MSP430寄存器中文注释---P1/2口（带中断功能）
/************************************************************
* DIGITAL I/O Port1/2 寄存器定义 有中断功能
************************************************************/
#define P1IN_ 0x0020 /* P1 输入寄存器 */
const sfrb P1IN = P1IN_;
#define P1OUT_ 0x0021 /* P1 输出寄存器 */
sfrb P1OUT = P1OUT_;
#define P1DIR_ 0x0022 /* P1 方向选择寄存器 */
sfrb P1DIR = P1DIR_;
#define P1IFG_ 0x0023 /* P1 中断标志寄存器*/
sfrb P1IFG = P1IFG_;
#define P1IES_ 0x0024 /* P1 中断边沿选择寄存器*/
sfrb P1IES = P1IES_;
#define P1IE_ 0x0025 /* P1 中断使能寄存器 */
sfrb P1IE = P1IE_;
#define P1SEL_ 0x0026 /* P1 功能选择寄存器*/
sfrb P1SEL = P1SEL_;
#define P2IN_ 0x0028 /* P2 输入寄存器 */
const sfrb P2IN = P2IN_;
#define P2OUT_ 0x0029 /* P2 输出寄存器 */
sfrb P2OUT = P2OUT_;
#define P2DIR_ 0x002A /* P2 方向选择寄存器 */
sfrb P2DIR = P2DIR_;
#define P2IFG_ 0x002B /* P2 中断标志寄存器 */
sfrb P2IFG = P2IFG_;
#define P2IES_ 0x002C /* P2 中断边沿选择寄存器 */
sfrb P2IES = P2IES_;
#define P2IE_ 0x002D /* P2 中断使能寄存器 */
sfrb P2IE = P2IE_;
#define P2SEL_ 0x002E /* P2 功能选择寄存器 */
sfrb P2SEL = P2SEL_;
MSP430寄存器中文注释---P3/4口 （无中断功能）
/************************************************************
* DIGITAL I/O Port3/4寄存器定义 无中断功能
************************************************************/
#define P3IN_ 0x0018 /* P3 输入寄存器 */
const sfrb P3IN = P3IN_;
#define P3OUT_ 0x0019 /* P3 输出寄存器 */
sfrb P3OUT = P3OUT_;
#define P3DIR_ 0x001A /* P3 方向选择寄存器 */
sfrb P3DIR = P3DIR_;
#define P3SEL_ 0x001B /* P3 功能选择寄存器*/
sfrb P3SEL = P3SEL_;
#define P4IN_ 0x001C /* P4 输入寄存器 */
const sfrb P4IN = P4IN_;
#define P4OUT_ 0x001D /* P4 输出寄存器 */
sfrb P4OUT = P4OUT_;
#define P4DIR_ 0x001E /* P4 方向选择寄存器 */
sfrb P4DIR = P4DIR_;
#define P4SEL_ 0x001F /* P4 功能选择寄存器 */
sfrb P4SEL = P4SEL_;
/************************************************************
* DIGITAL I/O Port5/6 I/O口寄存器定义PORT5和6 无中断功能
************************************************************/
#define P5IN_ 0x0030 /* P5 输入寄存器 */
const sfrb P5IN = P5IN_;
#define P5OUT_ 0x0031 /* P5 输出寄存器*/
sfrb P5OUT = P5OUT_;
#define P5DIR_ 0x0032 /* P5 方向选择寄存器*/
sfrb P5DIR = P5DIR_;
#define P5SEL_ 0x0033 /* P5 功能选择寄存器*/
sfrb P5SEL = P5SEL_;
#define P6IN_ 0x0034 /* P6 输入寄存器 */
const sfrb P6IN = P6IN_;
#define P6OUT_ 0x0035 /* P6 输出寄存器*/
sfrb P6OUT = P6OUT_;
#define P6DIR_ 0x0036 /* P6 方向选择寄存器*/
sfrb P6DIR = P6DIR_;
#define P6SEL_ 0x0037 /* P6 功能选择寄存器*/
sfrb P6SEL = P6SEL_;
MSP430寄存器中文注释--- 硬件乘法器
/************************************************************
硬件乘法器的寄存器定义
************************************************************/
#define MPY_ 0x0130 /* 无符号乘法 */
sfrw MPY = MPY_;
#define MPYS_ 0x0132 /* 有符号乘法*/
sfrw MPYS = MPYS_;
#define MAC_ 0x0134 /* 无符号乘加 */
sfrw MAC = MAC_;
#define MACS_ 0x0136 /* 有符号乘加 */
sfrw MACS = MACS_;
#define OP2_ 0x0138 /* 第二乘数 */
sfrw OP2 = OP2_;
#define RESLO_ 0x013A /* 低6位结果寄存器 */
sfrw RESLO = RESLO_;
#define RESHI_ 0x013C /* 高6位结果寄存器 */
sfrw RESHI = RESHI_;
#define SUMEXT_ 0x013E /*结果扩展寄存器 */
const sfrw SUMEXT = SUMEXT_;
MSP430寄存器中文注释---看门狗和定时器
/************************************************************
* 看门狗定时器的寄存器定义
************************************************************/
#define WDTCTL_ 0x0120
sfrw WDTCTL = WDTCTL_;
#define WDTIS0 0x0001 /*选择WDTCNT的四个输出端之一*/
#define WDTIS1 0x0002 /*选择WDTCNT的四个输出端之一*/
#define WDTSSEL 0x0004 /*选择WDTCNT的时钟源*/
#define WDTCNTCL 0x0008 /*清除WDTCNT端: 为1时 从0开始计数*/
#define WDTTMSEL 0x0010 /*选择模式 0: 看门狗模式; 1: 定时器模式*/
#define WDTNMI 0x0020 /*选择NMI/RST 引脚功能 0:为 RST;
1:为NMI*/
#define WDTNMIES 0x0040 /*WDTNMI=1时.选择触发延 0:为上升延
1:为下降延*/
#define WDTHOLD 0x0080 /*停止看门狗定时器工作 0:启动;1:停止*/
#define WDTPW 0x5A00 /* 写密码:高八位*/
/* SMCLK= 1MHz定时器模式 */
#define WDT_MDLY_32 WDTPW+WDTTMSEL+WDTCNTCL
/* TSMCLK*2POWER15=32ms 复位状态 */
#define WDT_MDLY_8 WDTPW+WDTTMSEL+WDTCNTCL+WDTIS0
/* TSMCLK*2POWER13=8.192ms " */
#define WDT_MDLY_0_5 WDTPW+WDTTMSEL+WDTCNTCL+WDTIS1
/* TSMCLK*2POWER9=0.512ms " */
#define WDT_MDLY_0_064 WDTPW+WDTTMSEL+WDTCNTCL+WDTIS1+WDTIS0
/* TSMCLK*2POWER6=0.512ms " */
/* ACLK=32.768KHz 定时器模式*/
#define WDT_ADLY_1000 WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL
/* TACLK*2POWER15=1000ms " */
#define WDT_ADLY_250 WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS0
/* TACLK*2POWER13=250ms " */
#define WDT_ADLY_16 WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS1
/* TACLK*2POWER9=16ms " */
#define WDT_ADLY_1_9 WDTPW+WDTTMSEL+WDTCNTCL+WDTSSEL+WDTIS1+WDTIS0
/* TACLK*2POWER6=1.9ms " */
/* SMCLK=1MHz看门狗模式 */
#define WDT_MRST_32 WDTPW+WDTCNTCL
/* TSMCLK*2POWER15=32ms 复位状态 */
#define WDT_MRST_8 WDTPW+WDTCNTCL+WDTIS0
/* TSMCLK*2POWER13=8.192ms " */
#define WDT_MRST_0_5 WDTPW+WDTCNTCL+WDTIS1
/* TSMCLK*2POWER9=0.512ms " */
#define WDT_MRST_0_064 WDTPW+WDTCNTCL+WDTIS1+WDTIS0
/* TSMCLK*2POWER6=0.512ms " */
/* ACLK=32KHz看门狗模式 */
#define WDT_ARST_1000 WDTPW+WDTCNTCL+WDTSSEL
/* TACLK*2POWER15=1000ms " */
#define WDT_ARST_250 WDTPW+WDTCNTCL+WDTSSEL+WDTIS0
/* TACLK*2POWER13=250ms " */
#define WDT_ARST_16 WDTPW+WDTCNTCL+WDTSSEL+WDTIS1
/* TACLK*2POWER9=16ms " */
#define WDT_ARST_1_9 WDTPW+WDTCNTCL+WDTSSEL+WDTIS1+WDTIS0
/* TACLK*2POWER6=1.9ms " */
MSP430寄存器中文注释---A/D采样寄存器定义
/************************************************************
* ADC12 A/D采样寄存器定义
************************************************************/
/*ADC12转换控制类寄存器*/
#define ADC12CTL0_ 0x0;' /* ADC12 Control 0 */
sfrw ADC12CTL0 = ADC12CTL0_;
#define ADC12CTL1_ 0x01A2 /* ADC12 Control 1 */
sfrw ADC12CTL1 = ADC12CTL1_;
/*ADC12中断控制类寄存器*/
#define ADC12IFG_ 0x01A4 /* ADC12 Interrupt Flag */
sfrw ADC12IFG = ADC12IFG_;
#define ADC12IE_ 0x01A6 /* ADC12 Interrupt Enable */
sfrw ADC12IE = ADC12IE_;
#define ADC12IV_ 0x01A8 /* ADC12 Interrupt Vector Word */
sfrw ADC12IV = ADC12IV_;
/*ADC12存贮器类寄存器*/
#define ADC12MEM_ 0x0140 /* ADC12 Conversion Memory */
#ifndef __IAR_SYSTEMS_ICC
#define ADC12MEM ADC12MEM_ /* ADC12 Conversion Memory (for
assembler) */
#else
#define ADC12MEM ((int*) ADC12MEM_) /* ADC12 Conversion Memory
(for C) */
#endif
#define ADC12MEM0_ ADC12MEM_ /* ADC12 Conversion Memory 0 */
sfrw ADC12MEM0 = ADC12MEM0_;
#define ADC12MEM1_ 0x0142 /* ADC12 Conversion Memory 1 */
sfrw ADC12MEM1 = ADC12MEM1_;
#define ADC12MEM2_ 0x0144 /* ADC12 Conversion Memory 2 */
sfrw ADC12MEM2 = ADC12MEM2_;
#define ADC12MEM3_ 0x0146 /* ADC12 Conversion Memory 3 */
sfrw ADC12MEM3 = ADC12MEM3_;
#define ADC12MEM4_ 0x0148 /* ADC12 Conversion Memory 4 */
sfrw ADC12MEM4 = ADC12MEM4_;
#define ADC12MEM5_ 0x014A /* ADC12 Conversion Memory 5 */
sfrw ADC12MEM5 = ADC12MEM5_;
#define ADC12MEM6_ 0x014C /* ADC12 Conversion Memory 6 */
sfrw ADC12MEM6 = ADC12MEM6_;
#define ADC12MEM7_ 0x014E /* ADC12 Conversion Memory 7 */
sfrw ADC12MEM7 = ADC12MEM7_;
#define ADC12MEM8_ 0x0150 /* ADC12 Conversion Memory 8 */
sfrw ADC12MEM8 = ADC12MEM8_;
#define ADC12MEM9_ 0x0152 /* ADC12 Conversion Memory 9 */
sfrw ADC12MEM9 = ADC12MEM9_;
#define ADC12MEM10_ 0x0154 /* ADC12 Conversion Memory 10 */
sfrw ADC12MEM10 = ADC12MEM10_;
#define ADC12MEM11_ 0x0156 /* ADC12 Conversion Memory 11 */
sfrw ADC12MEM11 = ADC12MEM11_;
#define ADC12MEM12_ 0x0158 /* ADC12 Conversion Memory 12 */
sfrw ADC12MEM12 = ADC12MEM12_;
#define ADC12MEM13_ 0x015A /* ADC12 Conversion Memory 13 */
sfrw ADC12MEM13 = ADC12MEM13_;
#define ADC12MEM14_ 0x015C /* ADC12 Conversion Memory 14 */
sfrw ADC12MEM14 = ADC12MEM14_;
#define ADC12MEM15_ 0x015E /* ADC12 Conversion Memory 15 */
sfrw ADC12MEM15 = ADC12MEM15_;
/*ADC12存贮控制类寄存器*/
#define ADC12MCTL_ 0x0080 /* ADC12 Memory Control */
#ifndef __IAR_SYSTEMS_ICC
#define ADC12MCTL ADC12MCTL_ /* ADC12 Memory Control (for
assembler) */
#else
#define ADC12MCTL ((char*) ADC12MCTL_) /* ADC12 Memory Control
(for C) */
#endif
#define ADC12MCTL0_ ADC12MCTL_ /* ADC12 Memory Control 0 */
sfrb ADC12MCTL0 = ADC12MCTL0_;
#define ADC12MCTL1_ 0x0081 /* ADC12 Memory Control 1 */
sfrb ADC12MCTL1 = ADC12MCTL1_;
#define ADC12MCTL2_ 0x0082 /* ADC12 Memory Control 2 */
sfrb ADC12MCTL2 = ADC12MCTL2_;
#define ADC12MCTL3_ 0x0083 /* ADC12 Memory Control 3 */
sfrb ADC12MCTL3 = ADC12MCTL3_;
#define ADC12MCTL4_ 0x0084 /* ADC12 Memory Control 4 */
sfrb ADC12MCTL4 = ADC12MCTL4_;
#define ADC12MCTL5_ 0x0085 /* ADC12 Memory Control 5 */
sfrb ADC12MCTL5 = ADC12MCTL5_;
#define ADC12MCTL6_ 0x0086 /* ADC12 Memory Control 6 */
sfrb ADC12MCTL6 = ADC12MCTL6_;
#define ADC12MCTL7_ 0x0087 /* ADC12 Memory Control 7 */
sfrb ADC12MCTL7 = ADC12MCTL7_;
#define ADC12MCTL8_ 0x0088 /* ADC12 Memory Control 8 */
sfrb ADC12MCTL8 = ADC12MCTL8_;
#define ADC12MCTL9_ 0x0089 /* ADC12 Memory Control 9 */
sfrb ADC12MCTL9 = ADC12MCTL9_;
#define ADC12MCTL10_ 0x008A /* ADC12 Memory Control 10 */
sfrb ADC12MCTL10 = ADC12MCTL10_;
#define ADC12MCTL11_ 0x008B /* ADC12 Memory Control 11 */
sfrb ADC12MCTL11 = ADC12MCTL11_;
#define ADC12MCTL12_ 0x008C /* ADC12 Memory Control 12 */
sfrb ADC12MCTL12 = ADC12MCTL12_;
#define ADC12MCTL13_ 0x008D /* ADC12 Memory Control 13 */
sfrb ADC12MCTL13 = ADC12MCTL13_;
#define ADC12MCTL14_ 0x008E /* ADC12 Memory Control 14 */
sfrb ADC12MCTL14 = ADC12MCTL14_;
#define ADC12MCTL15_ 0x008F /* ADC12 Memory Control 15 */
sfrb ADC12MCTL15 = ADC12MCTL15_;
/* ADC12CTL0 内8位控制寄存器位*/
#define ADC12SC 0x001 /*采样/转换控制位*/
#define ENC 0x002 /* 转换允许位*/
#define ADC12TOVIE 0x004 /*转换时间溢出中断允许位*/
#define ADC12OVIE 0x008 /*溢出中断允许位*/
#define ADC12ON 0x010 /*ADC12内核控制位*/
#define REFON 0x020 /*参考电压控制位*/
#define REF2_5V 0x040 /*内部参考电压的电压值选择位 '0'为1.5V;
'1'为2.5V*/
#define MSH 0x080 /*多次采样/转换位*/
#define MSC 0x080 /*多次采样/转换位*/
/*SHT0 采样保持定时器0 控制ADC12的结果存贮器MEM0~MEM7的采样周期*/
#define SHT0_0 0*0x100 /*采样周期=TADC12CLK*4 */
#define SHT0_1 1*0x100 /*采样周期=TADC12CLK*8 */
#define SHT0_2 2*0x100 /*采样周期=TADC12CLK*16 */
#define SHT0_3 3*0x100 /*采样周期=TADC12CLK*32 */
#define SHT0_4 4*0x100 /*采样周期=TADC12CLK*64 */
#define SHT0_5 5*0x100 /*采样周期=TADC12CLK*96 */
#define SHT0_6 6*0x100 /*采样周期=TADC12CLK*128 */
#define SHT0_7 7*0x100 /*采样周期=TADC12CLK*192 */
#define SHT0_8 8*0x100 /*采样周期=TADC12CLK*256 */
#define SHT0_9 9*0x100 /*采样周期=TADC12CLK*384 */
#define SHT0_10 10*0x100 /*采样周期=TADC12CLK*512 */
#define SHT0_11 11*0x100 /*采样周期=TADC12CLK*768 */
#define SHT0_12 12*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT0_13 13*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT0_14 14*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT0_15 15*0x100 /*采样周期=TADC12CLK*1024 */
/*SHT1 采样保持定时器1 控制ADC12的结果存贮器MEM8~MEM15的采样周期*/
#define SHT1_0 0*0x100 /*采样周期=TADC12CLK*4 */
#define SHT1_1 1*0x100 /*采样周期=TADC12CLK*8 */
#define SHT1_2 2*0x100 /*采样周期=TADC12CLK*16 */
#define SHT1_3 3*0x100 /*采样周期=TADC12CLK*32 */
#define SHT1_4 4*0x100 /*采样周期=TADC12CLK*64 */
#define SHT1_5 5*0x100 /*采样周期=TADC12CLK*96 */
#define SHT1_6 6*0x100 /*采样周期=TADC12CLK*128 */
#define SHT1_7 7*0x100 /*采样周期=TADC12CLK*192 */
#define SHT1_8 8*0x100 /*采样周期=TADC12CLK*256 */
#define SHT1_9 9*0x100 /*采样周期=TADC12CLK*384 */
#define SHT1_10 10*0x100 /*采样周期=TADC12CLK*512 */
#define SHT1_11 11*0x100 /*采样周期=TADC12CLK*768 */
#define SHT1_12 12*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT1_13 13*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT1_14 14*0x100 /*采样周期=TADC12CLK*1024 */
#define SHT1_15 15*0x100 /*采样周期=TADC12CLK*1024 */
/* ADC12CTL1 内8位控制寄存器位*/
#define ADC12BUSY 0x0001 /*ADC12忙标志位*/
#define CONSEQ_0 0*2 /*单通道单次转换*/
#define CONSEQ_1 1*2 /*序列通道单次转换*/
#define CONSEQ_2 2*2 /*单通道多次转换*/
#define CONSEQ_3 3*2 /*序列通道多次转换*/
#define ADC12SSEL_0 0*8 /*ADC12内部时钟源*/
#define ADC12SSEL_1 1*8 /*ACLK*/
#define ADC12SSEL_2 2*8 /*MCLK*/
#define ADC12SSEL_3 3*8 /*SCLK*/
#define ADC12DIV_0 0*0x20 /*1分频*/
#define ADC12DIV_1 1*0x20 /*2分频*/
#define ADC12DIV_2 2*0x20 /*3分频*/
#define ADC12DIV_3 3*0x20 /*4分频*/
#define ADC12DIV_4 4*0x20 /*5分频*/
#define ADC12DIV_5 5*0x20 /*6分频*/
#define ADC12DIV_6 6*0x20 /*7分频*/
#define ADC12DIV_7 7*0x20 /*8分频*/
#define ISSH 0x0100 /*采样输入信号反向与否控制位*/
#define SHP 0x0200 /*采样信号(SAMPCON)选择控制位*/
#define SHS_0 0*0x400 /*采样信号输入源选择控制位 ADC12SC*/
#define SHS_1 1*0x400 /*采样信号输入源选择控制位 TIMER_A.OUT1*/
#define SHS_2 2*0x400 /*采样信号输入源选择控制位 TIMER_B.OUT0*/
#define SHS_3 3*0x400 /*采样信号输入源选择控制位 TIMER_B.OUT1*/
/*转换存贮器地址定义位*/
#define CSTARTADD_0 0*0x1000 /*选择MEM0首地址*/
#define CSTARTADD_1 1*0x1000 /*选择MEM1首地址*/
#define CSTARTADD_2 2*0x1000 /*选择MEM2首地址*/
#define CSTARTADD_3 3*0x1000 /*选择MEM3首地址*/
#define CSTARTADD_4 4*0x1000 /*选择MEM4首地址*/
#define CSTARTADD_5 5*0x1000 /*选择MEM5首地址*/
#define CSTARTADD_6 6*0x1000 /*选择MEM6首地址*/
#define CSTARTADD_7 7*0x1000 /*选择MEM7首地址*/
#define CSTARTADD_8 8*0x1000 /*选择MEM8首地址*/
#define CSTARTADD_9 9*0x1000 /*选择MEM9首地址*/
#define CSTARTADD_10 10*0x1000 /*选择MEM10首地址*/
#define CSTARTADD_11 11*0x1000 /*选择MEM11首地址*/
#define CSTARTADD_12 12*0x1000 /*选择MEM12首地址*/
#define CSTARTADD_13 13*0x1000 /*选择MEM13首地址*/
#define CSTARTADD_14 14*0x1000 /*选择MEM14首地址*/
#define CSTARTADD_15 15*0x1000 /*选择MEM15首地址*/
/* ADC12MCTLx */
#define INCH_0 0 /*选择模拟量通道0 A0 */
#define INCH_1 1 /*选择模拟量通道0 A1*/
#define INCH_2 2 /*选择模拟量通道0 A2*/
#define INCH_3 3 /*选择模拟量通道0 A3*/
#define INCH_4 4 /*选择模拟量通道0 A4*/
#define INCH_5 5 /*选择模拟量通道0 A5*/
#define INCH_6 6 /*选择模拟量通道0 A6*/
#define INCH_7 7 /*选择模拟量通道0 A7*/
#define INCH_8 8 /*VEREF+*/
#define INCH_9 9 /*VEREF-*/
#define INCH_10 10 /*片内温度传感器的输出*/
#define INCH_11 11 /*(AVCC-AVSS)/2*/
#define INCH_12 12 /*(AVCC-AVSS)/2*/
#define INCH_13 13 /*(AVCC-AVSS)/2*/
#define INCH_14 14 /*(AVCC-AVSS)/2*/
#define INCH_15 15 /*(AVCC-AVSS)/2*/
/*参考电压源选择位*/
#define SREF_0 0*0x10 /*VR+ = AVCC; VR- = AVSS*/
#define SREF_1 1*0x10 /*VR+ = VREF+; VR- = AVSS*/
#define SREF_2 2*0x10 /*VR+ = VEREF+; VR- = AVSS*/
#define SREF_3 3*0x10 /*VR+ = VEREF+; VR- = AVSS*/
#define SREF_4 4*0x10 /*VR+ = AVCC; VR- = VREF-*/
#define SREF_5 5*0x10 /*VR+ = VREF+; VR- = VREF-*/
#define SREF_6 6*0x10 /*VR+ = VEREF+; VR- =
VREF-*/
#define SREF_7 7*0x10 /*VR+ = VEREF+; VR- =
VREF-*/
#define EOS 0x80 /*序列结束选择位*/
MSP430寄存器中文注释----串口寄存器
/************************************************************
* USART 串口寄存器"UCTL","UTCTL","URCTL"定义的各个位可串口1 串口2公用
************************************************************/
/* UCTL 串口控制寄存器*/
#define PENA 0x80 /*校验允许位*/
#define PEV 0x40 /*偶校验 为0时为奇校验*/
#define SPB 0x20 /*停止位为2 为0时停止位为1*/
#define CHAR 0x10 /*数据位为8位为0时数据位为7位*/
#define LISTEN 0x08 /*自环模式(发数据同时在把发的数据接收回来)*/
#define SYNC 0x04 /*同步模式 为0异步模式*/
#define MM 0x02 /*为1时地址位多机协议(异步)
主机模式(同步);为0时线路空闲多机协议(异步) 从机模式(同步)*/
#define SWRST 0x01 /*控制位*/
/* UTCTL 串口发送控制寄存器*/
#define CKPH 0x80 /*时钟相位控制位(只同步方式用)为1时时钟UCLK延时半个周期*/
#define CKPL 0x40 /*时钟极性控制位 为1时异步与UCLK相反;同步下降延有效*/
#define SSEL1 0x20 /*时钟源选择位:与SSEL0组合为0,1,2,3四种方式*/
#define SSEL0 0x10
/*"0"选择外部时钟,"1"选择辅助时钟,"2","3"选择系统子时钟 */
#define URXSE 0x08 /*接收触发延控制位(只在异步方式下用)*/
#define TXWAKE 0x04 /*多处理器通信传送控制位(只在异步方式下用)*/
#define STC 0x02 /*外部引脚STE选择位为0时为4线模式 为1时为3线模式*/
#define TXEPT 0x01 /*发送器空标志*/
/* URCTL 串口接收控制寄存器 同步模式下只用两位:FE和OE*/
#define FE 0x80 /*帧错标志*/
#define PE 0x40 /*校验错标志位*/
#define OE 0x20 /*溢出标志位*/
#define BRK 0x10 /*打断检测位*/
#define URXEIE 0x08 /*接收出错中断允许位*/
#define URXWIE 0x04 /*接收唤醒中断允许位*/
#define RXWAKE 0x02 /*接收唤醒检测位*/
#define RXERR 0x01 /*接收错误标志位*/
/************************************************************
* USART 0 串口0寄存器定义
************************************************************/
#define U0CTL_ 0x0070 /* UART 0 Control */
sfrb U0CTL = U0CTL_;
#define U0TCTL_ 0x0071 /* UART 0 Transmit Control */
sfrb U0TCTL = U0TCTL_;
#define U0RCTL_ 0x0072 /* UART 0 Receive Control */
sfrb U0RCTL = U0RCTL_;
#define U0MCTL_ 0x0073 /* UART 0 Modulation Control */
sfrb U0MCTL = U0MCTL_;
#define U0BR0_ 0x0074 /* UART 0 Baud Rate 0 */
sfrb U0BR0 = U0BR0_;
#define U0BR1_ 0x0075 /* UART 0 Baud Rate 1 */
sfrb U0BR1 = U0BR1_;
#define U0RXBUF_ 0x0076 /* UART 0 Receive Buffer */
const sfrb U0RXBUF = U0RXBUF_;
#define U0TXBUF_ 0x0077 /* UART 0 Transmit Buffer */
sfrb U0TXBUF = U0TXBUF_;
/* Alternate register names */
#define UCTL0_ 0x0070 /* UART 0 Control */
sfrb UCTL0 = UCTL0_;
#define UTCTL0_ 0x0071 /* UART 0 Transmit Control */
sfrb UTCTL0 = UTCTL0_;
#define URCTL0_ 0x0072 /* UART 0 Receive Control */
sfrb URCTL0 = URCTL0_;
#define UMCTL0_ 0x0073 /* UART 0 Modulation Control */
sfrb UMCTL0 = UMCTL0_;
#define UBR00_ 0x0074 /* UART 0 Baud Rate 0 */
sfrb UBR00 = UBR00_;
#define UBR10_ 0x0075 /* UART 0 Baud Rate 1 */
sfrb UBR10 = UBR10_;
#define RXBUF0_ 0x0076 /* UART 0 Receive Buffer */
const sfrb RXBUF0 = RXBUF0_;
#define TXBUF0_ 0x0077 /* UART 0 Transmit Buffer */
sfrb TXBUF0 = TXBUF0_;
#define UCTL_0_ 0x0070 /* UART 0 Control */
sfrb UCTL_0 = UCTL_0_;
#define UTCTL_0_ 0x0071 /* UART 0 Transmit Control */
sfrb UTCTL_0 = UTCTL_0_;
#define URCTL_0_ 0x0072 /* UART 0 Receive Control */
sfrb URCTL_0 = URCTL_0_;
#define UMCTL_0_ 0x0073 /* UART 0 Modulation Control */
sfrb UMCTL_0 = UMCTL_0_;
#define UBR0_0_ 0x0074 /* UART 0 Baud Rate 0 */
sfrb UBR0_0 = UBR0_0_;
#define UBR1_0_ 0x0075 /* UART 0 Baud Rate 1 */
sfrb UBR1_0 = UBR1_0_;
#define RXBUF_0_ 0x0076 /* UART 0 Receive Buffer */
const sfrb RXBUF_0 = RXBUF_0_;
#define TXBUF_0_ 0x0077 /* UART 0 Transmit Buffer */
sfrb TXBUF_0 = TXBUF_0_;
/************************************************************
* USART 1 串口1寄存器定义
************************************************************/
#define U1CTL_ 0x0078 /* UART 1 Control */
sfrb U1CTL = U1CTL_;
#define U1TCTL_ 0x0079 /* UART 1 Transmit Control */
sfrb U1TCTL = U1TCTL_;
#define U1RCTL_ 0x007A /* UART 1 Receive Control */
sfrb U1RCTL = U1RCTL_;
#define U1MCTL_ 0x007B /* UART 1 Modulation Control */
sfrb U1MCTL = U1MCTL_;
#define U1BR0_ 0x007C /* UART 1 Baud Rate 0 */
sfrb U1BR0 = U1BR0_;
#define U1BR1_ 0x007D /* UART 1 Baud Rate 1 */
sfrb U1BR1 = U1BR1_;
#define U1RXBUF_ 0x007E /* UART 1 Receive Buffer */
const sfrb U1RXBUF = U1RXBUF_;
#define U1TXBUF_ 0x007F /* UART 1 Transmit Buffer */
sfrb U1TXBUF = U1TXBUF_;
#define UCTL1_ 0x0078 /* UART 1 Control */
sfrb UCTL1 = UCTL1_;
#define UTCTL1_ 0x0079 /* UART 1 Transmit Control */
sfrb UTCTL1 = UTCTL1_;
#define URCTL1_ 0x007A /* UART 1 Receive Control */
sfrb URCTL1 = URCTL1_;
#define UMCTL1_ 0x007B /* UART 1 Modulation Control */
sfrb UMCTL1 = UMCTL1_;
#define UBR01_ 0x007C /* UART 1 Baud Rate 0 */
sfrb UBR01 = UBR01_;
#define UBR11_ 0x007D /* UART 1 Baud Rate 1 */
sfrb UBR11 = UBR11_;
#define RXBUF1_ 0x007E /* UART 1 Receive Buffer */
const sfrb RXBUF1 = RXBUF1_;
#define TXBUF1_ 0x007F /* UART 1 Transmit Buffer */
sfrb TXBUF1 = TXBUF1_;
#define UCTL_1_ 0x0078 /* UART 1 Control */
sfrb UCTL_1 = UCTL_1_;
#define UTCTL_1_ 0x0079 /* UART 1 Transmit Control */
sfrb UTCTL_1 = UTCTL_1_;
#define URCTL_1_ 0x007A /* UART 1 Receive Control */
sfrb URCTL_1 = URCTL_1_;
#define UMCTL_1_ 0x007B /* UART 1 Modulation Control */
sfrb UMCTL_1 = UMCTL_1_;
#define UBR0_1_ 0x007C /* UART 1 Baud Rate 0 */
sfrb UBR0_1 = UBR0_1_;
#define UBR1_1_ 0x007D /* UART 1 Baud Rate 1 */
sfrb UBR1_1 = UBR1_1_;
#define RXBUF_1_ 0x007E /* UART 1 Receive Buffer */
const sfrb RXBUF_1 = RXBUF_1_;
#define TXBUF_1_ 0x007F /* UART 1 Transmit Buffer */
sfrb TXBUF_1 = TXBUF_1_;
注意七点：（1）sfrb：c430中新增的变量类型，占用一个字节，取值范围：0X00～0XFF，表示字节类型的特殊功能寄存器变量
（2）sfrw：c430中新增的变量类型，占用两个字节，取值范围：0X100～0X1FF，表示字（双字节）类型的特殊功能寄存器变量
（3）pointer：c430中新增的变量类型，占用两个字节，表示指针
特殊关键字说明：
（4）const：定义常量，这些量一旦定义就不能更改，可以定义任意类型
（5）static：定义静态变量，这种变量定义后，变量的地址是固定的，这些变量不会随着函数调用的结束而结束
（6）volatile：与static变量相反，这种变量明确告诉编译器，这类变量值随时会改变，不能对这种类型的变量优化删除任何操作过程
（7）no_init或_no_init:定义无需初始化的变量，c程序main（）函数开始运行前，会将所有RAM清零（初始化），对这种变量在此过程中不予清零处理。
在MSP430中，取消了位变量，通常采用由变量和掩膜位间的逻辑运算操作来实现位运算。
(1)例如：对p1.0口置位（置1）可以使用以下三种方法：
P1OUT |= 0X01;
P1OUT |= (1 << 0)
若已包含以上的头文件：
P1OUT |= BIT0;
(2)例如：对p1.0口复位（置0）可以使用以下三种方法：
P1OUT &= ～0X01;
P1OUT &= ～(1 << 0)
若已包含以上的头文件：
P1OUT &= ～BIT0;
(3)例如：对P1.0和P1.1口置位，对P1.2和P1.3口复位：
P1OUT |= 0X03; 或 P1OUT |= BIT0 + BIT1;
P1OUT &= ～0X06H；或 P1OUT &= ～（BIT2 + BIT3)；