Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT




Loading

Problem with Pic18F4431

Posted 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 Pic18F4431

Posted 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 don’t think this is enough to do anything useful with an RTOS.

RE: Problem with Pic18F4431

Posted 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


[ Back to the top ]    [ About FreeRTOS ]    [ Sitemap ]    [ ]




Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.

Latest News

FreeRTOS kernel V10 is available for immediate download. Now MIT licensed.


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

OpenRTOS and SafeRTOS