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I am using a hardware (HSERIN/HSEROUT) and software (SERIN2/SEROUT2) on a single chip. I want to use the the DEFINE CHAR_PACING, does this change the pacing for both HSER and SER? i have the...

Thanks for all the help. I understand fosc/4, but i am not sure Serout2 or serin2 uses that. I define the osc speed up top. I have to use 10000000 to get 19200 or 38400 to work with no issue. ...

this is what i come up with the varrious values to set the baud value
No Parity, True Parity, True No Parity, Inverted Parity, Inverted
115200 -11 8181 16373 ...

the forumula they have in the maual is (1000000/baud)-20, which results in -11. I tried 23 with no luck, or atlest the motor controller I was communicating with acts dumb. works fine with...

I am trying to get a 16F777 with a 20MHz external oscillator running at 115200 baud. There is no parity and it is true. My math for those conditions gives me -11.

I need to use the hardware serial...

here is the entire front end...




@ __config _CONFIG1, _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_ON & _LVP_OFF & _CP_OFF

OSCCON = $70 'sets the oscillator speed
DEFINE OSC 8 'Oscillator...

I have finished puting the original non interupt code into the new program. any reason why PORTB.2 is all of a sudden reading high all the time. I can ground it out with a switch and it will not...

In order to get in and out quick I will need to use another timer I guess. I need to fire off serries of 8 pulses every 22ms. The high pulses will range from 400us to 1800us with a 400uslow...

cool. I had it in the begining, did not have it in the interupt. Firing every 22ms on the scope.

So, this will not mess up anything as far as I2C or serial? or is that dependent on what I do...

OK. Thanks, Compiles now and have a blinking LED. Back to the timing... Sorry I am so dense with this.

How do I go about setting the timer for prescale of 1 and a peload of 21537

I have...

...perhaps the errors mean something to those who know, but I am not smart enough to know (hence the reason I am for asking for help). A little more guidance would be appreciated. am I suposed to...

I am not sure if I shoudl reply to this thread or the main interupt thread.

Anyways, I am getting errors when compiling. It looks like its all with the includes files.

I have attached a...

OK. This looks good. Thanks.

I think the overkill blinking light is the right for me to use. I am unlear what to change to get timer 1 to fire off every 22ms.

I assume it starts with...

I am using a PIC18F887 with the internal oscilator set @ 8MHz. I have a subroutine I need to fire off at a routine basis (nominally every 22ms although I want it a constant that I can tune). Can...

well, good thing I just wasted too many hours staring at the software and wasted everyone's time on the post. Went and checked the hardware for shorts and continuity. Helps if you solder the clk...

I have been using the 18F2220 for I2C for dozens of projects and have never had an issue. Either I have been getting away with something for long time or something has changed with the latest lot of...

I think its 2.50A PBPro

How do I take a HEX value from -255 to 255 and convert it to a byte from 0 to 255 with another bit of 0 or -1 for the sign? so HEX 81 (-127) is 127 with a sign of 1 and HEX 7F (+127) is 127 with a...

BTW, I don't need to recover the lost data, just reset. Its not a big deal to miss loop of data here and there. THe issue I have is once it starts erroring it kinda cascades and keeps getting worse...

OK. I have it working pretty good with the dummy receives after each tx to catch the junk and prevent overun. Every once in a while though it gets caught up in itself probably from missing a...

Is there a way to reset the OERR flag other than serin2?

does this doe anything. I can find very little info on it, but I saw it in the appendix of the picbasic book. I know the same thing exists...

Hi. I tried multiple waits (didn't know you could do this). it works a little better, but still not perfect.

I set it up to snoop the data and post it on hyperterminal.

This is what I get...

unfortunately no, I have tried a couple things and it get too complicated. Hserial has can't be inverted and I am going through a level converter. Its on a premade PCB so i really don't want to...

Hi. I am trying to read poll then read the data off a RoboteQ motor controller. I can not use the hardware UART, its already being used for the main com. I have it working OK, its just not...

It helps if you have your analog souce attached to the correct pin...

Sorry for the unessary post, I guess I just needed to step away from it a while to see the obvious.