Search found 22 matches

Sorry, forgot to mention one thing in my previous post. The best way to time your pulses is with the timer 0 interrupt (RTCC). That way, the display doesn't momentarily flicker when other interrupts ...

Thomas Blake, would you care to elaborate on the "multiplexing" of the display? Maybe some code or something so that I actually have some idea what you are talking about :-)

What exactly does a "lo ...

I agree that a packaged DC-DC converter would be the cleanest solution, as long as it's truly packaged. If you make it out of parts it's more fun but you may have to do a lot more development to ensu ...

The preceding comment was mine. I guess the "log me on each time" button is broken. Or something.

tcb

You're right! They call it mini-RISC and that's why I didn't recognize it at first.

Thanks!

You can turn quadrature signals into tach and true direction easily enough with a flip flop. The real problem with mechanical encoders is that switch bounce can break the quadrature relationship. In ...

Sorry, I do not have a schematic. What I am doing is driving two 7447 chips which in turn handle the output to the 7 segment displays. The annodes of the LEDs are hooked to my 5 volt source and ...

Not specifically CCS - but - I've been thinking about canning all separate MCUs in my future designs and using the Xilinx MicroBlaze core instead. This is partly to be able to program everything at o ...

Hi,

I'm looking for a copy (free or otherwise) of the latest header file for the 12F675. I have PCM v. 3.092, which supports the chip, but my copy of the header file omits a lot of constants.

( ...

Now I want it to save only the modified bytes, but it doesnt work. Only a test to verify if the data is different was added.

Why not use the CCS functions? Using CCS functions,

if (read_eeprom ...

I've used the 9th bit for RS-485 using the PIC16F873:

#BYTE rcsta_copy = 0x0018
#BIT rx_bit_9 = rcsta_copy.0

Originally I did have a problem with using the 16F873.h file macros with PCM 3.092, ...

Microchip has an emulation advantage over some other types because they make MCU package versions that bond out the internal signals. So a hardware emulator can be pretty cheap.

I use the Clearvie ...

If you happen to be on Mac, use Douglas Layout Professional. I just finished an 8-layer card with about 950 I/O lines, using the 1mm BGA packages that Xilinx insists on using for their large arrays. ...

Hi, Got 9 GPS15-W Garmin GPS engines, I have has these sat around for ages, they all work and if nobody here is intrested I will put them on Ebay.

If you are intrested, leave a message and I'll res ...

For the record, a lot of i2c slave devices use the NAK as an indication that a read operation is complete. So while this is OK for 2 PICs it may be teeth-gnashing if you ever work with a chip like (s ...