Quality RTOS & Embedded Software

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



Posted by saran on February 17, 2008
Hi all,

I am newbie to this freertos and ARM family processor.I have working with i.MX27 multimedia application processor for my project.I am very much interested in work with i.MX27 processor.
If i want to start my project in freertos,what are the files should be needed and where can i change the code for my application.
I have taken the STR91x as my base. I tried with the simulator as am not having the board now, with IAR 5.11 and the FreeRTOS 4.7.1 which compiles with IAR5.11. But the loop happens forever when i run, so i commented the line in 91x_Init.s file

LDR R1,[R0, #SCU_SYSSTATUS_OFST] ;Wait until PLL is Locked
ANDS R1, R1, #0x01
// BEQ Wait_Loop

As i'm working in the simulator why these codes wait for PLL to lock.
It should run without any wait or skip for simulators know.


RE: newbie

Posted by Dave on February 17, 2008
The IAR simulator is a core simulator that does not attempt to simulate the PLL registers. I would therefore expect to have to comment out that line of code for the simulator to reach main(). There may be other lines that need commenting out also. I don't know if it is possible to run the code in the simulator. You would have to setup one of the IAR simulated interrupts to generate the tick for a start.

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

Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.

Free TCP/IP and file system demos for the RTOS

Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑

FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

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

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

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

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists