I2C coding for Gyro (L3G4200D)

[CHullaa]

Hi, I'm working on a Gyro sensor (L3G4200D) which interfaces thru i2c.
Does anyone have code or library, or just put some simple i2c code, so I can understand it and change it according to my need?

regards
umair

[ezflyr]

Hi,

Which PIC are you using, and what is your compiler version?

Also, have you done a search of the forum? Here is a thread that discusses
this device, and apparently works to some extent. It's probably a good
start: https://www.ccsinfo.com/forum/viewtopic.php?p=163387

John

[temtronic]

As a new poster here's a few helpful hints..

1) check with the mfr of the device, as they usually will have application notes about the device.

2) download the datasheet from the mfr. It is important and necessary to KNOW what commands,data structure,etc. the device has

3) check with retailers of the product,they usually have 'forums' or sample code

4) let Google be your best friend! I found over 100,000 hits and within the first 20-30 there were great sites about the product

5)Be sure to understand that 5 volt PICs don't electronically interface with 3 volt devices!! You'll need either 3 volt PICs or a 'logic level translator IC.

6) Be sure to use the correct pullup resistors on the I2C bus lines! usually 2k2 to 4k7 will work,but speed,distance,etc. dictate the value

7) There is code out 'there', written in various forms of Basic, that can be adapted to CCS C.

8) Download the I2C diagnostic program from this forum( or the code library). It's a 'must have' when using I2C devices. It'll quickly confirm if your PIC can 'see' your devices.A GREAT starting point as it proves your hardware is good.

9) cut code and learn to use the 'code' button here to allow others to easily see your program

10) be sure to list PIC type, compiler version

11) please read PIC101 and remember this is NOT a 'Proteus' forum AND Proteus is full of bugs,errors, and faulty DRCs...so do NOT use it.If you do don't trust the 'results'.


hth
jay