I bought some pic12f675 and i am trying to program it using an arduino (for testing purposes, I was trying to write a simple blinking led code, I tried both my code hex compiled and another that I got on internet).
I looked around and found some pic18f or pic16f sketches, but I used this one for pic12f (the code was made for PIC12F508, which is 12bit, and my pic is PIC12F675, which is 14-bit): http://www.reenigne.org/blog/a-pic12-programmer-from-an-arduino/
The only change I made was to use a 12V battery connected to a TIP102 transistor for the 12V input of the PIC.
One of the hex files I have tried to upload was the one below. I got the hex file general idea: size, address, type, data, checksum. The software I downloaded rejects this hex if I keep the last but one line (:02400E00C43FAD). It says "Address in hex file out of range.". I believe the reason I get this error is because the software was made for 12-bit and the code for 14-bit microcontroller.
:100000000428FF3FFF3FFF3F03138316850107309E :100010008312990083169F01FF30831285000330FD :10002000DC00FF30DB00FF30DA00DC0B18281F2873 :10003000DB0B1B281E28DA0B1B28182815288C30F0 :10004000DB00FF30DA00DB0B26282928DA0B262814 :100050002328A130DA00DA0B2B28000085010330B9 :10006000DC00FF30DB00FF30DA00DC0B38283F28F3 :10007000DB0B3B283E28DA0B3B28382835288C3010 :10008000DB00FF30DA00DB0B46284928DA0B462874 :100090004328A130DA00DA0B4B2800000C284F2847 :02400E00C43FAD :00000001FF
With all that said, assuming that I am correct, I am trying to modify the sofware in arduino to support 14-bit controller (my pic12f675).
And my status on this task: 0%. (almost)
In the arduino source code, which you can find in the first link, then click on github link, file: programmer_c.c. (cant post more than 2 links)
Check the comments at lines 27 to 32.
// Load Data for Program Memory x x 0 0 1 0 (0 data(14) 0) // Read Data from Program Memory x x 0 1 0 0 (0 data(14) 0) // Increment Address x x 0 1 1 0 // Begin Programming x x 1 0 0 0 // End Programming x x 1 1 1 0 // Bulk Erase Program Memory x x 1 0 0 1
And here is pic12f675 programming specs (http://ww1.microchip.com/downloads/en/DeviceDoc/41191D.pdf)
The only changes I found was on "Begin Programming" and "End Programming", which was supposed to be:
// Begin Programming 0 0 1 0 0 0 // End Programming 0 0 1 0 1 0
Im not sure how to change it on code yet, but I will find. Even if I fix this, will not resolve the address problem.
If anybody has thoughts or want to help on this port, I would appreciate. Thank you.