【中科昊芯Start_DSC28034PNT湖人开发板试用体验】针对逆变器的EPWM和ADC采样配置

本文来源电子发烧友社区，作者：jf_55236000， 帖子地址：https://bbs.elecfans.com/jishu_2292646_1_1.html

从官方对DSC28034芯片的定位可以看出，该芯片是比较适合应用于电力电子电源设备的主控芯片的，下面就针对电力电子应用的主要外设EPWM和ADC的配置进行简单的说明，首先介绍PWM的配置，配置EPWM1模块的两路互补带死区PWM输出EPWM1A和EPWM1B作为单相H4桥的L桥臂两管驱动，配置EPWM2模块的两路互补带死区PWM输出EPWM2A和EPWM2B作为单相H4桥的N桥臂两管驱动，同时在EPWM1计数器为0时触发AD采样触发信号EPWM1_SOCA，以实现电感电流上升沿中心点采样，设置在计数器在AD采样触发后5us触发EPWM1中断，然后在中断中读取AD采样值，然后就可以执行闭环算法了。

具体PWM初始化代码如下：

 

/******************************************************************

*函数名：void InitEPWM(void) *参 数 ：无 *返回值：无 *作 用 ：初始化EPWM ******************************************************************/ void InitEPWM(void) { EALLOW; SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0; /每个启用的ePWM模块中的TBCLK（时基时钟）均已停止。/ EDIS;

//=============EPwm1 Init For INV-L===============// EALLOW; EPwm1Regs.TZCTL.bit.TZA = TZ_FORCE_LO; /*当外部触发事件发生时，强制EPWMxA为低电平*/ EPwm1Regs.TZCTL.bit.TZB = TZ_FORCE_LO; /*当外部触发事件发生时，强制EPWMxA为低电平*/ EPwm1Regs.TZFRC.bit.OST = 1; /*强制单次触发事件产生*/ EDIS;

 

EPwm1Regs.TBPRD = EPWM1_TIMER_TBPRD; /* Period = 4000*TBCLK counts*/ EPwm1Regs.CMPA.half.CMPA = EPWM1_TIMER_HALFPRD; /*设置CMPA值为EPWM1_TIMER_HALFPRD*/ EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; /*增减计数模式*/ EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; /*禁止TBCTR加载相位寄存器TBPHS中的值*/ EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW; /*TBPHS寄存器工作模式选择：映射模式*/ EPwm1Regs.TBCTL.bit.PHSDIR = TB_UP; /*相位同步后计数器方向为向上计数*/ EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; /*计数器CTR = Zero时发出同步信号*/ EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; /*高速时钟分频 1倍分频*/ EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1; /*时基时钟分频 1倍分频*/ EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; /*CMPA寄存器工作模式选择：映射模式*/ EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW; /*CMPB寄存器工作模式选择：映射模式*/ EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; /*当TBCTR=0x0000时，CMPA主寄存器从映射寄存器中加载数据*/ EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; /*当TBCTR=0x0000时，CMPB主寄存器从映射寄存器中加载数据*/ EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR; /*当时间基准计数器的值等于CMPA的值，且正在增计数时，使EPWMxA输出低电平*/ EPwm1Regs.AQCTLA.bit.CAD = AQ_SET; /*当时间基准计数器的值等于CMPA的值，且正在减计数时，使EPWMxA输出高电平*/ EPwm1Regs.AQCTLB.bit.CBU = AQ_SET; /*当时间基准计数器的值等于CMPB的值，且正在增计数时，使EPWMxB输出高电平*/ EPwm1Regs.AQCTLB.bit.CBD = AQ_CLEAR; /*当时间基准计数器的值等于CMPB的值，且正在减计数时，使EPWMxB输出低电平*/ EPwm1Regs.ETSEL.bit.SOCASEL = ET_CTR_ZERO; /*选择EPWMx_SOCA产生的条件：TBCTR=0x0000时产生*/ EPwm1Regs.ETPS.bit.SOCAPRD = ET_1ST; /*ePWM触发采样（EPWMx_SOCA）周期选择：每发生1次事件产生中断信号EPWMx_SOCA*/ EPwm1Regs.ETSEL.bit.SOCAEN = 1; /*使能产生触发采样信号EPWMx_SOCA*/ EPwm1Regs.CMPB = EPWM1_CMPB_INT_CNT; /*设置CMPB值为EPWM1_CMPB_INT_CNT*/ EPwm1Regs.ETSEL.bit.INTSEL = ET_CTRU_CMPB; /*选择EPWMx_INT产生的条件：TBCTR=CMPB时产生*/ EPwm1Regs.ETPS.bit.INTPRD = ET_1ST; /*ePWM中断（EPWMx_INT）周期选择：每发生1次事件产生中断信号EPWMx_INT*/ EPwm1Regs.ETSEL.bit.INTEN = 0; /*使能产生中断信号EPWMx_INT*/ EPwm1Regs.AQSFRC.bit.RLDCSF = 0; /*当计数器TBCTR=0x0000时加载强制事件*/ EPwm1Regs.AQCSFRC.bit.CSFA = AQ_NO_ACTION; /*软件强制触发不动作*/ EPwm1Regs.AQCSFRC.bit.CSFB = AQ_NO_ACTION; EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; /*使能上升沿和下降沿延时信号*/ EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; /*主低模式：EPWMxA和EPWMxB都反转极性*/ EPwm1Regs.DBCTL.bit.IN_MODE = DBA_ALL; /*EPWMxA作为上升沿和下降沿时的信号源*/ EPwm1Regs.DBRED = EPWM1_TIMER_DB; /*死区上升沿延时计数器*/ EPwm1Regs.DBFED = EPWM1_TIMER_DB; /*死区下降沿延时计数器*/

//=============EPwm2 Init For INV-N===============// EALLOW; EPwm2Regs.TZCTL.bit.TZA = TZ_FORCE_LO; /*当外部触发事件发生时，强制EPWMxA为低电平*/ EPwm2Regs.TZCTL.bit.TZB = TZ_FORCE_LO; /*当外部触发事件发生时，强制EPWMxA为低电平*/ EPwm2Regs.TZFRC.bit.OST = 1; /*强制单次触发事件产生*/ EDIS;

 

EPwm2Regs.TBPRD = EPWM1_TIMER_TBPRD; /* Period = 4000*TBCLK counts*/ EPwm2Regs.CMPA.half.CMPA = EPWM1_TIMER_HALFPRD; /*设置CMPA值为EPWM1_TIMER_HALFPRD*/ EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; /*增减计数模式*/ EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; /*使能TBCTR加载相位寄存器TBPHS中的值*/ EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW; /*TBPHS寄存器工作模式选择：映射模式*/ EPwm2Regs.TBCTL.bit.PHSDIR = TB_UP; /*相位同步后计数器方向为向上计数*/ EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; /*将输入同步信号作为同步信号输出*/ EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; /*高速时钟分频 1倍分频*/ EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1; /*时基时钟分频 1倍分频*/ EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; /*CMPA寄存器工作模式选择：映射模式*/ EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW; /*CMPB寄存器工作模式选择：映射模式*/ EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; /*当TBCTR=0x0000时，CMPA主寄存器从映射寄存器中加载数据*/ EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO; /*当TBCTR=0x0000时，CMPB主寄存器从映射寄存器中加载数据*/ EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR; /*当时间基准计数器的值等于CMPA的值，且正在增计数时，使EPWMxA输出低电平*/ EPwm2Regs.AQCTLA.bit.CAD = AQ_SET; /*当时间基准计数器的值等于CMPA的值，且正在减计数时，使EPWMxA输出高电平*/ EPwm2Regs.AQCTLB.bit.CBU = AQ_SET; /*当时间基准计数器的值等于CMPB的值，且正在增计数时，使EPWMxB输出高电平*/ EPwm2Regs.AQCTLB.bit.CBD = AQ_CLEAR; /*当时间基准计数器的值等于CMPB的值，且正在减计数时，使EPWMxB输出低电平*/ EPwm2Regs.AQSFRC.bit.RLDCSF = 0; /*当计数器TBCTR=0x0000时加载强制事件*/ EPwm2Regs.AQCSFRC.bit.CSFA = AQ_NO_ACTION; /*软件强制触发不动作*/ EPwm2Regs.AQCSFRC.bit.CSFB = AQ_NO_ACTION; EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE; /*使能上升沿和下降沿延时信号*/ EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; /*主低模式：EPWMxA和EPWMxB都反转极性*/ EPwm2Regs.DBCTL.bit.IN_MODE = DBA_ALL; /*EPWMxA作为上升沿和下降沿时的信号源*/ EPwm2Regs.DBRED = EPWM1_TIMER_DB; /*死区上升沿延时计数器*/ EPwm2Regs.DBFED = EPWM1_TIMER_DB; /*死区下降沿延时计数器*/ // 设置EPWM同步相位值 EPwm1Regs.TBPHS.half.TBPHS = 0; /*epwm时基计数器相位=0*/ EPwm2Regs.TBPHS.half.TBPHS = 0; /*epwm时基计数器相位=0*/ // 设置EPWM计数寄存器初值 EPwm1Regs.TBCTR = 0x0000; /*当时基计数器等于零（TBCTR = 0x0000）时，影子寄存器的内容将传输到活动寄存器TBPRD（活 动）←TBPRD（影子）*/ EPwm2Regs.TBCTR = 0x0000; EALLOW; SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1; /*所有使能的ePWM模块同步使用TBCLK*/ EDIS;

}

 

以下是ADC采样初始化：设置16路AD采样通道，所有通道采样触发为EPWM1_SOCA

 

/******************************************************************

*函数名：void InitAdcSample(void) *参 数 ：无 *返回值：无 *作 用 ：初始化AD采样 *****************************************************************/ void InitAdcSample(void) { EALLOW; AdcRegs.ADCCTL1.bit.ADCENABLE = 1; / 使能ADC，并给ADC上电，写0无效，写1使能ADC / AdcRegs.ADCCTL2.bit.CLKDIV2EN = 1; / 当系统时钟是120M的时候，配置为1，为SYSCLK/4， 当系统时钟是60M的时候，保持默认值0，为SYSCLK/2 / while(AdcRegs.ADCCTL1.bit.ADCRDY != 1) / ADC 复位完成，当ADCRDY = 1表示复位完成，0表示复位未完成 */ {

 

} AdcRegs.INTSEL1N2.bit.INT1SEL = 15; /* ADCINT1 EOC 源选择 EOC15 作为 ADCINT1作为触发源 */ AdcRegs.INTSEL1N2.bit.INT1E = 0; /* ADCINT1中断屏蔽 */ AdcRegs.INTSEL1N2.bit.INT1CONT = 0; /* 没有进一步的中断脉冲产生直到中断信号标志位被清除 */ AdcRegs.ADCSOC0CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC0CTL.bit.CHSEL = 0; /* 选择转换的输入通道是ADCINA0 */ AdcRegs.ADCSOC0CTL.bit.TRIGSEL = 0x5; /* SOC0的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC1CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC1CTL.bit.CHSEL = 1; /* 选择转换的输入通道是ADCINA1 */ AdcRegs.ADCSOC1CTL.bit.TRIGSEL = 0x5; /* SOC1的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC2CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC2CTL.bit.CHSEL = 2; /* 选择转换的输入通道是ADCINA2 */ AdcRegs.ADCSOC2CTL.bit.TRIGSEL = 0x5; /* SOC2的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC3CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC3CTL.bit.CHSEL = 3; /* 选择转换的输入通道是ADCINA3 */ AdcRegs.ADCSOC3CTL.bit.TRIGSEL = 0x5; /* SOC3的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC4CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC4CTL.bit.CHSEL = 4; /* 选择转换的输入通道是ADCINA4 */ AdcRegs.ADCSOC4CTL.bit.TRIGSEL = 0x5; /* SOC4的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC5CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC5CTL.bit.CHSEL = 5; /* 选择转换的输入通道是ADCINA5 */ AdcRegs.ADCSOC5CTL.bit.TRIGSEL = 0x5; /* SOC5的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC6CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC6CTL.bit.CHSEL = 6; /* 选择转换的输入通道是ADCINA6 */ AdcRegs.ADCSOC6CTL.bit.TRIGSEL = 0x5; /* SOC6的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC7CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC7CTL.bit.CHSEL = 7; /* 选择转换的输入通道是ADCINA7 */ AdcRegs.ADCSOC7CTL.bit.TRIGSEL = 0x5; /* SOC7的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC8CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC8CTL.bit.CHSEL = 8; /* 选择转换的输入通道是ADCINB0 */ AdcRegs.ADCSOC8CTL.bit.TRIGSEL = 0x5; /* SOC8的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC9CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC9CTL.bit.CHSEL =9; /* 选择转换的输入通道是ADCINB1 */ AdcRegs.ADCSOC9CTL.bit.TRIGSEL = 0x5; /* SOC9的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC10CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC10CTL.bit.CHSEL = 10; /* 选择转换的输入通道是ADCINB2 */ AdcRegs.ADCSOC10CTL.bit.TRIGSEL = 0x5; /* SOC10的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC11CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC11CTL.bit.CHSEL = 11; /* 选择转换的输入通道是ADCINB3 */ AdcRegs.ADCSOC11CTL.bit.TRIGSEL = 0x5; /* SOC11的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC12CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC12CTL.bit.CHSEL = 12; /* 选择转换的输入通道是ADCINB4 */ AdcRegs.ADCSOC12CTL.bit.TRIGSEL = 0x5; /* SOC12的触发源是epwm1的ADCSOCA */ AdcRegs.ADCSOC13CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC13CTL.bit.CHSEL = 13; /* 选择转换的输入通道是ADCINB5 */ AdcRegs.ADCSOC13CTL.bit.TRIGSEL = 0x5; /* SOC13的触发源是epwm4的ADCSOCA */ AdcRegs.ADCSOC14CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC14CTL.bit.CHSEL = 14; /* 选择转换的输入通道是ADCINB6 */ AdcRegs.ADCSOC14CTL.bit.TRIGSEL = 0x5; /* SOC14的触发源是epwm5的ADCSOCA */ AdcRegs.ADCSOC15CTL.bit.ACQPS = 6; /* 窗口的采样周期是2n+6个clock cycles */ AdcRegs.ADCSOC15CTL.bit.CHSEL = 15; /* 选择转换的输入通道是ADCINB7 */ AdcRegs.ADCSOC15CTL.bit.TRIGSEL = 0x5; /* SOC15的触发源是epwm6的ADCSOCA */ AdcRegs.ADCINTSOCSEL1.all = 0x0000; /* No ADCInterrupt will trigger SOCx*/ AdcRegs.ADCINTSOCSEL2.all = 0x0000; AdcRegs.SOCPRICTL.bit.SOCPRIORITY = 0x00; /* SOC priority is handled in round robin mode for all channels.*/ AdcRegs.SOCPRICTL.bit.RRPOINTER = 0x0F; /* SOC15是最后一个转换，SOC0是最高的round robin优先 */ AdcRegs.SOCPRICTL.bit.ONESHOT = 0; /* One shot 模式不使能 */ EDIS;

}

 

然后配置PWM输出的GPIO：

``

/******************************************************************

*函数名：void InitGPIO(void)

*参 数 ：无

*返回值：无

*作 用 ：初始化GPIO

******************************************************************/

void InitGPIO(void)

{

EALLOW;

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 0;

GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO0 = PWM1A-->OPWM1A/GPIO0

 

GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0;

GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // GPIO1 = PWM1B-->OPWM1B/GPIO1

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // GPIO2 = PWM2A-->OPWM2A/GPIO2

GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // GPIO3 = PWM2B-->OPWM2B/GPIO3

GpioCtrlRegs.GPAPUD.bit.GPIO4 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1; // GPIO4 = PWM3A-->OPWM3A/GPIO4

GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1; // GPIO5 = PWM3B-->OPWM3B/GPIO5

GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 1; // GPIO6 = PWM4A-->OPWM4A/GPIO6

GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 1; // GPIO7 = PWM4B-->OPWM4B/GPIO7

GpioCtrlRegs.GPAPUD.bit.GPIO8 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 1; // GPIO8 = PWM5A-->OPWM5A/GPIO8

GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 1; // GPIO9 = PWM5B-->OPWM5B/GPIO9

GpioCtrlRegs.GPAPUD.bit.GPIO10 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 1; // GPIO10 = PWM6A-->OPWM6A/GPIO10

GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0; GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 1; // GPIO11 = PWM6B-->OPWM6B/GPIO11 EDIS; }

 

配置好PWM中断使能

/******************************************************************

*函数名：void EnableInt(void)

*参 数 ：无

*返回值：无

*作 用 ：使能外设中断

******************************************************************/

void EnableInt(void)

{

EALLOW; / 允许访问受保护的空间 /

PieVectTable.EPWM1_INT = &Epwm1_ISR; / 将Epwm1_ISR入口地址赋给EPWM1_INT /

EDIS; / 禁止访问受保护的空间 /

 

IER |= M_INT3; /*使能CPU中断组3*/

PieCtrlRegs.PIEIER3.bit.INTx1 = 1; /使能PIE3.1的中断/

 

// EINT;

}

中断服务函数：在中断服务函数中取得AD采样值

/******************************************************************

*函数名：void INTERRUPT Epwm1_ISR(void)

*参 数：无

*返回值：无

*作 用：中断服务函数改变pwm死区

******************************************************************/

void INTERRUPT Epwm1_ISR(void)

{

EPwm1Regs.ETCLR.bit.INT = 1;

PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;

 

IntADResultGet();

 

 

}

/************************************************************************************

// IntADResultGet

// 功能描述：AD采样结果获取

************************************************************************************/

Uint16 AdcSample[16];

void CODE_SECTION("ramfuncs") IntADResultGet(void)

{

Uint16 iAdRltA0_0, iAdRltA1_0, iAdRltA2_0, iAdRltA3_0, iAdRltA4_0, iAdRltA5_0, iAdRltA6_0, iAdRltA7_0;

Uint16 iAdRltB0_0, iAdRltB1_0, iAdRltB2_0, iAdRltB3_0, iAdRltB4_0, iAdRltB5_0, iAdRltB6_0, iAdRltB7_0;

 

while(AdcRegs.ADCCTL1.bit.ADCBSY == 1)

{ continue; // 等待AD采样结束 }

iAdRltA0_0 = AdcResult.ADCRESULT0; iAdRltA1_0 = AdcResult.ADCRESULT1; iAdRltA2_0 = AdcResult.ADCRESULT2; iAdRltA3_0 = AdcResult.ADCRESULT3; iAdRltA4_0 = AdcResult.ADCRESULT4; iAdRltA5_0 = AdcResult.ADCRESULT5; iAdRltA6_0 = AdcResult.ADCRESULT6; iAdRltA7_0 = AdcResult.ADCRESULT7; iAdRltB0_0 = AdcResult.ADCRESULT8; iAdRltB1_0 = AdcResult.ADCRESULT9; iAdRltB2_0 = AdcResult.ADCRESULT10; iAdRltB3_0 = AdcResult.ADCRESULT11; iAdRltB4_0 = AdcResult.ADCRESULT12; iAdRltB5_0 = AdcResult.ADCRESULT13; iAdRltB6_0 = AdcResult.ADCRESULT14; iAdRltB7_0 = AdcResult.ADCRESULT15;

AdcSample[0] = iAdRltA0_0; AdcSample[1] = iAdRltA1_0; AdcSample[2] = iAdRltA2_0; AdcSample[3] = iAdRltA3_0; AdcSample[4] = iAdRltA4_0; AdcSample[5] = iAdRltA5_0; AdcSample[6] = iAdRltA6_0; AdcSample[7] = iAdRltA7_0;

AdcSample[8] = iAdRltB0_0; AdcSample[9] = iAdRltB1_0; AdcSample[10] = iAdRltB2_0; AdcSample[11] = iAdRltB3_0; AdcSample[12] = iAdRltB4_0; AdcSample[13] = iAdRltB5_0; AdcSample[14] = iAdRltB6_0; AdcSample[15] = iAdRltB7_0; }

 

主函数中打开总中断和看门狗喂狗等

 

int main(void)

{ SystemInit(); // 片上外设初始化

 

EnableDog(); // 使能看门狗 EPwm1Regs.ETCLR.bit.INT = 1; // 使能中断 EPwm1Regs.ETSEL.bit.INTEN = 1; EINT; while(1) { ServiceDog(); // 看门狗喂狗 SysTimeBase(); // 系统时基 StateLEDCtrl(); // 系统状态灯控制 } return 0;

}

 

仿真读取的AD采样值：

只有第ADC_A4通道接着3.3V，所以它的采样值为4096，其他都为0

另外说明一个小问题，在仿真时是没办法实时看变量的，IDE不支持，这个很影响调试

同时，手册上说的参考2.5.8，实际是没有这个章节的