Jump to content

JDM & pic16f877


Recommended Posts

Guest ignamato
Posted

I´ve tried everithing but I can´t program it. I only can read 3FFF 3FFF....

any idea? ???

I also tried to build a parallel programmer and have similar results. I´m thinking the chip have a failure.

thanks

Nacho

Posted

Hi Nacho,

if verify fails with both programmers, possibly the10k pull-down resistor is not connected to pin RB3?

Best Regards, Thorsten.

Guest ignamato
Posted

I follow the same board from the page module. I´ve also tried to connect it to GND and same results. How can I check pic is working?

Guest ignamato
Posted

What´s the configuration to configure pic16f877 for the MidiPlus with 16 pots and 2 button configuration? (osilator, fuses)

Posted

This information is embedded in the .hex file, so that the programmer should regognize it automatically. However, here a snapshot with the config settings which are valid for every PIC16F based MIDIbox project:

icprog_conf2.gif

Best Regards, Thorsten.

Guest ignamato
Posted

thanks!! ;D

Another question, can I programm the PIC with a low voltage programmer???????

bye!

Posted

No, this requires a special programmer and special software --- and the LVP allocates pin RB3 so that it cannot be used by the firmware.

Best Regards, Thorsten.

Guest ignamato
Posted

Still not working  :'(

I send you a list with some of the parts i´m using, maybe something is wrong

diode zener 9.1v (diode 8.7v)

2 transistor 2n3904 (bc547)

cap 100uf16v and 22u25v

Guest ignamato
Posted

That was the problem!!!!! :o :o

:) I´m going to test it now.

1º Do you know if this error can damage the pic???.

2º Can I use a 9.1 diode with out any problem??

thanksssss

Guest ignamato
Posted

It workssss ;D, I can´t believe it!! thanks

I only have a little problemm, when reading sometimes I get all ones, and in othe moment I read the code I write in the chip.

bye!

Guest ignamato
Posted

It workssss , I can´t believe it!! thanks

I only have a little problemm, when reading sometimes I get all ones, and in othe moment I read the code I write in the chip.

bye!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...