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So your problem must be in some setup that is missing; please post the full code you are using to set up the clock and PLL so we can all see where the problem...
I have posted here the full code which is using to set up the clock and PLL Kindly analyzed and give youe feedback. PLLCTL=0xB1; /*PLL off */ /*goto...
Hello. I found that FVCO locking range is from 8 MHz to 50mhz in data sheet and i have calculated Fvco=2.5mhz which is wrong right? so that might be reason of...
Hello, I am using 5 mhz clk source for uC 9s12d64 and i wanted to set bus frequency = 1.25 mhz , is it possible by using PLL ? for your information i have read...
Happy New Year to everybody Since the last time I did any embedded development, I have relegated my only windows PC to the entertainment centre. I'm now...
I have been using Motorola processors from the first 6800 through HC11 and just switched environment to Codewarrior to work with HC12. Where can I find the...
Hello everyone, I have problem in understanding the memory of MC9S12C64. i am using codewarrior 5.1,PE BDM MULTILINK, BANKED MEMORY MODEL. I have gcc prm file...
Hi - I need some help please .... I'm trying to write some code to write to the Flash area on an MC9S12DP512. But although it runs, and doesn't appear to throw...
What assembler and debugger are you using? ... ^^ this should copy the word from variable called X to variable called Y. Certainly you meant here indexed...
... I'm using CW 5.9 - and the debugger is the inbuilt (HIWAVE ?) ... OK - I did this, but it has made no difference - I think that CW accepts it the way I had...
How and where do you set up the FCLKDIV? It is not very clear what is purpose of copying code to ShadowStart. It would make sense to execute from RAM, because...
... MOVB #$4A,FCLKDIV ; Set speed of Flash , for a 16MHz Xtal MOVB #$00,FCNFG ; Disable Flash generated INTs Sorry - that was in the init routine, and I...
Except for X vs 0,X code looks almost right. One wrong thing left is that you are clearing CBEIF flag using BSET instruction, which is clearing all writeable...
... OK - I've changed all the 'X' (or Y) to be 0,X - but it has made no difference. My understanding is that using BSET is the correct way to set one bit - is...
At long last - progress has been made !!!! As Edward suggested - I have gone through all 4 banks and cleared the PVIOL & ACCERR flags like this ... ; Check...
... (I wonder how many times I wrote about this here and on Freescale forums.) BSET is correct way to set one or more bits in regular byte of memory. Registers...
Thank you for that - I have learned something there - I will need to look at the rest of my code, perhaps I am making mistakes like that elsewhere ... ?? I...
Hello, I am using a Wytec microdragon with serial monitor & trying to get a 25ms interrupt. I had it working in a previous similar project, so I believe the...
OK the modulus counter doesnt even need to be enabled or set up. Just turning on the interrupts seems to cause the lockup problem. I believe some part of the...
OK I wrote 57 irq handlers & it turns out to be the ext irq #6 was being triggered for some reason, so I disabled it via INTCR=0x00. This makes me a bit...
The action for ANY interrupt is the same: push registers and jump through the interrupt vector. If you don't have an interrupt handler at the location the...
The action for ANY interrupt is the same: push registers and jump through the interrupt vector. If you don't have an interrupt handler at the location the...
Gentlemen, Thank you both for your responses. I learned quite a bit while thrashing about for the last few days trying to resolve the problem. As it turned...
No, pull up for port E and IRQ is ***enabled by default***. See datasheets. I don't know what portal are you using to send messages to [68HC12], but it is not...
Edward, You are correct, my mistake. Most of my project is in "C", but the keypad & lcd functions are in assembly (which I tend to avoid). I finally found my...
I'm wondering why I'm getting lots of these warnings - (A12004) Value is truncated to two bytes. ?? They are all indicated with a JSR instruction. The code...
Hi Andrew, Your problem has to do with the addressing range of 68HC12 which is only 64K with 16 available bits. Whenever the specified address, using 16 bits,...
Scheduled Maintenance:
We are undertaking some essential, but extensive maintenance to improve Yahoo!
Calendar. Your Group Calendar is being migrated to a much improved version of
Yahoo! Calendar. During the maintenance period, you may not have access to your
Groups Calendar.
We sincerely apologize for this inconvenience. Your Groups Calendar is in great
shape and we are working to have it available again as quickly as possible
- Yahoo! Groups & Yahoo! Calendar Team
