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The ? selection ? of ? an ? RTOS ? can ? be ? one ? of ? the ? most ? daunting ? aspects ? of ? an ? embedded ? system ? development. ? With ? μ EZ ? ?
the ? primary ? features ? of ? common ? multi ‐ tasking ? operating ? systems ? are ? abstracted, ? thus ? easing ? the ? transition ? to ? an ?
open ? source ? or ? low ‐ cost ? RTOS. ? The ? μ EZ ? ? OSAL ? provides ? applications ? access ? to ? the ? following ? features ? in ? an ? OS ‐
independent ? fashion: ?
?
?
?
?
Pre ‐ emptive ? multitasking ?
Stack ? overflow ? detection ?
Unlimited ? number ? of ? tasks ?
?
?
Queues ?
Semaphores ? (binary, ? counting, ? mutex) ?
?
The ? μ EZ ? ? sub ‐ system ? drivers ? utilize ? the ? OSAL ? functions ? to ? provide ? protected ? access ? to ? the ? processor ?
peripherals. ? The ? sub ‐ system ? driver ? API ? functions ? are ? typically ? protocol ? layer ? interfaces ? (TCP/IP, ? USB, ? etc) ?
designed ? as ? high ‐ level ? access ? routines ? such ? as ? open, ? close, ? read, ? write, ? etc. ? where ? possible. ?
?
μ EZ ? ? is ? ideally ? suited ? for ? Embedded ? Systems ? with ? standard ? features ? such ? as: ?
?
?
?
?
?
?
?
?
?
?
Processor ? and ? Platform ? BSPs ?
(Board ? Support ? Packages) ?
Real ? Time ? Operating ? System ? (RTOS) ?
Memory ? Management ?
NAND/NOR ? Flash ?
SDRAM ? and ? DDR ? Memory ?
TCP/IP ? stack ?
USB ? Device/Host ? Libraries ?
Mass ? Storage ? Devices ?
LCD ? Displays ? with ? Touch ? Screen ?
Input ? / ? Output ? Devices ?
?
8. Configuring ? Rowley ? CrossWorks ? CrossStudio ? for ? ARM? ? for ? J ‐ Link ? Flashing ?
1) See ? the ? document ? “uEZ ? ? Software ? Quickstart ? Guide” ? for ? details ? on ? how ? to ? download ? the ? uEZ ? ? source ? code ? and ?
setup ? the ? Rowley ? CrossWorks ? compiler. ? ( http://www.teamfdi.com/products/support/support_dk ‐ ts.shtml ) ?
software ? quick ? start ? guide ?
2) Plug ? in ? the ? J ‐ Link ? device ? into ? the ? PC ? and ? install ? any ? drivers ? as ? directed. ?? The ? Segger ? J ‐ Link ? drivers ? can ? be ? found ? at ?
http://www.segger.com/cms/jlink ‐ software.html ? with ? additional ? information ? at ?
http://www.segger.com/cms/development ‐ tools.html . ?
3) Plug ? in ? the ? J ‐ Link’s ? JTAG ? connector ? to ? the ? SOMDIMM ? board ? at ? J3 ? with ? the ? JTAG ? adapter. ?
4) Select ? Target ? menu ? and ? choose ? Targets . ? The ? following ? list ? will ? appear ? to ? the ? right. ?
?
5) Right ? click ? on ? “Segger ? J ‐ Link” ? and ? select ? Properties ?
6 ?
?
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