Re: [sqlite] How SQLite may work on AVR or similar mcu?
Dne pátek 15 červen 2007 13:57 Eduardo Morras napsal(a): > At 14:18 13/06/2007, you wrote: > >I do not need it actually, but i am so inquisitive. > > > >I have heard that sqlite has been ported to AVR too. > >How may be solved the main storage solved on it? > >So for example, i have system with ATmega64 with 128KB of external SRAM. > >The whole ram is organized as static 60KB and 18 pages of 4KB (the last > > 4KB page lays in the internal RAM shadow), but it can be simlply > > reconfigured because the memory address logic is provided by programmable > > logic device (CPLD) > > > >As the firm data storage memory is there 1MB spi dataflash, but there is a > >possibility to replace it with 16MB chip with the same interface for an > >example. > > > >I am at 230th page of Mike Owen's book The definitive Guide to > >SQLite and with > >every next page, my image of SQL on a chip w/o OS disappears in haze. > > > >Is i wrote before, i do not need it actually, i use sqlite in linux > >environment. > > > >Thank you for let you make me a picture. > > > >Jakub Ladman > > 128KB RAM is very low. I have run it on powerpc 440 device with Yes and that is the reason, why i am asking. Somebody wrote here at mailing list, that he has ported sqlite to some architectures and the given list contains AVR eight bit risc microcontroller. At the moment, when i understood how sqlite works, i have started to have doubts that's it even possible. Jakub Ladman > uclinux but with more ram (1GB). There is minimalist os that can be > fit on a few KB, check contiki and contiki mail-list > http://www.sics.se/contiki/ > https://lists.sourceforge.net/lists/listinfo/contiki-developers it's > used on commodore 64 and other relics. I used it before in a > development card (Virtex II Pro - xupv2p). You can cut down contiki > and sqlite features. The problem will be the stack/heap that sqlite > needs for run. I don't know about ATmega64 but can't you add a fpga > with dram controller? Perhaps using a free i/o port or changing the > cpld with the fpga? > > HTH > > -- > "General error, hit any user to continue." > > > --- >-- To unsubscribe, send email to [EMAIL PROTECTED] > --- >-- - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] How SQLite may work on AVR or similar mcu?
At 14:18 13/06/2007, you wrote: I do not need it actually, but i am so inquisitive. I have heard that sqlite has been ported to AVR too. How may be solved the main storage solved on it? So for example, i have system with ATmega64 with 128KB of external SRAM. The whole ram is organized as static 60KB and 18 pages of 4KB (the last 4KB page lays in the internal RAM shadow), but it can be simlply reconfigured because the memory address logic is provided by programmable logic device (CPLD) As the firm data storage memory is there 1MB spi dataflash, but there is a possibility to replace it with 16MB chip with the same interface for an example. I am at 230th page of Mike Owen's book The definitive Guide to SQLite and with every next page, my image of SQL on a chip w/o OS disappears in haze. Is i wrote before, i do not need it actually, i use sqlite in linux environment. Thank you for let you make me a picture. Jakub Ladman 128KB RAM is very low. I have run it on powerpc 440 device with uclinux but with more ram (1GB). There is minimalist os that can be fit on a few KB, check contiki and contiki mail-list http://www.sics.se/contiki/ https://lists.sourceforge.net/lists/listinfo/contiki-developers it's used on commodore 64 and other relics. I used it before in a development card (Virtex II Pro - xupv2p). You can cut down contiki and sqlite features. The problem will be the stack/heap that sqlite needs for run. I don't know about ATmega64 but can't you add a fpga with dram controller? Perhaps using a free i/o port or changing the cpld with the fpga? HTH -- "General error, hit any user to continue." - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] How SQLite may work on AVR or similar mcu?
I do not need it actually, but i am so inquisitive. I have heard that sqlite has been ported to AVR too. How may be solved the main storage solved on it? So for example, i have system with ATmega64 with 128KB of external SRAM. The whole ram is organized as static 60KB and 18 pages of 4KB (the last 4KB page lays in the internal RAM shadow), but it can be simlply reconfigured because the memory address logic is provided by programmable logic device (CPLD) As the firm data storage memory is there 1MB spi dataflash, but there is a possibility to replace it with 16MB chip with the same interface for an example. I am at 230th page of Mike Owen's book The definitive Guide to SQLite and with every next page, my image of SQL on a chip w/o OS disappears in haze. Is i wrote before, i do not need it actually, i use sqlite in linux environment. Thank you for let you make me a picture. Jakub Ladman - To unsubscribe, send email to [EMAIL PROTECTED] -
