Micro Controller Advice/Help Needed

Everything you have listed can be done easily.

Is this for a one off project or are you looking at 10K-a-year ??

Any processor is cheap at 10k.

How fast do you need to have this done ?? Weeks, months ??

Do you have a developemnt system you are already familiar with ??

Are you looking for a consultant to help you get it done ??

What part of the world are you in ??

thank you

donald

That amount of flash storage is available on-chip (e.g., NXP's LPC2138), however since

you may want to look at the serial (SPI or I2C) interfaced EEPROM memories (e.g., Microchip's 25LC1024 (note it's sized in bits)) or at using an SPI-interfaced MMC/SD card which would give you the option of an easy and removable interface to a desktop machine.

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Rich Webb     Norfolk, VA

Rich - It seems like the LPC2138 or LPC2136 might provide a very simple solution. Correct me if I'm wrong, but it looks like with one of these chips, all I'd need to do is get a UARTRS232 interface chip to put in between the LPC213X and my XE2422H. Add on a power adapter and an RJ-11 jack, and that's literally 100% of my BOM (or so I'm thinking).

The only other thing I'm not quite clear on is the best mechanism to program the LPC chip's flash prior to shipping a product. On a test device, this should be easy, but I'm assuming I'd have to provide some sort of harness for programming this thing. I guess I could use the other UART and provide some sort of serial port pinout on the side of the board?

Dean

modem.

modem,

store

Probably (modulo the necessary passives, connectors, etc.).

Do get the part's User Manual, which goes through the details of its IAP (in-application programming) command set and sequencing. The link to the user manuals tends to be buried at the bottom of the part's page, with the much briefer data sheet up at the top.

The NXP LPC2000-series chips come with an integral serial bootloader and NXP provides a PC-side app to load the code, so you'll not need much besides a serial cable. The ISP will use UART0, so you could either use UART1 to the modem or use UART0 for both and provide the necessary isolation so the PC serial port and the modem aren't fighting each other.

Another alternative would be to use the chip's JTAG interface.

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Rich Webb     Norfolk, VA

Please do not delete attributions for anything you quote. Attributions are those initial lines of the form "Joe wrote".

Please do not top-post. Your answer belongs after (or intermixed with) the quoted material to which you reply, after snipping all irrelevant material. I fixed this one. See the following links:

(taming google) (newusers)

--
 [mail]: Chuck F (cbfalconer at maineline dot net)
 [page]: 
            Try the download section.

Please, if you can not keep up with the postings then just shut up.

donald

[snip]

Also get the LPC213x Errata, at

because the LPC MAM (Memory Accelerator Module) has bugs that you must work around by configuring the MAM in a particular way. Or make sure to get new chips with these bugs corrected.

--
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .

simple

I appreciate that. I'm a software engineer by trade, so I expect to be able to work around any such problems relatively easily. The thing I'm much much more concerned about is determining the right set of components for integrating the LPC213X with the XECom modem -- passives, plus whatever I need to make the UARTs on the LPC into RS232s that can communicate with the modem and a computer input.

Does anyone out there have the expertise and the willingness to help with this? I'm assuming it would be a couple hours of time, and I'd be happy to pay a reasonable rate.

I sent you an email to the address shown here. Do you check your yahoo.com email account?

Rick

Rick -

I do check it. Please try again. I didn't receive an email. It's deanvesuvio [a*t] yahoo {[dot]} com

I sent another email a couple of hours ago. Did you receive that?

Rick

modem,

store

there is a open source embedded board based on PowerPC CPU available at

which could fit your needs. As this is open source OS based board you will be able to perform any changes you want in the code.

Technical details

• PowerPC processor: 266 or 333 MHz clock frequency * 1 or 2 ESD protected Ethernet ports * miniPCI sockets for 802.11 wireless cards and other expansion * 32-512 MB SDRAM, 64 bit wide for high memory bandwidth * 8 MB NOR FLASH for system BIOS and programs * True IDE CompactFlash (CF) for custom OS and applications like databases, FTP, emails, logs, proxy * 7 to 36 V DC supply through DC jack or Pover Over Ethernet * 2 RS232 serials ports (1 DB9 male socket), RS485 interface header * JTAG interface * Hardware and software watchdog timers * LM75 thermal monitor * GPIO header * USB 2.0 host * I2C bus header (can be used for front panel interface) * 2 LEDs and 1 pushbutton switch, freely programmable * Extender connector for optional Zigbee, HSDPA, GPRS, GPS, sensors and

other modules * Board size: 115 mm x 97 mm * CE certified * Operating systems ported: OpenWRT, FlashSYS with revolutionary AJAX GUI, OpenEmbedded, ECos RTOS * OpenRB consumes less than 4W of power and is fully ROHS compliant

Edgars

No I actually didn't get it. Can you post an email address and I'll try sending a mail to you? Or, check the spelling of mine. It's just a regular Yahoo mail account, so I'm not sure what's going on.

D

You can reach me at the email address on this post.

I have sent you another email from a Yahoo account. I received my cc of that email. So you should get your copy.

Rick