Search found 9 matches

I am building a "GPS box" that will only open when brought to a known set location. If I want to get to within +/- 300 ft of a location, how many minutes is that?

I am writing a program that sends a message out the serial port at 115200 baud.
That message I send out causes "the other side" to respond back.
I am using ISR int_rda to receive chars and ...

Thanks PCM_PROGRAMMER.

My circuit did indeed need the pull-up resistors.
I threw a couple of 4.6 k ohms in there and bingo! No more stuck at the write call.

Thanks again.

I am using the following circuit. The RTC is hooked up to a 16F877A.

http://webpages.charter.net/rret/RTC8593/RTC-PCF8593-schematic2.jpg

RC2 is !RESET
RC3 is SCL
RC4 is SDA

The following c ...

thanks, i really missed that info! Embarassed

thanks everyone for your help.

I ended up doing this, as i don't need to know if the button is up, just how long it was down.
(constructive criticism is welcome!)

// external interrupt when but ...

I'm trying to talk to a NXP PCF8593 RTC chip.

int1 ack;

output_float(PCF8593_SCL);
output_float(PCF8593_SDA);
//pulse NOTRESET-
output_low(PCF8593_NOTRESET);
output_h ...

to pcm-programmer-
thanks - i'll give that a try. i didnt need hints, i needed code, so thanks.
my only concern is that i will be receiving chars from the serial port at a high rate and i'm concer ...

I am trying to find CCS code that when a pushbutton is pushed an interrupt service routine is called. That ISR can then distinquish whether or not the button was pushed momentarily or was held down f ...