# Which is the more suitable way to send data between two launchpads?

**URL:** <https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950>\
**Category:** TI C2000\
**Tags:** plecs-coder, c2000\
**Created:** [January 25, 2021, 1:32pm UTC](https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950 "2021-01-25T13:32:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![efrain\_ibaceta](https://avatars.discourse-cdn.com/v4/letter/e/6de8d8/32.png) [@efrain\_ibaceta](https://forum.plexim.com/u/efrain_ibaceta)\
**Post date:** [January 25, 2021, 1:32pm UTC](https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950/1 "2021-01-25T13:32:06Z")

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HI,

I wanna share float data between two launchpads for I/O capability expansion purposes to complete robust control. As shown in the figure below, you can note that a data flow of 3 float data (vr,vt,vs) from the first control to DSP 2; while this latter transfer 9 float data. you have another way to fulfil that objective (CAN, SPI)? or which way is suitable for you?

 ![image (1).png](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/c648f8614daa3cee142f4c28314e9e1a65ff3b8b.png)

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**Author:** ![shichenseu](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@shichenseu](https://forum.plexim.com/u/shichenseu)\
**Post date:** [January 26, 2021, 2:59am UTC](https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950/2 "2021-01-26T02:59:03Z")

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I did a test of CAN communiction yesterday, however from the external mode I still cannot clearly observe the exact numbers of float data from the receiver, maybe it’s a matter of 20HZ sample rate from the computer and launchpad…

I reckon that changing baud rate can help???

Since can communication is widely used in industrial application,maybe it’s better？

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**Author:** ![efrain\_ibaceta](https://avatars.discourse-cdn.com/v4/letter/e/6de8d8/32.png) [@efrain\_ibaceta](https://forum.plexim.com/u/efrain_ibaceta)\
**Post date:** [January 26, 2021, 7:57am UTC](https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950/3 "2021-01-26T07:57:23Z")

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did you try with 4 - 8 float data by CAN BUS?

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**Author:** ![shichenseu](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@shichenseu](https://forum.plexim.com/u/shichenseu)\
**Post date:** [January 26, 2021, 8:00am UTC](https://forum.plexim.com/t/which-is-the-more-suitable-way-to-send-data-between-two-launchpads/950/4 "2021-01-26T08:00:02Z")

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I just tried the example from another forum demo…I just tried the demo by the specialist