How do I discern Maidenhead Locator from GPS lat long info.

[astanapane]

Could you tell me if it is a good choise continuing this project with PIC16f887 i/p?

[richard]

Could you tell me if it is a good choise continuing this project with PIC16f887

its basically the same very limited chip you are presently using with a few more pins.
if you are serious in wanting to calculate maidenhead then no its a poor choice.
at least get something like 16f18326 ,16f18875 or better still a pic18 chip
I like pic18f26k42 [if you have pbp3.1] or a pic18f26k22 with pbp3.0 for this sort of project

[astanapane]

Hi Richard,

thanks a lot again for your reply. I'm trying to use a chip that i can program with pickit2 as i dont want to spend any money for the pickit 3.

I'm planning to purchase the PBP3.1 software, than spend for pickit3 hardware. Im happy with pickit 2, and a close supported device as far as i see is the pic18f26k20.

At the moment in stock i have the pic18f4550, pic16f1939. What is the feature of the pic we are looking for. The CPU SPEED (8bit or 16bit...), the SRAM, timers?

[richard]

What is the feature of the pic we are looking for. The CPU SPEED (8bit or 16bit...), the SRAM, timers?

its not my project I don't know what you have planned but generally speaking if you are dealing with parsing strings from a serial stream , more sram is better ,the possibility of more speed is always better. make sure there is plenty of flash space to hold the program. if its a one off project get the best chip with enough pins and features required .
if you are going to do large amounts of and/or complex math then pic18's with a hardware multiplier can increase speed and
reduce code size

pk2 will program 18fk22 series , once you have used a chip with pps there is no going back. the k42 series chips leave the others in the dust

[astanapane]

thanks for the info once again. Is not a place to analyze it more, and im the one i need to understand better the differences of the chip's performance.

Last question based on the pps, do you mean pulse per second? OK just checked this, Peripheral pin select

I've also checked the supported devices from PICkit2 for k22 series : PIC18F13K22 PIC18LF13K22 PIC18F14K22 PIC18LF14K22

No K42 is supported.

[richard]

your pk2 device list file is out of date, there are many more k22 chips supported .

[astanapane]

ooops i dint know.

i tried many times to check if there is a newer version and didnt find any that 2.61 with the devicefile 1.61.

I will check again. thanks for the update really i didnt know it.