Using the TI LaunchPad from your KoP

[ILAMtitan]

Awesome to hear you guys are jumping right in!

I know it's robot season, so there isn't much time left over for personal tinkering, but the community over at 43oh is a really great resource for people starting out. You might want to check out their projects forum for some ideas on what the board can do.

[taichichuan]

Originally Posted by ILAMtitan

Awesome to hear you guys are jumping right in!

I know it's robot season, so there isn't much time left over for personal tinkering, but the community over at 43oh is a really great resource for people starting out. You might want to check out their projects forum for some ideas on what the board can do.

Personal time during build season? What's that? ;-). But, I will cruise over to the link and have a look. In the mean time, I'm trying to find info on the HID output features. Not much available in the docs so far. So, it looks like it's going to be interesting to noodle it out.

How can you tell the pioneers? They're the ones with the arrows in their backs.

[ILAMtitan]

Originally Posted by taichichuan

Personal time during build season? What's that? ;-). But, I will cruise over to the link and have a look. In the mean time, I'm trying to find info on the HID output features. Not much available in the docs so far. So, it looks like it's going to be interesting to noodle it out.

How can you tell the pioneers? They're the ones with the arrows in their backs.

What additional information are you looking for?

Currently, the output is just driving a pin high (3.3V) or low from the MSP430. Essentially, you can set it in WPILib, and it will get transferred to the HID device on the following USB poll cycle (every 20ms). I'll get my software cohort to elaborate a bit more for you guys on this.

The max a single pin can source is 10mA, and the device total is 100mA.

When I made the example panels on the wiki, I just used the indicator pins output to directly drive the LEDs. No problems so far.

[wt200999]

Originally Posted by taichichuan

In the mean time, I'm trying to find info on the HID output features. Not much available in the docs so far. So, it looks like it's going to be interesting to noodle it out.

On the robot side I have only had a chance to work with the LabVIEW WPILib API, but I assume it is similar in both Java and C++. The idea is you pass a boolean array to WPI_JoystickSetOutput.vi which is sent to the LaunchPad, which then sets/clears the appropriate indicator. See attached from the LabVIEW context help (you can ignore the rumble outputs).

If you load one of the three default firmware images it becomes straight forward to set/clear the indicator outputs using the API, which you can then use to drive an LED or other indicator.

In addition, we are working on the documentation for the source code provided on our github page, beyond what is commented in the code (including setup instructions). So if you want to do something else with the output data outside of what the 3 preconfigured binaries provide, you can.

[Joe Ross]

Originally Posted by taichichuan

In the mean time, I'm trying to find info on the HID output features. Not much available in the docs so far.:

Look in the Joystick class, SetOutput and SetOutputs.

[taichichuan]

Originally Posted by Joe Ross

Look in the Joystick class, SetOutput and SetOutputs.

Thanks! I'll take a look at that.