L3GD20 problem in reading values *** Locked - No progress

[rajm]

i cant understand about 1st header line (ie)
#include "C:\Users\semerci\Desktop\dddd\lcdddd.h". also tell me whether i can use #include<lcd.c> instead of flex lcd. in the imu.c there is no device address, it contains only register address..
im using PIC18f4550


regards

[temtronic]

Anyone else totally lost in this thread?

RAJM..

I suggest the following

Start over and keep code simple

1) download PCM programmers' I2C scanner diagnostic' program from the code library.

Install and run . It will tell you if your hardware is OK and that the PIC can 'see' the gyro module.There's no point trying anything until 'scanner' sees the module!

2) code only for 1 of the module functions(say gyroscope).Get it working properly.

3) once that's done, proceed to a 2nd function, again, get it working, confirming #1 still works.

4) now do the 3rd function,which should be a lot easier as the others all work fine!

I use the 4550 and flex_lcd without any problems.You do NOT need any interrupts so get rid any ISR code.The flex_lcd is easier to modify and use.

Query. Is the module designed for 5 volts as that PIC is a 5V product.

hth
jay

[vrs]

#include "C:\Users\semerci\Desktop\dddd\lcdddd.h".
it does not matter. instead of "include <PIC16F877A>". Add
I do not have PIC18F4550.
I'm sorry.
copy pasted the code is missing.
add them. imu.c


gyro_ADD_W = 11010110
gyro_ADD_R = 11010111
acce_ADD_W =00110010
acce_ADD_R =00110011
magn_ADD_W =00111100
magn_ADD_R =00111101


You can also use 2x lcd.

printf function 2x16 (etc.) .According to straighten lcd.c.

returns the code value. If you type returns the same value. If you can try your hand with 16F877. I tried it and it worked for me is just a 16F877. but the data is between 0 to 32000. the desired value for the mathematical operation is required.I add the code to the site I can arrange it

[rajm]

hi

Code is giving error for me, even though i change header file as #include<18f4550.h>, every error by clicking them it shows error in the same header line. I can't understand for what you using tur and b and b+1 in I2c write function.


regards

[vrs]

tur = gyro_add_w ===> 0b11010110
Can you add your code

[rajm]

hi
i compiled without error, but i don't know what value should come in lcd. I'm getting 3 values of four digit no, but its getting flickering. I'm not able to see changes in values when i change sensor.

Kindly change my first code which i posted for gyro sensor, in that I'm getting only -1 as fixed without changing even i change my sensor.

regards

[vrs]

your code
add forum

[rajm]

hi
I have used same code as you posted by deleting some printf statement.

[vrs]

for ( i=40;i<46;i+=2)
b=i ====> 40===> 0x28 ===> (acceXlow LSM303_OUT_X_L_A 0x28)or(gyroXlow L3G_OUT_X_L 0x28)
b+1 ====> 41===> 0x29 ===> (acceXlow LSM303_OUT_X_L_A 0x29 )or(gyroXlow L3G_OUT_X_L 0x29 )

variable c = m(magnetometer) or a(accelometer) or g(gyroscope)
variable a = lcd coloumn
variable num = lcd line (my lcd has 4 line)(your lcd has 2 line) num = max 2 or Lcd_gotoxy(a, 1); Lcd_gotoxy([coloumn, line);



you can delete(
num=2; and num=3; and num=4;
Lcd_gotoxy(num+8, 1);
printf(lcd_putc,"\%c",c);
Lcd_gotoxy(1, 1);
printf(lcd_putc,"satirlar=");)

add
Lcd_gotoxy(a, 1); printf(lcd_putc,"\%Ld",sens);


cast gyro
display(gyro_ADD_R,gyro_ADD_W);
/* display(acce_ADD_R,acce_ADD_W);
init_magn();
display(magn_ADD_R,magn_ADD_W);
*/





I'm sorry if I'm rude wrote.
I do not know English. I am writing the message using Google Translate.

[vrs]

//cast gyro
sensH=0,sensL=0;
signed long sens=0;

void writeRegister(int8 reg,int8 value,int addr)
{
i2c_start();
i2c_write(addr);
i2c_write(reg);
i2c_write(value);
i2c_stop();

}

void init_gyro()
{
writeRegister(L3G_CTRL_REG1,0b11101111,gyro_ADD_W);
writeRegister(L3G_CTRL_REG2,0b00000000,gyro_ADD_W);
writeRegister(L3G_CTRL_REG4,0b0010000,gyro_ADD_W);

}


int a;

void display(int adresR,int adresW)
{
int i;
a=0;
for ( i=40;i<46;i+=2)
{

i2c_start(); //high adres read
i2c_write(adresW);
i2c_write(i);
i2c_start();
i2c_write(adresR);
sensH=i2c_read(),i2c_read(0);
i2c_stop();
i2c_start(); //low adres read
i2c_write(adresW);
i2c_write(i+1);
i2c_start();
i2c_write(adresR);
sensL=i2c_read(),i2c_read(0);
i2c_stop();
sens=make16(sensH,sensL); //high + low adress
if (sens>=0)
{Lcd_gotoxy(a+1, 2); printf(lcd_putc,"\%Ld",sens);}
else{Lcd_gotoxy(a, 2); printf(lcd_putc,"\%Ld",sens);}


a=a+6; //lcd coloumn

}
}


void main()
{
set_tris_c(0xFE);
set_tris_D(0x00);

lcd_init();
printf(lcd_putc, "\f");
lcd_gotoxy(1, 1);
printf(lcd_putc, "minimu9 v2");
init_gyro();



while(1)
{
display(gyro_ADD_R,gyro_ADD_W); // gyro
delay_ms(100);
printf(lcd_putc"\f");
lcd_gotoxy(1, 1);
printf(lcd_putc, " X Y Z");

}

}

[rajm]

hi

I have tried another code which you posted in the thread minIMu9v2 problem for all three sensor, it shows value with light flickering and i can able to see the changes in the value as i change the sensor. Kindly say what is the difference between two code. the code in the link http://www.ccsinfo.com/forum/viewtopic.php?t=50012&highlight=minimu9
displays result for three axis as separate for 3 sensor, but in the latest code it shows only 3 values with 4 digit.
Kindly suggest which code to use.

regards

[vrs]

hi

last code for just gyro. and for 2 line lcd.

is as follows screenshot.

[rajm]

hi
The gyro code which you posted shows result with lot of flickering and changes without changing the sensor. What to do for this?

regards

[vrs]

I do not know English. so I did not understand some of its.

https://github.com/pololu/MinIMU-9-Arduino-AHRS/blob/master/MinIMU9AHRS/MinIMU9AHRS.ino

https://github.com/pololu/MinIMU-9-Arduino-AHRS/blob/master/MinIMU9AHRS/I2C.ino

https://github.com/pololu/MinIMU-9-Arduino-AHRS/blob/master/MinIMU9AHRS/DCM.ino

[vrs]

http://forum.pololu.com/viewforum.php?f=6&start=50

http://forum.pololu.com/viewtopic.php?f=3&t=5998
http://forum.pololu.com/viewtopic.php?f=6&t=6058