avr控制應用與實務 - isu.edu.t · i-shou university 8 1-1 avr簡介 ‧atmel...

AVR

ATmega8515C

I-Shou University 2

0

A V RCode VisionAVR C CompilerAVRStudio Code VisionAVR C Compiler AVR Code Vision AVRfunction

ATmega8515 I/O PORTATmega8515 ATmega8515Watchdog Timer ATmega8515UART ATmega8515 SPI

I-Shou University 4

(SOC) IC

I/OCPUI/C PORT

A/DD/A

I-Shou University 5

8051IntelMCS-518BitCISC 40pin

PICMicrochipRISC

AVRRISCI/O8051XBOX

I-Shou University 8

1-1 AVR

ATMEL AVR8051AVR805124

AVRATMEL/AVR

ATMELhttp://www.atmel.com/

I-Shou University 9

1-1 AVR

IC Von Neuman(I/O)

Harvard

AVRCPUHarvard

I-Shou University 10

1-1 AVR

CISCRISC

CISCComplex Instruction Set ComputerMemoryCPU

RISCReduced Instruction Set ComputingCPU


1-1 AVR

AVRICFLASHEEPROMRAM

FLASH8Kbyte

EEPROM512byte

RAM600byte


1-2 AVR

20MHz50ns

CMOSuA~2.5mA

Flash ROM1000

I/O10~20mA


1-2 AVR

Lock Bit

ISP JTAGICJTAG

10EEPROM

AVR 1650nS

32128~512SRAM


1-2 AVR

CC

bit/16bit/ PWM


1-3 AVRAT90S

AT90SRISC8-16bit

ROM

Masked ROMEEPROMFlash Memory- Masked ROM

- EEPROM

- Flash Memory


1-3 AVRAT90S

AT90SCRC DES

AVR 8-Bit RISC8-Kbyte544 Byte64K byte SRAM 512 Byte EEPROM8MHz 8 MIPS35ATmega8515AT90S8515ATmega8515AT90S851516MHz 16 MIPS

AT90S8515


1-4 ATmega8515

ATmega8515AT90S8515ATmega8515AT90S8515ATmega8515Program Fuse Bit(s)


1-4-1 ATmega8515 Datasheets

ATmega851588 I / O 3.2

ATmega8515402018199ABCDEI/O PORT



ATmega8515

AVR -

AVR - 130CLOCK- 328- - 11600- 2



- 8K8000/10

- - - True Read-While-Write Operation - 512EEPROM/10- 512SRAM- 64K-



- 18- 116

- - - - (USART)- / (SPI)



- - RC- -

/- 35/- 40PDIP44PLCC TQFP44

MLF



PDIP PLCC TQFP MLF



()- ATmega8515L2.7 - 5.5V- ATmega85154.5 - 5.5V

()- ATmega8515L0 - 8MHz- ATmega85150 - 16MHz


1-4-2 ATmega8515

ATmega85158CMOSAVRRISC

ATmega8515- 8K512EEPROM512SRAM

- - 35I/O32- /- - USART- - SPI-

I-Shou University 26ATmega8515

I-Shou University 27ATmega8515 RISC

swap(int v[], int k){int temp; temp = v[k]; v[k] = v[k+1]; v[k+1] = temp;}

swap: muli $2, $5,4 add $2, $4,$2 lw $15, 0($2) lw $16, 4($2) sw $16, 0($2) sw $15, 4($2) jr $31

00000000101000010000000000011000000000000001100000011000001000011000110001100010000000000000000010001100111100100000000000000100101011001111001000000000000000001010110001100010000000000000010000000011111000000000000000001000

Assembler

Compiler

Binary machinelanguageprogram(for MIPS)

Assemblylanguageprogram(for MIPS)

High-levellanguageprogram(in C)

Instruction Fetch

Instruction Decode and Register Fetch

Execution, Memory Address Computation, or Branch Completion

Memory Access or R-type instruction completion

Write-back step

INSTRUCTIONS TAKE FROM 3 - 5 CYCLES!

Five Execution Steps

Data

Register #

Register #

Register #

PC Address Instruction

Instructionmemory

Registers ALU Address

Data

Datamemory

AddAdd

4

Building the Datapath Use multiplexors to stitch them together

Readregister 1

Readregister 2

Writeregister

Writedata

Writedata

Registers ALU

Add

Zero

RegWrite

MemRead

MemWrite

PCSrc

MemtoReg

Readdata 1

Readdata 2

ALU operation4

Signextend

16 32

Instruction ALUresult

Add

ALUresult

Mux

Mux

Mux

ALUSrc

Address

Datamemory

Readdata

Shiftleft 2

4

Readaddress

Instructionmemory

PC

2

Code VisionAVR C Compiler


Code VisionAVR C CompilerAtmelAVR100

http://www.dontronics.com/cvavr_download.html

3

AVRStudio


AVRStudio

AVRStudioC

AVRStudioCode VisionAVR C CompilerCode VisionAVR C CompilerAVRStudio

AVRStudioWindow 9x / NT / 2000 / XPAVRAVRStudio


AVRStudio

4

Code VisionAVR C Compiler


Code VisionAVR function

Code VisionAVR CC

Code VisionAVR Code VisionAVR


Code VisionAVR

5

AVR


(specification)(schematic design)layout(PCB layout)(mask)(exposure)(development)(rinse)(etching)(drill)


EDA


(exposure)


(development)


(etching)

6 Code VisionAVRfunction


Library Function

Library Function#include

#include // ()

#include // ()


Standard C Input/Output Functions

stdio.h#include #include #define xtal 4000000L // [Hz] #define baud 9600 //Baud ratevoid main(void) {char k;UBRR=xtal/16/baud-1; //UARTBaud rateUCR=0x18; //UARTRX & TX, , 8

while (1) { k=getchar(); //putchar(k); // };

}


Character Type Functions ctype.h

unsigned char isalnum(char c)c1unsigned char isalpha(char c)c1unsigned char isascii(char c)c ASCII1unsigned char iscntrl(char c)c1unsigned char isdigit(char c)c1unsigned char islower(char c)c1unsigned char isprint(char c)c1unsigned char ispunct(char c)c1unsigned char isspace(char c)c1unsigned char isupper(char c)c1unsigned char isxdigit(char c)c1char toascii(char c)cASCIIunsigned char toint(char c)cchar tolower(char c)ccchar toupper(char c)cc


Standard Library Functions

stdlib.h int atoi(char *str)long int atol(char *str)void itoa(int n, char *str)nvoid ltoa(long int n, char *str)nvoid ftoa(float n, unsigned char decimals, char *str)n

void ftoe(float n, unsigned char decimals, char *str) n

float atof(char *str)int rand (void)0-32767void srand(int seed)


Mathematical Functions

math.h signed char sign(int x)x-101unsigned int abs(int x)xint min(int a, int b)abint max(int a, int b)abunsigned char isqrt(unsigned int x)xfloat fmod(float x, float y)x/yfloat modf(float x, float *ipart)xfloat pow(float x, float y)x**yfloat sin(float x)xsinfloat sinh(float x)xsinhfloat atan(float x)xtan-1


Delay Functions

delay.h #include void main(void) {#asm("cli") /* */delay_us(100); /* 100ms *//* ............. */delay_ms(10); /* 10ms */#asm("sei") /* *//* ............. */}


LCD Functions

lcd.h#asm.equ __lcd_port=0x15 ; // LCD PORTC #endasm#include // LCD void main(void){lcd_gotoxy(0,0); //lcd_putsf("User"); //while (1); /**/}


I2C Bus Functions

I2Ci2c.h/* EEPROM */unsigned char eeprom_read(unsigned char address) {unsigned char data;i2c_start();i2c_write(EEPROM_BUS_ADDRESS);i2c_write(address);i2c_start();i2c_write(EEPROM_BUS_ADDRESS | 1);data=i2c_read(0);i2c_stop();return data;}


1 Wire Protocol Functions

CodeVisionAVR

1 Wire1wire.h

#asm.equ __w1_port=0x18 //1 Wire PORTB .equ __w1_bit=2#endasm#include

1 Wire ProtocolProject|Configure|C Compiler


SPI Functions

CSPI spi.h

#include // SPI

unsigned char spi(unsigned char data)

avr控制應用與實務 - isu.edu.t · i-shou university 8 1-1 avr簡介 ‧atmel...

Documents