Pic programmer

Design Concepts
1

hi!

I found a new PIC18f programmer :

http://members.naspa.net/djs/software/pic18f.html

which is a plug on the parallel port… And the woftware works under linux.

I think I can use it without any care?

thanks!

2

hi!

I found a new PIC18f programmer :

http://members.naspa.net/djs/software/pic18f.html

which is a plug on the parallel port… And the woftware works under linux.

I think I can use it without any care?

thanks!

3

Hi Pilo,

the problem with this programmer is, that it uses the low-voltage programming mode and therefore allocates pin RB5, which - once the mode has been enabled - cannot be used for any other purpose anymore. Consequentialy you cannot drive a LCD module, which requires RB5 as data pin.

Best Regards, Thorsten.

4

Hi Pilo,

the problem with this programmer is, that it uses the low-voltage programming mode and therefore allocates pin RB5, which - once the mode has been enabled - cannot be used for any other purpose anymore. Consequentialy you cannot drive a LCD module, which requires RB5 as data pin.

Best Regards, Thorsten.

5

hum… But, I put the pic on the programmer, then put it in the midibox… Because I use RB5 in the programmaing sequence then i can’t use it anymore??? Maybe I should download the PIC18F datasheet…

I want to make a stand-alone programmer (not in the midibox)… ???

6

hum… But, I put the pic on the programmer, then put it in the midibox… Because I use RB5 in the programmaing sequence then i can’t use it anymore??? Maybe I should download the PIC18F datasheet…

I want to make a stand-alone programmer (not in the midibox)… ???

7

Hi,

Because I use RB5 in the programmaing sequence then i can’t use it anymore??!!??

yes!

From the PIC18F452 datasheet

The High Voltage Programming mode is always available, regardless of the state of the LVP bit, by applying VIHH to the MCLR# pin

While in low voltage ICSP mode, the RB5 pin can no longer be used as a general purpose I/O pin.

Best Regards, Thorsten.

8

Hi,

Because I use RB5 in the programmaing sequence then i can’t use it anymore??!!??

yes!

From the PIC18F452 datasheet

The High Voltage Programming mode is always available, regardless of the state of the LVP bit, by applying VIHH to the MCLR# pin

While in low voltage ICSP mode, the RB5 pin can no longer be used as a general purpose I/O pin.

Best Regards, Thorsten.