usart.rar_AVR RS232_USART_avr_avr pc comunicating_usart avr

/***************************************************** This program was produced by the CodeWizardAVR V1.25.7a Standard Automatic Program Generator � Copyright 1998-2007 Pavel Haiduc, HP InfoTech s.r.l. http://www.hpinfotech.com Project : Version : Date : 2008-8-11 Author : F4CG Company : F4CG Comments: Chip type : ATmega16 Program type : Application Clock frequency : 4.000000 MHz Memory model : Small External SRAM size : 0 Data Stack size : 256 *****************************************************/ #include <mega16.h> #ifndef __SLEEP_DEFINED__ #define __SLEEP_DEFINED__ .EQU __se_bit=0x40 .EQU __sm_mask=0xB0 .EQU __sm_powerdown=0x20 .EQU __sm_powersave=0x30 .EQU __sm_standby=0xA0 .EQU __sm_ext_standby=0xB0 .EQU __sm_adc_noise_red=0x10 .SET power_ctrl_reg=mcucr #endif #include <delay.h> #define RXB8 1 #define TXB8 0 #define UPE 2 #define OVR 3 #define FE 4 #define UDRE 5 #define RXC 7 #define FRAMING_ERROR (1<<FE) #define PARITY_ERROR (1<<UPE) #define DATA_OVERRUN (1<<OVR) #define DATA_REGISTER_EMPTY (1<<UDRE) #define RX_COMPLETE (1<<RXC) // USART Receiver buffer //#define RX_BUFFER_SIZE 8 //char rx_buffer[RX_BUFFER_SIZE]; //#if RX_BUFFER_SIZE<256 //unsigned char rx_wr_index,rx_rd_index,rx_counter; //#else //unsigned int rx_wr_index,rx_rd_index,rx_counter; //#endif // This flag is set on USART Receiver buffer overflow //bit rx_buffer_overflow; // USART Receiver interrupt service routine flash unsigned char led_7[10]={ 0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F }; interrupt [USART_RXC] void usart_rx_isr(void) { char status,data; status=UCSRA; data=UDR; if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0) { PORTA=led_7[data] ; }; } void USART_Transmit(unsigned char data) { while (!(UCSRA & DATA_REGISTER_EMPTY)); // 等待发送寄存器空 UDR = data; // 发送数据 } #include <stdio.h> // Declare your global variables here void main(void) { // Declare your local variables here // Input/Output Ports initialization // Port A initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00; DDRA=0xff; // Port B initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00; DDRB=0x00; // Port C initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00; DDRC=0x00; // Port D initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x03; DDRD=0x02; // Timer/Counter 0 initialization // Clock source: System Clock // Clock value: Timer 0 Stopped // Mode: Normal top=FFh // OC0 output: Disconnected TCCR0=0x00; TCNT0=0x00; OCR0=0x00; // Timer/Counter 1 initialization // Clock source: System Clock // Clock value: Timer 1 Stopped // Mode: Normal top=FFFFh // OC1A output: Discon. // OC1B output: Discon. // Noise Canceler: Off // Input Capture on Falling Edge // Timer 1 Overflow Interrupt: Off // Input Capture Interrupt: Off // Compare A Match Interrupt: Off // Compare B Match Interrupt: Off TCCR1A=0x00; TCCR1B=0x00; TCNT1H=0x00; TCNT1L=0x00; ICR1H=0x00; ICR1L=0x00; OCR1AH=0x00; OCR1AL=0x00; OCR1BH=0x00; OCR1BL=0x00; // Timer/Counter 2 initialization // Clock source: System Clock // Clock value: Timer 2 Stopped // Mode: Normal top=FFh // OC2 output: Disconnected ASSR=0x00; TCCR2=0x00; TCNT2=0x00; OCR2=0x00; // External Interrupt(s) initialization // INT0: Off // INT1: Off // INT2: Off MCUCR=0x00; MCUCSR=0x00; // Timer(s)/Counter(s) Interrupt(s) initialization TIMSK=0x00; // USART initialization // Communication Parameters: 8 Data, 1 Stop, No Parity // USART Receiver: On // USART Transmitter: On // USART Mode: Asynchronous // USART Baud Rate: 9600 UCSRA=0x00; UCSRB=0x98; UCSRC=0x86; UBRRH=0x00; UBRRL=0x19; // Analog Comparator initialization // Analog Comparator: Off // Analog Comparator Input Capture by Timer/Counter 1: Off ACSR=0x80; SFIOR=0x00; // Global enable interrupts #asm("sei") while (1) { unsigned char i=0; // Place your code here for(;;) { USART_Transmit(i); if (++i >= 10) i = 0; delay_ms(500); } }; }