# ARM7 **URL:** \ **Category:** Kernel\ **Created:** [September 27, 2014, 5:54am UTC](https://forums.freertos.org/t/arm7/927 "2014-09-27T05:54:12Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\ **Post date:** [September 27, 2014, 5:54am UTC](https://forums.freertos.org/t/arm7/927/1 "2014-09-27T05:54:12Z")
**[gerhardkreuzer](https://sourceforge.net/u/gerhardkreuzer/)** wrote on [Saturday, September 27, 2014](https://sourceforge.net/p/freertos/discussion/382005/thread/2904cedb/#d838): Hi, is there an ARM 7 compatible implementation available. My MCU is a TI UCD3138, digital power Controller, having a ARM7 core wich runs in ‘Thumb’ mode. I only Need Semaphors, maybe Queues. Thanks for helping. With best regards Gerhard ---
**Author:** ![rtel](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rtel/32/31_2.png) [@rtel](https://forums.freertos.org/u/rtel)\ **Post date:** [September 27, 2014, 10:11am UTC](https://forums.freertos.org/t/arm7/927/2 "2014-09-27T10:11:25Z")
**[rtel](https://sourceforge.net/u/rtel/)** wrote on [Saturday, September 27, 2014](https://sourceforge.net/p/freertos/discussion/382005/thread/2904cedb/#7f5d): There are lots of ARM7 ports for various different compilers, but unlike the Cortex-M ports each one is different because each has a different interrupt controller and a different peripheral to generate the tick. Look in the FreeRTOS/source/portable/[compiler] directory for whichever [compiler] you are using to see the chip specific ports. You can use one of those as a starting point but will have to update the prvSetupTimerInterrupt() function within port.c to use a peripheral available on your chip, and of course handle interrupts in a way that is appropriate for your hardware. Regards.