C语言39-通过USB发送命令读取ADC测试程序（STC32G-DEMO-CODE-220311kw）

/*---------------------------------------------------------------------*/ /* --- STC MCU Limited ------------------------------------------------*/ /* --- STC 1T Series MCU Demo Programme -------------------------------*/ /* --- Mobile: (86)13922805190 ----------------------------------------*/ /* --- Fax: 86-0513-55012956,55012947,55012969 ------------------------*/ /* --- Tel: 86-0513-55012928,55012929,55012966 ------------------------*/ /* --- Web: www.STCMCU.com --------------------------------------------*/ /* --- Web: www.STCMCUDATA.com ---------------------------------------*/ /* --- QQ: 800003751 -------------------------------------------------*/ /* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序 */ /*---------------------------------------------------------------------*/ /************* 功能说明 ************** 本例程基于STC32G为主控芯片的实验箱进行编写测试。 使用Keil C251编译器，Memory Model推荐设置XSmall模式，默认定义变量在edata，单时钟存取访问速度快。 edata建议保留1K给堆栈使用，空间不够时可将大数组、不常用变量加xdata关键字定义到xdata空间。 上位机软通过USB向MCU发送读取AD值命令, MCU收到命令后将获取的AD值通过USB发送给上位机. 命令格式： AA 55 CMD ADH ADL GAPH GAPL CS AA 55：起始码； CMD： 01,上位机向设备获取数据；02，设备向上位机发送数据； ADH： 测量AD值高8位； ADL： 测量AD值低8位； GAPH： 内部参考电压AD值高8位； GAPL： 内部参考电压AD值低8位； CS： 校验码(以上数据的累加值)。 ******************************************/ #include "..\comm\STC32G.h" #include "stdio.h" #include "intrins.h" #include "USB.h" typedef unsigned char u8; typedef unsigned int u16; typedef unsigned long u32; #define MAIN_Fosc 24000000UL /****************************** 用户定义宏 ***********************************/ #define Timer0_Reload (65536UL -(MAIN_Fosc / 1000)) //Timer 0 中断频率, 1000次/秒 /*****************************************************************************/ /************* 本地常量声明 **************/ /************* 本地变量声明 **************/ bit B_1ms; //1ms标志 WORD msecond; WORD Bandgap; /************* 本地函数声明 **************/ void UsbInit(); BYTE ReadReg(BYTE addr); void WriteReg(BYTE addr, BYTE dat); BYTE ReadFifo(BYTE fifo, BYTE *pdat); void WriteFifo(BYTE fifo, BYTE *pdat, BYTE cnt); void ADC_Config(void); void Timer0_Config(WORD tReload); WORD Get_ADC12bitResult(BYTE channel); //channel = 0~15 BYTE GetCheckSum(BYTE *buf, BYTE len); /********************* 主函数 *************************/ void main(void) { BYTE i; WORD ADData; WTST = 0; //设置程序指令延时参数，赋值为0可将CPU执行指令的速度设置为最快 P0M1 = 0; P0M0 = 0; //设置为准双向口 P1M1 = 0; P1M0 = 0; //设置为准双向口 P2M1 = 0; P2M0 = 0; //设置为准双向口 P3M1 = 0; P3M0 = 0; //设置为准双向口 P4M1 = 0; P4M0 = 0; //设置为准双向口 P5M1 = 0; P5M0 = 0; //设置为准双向口 P6M1 = 0; P6M0 = 0; //设置为准双向口 P7M1 = 0; P7M0 = 0; //设置为准双向口 P_SW2 |= 0x80; IRC48MCR |= 0x80; //使能内部48M高速IRC while((IRC48MCR & 0x01)==0); //等待时钟稳定 IRCBAND = (IRCBAND & 0x3f) | 0x80; //USB时钟选择IRC48M P_SW2 &= ~0x80; Timer0_Config((WORD)Timer0_Reload); ADC_Config(); UsbInit(); EA = 1; HidOutput[0]=0xaa; HidOutput[1]=0x55; HidOutput[2]=0x02; for(i=3;i<64;i++) HidOutput[i] = 0; while (1) { if(B_1ms) //1ms到 { B_1ms = 0; if(++msecond >= 300) //300ms到 { msecond = 0; Bandgap = Get_ADC12bitResult(15); //读内部基准ADC, 读15通道 ADData = Get_ADC12bitResult(3); //读外部电压ADC HidOutput[3] = (BYTE)(ADData >> 8); HidOutput[4] = (BYTE)(ADData); HidOutput[5] = (BYTE)(Bandgap >> 8); HidOutput[6] = (BYTE)(Bandgap); HidOutput[7] = GetCheckSum(HidOutput,7); } } } } //======================================================================== BYTE ReadReg(BYTE addr) { BYTE dat; while (USBADR & 0x80); USBADR = addr | 0x80; while (USBADR & 0x80); dat = USBDAT; return dat; } void WriteReg(BYTE addr, BYTE dat) { while (USBADR & 0x80); USBADR = addr & 0x7f; USBDAT = dat; } BYTE ReadFifo(BYTE fifo, BYTE *pdat) { BYTE cnt; BYTE ret; ret = cnt = ReadReg(COUNT0); while (cnt--) { *pdat++ = ReadReg(fifo); } return ret; } void WriteFifo(BYTE fifo, BYTE *pdat, BYTE cnt) { while (cnt--) { WriteReg(fifo, *pdat++); } } void UsbInit() { USBCON = 0x90; IP2H |= 0x80; //USB 中断优先级为 3 级（最高级） IP2 |= 0x80; WriteReg(FADDR, 0x00); WriteReg(POWER, 0x08); WriteReg(INTRIN1E, 0x3f); WriteReg(INTROUT1E, 0x3f); WriteReg(INTRUSBE, 0x00); WriteReg(POWER, 0x01); Ep0Stage.bStage = EPIDLE; } void usb_isr() interrupt USB_VECTOR { BYTE intrusb; BYTE intrin; BYTE introut; BYTE csr; BYTE cnt; WORD len; intrusb = ReadReg(INTRUSB); intrin = ReadReg(INTRIN1); introut = ReadReg(INTROUT1); if (intrusb & RSTIF) { WriteReg(INDEX, 1); WriteReg(INCSR1, INCLRDT); WriteReg(INDEX, 1); WriteReg(OUTCSR1, OUTCLRDT); Ep0Stage.bStage = EPIDLE; } if (intrin & EP0IF) { WriteReg(INDEX, 0); csr = ReadReg(CSR0); if (csr & STSTL) { WriteReg(CSR0, csr & ~STSTL); Ep0Stage.bStage = EPIDLE; } if (csr & SUEND) { WriteReg(CSR0, csr | SSUEND); } switch (Ep0Stage.bStage) { case EPIDLE: if (csr & OPRDY) { Ep0Stage.bStage = EPSTATUS; ReadFifo(FIFO0, (BYTE *)&Setup); ((BYTE *)&Ep0Stage.wResidue)[0] = Setup.wLengthH; ((BYTE *)&Ep0Stage.wResidue)[1]= Setup.wLengthL; switch (Setup.bmRequestType & REQUEST_MASK) { case STANDARD_REQUEST: switch (Setup.bRequest) { case SET_ADDRESS: WriteReg(FADDR, Setup.wValueL); break; case SET_CONFIG: WriteReg(INDEX, 1); WriteReg(INCSR2, INMODEIN); WriteReg(INMAXP, 8); WriteReg(INDEX, 1); WriteReg(INCSR2, INMODEOUT); WriteReg(OUTMAXP, 8); WriteReg(INDEX, 0); break; case GET_DESCRIPTOR: Ep0Stage.bStage = EPDATAIN; switch (Setup.wValueH) { case DESC_DEVICE: Ep0Stage.pData = DEVICEDESC; len = sizeof(DEVICEDESC); break; case DESC_CONFIG: Ep0Stage.pData = CONFIGDESC; len = sizeof(CONFIGDESC); break; case DESC_STRING: switch (Setup.wValueL) { case 0: Ep0Stage.pData = LANGIDDESC; len = sizeof(LANGIDDESC); break; case 1: Ep0Stage.pData = MANUFACTDESC; len = sizeof(MANUFACTDESC); break; case 2: Ep0Stage.pData = PRODUCTDESC; len = sizeof(PRODUCTDESC); break; default: Ep0Stage.bStage = EPSTALL; break; } break; case DESC_HIDREPORT: Ep0Stage.pData = HIDREPORTDESC; len = sizeof(HIDREPORTDESC); break; default: Ep0Stage.bStage = EPSTALL; break; } if (len < Ep0Stage.wResidue) { Ep0Stage.wResidue = len; } break; default: Ep0Stage.bStage = EPSTALL; break; } break; case CLASS_REQUEST: switch (Setup.bRequest) { case GET_REPORT: Ep0Stage.pData = HidFreature; Ep0Stage.bStage = EPDATAIN; break; case SET_REPORT: Ep0Stage.pData = HidFreature; Ep0Stage.bStage = EPDATAOUT; break; case SET_IDLE: break; case GET_IDLE: case GET_PROTOCOL: case SET_PROTOCOL: default: Ep0Stage.bStage = EPSTALL; break;