Hello all
i am having difficulty using LSM303DLHC
this is my code
Chip type : ATmega16
Program type : Application
AVR Core Clock frequency: 12.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 256
*****************************************************/
#include <mega16.h>
#asm
.equ __i2c_port = 0x15 ; PORTC
.equ __sda_bit = 1
.equ __scl_bit = 0
#endasm
// Alphanumeric LCD functions
#asm
.equ __lcd_port=0x18 ; PORTB
#endasm
#include <alcd.h>
#include <i2c.h>
#include <stdio.h>
#include <delay.h>
// Declare your global variables here
#define e_lcd PINB.7
int accX,accY,accZ;
unsigned char a,b,c,d,e,f;
char lcd_buffer[33];
void writeRegisterValueByte(unsigned char I2Caddress,unsigned char address,unsigned char value)
{
i2c_start();
i2c_write(I2Caddress);
i2c_write(address);
i2c_write(value);
i2c_stop();
}
void readLSM303DLHC(void)
{
i2c_start();
i2c_write(0x32);
i2c_write(0x28 | 0x80);
i2c_stop();
i2c_start();
i2c_write(0x33);
a = i2c_read(1);
b = i2c_read(1);
c = i2c_read(1);
d = i2c_read(1);
e = i2c_read(1);
f = i2c_read(0);
i2c_stop();
accX = (int)b;
accX = accX << 8;
accX = a;
accY = (int)d;
accY = accY << 8;
accY |=c;
accZ = (int)f;
accZ = accZ << 8;
accZ |= e;
}
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=0x00;
// Port B initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTB=0x00;
DDRB=0xFF;
// 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=0x00;
DDRD=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 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: Timer2 Stopped
// Mode: Normal top=0xFF
// 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
// USART disabled
UCSRB=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
// ADC initialization
// ADC disabled
ADCSRA=0x00;
// SPI initialization
// SPI disabled
SPCR=0x00;
// TWI initialization
// TWI disabled
TWCR=0x00;
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTB Bit 0
// RD - PORTB Bit 1
// EN - PORTB Bit 2
// D4 - PORTB Bit 3
// D5 - PORTB Bit 4
// D6 - PORTB Bit 5
// D7 - PORTB Bit 6
// Characters/line: 16
lcd_init(16);
lcd_clear();
e_lcd = 1 ;
lcd_gotoxy(0,0);
// 1234567890123456
lcd_putsf(" heloooo");
lcd_gotoxy(0,1);
lcd_putsf(" helloooo ");
i2c_init();
delay_ms(500);
writeRegisterValueByte(0x32,0x20,0x27);
writeRegisterValueByte(0x32,0x23,0x00);
while (1)
{
// Place your code here
readLSM303DLHC();
lcd_clear();
sprintf(lcd_buffer,"accX = %d accY = %d accZ = %d ",accX/164,accY/164,accZ/164);
lcd_puts(lcd_buffer);
delay_ms(500);
}
}
the data wont out
its always
AccX : 0 Accy :0 AccZ :0
can somebody help me
i am testing the data from LSM303DLHC at 2g
but the data wont out…
using ATmega16 and c coding…
please help me
i am still new in coding…