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Recent Forum Posts

Hserout questions

Hi All

Attempting to get some serial communication working with a 16f628 (4Meg Xtal) My defines are as below :-

DEFINE OSC 4
DEFINE HSER_TXSTA 24h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD...
andybarrett1 Today, 11:34

Re: Stable Adc Reading Routine

That code gets 16 samples not 10. You just have to limit the samples from 16 to 5. But this is not very useful. Leave it as it is for ironing out the noise or parasites in the signal.

Ioannis
Ioannis Yesterday, 21:50

Re: Stable Adc Reading Routine

Hi ! Me, again :)
Please, how to addapt Melanie's great pice of code (post#^6) for only 5 readed values, not 10 ?
Thanks !
fratello Yesterday, 14:56

Re: ADC input signal filter selection

I prefer the inductor on the +Vdd side.

Anyway, I'd suggest get 10 or more samples in an array, then sort them in order and keep the middle 5 values.

Then add them together and divide by 5.
...
Ioannis - 16th February 2019, 22:05

Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

Yes, the LATD.1 = 1 has to be set as there is no telling what state it was left in after the preceding OWOUT command.
Dave - 13th February 2019, 15:08

Re: Need to drive 40 pins on variable change, is there a way to do it in elegant way?

won't statement HIGH DIGIT1(2) set HIGH the port number, stored in DIGIT1(2) ?
CuriousOne - 13th February 2019, 14:29

Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

Excellent!
now it works!

so it was latd/trisd issue as I guess...
CuriousOne - 13th February 2019, 08:57

Re: Serin2 data bits

Within PBP you can manually manipulate SFRs, read and write to UART registers, etc. If the PIC you are using has EEPROM, you can set up an array of sequential EEPROM addresses with SFR settings. It...
mpgmike - 12th February 2019, 16:34

Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

Try this routine:

OWOUT DQD, 1, [$CC, $44] ' Start temperature conversion
LATD.1=1 SET PIN STATE TO HIGH
TRISD.1 = 0 'MAKE PIN AN OUTPUT WITH DEFAULT STATE HIGH
pause 760 'ADD AN EXTRA 10...
Dave - 12th February 2019, 16:15

Re: It is Y2K19 but DS18B20PAR+ Returns either 127 or 85 depending on resistor value.

CuriousOne, How many times are you letting the program cycle? Here is the output from my terminal after I reset the processor power. Notice the "85" as the first reading from the DS18B20-PAR. This...
Dave - 12th February 2019, 16:02

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