《TMSF28335程序设计实例解析》由会员分享，可在线阅读，更多相关《TMSF28335程序设计实例解析（12页珍藏版）》请在金锄头文库上搜索。
1、TMSF28335 程序设计实例实现功能:AD 采样+PI 调节+ 一阶惯性head file#include DSP2833x_Device.h#in clude DSP2833x_Examples.hmacro#defi ne S1 AdcRegs.ADCST.bit.lNT_SEQ1/*globa| variable floatthis_zl;float upon _zl;int Pln=0; /symbol parameterint SCn=0; / symbol parameterfloat adclo=0; /AD refere need voltagefloat adcres=6
2、5536;float Ta; 一阶系统时间常数float temp=0.950213;int sc_D;float mf_scz;float mf_sc; /output*mai nfunction*un sig ned int * Sda;float power_set;float power_get; / actual output voltagefloat KP_wr; /PI proporti on coefficie ntfloat KI_wr; /PI in tegral coefficie ntfloat error_sg; /PI correlative parameterfl
3、oat error_1;float error_2;fun ctionin terrupt void cpu_timerO_isr(void;in terrupt void ad_i sr(void;void Ini t_TimerO(void;void Ini t_Xi ntf(void;void Init_Gpio(void; /GPIO initialization program void Initadc(void; /AD initializefloat PI_T(float power_sd,float pow_i n; /PI con trol fun ctio nvoid de
4、lay_ys(void; /delay subprogramvoid ma in (voidun sig ned int * Sda =(u nsig ned int * 0x200000; /define DA address,XINTFZone7 InitSysCtrl(; / initialize system subprogramIni t_Timer0(;DINT;In itPieCtrl(;IER=0x0000;IFR=0x0000;In itPieVectTable(;In it_Gpio(;In itadc(;In it_Xi ntf(;CpuTimer0Regs.TCR.bi
5、t.TIE=1;EALLOW; /解除寄存器保护PieVectTable.TINT0=&cpu_timer0_isr; /用 CUP_Timer0 中断函数入口更新/PIE 向量表PieVectTable.ADCINT=&adsr; /用 AD 中断函数更新 PIE 向量表EDIS; /使能寄存器保护Con figCpuTimer(&CpuTimer0,150,500; /timi ng 500usStartCpuTimer0(;PieCtrlRegs.PIEIER1.all=0x60; 使能 PIE 内的 CUP_TimerO 和 AD中断IER |=OxOOO1; / 使能 CPU INT
6、 1EINT;*in itializationCPU timer*void In it_Timer0(voidCpuTimer0Regs.PRD.all=75000; /set timer period timi ng:500usCpuTimerORegs.TPR.all=O;CpuTimerORegs.TPRH.all=O;CpuTimer0Regs.TCR.bit.TSS=1; /stop timer*A/D|； re*； n*void In itadc(voidlong i; /AD in itializeAdcRegs.ADCTRL1.bit.RESET=1;for(i=0;i100;
7、i+ ;AdcRegs.ADCTRL1.bit.RESET=0;AdcRegs.ADCTRL1.bit.SUSMOD=0;AdcRegs.ADCTRL1.bit.ACQ_PS=0; /sett ing sample win dowAdcRegs.ADCTRL1.bit.CPS=0;AdcRegs.ADCTRL1.bit.CONT_RUN=0; / 启动-停止模式AdcRegs.ADCTRL1.bit.SEQ_CASC=0; /AdcRegs.ADCTRL3.bit.ADCBGRFDN=3; / 给 ADC 模块的内部基准电路上电for(i=0;i400000;i+ ; /delay more
8、than 7msAdcRegs.ADCTRL3.bit.ADCPWDN=1; /给 ADC 模块的其余模拟电路上电for(i=0;i10000;i+ ; /delay more than 20usAdcRegs.ADCTRL3.bit.ADCCLKPS=10;AdcRegs.ADCTRL3.bit.SMODE_SEL=0; /choose sample styleAdcRegs.ADCMAXCONV.all=0x0000;AdcRegs.ADCCHSELSEQ1.bit.CONV00=0x0000;AdcRegs.ADCST.bit.lNT_SEQ1_CLR=1;AdcRegs.ADCTRL2
9、.bit.RST_SEQ1=1; / 复位排序器 1AdcRegs.ADCTRL2.bit.lNT_ENA_SEQ 仁 1; /SEQ1 in terruptAdcRegs.ADCTRL2.bit.lNT_M0D_SEQ 仁 0; /choose in terrupt stylein itializatio*void Ini t_Xin*external peripheralsntf(voidEALLOW;Xin tfRegs.XINTCNF2.bit.XTIMCLK=1;Xin tfRegs.XTIMING6.bit.XWRLEAD=3;Xin tfRegs.XTIMING6.bit.XWR
10、ACTIVE=7;Xin tfRegs.XTIMING6.bit.XWRTRAIL=3;Xin tfRegs.XTIMING6.bit.XRDLEAD=3;Xin tfRegs.XTIMING6.bit.XRDACTIVE=7;Xin tfRegs.XTIMING6.bit.XRDTRAIL=3;Xin tfRegs.XTIMING6.bit.X2TIMING=0;Xin tfRegs.XTIMING6.bit.USEREADY=0;Xin tfRegs.XTIMING6.bit.XSIZE=3;EDIS;*in itializatio n* void Ini t_Gpio(voidEALLO
11、W; /GPIO in itializeGpioCtrlRegs.GPBMUX1.all=0xFFFFFC00; /设置 B 口为地址线以及 DAC 片选信号 GpioCtrlRegs.GPCMUX1.all=0xFFFFFFFF; /set C Port as date addressGpioCtrlRegs.GPAMUX1.all=0x0000;GpioCtrlRegs.GPADIR.all= 0x0003;GpioDataRegs.GPADA T.all= 0x0003;GpioDataRegs.GPACLEAR.all= 0x0003; /choose GPIO1,2 as DA si
12、g nal addressEDIS;*PIfun cti*portal parameter:power_sdonand pow_i nexport parameter:this_zlfloat PI_T(float power_sd,float power_i nerror_1 = error_sg;error_sg = power_sd - power_i n;error_2 = error_sg - error_1;if(Pln = 0error_2 = 4.0; /avoid error_2 too largePin+;this_zl = KP_wr*error_sg + Kl_wr*e
13、rror_2;error_sg = error_1;return this_zl;*Delayfun cti*void delay_ys(voidonlong i;for(i=0;i100000;i+ ;*timer 0 in terrupt dealfun cti*onin terrupt void cpu_timer0_isr(voidDINT;StopCpuTimerO(;CpuTimerORegs.TCR.bit.TIF=1; 清 CPU 定时器 0 的中断标志PieCtrIRegs.PIEACK.all |=OxOOO1; 使能第一组中断以使 AD 产生的中断能/被 CPU 响应Ad
14、cRegs.ADCTRL2.bit.SOC_SEQ 仁 1; 使能排序器，启动 AD 转换EINT;while(S 仁=0 ; /等待 AD 转换的完成delay_ys(;*fun ction*AD in terrupt*in terrupt void ad_isr(voidDINT;AdcRegs.ADCTRL2.bit.RST_SEQ 仁 1;power_get=(floatAdcRegs.ADCRESULT0*3.0/adcres + adclo; /X 寸采样数据进行转换if(SC n = 0 mf_scz = 2.5;SCn+;mf_sc=mf_scz;upon_zl=PI_T( power_get, mf_sc; 调用 PI 环节的函数mf_sc=1/Ta * upon_zl * temp; /通过一阶惯性环节的处理delay_ys(;mf_scz=mf_sc;sc_D=(i nt(mf_sc * 4096/5;* (Sda = sc_D; 写数据到 DA 的数据线AdcRegs.ADCST.bit.lNT_SEQ1_CLR=1;PieCtrIRegs.PIEACK.all |=0x0001; 使能第一组中断EINT;StartCpuTimer0(; 启动定时器 0,开始下一次采样
