16F690 or whatever SEROUT to PC

[xnihilo]

if the distance is not to far, maybe less than 10 feet a 232 chip is not need . Just make sure you are using inverted mode for the serial.

Hello,

What is the output of the pic? TTL or RS232?
It should be less than 10 feet.

What is exactly the inverted mode?
I should be using N9200 instead of T9200 then?

[mister_e]

N9600 would work IF AND ONLY IF the internal OSC is accurate enough.

High likely i would use DEBUG instead, much more, i would use HSEROUT and a max232, max233 or whatever else RS232 driver.

You can reduce the in serie resistor if you want.

[mackrackit]

What is the output of the pic? TTL or RS232?

RS232

What is exactly the inverted mode?

Just as the name implies. The signal is inverted. Up is down and down is up.

HSEROUT is always TRUE. So the MAX232 or equal is needed for this.

I agree with Steve, get an external OSC and save your headache for someplace else.

[mister_e]

AND as you use the bit banging solution, you should make sure your Serial pin idle to the right level before sending any data.

true idle high
Inverted idle low.

[xnihilo]

I am using a 16F690 which has an USART, cool, but all pins are used, not cool... I can use RA5 before the program uses it for communicating with another pic.

Using Hserout would be nice and adding an external osc too but I don't have the pins available for that.

Well, so I am confused.

The only pin I have is RA5, what should I do...
Use SEROUT, right?
And use a max232 (in this case what benefit to I have if the pic is already outputing RSR232 level signal?).
Whith what setting for SEROUT if not N9200?
And can I or can I not use an external OSC?

[mackrackit]

The only pin I have is RA5, what should I do...

Re-design your project.

Use SEROUT, right?

Or DEBUG or SEROUT2

And use a max232 (in this case what benefit to I have if the pic is already outputing RSR232 level signal?).

In your case there is not a benefit. If you were sending a longer distance or using HSEROUT then you would need it.

Whith what setting for SEROUT if not N9200?

SEROUT -- N9600
SEROUT2 ---16468
DEBUGE --- DEFINE DEBUG_MODE 1

And can I or can I not use an external OSC?

If you mean internal...Maybe.
Temperature change can cause the internal to vary. It may work on the bench but not in a finished application.

[xnihilo]

The project is still my lasergame equipment.

When the "body" module is powered up, it will send 70 bytes to the PC (scores).
It will not have the time to heat too much do you think I still can use internal OSC at 8MHz, without a MAX232, with serout, N9600, a 1k inline resistor between pic RA5 and PC pin 2? Redesigning the project is unfortunately almost impossible now.

[mackrackit]

All I can say is to give it a try. Maybe in your case it will not be to much of a problem if communications do not work every time. Just try sending the score again??

The MAX232 will not help you.

If you find it works part of the time, you may try 2400 baud. Sometimes a slower signal is more reliable and more tolerant.

I am not sure, the internal on your chip might be able to be calibrated. Some one else will have to help you if it can or needs to be.