SAM7-ex256 vs SAM7-256 dev board

Development Boards MicroMod
1

Hi all,

Fast question, I have both SAM7 boards, and I can program the SAM7-256 board just fine, but the SAM7-ex256 board (the once that comes with the LCD) I’m having issues…

I’m using the arm-usb-ocd.

For those using the ex256 board, what jumpers did you use? I noticed that I must have the “erase” jumper on (connected)

Anything else? Its taking 108 seconds to program, but after that (I’m assuming its a timeout), nada…yet the same code on the same programmer programs in seconds and works on the Sam7-256 board…same files for both…

Thoughts?!

~Kam (^8*

2

Hi all,

Okay, I’m of the position that my new SAM7-EX256 is bad…can you guys check out my logic to make sure I’m thinking right?

#1. I have a working SAM7-256 dev board

#2. I have a new working(?) SAM7-ex256 board

#3. Using ARM-USB-OCD

#4. Have program that toggles PA3

#5. Have LED on PA3 and 3.3v, light toggles just fine on SAM7-256 board

#6. Unplug JTAG cable and move to SAM7-ex256.

#7. programs just fine…takes approx 3 seconds

#8. Have LED on pins 1 (PA3) and 18 (+3.3v) on ext

Nothing.

It’s acting as if the board is halted or ???

Same settings (gcc) for both boards…same dev tools, same scripts etc, only diff between the 2 is the hardware, same everything else…

BTW, I can pick up a radio station on the speaker on the SAM7-ex256 board!!!

Here are my jumper settings on the sam7-ex256 board

Erase=OFF

JTAGSEL=OFF

TST=off

VREF=on

PHY-PD=off

CTS=off

DRXD=1&2 (not 2&3)

DTXD=1&2 (not 2&3)

CAN-T=on

STNB=1&2 (not 2&3)

Headphone/speaker=2&3 (speaker)

I’m stumped! If you look at James P Lynch “Nokia 6100” doc, the photo on the cover is 100% my setup (jumpers etc)

~Kam (^8*

3

Have you checked the setting of NVGPM bit 2 ?

It must be set to one to boot from flash, otherwise it boots SAMBA from ROM.

Regards

Magnus

4

Hi Mangus,

I’m gonna sound like a doofus, but how do I check that?

~Kam (^8*

5

Use OpenOCD telnet interface to get the information:

flash info 0

and:

at91sam7 gpnvm <set|clear>

at91sam7 gpnvm 0 2 set

http://openfacts.berlios.de/index-en.ph … c_Commands

/Magnus

6

Success! You’re the man! That was it…