27c256 | 4K81H | 68HC11A1 | 68HC11P1 | 68hc24 | 68HC711E9 | 68HC811 | 8255 | A2D | ADC | ADC12138 | Am85C30 | BRCLR | Buffalo | CMOS | EEPROM | EPROM | Ethernet | EVB | EVBU | HC11E1 | HC11E9 | HC711E9 | Horray | ImageCraft | IRQ | Keypad | LCD | MC68HC11D0FN | MC68HC11E1CFU3 | MC68HC11F1 | MC68HC711E9 | MC68HC711E9CFN2 | Microcore11 | Microstamp11 | Minikit | NVRAM | PSD | PSD8xx | PSD9xx | PT1000 | RS232 | RTS | RXD | SPI | SRAM | TXD | Watchdogs | XIRQ

I am attempting to program the CONFIG register in order to enable COP. My initial attempts I discovered were wrong because I was attempting to follow a procedure for the wrong version of 68HC11, namely an A-series part. What I have is an E-series part: MC68HC11E1CFN2. I discovered my mistake when I read EB193 from Freescale which describes the "correct" procedure. I haven't been able to make any progress using the sample code provided. I HAVE been "successful" in making one cpu non-functional, and I'd rather not do that again. I have a limited supply of cpu's at the moment :) I would appreciate any assistance I can get. Thank you!

Re: programming the CONFIG register
Re: programming the CONFIG register
Re: programming the CONFIG register
Re: programming the CONFIG register
Re: programming the CONFIG register
Re: programming the CONFIG register


(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Steve, Before yo move any further, I would suggest that you take a look at the MC68HC11E reference guide and read it throughly. I have uploaded this file to this groups "files" section of this group. Reading over this guide, for myself, I was able to better understand the innerworkings of the 68HC11. As for your problem, if you could be a bit more specific on what section of the CONFIG register you are trying to manipulate, then we would posses the tools to better help you. Remember, you must write to the CONFIG register within the first 64 clock cycles or the MCU will disregard you instructions, and you can only write to it once in your program (I think). Also, make sure that your connection between you computer and the MCU is OK. Are you by chance using the Technological Arts board? If so, then load the DEMO program that came with the board--if you don't have it, then you can download it from their website--to ensure that the MCU is properly configured to be programed. If you are not using the Technological Arts board, then write a simple routine that will blink a light, or something, in order to let you know that your connection, and your programming configuration is operating properly. Take a step back for a bit and think it through, you may be missing something so simple--I think we have all done this a time or two. Anyhow, do this stuff and see how it works out, check back here because there are some real experts here that may have further suggestions for you. If what I mention does not work for you, then, as I mentioned before, be specific in your question (i.e. I am trying to initialize the A/D converter and it is not working). I hope this helps you a bit. LF Steve Tabler <> wrote: I am attempting to program the CONFIG register in order to enable COP. My initial attempts I discovered were wrong because I was attempting to follow a procedure for the wrong version of 68HC11, namely an A-series part. What I have is an E-series part: MC68HC11E1CFN2. I discovered my mistake when I read EB193 from Freescale which describes the "correct" procedure. I haven't been able to make any progress using the sample code provided. I HAVE been "successful" in making one cpu non-functional, and I'd rather not do that again. I have a limited supply of cpu's at the moment :) I would appreciate any assistance I can get. Thank you! --------------------------------- Yahoo! Groups Links To ---------------------------------

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Steve -- A couple of things to keep in mind --- 1. The "CONFIG" register is a complex structure consisting of a non-volatile register (actually an EEPROM cell), a "working" register (a RAM cell) and a RESET mechanism that copies the non-volatile register into the working register at RESET time. 2. To update the CONFIG register you must use EEPROM programming techniques. There is no way to confirm that your update was successful until _after_ you initiate a RESET because all attempts to read-back the change will simply read back the contents of the working register which will continue to hold the _old_ contents of CONFIG until the next RESET. You should consider obtaining a copy of John Beattie's Jbug11 debugger for the HC11. It contains a mechanism for maintaining CONFIG that understands the above considerations. It is also an excellent replacement for PCBUG11 without the built in CPU speed limitation problems. See -- http://freespace.virgin.net/john.beatty/index.html Finally, for definitive information on using the 'E' family parts, you should obtain a copy of the MC68HC11 Technical Data Manual for the E series. Best wishes, Bob Smith --- Avoid computer viruses, Practice safe hex --- -- Specializing in small, cost effective embedded control systems -- http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith Smith Machine Works, Inc. 9900 Lumlay Road Richmond, VA 23236 804/745-2608 ----- Original Message ----- From: "Steve Tabler" <> To: <> Sent: Sunday, January 30, 2005 12:39 AM Subject: [m68HC11] programming the CONFIG register > > I am attempting to program the CONFIG register in order to enable > COP. My initial attempts I discovered were wrong because I was > attempting to follow a procedure for the wrong version of 68HC11, > namely an A-series part. What I have is an E-series part: > MC68HC11E1CFN2. > > I discovered my mistake when I read EB193 from Freescale which > describes the "correct" procedure. I haven't been able to make any > progress using the sample code provided. I HAVE been "successful" in > making one cpu non-functional, and I'd rather not do that again. I > have a limited supply of cpu's at the moment :) > > I would appreciate any assistance I can get. > Thank you! > > -------------------------------------------------------------------------- ------ > Yahoo! Groups Links > > a.. To

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Here's an example taken from an actual program (used on an E0 and E1). It enables COP only if it finds it disabled. First time your power up with this code, it will enable the COP in the CONFIG register. Then you must cycle power and from then on it will work correctly with COP enabled. (I had hoped for a method to automatically reset after programming but the usual CMF reset method wouldn't work immediately after this. Not even a press of the reset button would work. Only power cycling did. Haven't figured out exactly what causes this undocumented behavior.) Look up the symbols in your E reference. ------------ Reset clr XINIT ;REGS and RAM at zero page lds #STACKTOP brclr CONFIG,#NOCOP.,Start ;COP already enabled, skip ;enable COP first time this runs bclr BPROT,#PTCON. ;enable CONFIG programming ;first, erase CONFIG register lda #$16 ;BYTE = 1, ERASE = 1, EELAT = sta PPROG sta CONFIG ;any data to this address will erase it inc PPROG ;Turn on programming voltage ldx #10 os fDelayMS ;Delay 10 msec clr PPROG ;Turn off programming voltage ;next, rewrite CONFIG register with required value lda #$02 ;EELAT = 1 sta PPROG ;Set EELAT bit lda #NOSEC.|EEON. ;value to program CONFIG with sta CONFIG ;save data to address inc PPROG ;Turn on programming voltage ldx #10 os fDelayMS ;Delay 10 msec clr PPROG ;Turn off programming voltage bra * ;just hang, wait for manual power-on reset Start ... ;normal beginning of your code ------------ Hope it helps. ----- Original Message ----- From: "Steve Tabler" <> To: < > I am attempting to program the CONFIG register in order to enable > COP. My initial attempts I discovered were wrong because I was > attempting to follow a procedure for the wrong version of 68HC11, > namely an A-series part. What I have is an E-series part: > MC68HC11E1CFN2. > I would appreciate any assistance I can get.

Re: programming the CONFIG register
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Thanks, Tony! This looks like what I'm looking for. To Bob and Bart: Thank you for your suggestions, too. I'll post some more specifics in a few days. What I CAN tell you for now, though, is that the board I am using is an old-model board from New Micros, an NMIX-0020 (I think). Much of the programming is being done with the ICC V6 compiler. I have had to edit and reassemble the default start-up file to handle the programming of the BPROT register during the first 64 clock cycles. Steve At 06:24 PM 1/30/2005 +0200, you wrote: >Here's an example taken from an actual program (used on an E0 and E1). It >enables COP only if it finds it disabled. > >First time your power up with this code, it will enable the COP in the >CONFIG register. Then you must cycle power and from then on it will work >correctly with COP enabled. > >(I had hoped for a method to automatically reset after programming but the >usual CMF reset method wouldn't work immediately after this. Not even a >press of the reset button would work. Only power cycling did. Haven't >figured out exactly what causes this undocumented behavior.) > >Look up the symbols in your E reference.

(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Thanks, Tony! This looks like what I'm looking for. I'll let you know how I come out with things in a few days. To Bob and Bart: Thank you for your suggestions, too. I'll post some more specifics in a few days. What I CAN tell you for now, though, is that the board I am using is an old-model board from New Micros, an NMIX-0020 (I think). Much of the programming is being done with the ICC V6 compiler. I have had to edit and reassemble the default start-up file to handle the programming of the BPROT register during the first 64 clock cycles. Also, I DID consult the MC68HC11E reference guide. I hesitated to post the programming code I was using, mostly because it is in C. I may give JBUG11 a try, I have obtained it. Support over at New Micros point me to something called HCLOAD, but it didn't work, and there's no way to email the author. I think it may be for the A- series parts, which have a differnet procedure from the E-series. Steve At 06:24 PM 1/30/2005 +0200, you wrote: Here's an example taken from an actual program (used on an E0 and E1). It enables COP only if it finds it disabled. First time your power up with this code, it will enable the COP in the CONFIG register. Then you must cycle power and from then on it will work correctly with COP enabled. (I had hoped for a method to automatically reset after programming but the usual CMF reset method wouldn't work immediately after this. Not even a press of the reset button would work. Only power cycling did. Haven't figured out exactly what causes this undocumented behavior.) Look up the symbols in your E reference.

(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Steve: I will try to attach a small 'bootable' prog I wrote for a 9.8304MHz hc11f1 that assembles with icc11v6 and makes an s19 file. I then run the s19 file thru srecconvert.exe (I think this is on simtel.com) to get a .bin file, then I use bedit.exe (from simtel.com) to inset 1 byte of FF in the front of the bin file... this makes the boot program in the hc11 switch to 9600 baud (assuming the 9.834 xtal) If you dont put the FF there, you need to put a 00 there... the appnote on the bootloader prog will tell you what the default baud rate to dl is... something like 1200 baud... This program can be downloaded ('booted') into the hc11 by a batch file that says mode com1:9600,n,8,1 copy thing.bin com1: If the file doesn't makeit, email me, and I'll email it to you. [Non-text portions of this message have been removed]

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.


(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )