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> Pocketpenguin Phone Rom, Discussion of the ROM for the MXC300 Pho
Ferret-Simpson
post Jul 27 2006, 01:28 PM
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So. What? Gonna be linux based, (Of course.) What will we need? I'm gonna guess this'll be based on the OpenEmbedded toolkit. A Bootstrap base? I can't see us needing a GUI on a phone emulator. . . So we'll need Stacks, and an interface to the iMX.

Things that are going to need alot of thinking:

The data protocol for the USB connection to the iMX. . . We have the Serial link for AT control, but 3G data, GPRS data, and videophone data will all need to go on the USB bus. . . What else? MMS's, Access to the data on the SIM card, (Own number, SIM-phonebook: Will need a tie in to our AddressBook in the PDA OS. . .)

The software that controls the RPU and DSP. . . Needed functions?

It's going to have to be able to wake the iMX so that the iMX can handle CallerID, send any required information to the twin displays and to bluetooth (And whatever else you guys route it to wink.gif Caller log?)

Genii (Geniuses?) give me your opinion.
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Ferret-Simpson
post Jul 31 2006, 02:54 AM
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I was in fact referring to the low level stuff.

And no, sorry that's wrong. There are in fact 3 concepts. The single-CPU, the Black-Box method you're talking about, involves the use of an all-in one box into which you plug in your audio. Such as the one we looked at on Sparkfun.

The third option we're using is similar, and is displayed neatly on the HTC Universal and well. . All the OTHER HTC phones. They have a separate communications processor, in their case a Qualcomm unit. However this embedded processor needs it's own OS to function, hence why on the XDA-Developers site you get links to "Phone ROM" and other variations on that theme. This phone rom is an Operating system and set of Stacks that runs on the Communications (Baseband) Processor, and provides an emulation of an AT modem for the PDA CPU.

That's how it works in the XDA, the Motorola A-Series, and how Freescale themselves (Manafacturer of both the chips we're using) have explained to me it works. So what we are talking about IS the low level kernel driver, but to run on the phone processor, which DOES need one to operate.
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Ferret-Simpson   Pocketpenguin Phone Rom   Jul 27 2006, 01:28 PM
Da_Blitz   mmm the stack from freescale should cover all of t...   Jul 27 2006, 06:12 PM
Ferret-Simpson   You forgot the WCDMA layer. And as far as I know, ...   Jul 28 2006, 01:06 AM
Da_Blitz   im hopping that it just acts like a seriat modem t...   Jul 28 2006, 02:49 AM
Ferret-Simpson   http://www.forum.nokia.com/info/sw.nokia.c...1_2_e...   Jul 28 2006, 07:19 AM
Da_Blitz   mmm, firmwares still a problem as the binary is ow...   Jul 29 2006, 08:06 AM
Ferret-Simpson   I think we may need to look at coding our own stac...   Jul 29 2006, 09:03 AM
Da_Blitz   funny thing is the AT structure is very loose from...   Jul 30 2006, 04:57 AM
dhns   QUOTE(Da_Blitz @ Jul 30 2006, 01:57 PM)Ok i g...   Jul 31 2006, 01:59 AM
Ferret-Simpson   QUOTE(dhns @ Jul 31 2006, 10:59 AM)QUOTE(Da_B...   Jul 31 2006, 02:12 AM
dhns   QUOTEThe phone ROM is flashable, so at any time du...   Jul 31 2006, 02:42 AM
Ferret-Simpson   Not me. I'm a pretty good fixer though (I say ...   Jul 30 2006, 09:20 AM
Ferret-Simpson   I was in fact referring to the low level stuff. A...   Jul 31 2006, 02:54 AM
Da_Blitz   GPRS is not out of date, thats like saying that co...   Jul 31 2006, 03:43 AM
Da_Blitz   found a link that could be handy: http://www.edabo...   Aug 5 2006, 02:52 AM
Ferret-Simpson   Hmm, sweet. Keep that in mind. Note on the Stack...   Aug 6 2006, 03:48 PM
Da_Blitz   that was probbelly for the single chip designs whe...   Aug 6 2006, 06:07 PM


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