MSP430g2553 读写Flash以及串口通讯

#include <msp430g2553.h> #include <stdio.h> #include <string.h> #define A0 1<<2 #define A1 1<<3 #define A2 1<<4 #define CTRL 1<<3 unsigned long int Count0=0; float Count1=0; float Count3=100000.0; float Count4=2000.0; float Count5=3000.0; float hedongsheng=0.0; unsigned long int Firstime=0; unsigned long int ZeroNum=0; unsigned long int C0; //秒计数 unsigned char FirstFlag=1; //调零标志 unsigned char CountFlag=0; unsigned char Relay=0; //继电器状态 unsigned char Nouse=0; //30分钟重新调零，此后不再调零 unsigned char Tend[7]; char Command[25]; unsigned char RSV_COUNTER0=0; unsigned char k1,k2,k3,fuwei,fuwei1; /******************************************** 函数名称：void Init_Systemclock(void) 功 能：初始化系统时钟，MCLK=1MHz,SMCLK=1MHz,ACLK No Use 参 数：无 返回值 ：无 *********************************************/ void Init_Systemclock(void) { BCSCTL1 = CALBC1_1MHZ; // Set DCO to 1 MHz DCOCTL = CALDCO_1MHZ; } /******************************************** 函数名称：void Init_WATCHDOG(void) 功 能：Watch Dog定时1S 参 数：无 返回值 ：无 *********************************************/ void Init_WATCHDOG(void) { WDTCTL = WDT_ADLY_1000;// Set Watchdog Timer interval to ~1000ms IE1 |= WDTIE; } /***************************从串口0接收数据*********************************/ unsigned char UART0_GetChar ( void ) { unsigned char Rcv_Data; while ((UCA0STAT & UCBUSY)); //等待有效数据 Rcv_Data=UCA0RXBUF; //读取数据 return(Rcv_Data); } /******************************************** 函数名称：Init_UART(void) 功 能：初始化UART，Baud rate=9600 参 数：无 返回值 ：无 *********************************************/ void Init_UART(void) { P1SEL |= BIT1 + BIT2 ; // Select TX and RX functionality for P1.1 & P1.2 P1SEL2 |= BIT1 + BIT2 ; UCA0CTL1 |= UCSSEL_2; // Have USCI use System MCLK=1MHz UCA0BR0 = 104; // 1MHz 9600, see user manual UCA0BR1 = 0; UCA0MCTL = UCBRS0; // Modulation UCBRSx = 1 // UCA0CTL1 |= UCSSEL_1; // Have USCI use System MCLK=1MHz // UCA0BR0 = 27; // 1MHz 9600, see user manual // UCA0BR1 = 0; // UCA0MCTL = UCBRS1; // Modulation UCBRSx = 1 UCA0CTL1 &= ~UCSWRST; // Start USCI state machine IE2 |=UCA0RXIE; P1DIR |=BIT3; } /******************************************** 函数名称：Init_TA0() 功 能：初始化TA0，计算IN1的频率 参 数：无 返回值 ：无 *********************************************/ void SENT485() { // while ((UCA0STAT & UCBUSY)); // UCA0TXBUF=0x11; char *str_1=(char*)&Count1; for(unsigned char i=0;i<4;i++) { Tend[i+2]=str_1[i]; } Tend[0]=0x01; //设备码 Tend[1]=0x02; //功能码 Tend[6]=0x00; for(unsigned char i=0;i<6;i++) Tend[6]+=Tend[i]; P1OUT|=CTRL; for(unsigned char i=0;i<7;i++) { while ((UCA0STAT & UCBUSY)); UCA0TXBUF=Tend[i]; } char *str_4=(char*)&hedongsheng; for(unsigned char i=0;i<4;i++) { str_4[i]=str_1[i]; } // UART_TX(str_1);//发送计数值 while ((UCA0STAT & UCBUSY)); CountFlag=0; P1OUT&=~BIT3; } void Init_TA0() { TA0CTL |= TASSEL_0+MC_2+TACLR; //选择TACLK时钟作为计数时钟源，2分频，连续计数模式 P1SEL |= BIT0; //P1.0为T0的时钟TACLK输入，接外部待测信号，这样T0就当作计数器用 P1SEL2&=~BIT0; P1DIR &=~BIT0; } /******************************************** 函数名称：UART_TX(char * tx_data) 功 能：UART transmit 参 数：无 返回值 ：无 *********************************************/ void UART_TX(char * tx_data) { unsigned int i=0; while(tx_data[i]) { while ((UCA0STAT & UCBUSY));// Wait if line TX/RX module is busy with data UCA0TXBUF = tx_data[i]; // Send out element i of tx_data array on UART bus i++; // Increment variable for array address } } //****************************************************************************** //*****************************读写flash**************************************** float data1[3]={0.0001,0.01,1.0}; float data2[3]; char *data1_adr=(char*)&data1; float data[3]={0.0,0.0,0.0}; char *data_adr=(char*)&data; char *Flash_ptr=(char*)0x1000;// Flash A information segement A char *Flash_ptrB=(char*)0x1080;// Flash B information segement B //华丽的分割线,读写Flash函数 /*void soft_reset(void) { }*/ /****************************************** 函数名称：Write_SegB (char *ptr,int num) 功 能：写flash函数 参 数：char *ptr目标数据首地址,int num目标占用内存大小 返回值 ：无 *******************************************/ void Write_SegB (char *ptr,int num) { FCTL2 = FWKEY + FSSEL0 + FN1; FCTL1 = FWKEY + ERASE; FCTL3 = FWKEY; *Flash_ptrB=0; // 空写 FCTL1 = FWKEY + WRT; for(char i=0;i<num;i++) { *(Flash_ptrB+i)=* (ptr+i); } FCTL1 = FWKEY; FCTL3 = FWKEY + LOCK; } /****************************************** 函数名称：Read_SegB(char *ptr,int num) 功 能：读flash函数 参 数：char *ptr目标数据首地址,int num目标占用内存大小 返回值 ：无 *******************************************/ void Read_SegB (char *ptr,int num) { FCTL2 = FWKEY + FSSEL0 + FN1; FCTL1 = FWKEY + ERASE; FCTL3 = FWKEY; FCTL1 = FWKEY + WRT; for(int i=0;i<num;i++) { *(ptr+i)=*(Flash_ptrB+i); } FCTL1 = FWKEY; FCTL3 = FWKEY + LOCK; } //****************************************************************************** //*****************************以上是读写flash********************************** //****************************************************************************** /******************************************** 函数名称：main() 功 能：无 参 数：无 返回值 ：无 *********************************************/ void main(void) { Init_Systemclock(); Init_WATCHDOG(); Init_UART(); Init_TA0(); // Write_SegB(data1_adr,12); P3DIR|=BIT2+BIT3+BIT4; //2,3,4脚变为输出 P3OUT|=BIT2; P3OUT&=~BIT3; P3OUT&=~BIT4; _EINT(); // 使能中断 while(FirstFlag) { if(Firstime==9) { ZeroNum=Count0; } if(Firstime==10) { ZeroNum+=Count0; ZeroNum/=2; FirstFlag=0; } } P3OUT|=BIT4; P3OUT&=~BIT2; Relay=3; // Count0=0; while(1) // While 1 is equal to 1 (forever) { if(fuwei) { P3OUT|=BIT2; P3OUT&=~BIT3; P3OUT&=~BIT4; fuwei=0; SENT485(); } if(fuwei1) { ZeroNum=Count0; P3OUT|=BIT4; P3OUT&=~BIT2; Relay=3; fuwei1=0; SENT485(); } if(CountFlag) { Read_SegB(data_adr,12); switch(Relay) { case 3: { Count1=(Count0-ZeroNum)/data[0]; if(Count0<65) { P3OUT|=BIT3; P3OUT&=~BIT4; Relay=2; } } break; case 2: { Count1=(Count0-ZeroNum)/data[1]; if(Count0<65) { P3OUT&=~BIT2; P3OUT&=~BIT3; Relay=1; } if(Count0>9900) { P3OUT|=BIT4; P3OUT&=~BIT3; Relay=3; } } break; case 1: { Count1=(Count0-ZeroNum)/data[2]; if(Count0>9900) { P3OUT|=BIT3; P3OUT&=~BIT2; Relay=2; } } break;