Rockbox Development > New Ports
Rockbox Player - Project to design and build a Free/Open hardware audio player
casainho:
ARM7 for Rockbox? - I asked on IRC and got this replies:
- I would go with something faster - to support CPU-heavy codecs such as the high complexity AAC profiles (and Monkey's);
- yes, ARM7 is a bit of yday's tech;
- ARM9 is a pretty good choice, yeah.
I also would like to have something simple, cheap, low energy - but I want ALL audio files to be played on there, so, ARM9!
So, is this board ok? - Dev board - http://www.kwikbyte.com/KB9202.html
I found one that have all we need(less the DAC) for $225 - highlights:
# 180 MHz, 200 MIPS ARM9 highly-integrated core - Atmel AT91RM9200
....
scharkalvin:
--- Quote ---So, is this board ok? - Dev board - http://www.kwikbyte.com/KB9202.html
--- End quote ---
At first glance it looks ok, ($200) but will need LCD, A/D-analog, and kb added.
If the jtag port supports "wiggler" hw, then jtag will be cheap under linux/gdb.
casainho:
--- Quote from: scharkalvin on January 05, 2008, 06:35:20 PM ---
--- Quote ---So, is this board ok? - Dev board - http://www.kwikbyte.com/KB9202.html
--- End quote ---
At first glance it looks ok, ($200) but will need LCD, A/D-analog, and kb added.
If the jtag port supports "wiggler" hw, then jtag will be cheap under linux/gdb.
--- End quote ---
If you click on buy now will appear an option to buy in conjunction a bw LCD for $25 :-) - or we use that LCD or other "from Nokia", selling at Sparkfun.
That MCU don't have a A/D :-( - It looks like we can't find an ideal SOC...
spark:
--- Quote from: casainho ---I also would like to have something simple, cheap, low energy - but I want ALL audio files to be played on there, so, ARM9!
--- End quote ---
going for ARM9 would make sense as far as supporting all codecs (and video codecs) is concerned. but if we want a music only player, i guess ARM7 should suffice. since we would want our hardware to have long support life, maybe ARM9 will be a better choice.
--- Quote from: casainho ---So, is this board ok? - Dev board - http://www.kwikbyte.com/KB9202.html
I found one that have all we need(less the DAC) for $225 - highlights:
# 180 MHz, 200 MIPS ARM9 highly-integrated core - Atmel AT91RM9200
....
--- End quote ---
i think i will prefer the AT91SAM9260 processor over the AT91RM9200 processor because it includes A/D converter, I2C, and NAND flash controller on chip.
a decent dev board is available for AT91SAM9260 at 139 Euros.
http://www.olimex.com/dev/sam9-L9260.html
in the future (for RB-v2) we can easily upgrade to AT91SAM9261 which is the same chip as 9260 but with an integrated LCD controller. so we will not have to do any code changes.
http://www.atmel.com/dyn/products/product_card.asp?part_id=3638
(only issue is that it is a BGA package. but i hope by then we will have some experience/techniques to handle BGAs :)
dev board for this will be available soon
http://www.olimex.com/dev/sam9-L9261.html
--- Quote from: casainho ---That MCU don't have a A/D :-( - It looks like we can't find an ideal SOC...
--- End quote ---
AT91SAM9261 is the perfect SoC for us if we can use BGA,
or else we can settle for AT91SAM9260
casainho:
Ok, and now, what about a LCD for that dev board?
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