(New York) Trade ARM9 EVBs for ARM7

Hello,

I can understand that you might not like the board (I hardly ever use eval boards) but I found the chip OK. I designed one in recently and apart from an odd issue with a chip errata (documented and my own fault for using some old revision chips) I found it reasonably easy to get up and running. If you use the ST library to get started and then kick it out progressively as you go it's not too bad at all. I thought the chip user manual and support library documentation was quite good.

I do use the full paid for Keil tool set for ARM and had previously used the Atmel SAM parts.

Having said all that I've given up on the STR9 in favour of the STM32 (ARM Cortex parts) - similar performance and cheaper. I can't help but feel that the STR9 family won't be developed much further.

Michael Kellett

l

It's usually the fastest way to bring up a new design. At my day job I need to wait months for arguments and paperwork before a board can be brought into existence; at home, I don't want to spend the money on a PCB until I've proved out some of the concept on a breadboard.

TI has exactly the right idea - they make little EVBs with a ZIF socket and 100 mil headers all round. I'm using one of those to bring up an MSP430F2370 design right now and it is just a delight.

t

Eh. The documentation did improve between the FW and FAW parts, but I'm working with an FW chip. The documentation is unbelievably poor. I challenge you to get even as far as toggling a GPIO based solely on the information in the chip datasheet.

M

at

I agree with that analysis. I'm not a big ST fan, to be honest, but I would like to use the STM32 here too. Unfortunately the EVB (again!) is the little STM32 circle device, which has an onboard Raisonance debugger and no real JTAG port. Since I use CrossWorks, which doesn't support the Raisonance JTAG adapter, I'm annoyed :/

Yes of course I could buy an Olimex header board but I was really hoping to work with something I have on hand, so I can get a useful chunk of work done this weekend. I think I'm going to have to hack the STM32 board so I can use it with a normal JTAG debugger.

Still doesn't give me all the I/Os but it gives me enough to start working on my project, at least. And it has an accelerometer onboard, which saves me from hand-wiring to my own.

If you can live with 8 bits Atmega169, I can get you one with accelerometer (8 pins CLCC) and a 3 digits LCD. It has both SPI and JTAG connections. Since we are moving to 6502, we can unload our AVR inventory really cheap.

I have several thousand scrap PCBs with an MSP430 and an ADXL322. Unfortunately I need more flash and a much faster MCU.

Geez, can you say what happened?

Can I get some :)?

--
		Przemek Klosowski, Ph.D.

6% of them have soldering defects because of a solder mask issue. For various reasons we can't trust them for the application at hand.

No. But I can send you some bare ADXL322s if they are of use, I have many (many) sample chips lying around. Email me. Be warned, they are QFN package.