freescale 单片机MC9S12G128应用程序(PWM,Timer,ADC……)

PWM应用程序/*程序实现功能：PP1口输出PWM方波程序说明：通过改变duty和period ，从而控制PWM周期和占空比duty cycle=duty/periodPWM frequency=1M/(2*period)(Fbus=24M,scla=24)*/#include <hidef.h> /* common defines and macros */#include "derivative.h" /* derivative-specific definitions */void SetBusClock_24MHZ(void);void PWMDisable(byte channel);void PWMEnable(byte channel);void PWMSinglePortSetting(byte channel ,byte period ,byte duty) ;void PWMsinglePortInitial(byte channel, byte clkab,byte clock, byte polarity,byte align) ; void Service_WD(void);void PWMGeneralInitial(byte prclk,byte scla,byte sclb,byte ctl);void PWMConcatenateSetting(byte channel,word period,word duty);void main(void){/* put your own code here *///总线时钟频率设置:24MSetBusClock_24MHZ();//对预分频时钟，分频时钟A，分频时钟B和控制寄存器的配置//0分频01级联PWMGeneralInitial(0,24,0,0x10);//PWM端口寄存器的配置// 1通道SA时钟起始高电平左对齐PWMsinglePortInitial(1,0,1,1,0);//PWM级联输出配置//50HZ 占空比12.5%PWMConcatenateSetting(1,10000,250);//EnableInterrupts;for(;;) {_FEED_COP(); /* feeds the dog */} /* loop forever *//* please make sure that you never leave main */}//*********************************************//函数名：PWMEnable//函数功能：PWM单个端口使能//函数参数：一个byte 类型channel 代表PWM通道号// 返回值：无//********************************************void PWMEnable(byte channel){if(channel>7) channel=7;PWME|=(1<<channel); //选择使能位}//**********************************************//函数名称：PWMDisable//函数功能:PWM单个端口禁止//函数参数：一个byte类型channel 代表PWM通道号//返回值：无//***********************************************void PWMDisable(byte channel){if(channel>7) channel=7;PWME&=~(1<<channel); //选择禁止位}//函数功能：启动看门狗void Service_WD(void){CPMUARMCOP=0x55;CPMUARMCOP=0xAA;}//函数功能：总线时钟设置void SetBusClock_24MHZ(void){CPMUOSC_OSCE=1; //enable osc/*时钟倍频：24MHz BusClock48MHz VCO48MHz PLL*/CPMUSYNR=0x00|0x05; //VCOFRQ[1:0],SYNDIV[5:0]CPMUREFDIV=0x20|0x03;//REFFRQ[1:0],REFDIV[3:0]CPMUPOSTDIV=0x00; //POSTDIV=0;while(!CPMUFLG_LOCK)//等待VCO稳定Service_WD(); //看门狗CPMUCLKS_PLLSEL=1;}//*********************************************//函数名称：PWMSinglePortSetting//函数功能：实现PWM周期寄存器和占空比寄存器通道的单独输出//函数参数：3个byte类型//参数1：channel代表了当前配置的PWM通道//参数2：period 周期配置参数/*Left aligned output (CAEx = 0) PWMx Period = Channel Clock Period * PWMPERxCenter Aligned Output (CAEx = 1) PWMx Period = Channel Clock Period * (2 * PWMPERx)*///参数3：duty 占空比配置参数/*Polarity = 0 (PPOL x =0) Duty Cycle = [(PWMPERx-PWMDTYx)/PWMPERx] * 100%Polarity = 1 (PPOLx = 1) Duty Cycle = [PWMDTYx / PWMPERx] * 100%*///返回值：无//**********************************************void PWMSinglePortSetting(byte channel ,byte period ,byte duty){if(channel>7) channel=7;PWMDisable(channel); //禁止该通道switch(channel){case 0:PWMPER0=period; //设置周期寄存器PWMDTY0=duty; //设置占空比寄存器break;case 1:PWMPER1=period; //设置周期寄存器PWMDTY1=duty; //设置占空比寄存器case 2:PWMPER2=period; //设置周期寄存器PWMDTY2=duty; //设置占空比寄存器break;case 3:PWMPER3=period; //设置周期寄存器PWMDTY3=duty; //设置占空比寄存器break;case 4:PWMPER4=period; //设置周期寄存器PWMDTY4=duty; //设置占空比寄存器break;case 5:PWMPER5=period; //设置周期寄存器PWMDTY5=duty; //设置占空比寄存器break;case 6:PWMPER6=period; //设置周期寄存器PWMDTY6=duty; //设置占空比寄存器break;case 7:PWMPER7=period; //设置周期寄存器PWMDTY7=duty; //设置占空比寄存器break;default:break;}PWMEnable(channel);}//*********************************************//函数名：PWMSinglePortInitial//函数功能：PWM端口寄存器的配置//函数参数：5个byte类型//参数1:channel 代表了当前配置的PWM通道//参数2：clkab 参数2,3决定了时钟源的选择//参数3: clock/*PWM Channel 0,1,4,5PCLKAB[0,1,4,5] PCLK[0,1,4,5] Clock Source Selection0 0 Clock A0 1 Clock SA1 0 Clock B1 1 Clock SBPWM Channel 2,3,6,7PCLKAB[2,3,6,7] PCLK[2,3,6,7] Clock Source Selection0 0 Clock B0 1 Clock SB1 0 Clock A1 1 Clock SA*///参数4：polarity PWM极性选择// 0 开始为低电平，周期计数开始为高电平// 1 开始为高电平，周期计数开始为低电平//参数5：align PWM对齐方式选择// 0 输出左对齐// 1 输出中心对齐//返回值：无//**********************************************void PWMsinglePortInitial(byte channel, byte clkab,byte clock, byte polarity,byte align) {if(channel>7) channel=7;//禁止该通道PWMDisable(channel);// PWM 时钟A/B 选择if(clkab==0) PWMCLKAB&=~(1<<channel);else PWMCLKAB|=(1<<channel);// PWM 时钟选择寄存器设置if(clock==0) PWMCLK&=~(1<<channel);else PWMCLK|=(1<<channel);//PWM 极性选择设置if(polarity==0) PWMPOL&=~(1<<channel) ;else PWMPOL|=(1<<channel);//PWM 对齐方式设置if(align==0) PWMCAE&=~(1<<channel);else PWMCAE|=(1<<channel);}//**********************************************************//函数名:PWMGeneralInitial//函数功能：对预分频时钟，分频时钟A，分频时钟B和控制寄存器的配置//函数参数：4个byte类型//参数1 prclk/*Clock A or Clock B Prescaler SelectsPCKA/B2 PCKA/B1 PCKA/B0 Value of Clock A/B0 0 0 Bus clock0 0 1 Bus clock / 20 1 0 Bus clock / 40 1 1 Bus clock / 81 0 0 Bus clock / 161 0 1 Bus clock / 321 1 0 Bus clock / 641 1 1 Bus clock / 128*///参数2：scla// Clock SA = Clock A / (2 * PWMSCLA)//参数3：sclb// Clock SB = Clock B / (2 * PWMSCLB)//参数4：ctl/*control[CON67,CON45,CON23,CON01,PSWAI,PFRZ]PWM级联控制寄存器CON67,CON45,CON23,CON010 单独一个通道1 两个通道级联PSWAI 0 等待模式禁止时钟输入1 等待模式允许时钟输入PFRZ 0 冻结模式允许PWM时钟输入1 冻结模式禁止PWM时钟输入//返回值：无*///**************************************************************void PWMGeneralInitial(byte prclk,byte scla,byte sclb,byte ctl){//禁止所有的PWM通道PWME=0x00;//设置预分频参数PWMPRCLK=prclk;//设置A分频参数PWMSCLA=scla;//设置B分频参数PWMSCLB=sclb;//级联配置PWMCTL=ctl;}//***********************************************************//函数名称:PWMConcatenateSetting//函数功能:PWM级联输出配置//函数参数:1个byte类型，2个word类型//参数1：channel代表了当前配置的PWM通道//参数2：period 周期配置参数/*Left aligned output (CAEx = 0) PWMx Period = Channel Clock Period * PWMPERxCenter Aligned Output (CAEx = 1) PWMx Period = Channel Clock Period * (2 * PWMPERx)*///参数3：duty 占空比配置参数/*Polarity = 0 (PPOL x =0) Duty Cycle = [(PWMPERx-PWMDTYx)/PWMPERx] * 100%Polarity = 1 (PPOLx = 1) Duty Cycle = [PWMDTYx / PWMPERx] * 100%*///返回值：无//**************************************************************void PWMConcatenateSetting(byte channel,word period,word duty){if(channel>7) channel=7;switch(channel){case 0:case 1:PWMDisable(0); //禁止通道0PWMDisable(1); //禁止通道1PWMPER01=period; //设置周期寄存器PWMDTY01=duty; //设置占空比寄存器PWMEnable(0); //使能通道0；PWMEnable(1); //使能通道1；break;case 2:case 3:PWMDisable(2); //禁止通道2PWMDisable(3); //禁止通道3PWMPER23=period; //设置周期寄存器PWMDTY23=duty; //设置占空比寄存器PWMEnable(2); //使能通道2；PWMEnable(3); //使能通道3；break;case 4:case 5:PWMDisable(4); //禁止通道4PWMDisable(5); //禁止通道5PWMPER45=period; //设置周期寄存器PWMDTY45=duty; //设置占空比寄存器PWMEnable(4); //使能通道4；PWMEnable(5); //使能通道5；break;case 6:case 7:PWMDisable(6); //禁止通道6PWMDisable(7); //禁止通道7PWMPER67=period; //设置周期寄存器PWMDTY67=duty; //设置占空比寄存器PWMEnable(6); //使能通道6；PWMEnable(7); //使能通道7；break;default:break;}}定时器应用程序#include <hidef.h> /* common defines and macros */#include "derivative.h" /* derivative-specific definitions */// 函数声明void OutputCompare_Init(void);;void Service_WD(void);void SetBusClock_24MHz(void);// 全局变量uint Timer7_Cnt=0;void main(void) {/* put your own code here */SetBusClock_24MHz();OutputCompare_Init();EnableInterrupts;for(;;) {_FEED_COP(); /* feeds the dog */} /* loop forever *//* please make sure that you never leave main */}void OutputCompare_Init(void){TSCR1_TEN = 0; /* Disable Timer module before adjusting registers. */ TIOS_IOS7 = 1; /* Set Channel 0 as output compare. */ TCTL1_OM7 = 0; /* Set channel 0 to toggle when a Timer match occurs. */ TCTL1_OL7 = 1; /* Set channel 0 to toggle when a Timer match occurs. */ TC7 = 0x4926; /* Set a value for channel 0 timer compare. */ TIE_C7I = 1; /* Enable channel 0 interrupt, handled by function TIM0ISR. */TSCR1_TSWAI = 1; /* Disables the timer module while in wait mode. */ TSCR1_TSFRZ = 1; /* Disables the timer counter while in freeze mode. */TSCR2_PR = 0x7; /* Set prescaler to divide by 128 */ TSCR2_TCRE = 1;TSCR1_TEN = 1; /* Timer Enable. *///中断周期：0x4926*128/24MHz = 100ms}#pragma CODE_SEG __NEAR_SEG NON_BANKEDvoid interrupt VectorNumber_Vtimch7 TIM7_ISR(void){Timer7_Cnt++;TFLG1 = TFLG1_C7F_MASK; /* Clear channel 0 flag. */}#pragma CODE_SEG DEFAULT// 看门狗void Service_WD(void){CPMUARMCOP = 0x55;CPMUARMCOP = 0xAA;}void SetBusClock_24MHz(void){CPMUOSC_OSCE = 1; /* enable ext osc *//*Initialise the system clock from a 16 MHz Crystal,24 MHz Bus CLK (48 MHz VCO, 48 MHz PLL)*/CPMUSYNR = 0x00 | 0x05; /* VCOFRQ[7:6], SYNDIV[5:0] */ CPMUREFDIV = 0x20 | 0x03; /* REFFRQ[7:6], REFDIV[3:0] */ CPMUPOSTDIV = 0x00; /* POSTDIV = 0 FPLL = FVCO */ while(!CPMUFLG_LOCK); /* wait for VCO to stabilize*/ Service_WD();CPMUCLKS_PLLSEL = 1; /* Switch clk to use PLL */}SCI应用程序#include <hidef.h> /* common defines and macros */#include "derivative.h" /* derivative-specific definitions */// 函数声明void SCI0_Init(void);void SCI0_BR(unsigned long br);void SCI0_SendByte(char ch);void Service_WD(void);void SetBusClock_24MHz(void);// 全局变量char SCI_Flag = 0;char SCI_Rev = 0;void main(void) {/* put your own code here */SetBusClock_24MHz();SCI0_BR(38400);SCI0_Init();EnableInterrupts;SCI0_SendByte(0x01);SCI0_SendByte(0x02);SCI0_SendByte(0x03);for(;;) {_FEED_COP(); /* feeds the dog */if(SCI_Flag==1) {SCI_Flag = 0;SCI0_SendByte(SCI_Rev);}} /* loop forever *//* please make sure that you never leave main */}void Service_WD(void){CPMUARMCOP = 0x55;CPMUARMCOP = 0xAA;}void SetBusClock_24MHz(void){CPMUOSC_OSCE = 1; /* enable ext osc *//*Initialise the system clock from a 16 MHz Crystal,24 MHz Bus CLK (48 MHz VCO, 48 MHz PLL)*/CPMUSYNR = 0x00 | 0x05; /* VCOFRQ[7:6], SYNDIV[5:0] */ CPMUREFDIV = 0x20 | 0x03; /* REFFRQ[7:6], REFDIV[3:0] */ CPMUPOSTDIV = 0x00; /* POSTDIV = 0 FPLL = FVCO */ while(!CPMUFLG_LOCK); /* wait for VCO to stabilize*/Service_WD();CPMUCLKS_PLLSEL = 1; /* Switch clk to use PLL */}//串口初始化void SCI0_Init(void){SCI0CR1 = 0x00; /* 8 Data Bits, 1 Start Bit, 1 Stop Bit, No Parity */SCI0CR2 = 0x2C; /* 使能接收中断;使能Tx,Rx *//* SCIASR1, SCIACR1, SCIACR2, SCISR1, SCISR2, SCIDRH & SCIDRL left at default values */ }//串口波特率设置void SCI0_BR(unsigned long br){uint brPrescaler;brPrescaler = (uint)(24000000 / (16 * br));/* Set the Baud Rate */SCI0BDH = (uchar)((brPrescaler>>8));SCI0BDL = (uchar)(brPrescaler);}//串口发送字节void SCI0_SendByte(char ch){/* check SCI transmit data register is empty */while(SCI0SR1_TDRE == 0);SCI0DRL = ch;}//串口中断#pragma CODE_SEG __NEAR_SEG NON_BANKEDvoid interrupt VectorNumber_Vsci0 SCI0_ISR(void){SCI0CR2_RIE=0;while(SCI0SR1_RDRF == 0);SCI_Rev = SCI0DRL;SCI_Flag = 1;SCI0CR2_RIE = 1;}#pragma CODE_SEG DEFAULTADC应用程序#include <hidef.h> /* common defines and macros */#include "derivative.h" /* derivative-specific definitions */// 函数声明void ADC_Init(void);uint ADC_GetValue(byte ch);void Service_WD(void);void SetBusClock_24MHz(void);void Delay(void);// 全局变量uint AD_Result;uint AD_Result2;void main(void) {/* put your own code here */SetBusClock_24MHz();ADC_Init();EnableInterrupts;for(;;) {_FEED_COP(); /* feeds the dog */AD_Result = ADC_GetValue(7);AD_Result2 = ADC_GetValue(0);} /* loop forever *//* please make sure that you never leave main */// AD初始化void ADC_Init(void){ATDCTL1 = 0x3F; /* 10-Bit resolution ,discharge before sampling. */ATDCTL3 = 0x88; /* Right Justified Data, Single conversion sequence */ATDCTL4 = 0xE1; /* 6 MHz, Notice: 12MHz Max ATD Clock, Fatdlk = FBUS/(2*(PRS+1)) *//* 26 ATD Clock cycles sample time */}// ADC通道采集uint ADC_GetValue(byte ch){ATDCTL5 = 0x0F & ch; /* Start Continuous Conversions on ch */while (!ATDSTAT0_SCF); /* wait for conversion sequence to complete */return ATDDR0;}// 看门狗void Service_WD(void){CPMUARMCOP = 0x55;CPMUARMCOP = 0xAA;}void SetBusClock_24MHz(void){CPMUOSC_OSCE = 1; /* enable ext osc *//*Initialise the system clock from a 16 MHz Crystal,24 MHz Bus CLK (48 MHz VCO, 48 MHz PLL)*/CPMUSYNR = 0x00 | 0x05; /* VCOFRQ[7:6], SYNDIV[5:0] */CPMUREFDIV = 0x20 | 0x03; /* REFFRQ[7:6], REFDIV[3:0] */CPMUPOSTDIV = 0x00; /* POSTDIV = 0 FPLL = FVCO */while(!CPMUFLG_LOCK); /* wait for VCO to stabilize*/ Service_WD();CPMUCLKS_PLLSEL = 1; /* Switch clk to use PLL */ }void Delay(void){uint dummy_ctr;for(dummy_ctr=0; dummy_ctr<0x007f;dummy_ctr++){;}}。