Discussions

Posted by Alf Pettersson on November 27, 2015 at 1:04pm

Help!!

Tried to connect as in the wiki, but no readings?

Do I have to change the I2C adress on the SF10/x, default 0x55?

Running APM:Copter V3.3.1.

Is it possible to see devices connected to the I2C bus?

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i2c, pixhawk, rangefinder, sf10

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Robert Gowans February 29, 2016 at 9:38am

I'm doing some connectivity tests with the various Copter versions and LightWare devices. I'll let you know as soon as I have some concrete information.
- Justin Ward > Robert Gowans March 18, 2016 at 3:35am
  
  @Robert I am about to start testing our SF10c via I2C. How did your tests go. Any advice?
  - Robert Gowans > Justin Ward March 18, 2016 at 3:47am
    
    Hi Justin,
    
    It appears that copter 3.3.3 does not support I2C for LightWare devices, however when I use the latest development version of 3.4 it works perfectly.
    
    You also need to make sure you have the RNGFND_ADDR set to 85, which matches the SF10's default I2C address of 0x55 - the 85 is after you convert to decimal.
- Al B > Robert Gowans February 29, 2016 at 9:40am
  
  Thanks Robert!
Al B February 29, 2016 at 9:13am

Alf,

But Copter-3.4 has not been released. Did you mean Master? Can you connect via I2C with that code? Thanks!
Al B February 28, 2016 at 10:52pm

Copter-3.3.3 claims to support the LightWare SF10/x via I2C. I also tried to connect as in the wiki, but I don't get any readings either. Were you able to make it work?
- Robert Gowans > Al B February 29, 2016 at 6:41am
  
  Hi Al
  
  Are you able to try Copter-3.4?
Alf Pettersson November 27, 2015 at 1:36pm

How can i set the parameter RNGFND_ADDR found in wiki parameter list?

Or is it for coming version of copter?