Topics

1

NXP^TM M522XX, KINETIS and i.MX RT / Error in running with const allocated over 128k of flash

« on: January 02, 2008, 03:50:39 PM »

I use MCF52233 (256k of flash) and Codewarrior 6.3
I have a program greater than 128k of flash and this problem:
If I compile from address 0 the program goes well.
If I compile from address 0x5000, because I have implemented a bigger bootlader (sd-card bootloader..), some const (that are allocated over 128k) result corrupted. I can say this because I see on the display some const (graphics) wrong. Variables are well shown on the display.

If I compile from addess 0x5000 and the program is less than 128k it goes well.

Code mode and data mode is already far (32bit)

Can someone help me?
best regards
Fabio

2

NXP^TM M522XX, KINETIS and i.MX RT / default 4 byte integer

« on: September 26, 2007, 08:18:12 AM »

In codewarrior In the project "console debug setting" there is a check box in "Coldfire Processor" that enable or disable 4byte integer. Default an integer use 4byte like in utasker project.
Can I pass to 2byte integer in the utasker project or I will have errors?

best regards
Fabio

3

NXP^TM M522XX, KINETIS and i.MX RT / Use the MCF52233 DEMO BOARD debugger for your custom circuit

« on: September 21, 2007, 01:14:15 PM »

Perhaps this is obvious, but I have made this little discovery and I hope to help some students that cannot spend much money..
I have bought the MCF52233 DEMO BOARD for 90€.
In this board there is a full MCF52233 system plus a USB-BDM debugger.
If you buy only this USB-BDM debugger from the producer, certanly it has a more beautifull package.. but you pay 250€ !!

If you want use this onboard BDM with your custom circuit (instead of the demo board) it is sufficient:
1- weld few wires from the 26 pin BDM connector on the Demo board to the BDM interface of your circuit
2- Instead of EDSI on the BDM you have to find and connect the TDI/SDI
3- cut the jumper CT1-6 on the demo board to isolate the micro on the demo board.


It is incredible that the USB-BDM plus a Demo board cost much less than the only USB-BDM

bye
Fabio

4

NXP^TM M522XX, KINETIS and i.MX RT / SD-CARD

« on: July 30, 2007, 04:40:08 PM »

Hello
I have a communication with SD-card with FAT and bootloader too to do with M52233.
if someone has some libraries that I can use to start..will be very appreciate...

best regards

Fabio