Sending IR from a transmitter,

Projects Programming
1

Hi, I reviewed the serial tutorial. I am sending IR from a transmitter,
LEFT, RIGHT, FORWARD and REVERSE commands. At the RX side I need to parse these into case statements (or is there a better way) to set the duty cycle of 2 separate PWM channels.

Logic combination:
Forward
Reverse
Forward + right
Forward +left
Reverse + right
Reverse + left
Stop

If I set up the code with < FWD REV RIGHT LEFT >, that is 6 bytes. Since IR is slow it can take up to 50ms (rough calc, not sure if this is correct). This is too long to grab an entire frame then sort through it via logic. Would it be less laggy if I delt with each byte as it came in. Knowing that the byte length is fixed at < 4bytes > , or 6 total in terms of time consumed sending.

Any help would be appreciated.

Receiving Byte Array over serial
2

@macgman2000

Topic split from another topic. Please do not add your own questions to the end of other people's topics.

Could you take a few moments to Learn How To Use The Forum

It will help you get the best out of the forum in the future.

Thank you.

3

Your problem statement is quite imprecise.

makes little sense to me. Do you control what the IR device is sending? Are you receiving single characters for each, plus prefix and suffix characters? It's not clear.

4

I was going to send 0-255 values from each of the bytes I am sending corresponding to
FWD, REV, Right and Left. Seems impractical once I calculated out the latency. This is for a two motor vehicle. I think the better way is to update hardcoded PWM at the vehicle since the TX is sending button presses. I just didn't want to tear the vehicle apart to get to the USB jack.

5

sounds like you've decided your path forward. Please mark the topic solved, if that's the case.

6

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