Re: [Paparazzi-devel] New µC Target with FPU?

[antoine drouin]

By the way, could we get a head up on tinyV3 development ?

On Sun, May 2, 2010 at 11:25 PM, Pat Hickey <address@hidden> wrote:
> If you're interested in more computing power and more interfaces,
> adding a single board computer (Gumstix, Beagleboard etc) to
> supplement the Paparazzi system is widely practiced. I ported
> Paparazzi airborne code to run on a Linux SBC -
> http://moreproductive.org/autopilot/ so that I could add USB camera
> interfaces, wifi, and so on. Working on top of Linux with widely
> available libraries, programming languages, etc. makes it easier to
> write the kind of powerful applications you'd want an FPU for anyway,
> right?
>
> On Sun, May 2, 2010 at 5:07 PM, antoine drouin <address@hidden> wrote:
>> Hello world
>>
>> My 2 cents...
>> I believe Lisa/L in its current form is more "powerful" than the
>> architecture you describe. The 72Mhz Cortex M3 ( STM32F103RE6) is
>> ideally suited to handle fast IOs, can run FreeRTOS and features 64k
>> of RAM and 512k of flash. ST just released an improved version with
>> 96k of RAM and 1M flash ( STM32F103RG ) which is pin compatible and
>> that I intend to use as soon as I can source it.
>> For the heavy computations and ease of programming, the OMAP3530
>> contained in the Gumstix Overo runs at 600MHz, feature 256M of RAM and
>> 256M of FLASH and runs Linux. This natively has a TCP/IP stack as well
>> as drivers for a vast panel of peripherals ( Wifi adapters, Webcam,
>> etc...)
>> I have kept the STM32 on this design because I find it easier and more
>> efficient to program low level IOs on an OS-less microcontroller than
>> on Linux. The communications between the STM and the Overo are done
>> through SPI, served by DMA on both sides. At the moment the Linux side
>> uses the generic "spidev" driver but I plan on having a dedicated
>> kernel driver to handle them in an even more efficient way.
>> mmmm, and I did not mention the C64 DSP core that is also found in the
>> Overo chip, in case you need to crunch numbers even faster than what
>> the Cortex-A8 can do.
>>
>> Best Regards
>>
>> Poine
>>
>>
>> On Sun, May 2, 2010 at 4:45 PM, Francois ALIBERT <address@hidden> wrote:
>>> Hello everybody.
>>>
>>>     I recently saw new hardwares Tiny V3, and LISA, based on ARM
>>> architectures. I worked few time ago with Renesas SH2A based
>>> microcontrollers. A variant of this superscalar core includes a
>>> single/double precision foating point unit (FPU). Renesas made available a
>>> new µC (the SH7216), that integrates many interesting things: it can run up
>>> to 200 MHz, and has: 1MByte of Flash, 128 kByte of RAM, SPI, SCI, Motor
>>> control drivers (input/output PWM). USB and Ethernet driver. There are
>>> software tools (reel time kernels, TCP-IP stacks) that are disponible for
>>> free (FreeRTOS, uIP) for using or for evaluation (µC/OS-III, µC/TCP-IP).
>>>
>>> I used a predecessor of this target, they are very powerful and, do not have
>>> many bugs...
>>>
>>> What about making a very powerful autopilot board based on this? Paparazzi
>>> project will introduce more and more capabilities, some on them are from now
>>> on (EKF for AHRS) CPU time hungry. Introduction of a controller integrating
>>> a FPU will have to be considered soon or late. And of fact of using full
>>> RTOS and TCP-IP software (free software and large memories size) could
>>> introduce new capabilities...
>>>
>>> Renesas SH7216:
>>>
>>> http://www.renesas.eu/products/mpumcu/superh/sh7216/sh7216/sh7216_root.jsp
>>>
>>> FreeRTOS:
>>>
>>> http://www.freertos.org/
>>>
>>> FreeRTOS for SH7216
>>>
>>> → click on Supported Devices ->Renesas (SuperH, H8S) ->SuperH (SH-2A FPU)
>>> SH7216 using the Renesas compiler and HEW
>>>
>>> TCP-IP (Application Notes and Sample Code)
>>>
>>> http://www.renesas.eu/products/mpumcu/superh/sh7216/sh7216/Application_Notes.jsp
>>>
>>> Surch on the page for: TCP-IP
>>>
>>> Micrium :
>>>
>>> http://micrium.com/page/home
>>>
>>> µC/OS-III for SH7216 and SH7216 evaluation board:
>>>
>>> http://bookstore.micrium.com/index.php?l=product_detail&p=20
>>>
>>> Regards
>>>
>>> _______________________________________________
>>> Paparazzi-devel mailing list
>>> address@hidden
>>> http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>>>
>>>
>>
>>
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