURECOMPARE_REGISTER_0
TIMER_B_CAPTURECOMPARE_REGISTER_1
TIMER_B_CAPTURECOMPARE_REGISTER_2
TIMER_B_CAPTURECOMPARE_REGISTER_3
TIMER_B_CAPTURECOMPARE_REGISTER_4
TIMER_B_CAPTURECOMPARE_REGISTER_5
TIMER_B_CAPTURECOMPARE_REGISTER_6

compareValue
比较模式下需要比较的计数值

管理定时器B中断的函数

Timer_B_enableInterrupt(uint16_t baseAddress)
//使能定时器B中断
Timer_B_disableInterrupt(uint16_t baseAddress)
//禁用定时器B中断
Timer_B_getInterruptStatus(uint16_t baseAddress)
//获取定时器B中断状态
Timer_B_enableCaptureCompareInterrupt(uint16_t baseAddress, uint16_t captureCompareRegister)
//启用捕获比较中断
Timer_B_disableCaptureCompareInterrupt(uint16_t baseAddress, uint16_t captureCompareRegister)
//禁用捕获比较中断
Timer_B_getCaptureCompareInterruptStatus(uint16_t baseAddress, uint16_t captureCompareRegister, uint16_t mask)
//清除捕获比较中断标志
Timer_B_clearCaptureCompareInterrupt(uint16_t baseAddress, uint16_t captureCompareRegister)
//清除捕获比较中断标志
Timer_B_clearTimerInterrupt(uint16_t baseAddress)
//清除Timer_ B TBIFG中断标志。

参数

baseAddress

TIMER_B0_BASE

captureCompareRegister

/*
selects the capture compare register being used. Refer to
datasheet to ensure the device has the capture compare register
being used. Valid values are:
*/
TIMER_B_CAPTURECOMPARE_REGISTER_0
TIMER_B_CAPTURECOMPARE_REGISTER_1
TIMER_B_CAPTURECOMPARE_REGISTER_2
TIMER_B_CAPTURECOMPARE_REGISTER_3
TIMER_B_CAPTURECOMPARE_REGISTER_4
TIMER_B_CAPTURECOMPARE_REGISTER_5
TIMER_B_CAPTURECOMPARE_REGISTER_6

mask

/*
is the mask for the interrupt status Mask value is the logical OR of
any of the following:
*/
TIMER_B_CAPTURE_OVERFLOW
TIMER_B_CAPTURECOMPARE_INTERRUPT_FLAG

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MSP430F5529 DriverLib 库函数学习笔记（七）定时器B

目录

硬知识

Timer_B特点及结构

Timer_B寄存器

定时器B API

处理计时器配置和控制的函数

参数

处理计时器输出的函数

参数

管理定时器B中断的函数

参数

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