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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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Problem with Pic18F4431Posted by Nobody/Anonymous on February 27, 2005 I am having problems getting FreeRTOS to work with a Pic18F4431 - it works fine with various other processors The problem is that T1_CCP1_T3_CCP2 does not get defined in timers.h In fact all Timer3 #defines are #included out on all the xx31 (motor control) processors can anyone suggest anything Steve RE: Problem with Pic18F4431Posted by Richard on February 27, 2005 You can use any timer that is capable of producing the tick frequency you require. On the 4431 I think timer 5 is probably the easiest as this the closest to the original timer 3 implementation
. however the Pic18F4431 only has 768 bytes of RAM. I dont think this is enough to do anything useful with an RTOS. RE: Problem with Pic18F4431Posted by Nobody/Anonymous on February 27, 2005 Thanks Richard Your right about the ram and it doesnt appear that any Pic with 3ph motor speed control kernal has any more. I guess the speed control will have to be divorced from the rest of the control system
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