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gedass
Joined: 07 Dec 2011, 16:01 Posts: 525 Location: Lithuania
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05 Oct 2012, 14:17 |
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Gerd
Joined: 04 May 2012, 08:55 Posts: 61
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Fantastic news ! Any specs available ? RAM, FLASH, GPIOs, UART, SPI ? Your move to AR9331 is really clever: OpenWRT should work out of the box ...
When do think will it be available ?
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05 Oct 2012, 16:47 |
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gedass
Joined: 07 Dec 2011, 16:01 Posts: 525 Location: Lithuania
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16MB (up to 64MB SPI flash) FLASH, DDR2 64MB RAM, external SPI (3xCS) multiplexed with internal SPI flash memory, a lot of external GPIO, USB master/slave, 1x serial interface.GPIO 2.5V level. First sample for internal use after 4 weeks. Are we going to do mass production is not clear yet.
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05 Oct 2012, 17:17 |
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bluespray
Joined: 26 May 2012, 01:19 Posts: 66
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Sound like you guys also double the carambola's specs. What's the targeted price compared to the carambola?
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05 Oct 2012, 19:23 |
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gedass
Joined: 07 Dec 2011, 16:01 Posts: 525 Location: Lithuania
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05 Oct 2012, 19:27 |
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NaYthan
Joined: 14 May 2012, 15:48 Posts: 196
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I can't find a datasheet on the AR9331, any chance you could upload that, or is it under a NDA? If you can't share the datasheet then perhaps you could copy the feature list from it (GPIO details, available hardware interfaces besides SPI, UART & USB, CPU specs, etc.)
I imagine there'd have to be some more interfaces shared with the GPIO pins, otherwise one SPI and only one UART sounds a bit limiting. Most people will want to use SPI for SD Cards, and the one UART will be occupied with a serial terminal as with the Carambola1. I suspect some of those GPIO's will also be used for the usual Ethernet interface(s)?
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08 Oct 2012, 16:10 |
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gedass
Joined: 07 Dec 2011, 16:01 Posts: 525 Location: Lithuania
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Yes Atheros has very limited interface list insted Ralink. SPI bus is already used for internal flash.Additional spi cs1,2 pins are shared with uart rx and tx pins ;-( More info about chip private only.Sorry.
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08 Oct 2012, 16:33 |
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NaYthan
Joined: 14 May 2012, 15:48 Posts: 196
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Hm, can you say anything about GPIO toggle speeds? Maybe it's possible to circumvent the need for a second UART by emulating some interfaces in software with reasonable speed. Like another serial interface (UART or SPI) or something like PWM (driving an H-Bridge or Servo directly from those GPIO Pins could mostly eliminate the need for an external controller -Although Servo's require a rather precise timing-). Otherwise you might consider putting an FT2232H (High Speed USB 2.0 UART/IO bridge IC) on the dev board for the Carambola2. That way the Carambola2 could have a lot of additional (high speed) interfaces and thanks to the added RAM compared to the Carambola1 it could even be used to drive small TFT Displays with reasonable framerates and resolutions. Right now I don't see any other choice to make the Carambola2 as versatile in hardware projects as the Carambola1 than to add a USB enabled µC or bridge IC.
A little OT: Since FT2232H breakout boards aren't readily available and since they'd complement the Carambola (1 & 2) perfectly it'd be great if you included one in your product line.
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09 Oct 2012, 16:23 |
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paco
Joined: 07 Jan 2012, 00:14 Posts: 50
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Hello I think a uSD card slot would be very usefull. Bye
_________________Paco www.tranquinet.com
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09 Oct 2012, 16:29 |
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NaYthan
Joined: 14 May 2012, 15:48 Posts: 196
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09 Oct 2012, 16:35 |
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