C8051F320.rar_c8051f320

/* ================================================================================ * Copyright(c) YiheTech studio, All rights reserved * File Name : main.c * Author : LiYong * Date : 2009-6-8 20:36:46 * Version : V1.0 * Description : Demo program * Target Device: C8051F330 * Compiler : KeilC51V8.16 * Note : None ================================================================================ */ #include "C8051F320.h" #include "mytypedef.h" /* ================================================================================ ----------------------------Internal static functions--------------------------- ================================================================================ */ /*Initialize the system clock */ static void ClockInit( void ); /*Initialize timer3, 1ms overflow*/ static void Timer3Init( void ); /*Initialize the GPIOs*/ static void GPIOInit( void ); /*Delay for some times*/ static void Delay10Ms( unsigned char dly ); /*Initialize the UART0*/ static UART0_Init( void ); /*Initialize the timer1 for baudrate*/ void Timer1_Init( void ); /*Send a byte via the UART0*/ static void UART_Send( INT8U dt ); /*Send a byte via the UART0*/ static void UART_SendArray( INT8U *buff, INT8U size ); /* ================================================================================ ----------------------------Internal static variables--------------------------- ================================================================================ */ static volatile INT8U Counter_10ms = 0; //static volatile INT8U UART_RecBuffer[110]; //static volatile INT8U UART_SendBuffer[55]; static volatile INT8U UART_Timeout = 0; static volatile INT8U UART_RecCount = 0; unsigned char rxd_buffer_locked =0; unsigned char rx_tmp=0; //unsigned char idata UART_SendBuffer[110]; unsigned char xdata UART_RecBuffer[150]; unsigned char xdata UART_SendBuffer[150]; /* ================================================================================ * Name : ClockInit( ) * Description : Initialize the system clock * Input : None * Output : None * Note : None ================================================================================ */ static void ClockInit( void ) { PCA0MD &= ~0x40; OSCICN |= 0x83; RSTSRC = 0x04; //system clocm : internal H-F } /* ================================================================================ * Name : Timer3Init( ) * Description : Initialize timer3, 10ms overflow * Input : None * Output : None * Note : None ================================================================================ */ static void Timer3Init( void ) { TMR3RLH = 0xbe; TMR3RLL = 0x00; TMR3H = 0xbe; TMR3L = 0x00; TMR3CN = 0x04; EIE1 |= ( 1<<7 ); } /* ================================================================================ * Name : Timer3_ISR( ) * Description : Interrupt service routine for timer3 * Input : None * Output : None * Note : None ================================================================================ */ static Timer3_ISR( void ) interrupt 14 { TMR3CN &= ~( 1<<7 ); Counter_10ms ++; ++UART_Timeout; } /* ================================================================================ * Name : Delay10Ms( ) * Description : Delay for some times * Input : None * Output : None * Note : None ================================================================================ */ /* static void Delay10Ms( unsigned char dly ) { while( dly-- ) { Counter_10ms = 0; while( Counter_10ms == 0 ); } } */ /* ================================================================================ * Name : GPIOInit( ) * Description : Initialize the GPIOs * Input : None * Output : None * Note : None ================================================================================ */ static void GPIOInit( void ) { P0SKIP = 0x0F; XBR0 = 0x01; XBR1 = 0x40; } /* ================================================================================ * Name : Timer1_Init( ) * Description : Initialize the timer1 for baudrate * Input : None * Output : None * Note : None ================================================================================ *///38400 =64,,57600=98 void Timer1_Init( void ) { TH1 = 0x98; TL1 = 0x98; TCON &= 0x3f; TMOD &= 0x0F; //装初值 TMOD |= ( 2<<4 ); //装初值 CKCON |= 0x01 | ( 1<<3 ); TCON |= ( 1<<6 ); } /* ================================================================================ * Name : UART0_Init( ) * Description : Initialize the UART0, baudrate : 38400 * Input : None * Output : None * Note : None ================================================================================ */ static UART0_Init( void ) { SCON0 = ( 1<<4 ); IE |= ( 1<<4 ); P0MDOUT |= ( 1<<4 ); Timer1_Init( ); } /* ================================================================================ * Name : UART0_ISR( ) * Description : Interrupt service routine for UART0 * Input : None * Output : None * Note : None ================================================================================ */ static INT8U *SendPtr = NULL; static INT8U SendCount = 0; static UART0_ISR( void ) interrupt 4 { INT8U i; if( SCON0 & ( 1<<1 ) ) { //TX ok SCON0 &= ~( 1<<1 ); if( SendCount ) { i = *SendPtr ++; SBUF0 = i; SendCount--; } } else if( SCON0 & ( 1<<0 ) ) { //RX ok UART_Timeout = 0; SCON0 &= ~( 1<<0 ); i = SBUF0; if( UART_RecCount != 255 ) { UART_RecBuffer[UART_RecCount] = i; UART_RecCount ++; } } } /* ================================================================================ * Name : UART_Send( ) * Description : Send a byte via the UART0 * Input : -dt, The byte to be sent * Output : None * Note : None ================================================================================ */ /* static void UART_Send( INT8U dt ) { SendPtr = &dt; SendCount = 1; SCON0 |= ( 1<<1 ); while( SendCount != 0 ); } */ /* ================================================================================ * Name : UART_Send( ) * Description : Send a byte via the UART0 * Input : -dt, The byte to be sent * Output : None * Note : None ================================================================================ */ static void UART_SendArray( INT8U *buff, INT8U size ) { SendPtr = buff; SendCount = size; SCON0 |= ( 1<<1 ); while( SendCount != 0 ); } void DSbase64() { //base64解码，数据包前三个是起始位，地址位，命令，不参与编码和解码 //最后三位是两个crc校验位和一个结束符，也不参与编码和解码 unsigned char a,b,c,d; unsigned char x,y,z; unsigned char ptrIn = 3; unsigned char ptrOut = 3; unsigned short int len=rx_tmp-6;//len应该是4的倍数 unsigned short int p=0; while(p<len) { a = UART_SendBuffer[ptrIn++] - '='; b = UART_SendBuffer[ptrIn++] - '='; c = UART_SendBuffer[ptrIn++] - '='; d = UART_SendBuffer[ptrIn++] - '='; p=p+4; x = (a << 2) | (b >> 4); y = ((b & 0x0f) << 4) | (c >> 2); z = ((c & 0x03) << 6) | d; UART_SendBuffer[ptrOut++] = x; UART_SendBuffer[ptrOut++] = y; UART_SendBuffer[ptrOut++] = z; } } /* ================================================================================ ------------