Install and get used to Mplab. That will solve most of your problems. George ----- Original Message ----- From: "Dan Devine" To: Sent: Sunday, February 15, 2004 6:49 PM Subject: Re: [PIC]: PIC18F8720 insuccesses > I've gotten this chip to run OK at 20mHz with a generic Digikey > resonator. Make sure you have your oscillator configured correctly. > > Can you single step the code?...Try setting breakpoints...What appears > in the watch windows as you move through... > > I've had some functional problems when I pick the wrong oscillator type, > looks like it programs but then the other tests fail... > Try that, it's easy and direct... > > > DD > > On Sun, 2004-02-15 at 07:16, No Religion wrote: > > Hi all, > > I'm really losing my mind now, been fighting with this for 8 days > > now, I give up. I hope you can tell me what's wrong in my setup. :( > > > > I self made a PIC18F8720 development board, and it seems to work, > > because I can program the chip with no problems. > > > > I'm using 100 nF SMD capacitors near every Vdd (including AVdd), > > and an integrated clock oscillator. It's a 24 MHz CMOS part by > > Epson. > > > > I wrote a simple test program which is supposed to set all ports > > to output (via the TRISx registers), and then put all of them to > > the "HIGH" logic level (via the PORTx registers). > > > > This is my code, as shown by IC-Prog: > > 0000: D00F 0000 0000 0000 0000 0000 0000 0000 > > 0008: 0000 0000 0000 0000 0000 0000 0000 0000 > > 0010: 0000 0E00 6E92 6E93 6E94 6E95 6E96 6E97 > > 0018: 6E98 6E99 6E9A 0000 0000 0000 0000 0000 > > 0020: 0EFF 6E80 6E81 6E82 6E83 6E84 6E85 6E86 > > 0028: 6E87 6E88 0000 0000 0000 0000 0000 0000 > > 0030: D7DE 0000 0000 0000 0000 0000 0000 0000 > > > > And this is the configuration: > > Config1 = 2500 > > Config2 = 000F > > Config3 = 0080 > > Config4 = 0081 > > Config5 = C0FF > > Config6 = E0FF > > Config7 = 40FF > > ID Value = 0123456789ABCDEF > > > > Is there anything wrong in my machine code (for this quick test > > I don't want to nor I think I need to install MP-Lab.. I tried > > it and hated it, I will write my own source level debugger and > > assembler and release it to the PD after I'm finished). > > > > Is the reset vector ok? It's supposed to be a BRA to 0010, where > > it will meet a NOP (no reason in particular) and then the value > > 00 will be moved to W, which in turn will be moved to all the > > TRISx registers. Then W will be loaded with FF, which will be > > copied to all the PORTx registers. Finally (through some NOPs, > > again, just to leave some space for inserting other code for > > experiments) there's supposed to be a final BRA back to 0010. > > Addresses don't represent bytes, but instruction words. > > > > I know it's tedious to go through machine code.. but if you're > > kind enough, and if the code or the configuration is wrong, please, > > can you point me to the errors? > > > > Or, in alternative, could some kind soul post a small .HEX file > > with a demo program that just turns some port pins ON and some > > others OFF, just to see if my problem lies in my hardware or in > > my code? > > > > I hope to get your valuable help.. I really don't know what to > > experiment else. > > > > Kindest regards, > > Mike > > > > -- > > http://www.piclist.com hint: To leave the PICList > > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads