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FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
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GCC port for LPC23xxx and SWIPosted by Martin Velek on November 18, 2009 Hello, I am trying to compile(gcc version 4.4.1 Sourcery G++ 4.4-70, FreeRTOS v6.0.0) a project for lpc2478. However the compiler stops a produces error: c:\Temp\ccmcATSa.s:1734: Error: missing expression -- `swi'. As I know, swi instruction should take one number parameter. If I replace #define portYIELD() __asm volatile ( "SWI" ) with #define portYIELD() __asm volatile ( "SWI 0" ), all is ok. Could you help me what I am doing wrong? Thank you. RE: GCC port for LPC23xxx and SWIPosted by Dave on November 18, 2009 You are not doing anything wrong, its just that some assemblers have pseudo instructions while others don't. "SWI 0" is the complete and right syntax, but some assemblers will allow just SWI without the 0 and default the parameter to 0 for you.
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