How to run FreeRtos on MSP430
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From: brOS on 11 Mar 2010 04:16 > >>> >> But I have one more question? How to write ISR for MSP430 using IAR and >> FreeRTOS. I tried to use #pragma directive but it not works. The problem is >> that there is no examples of ISR interacting with FreeRTOS. I looked for >> TickISR in FreeRTOS and it is written in assembly, and I would like to >> write my ISR in C... >> Please help.... >> > > >Look in the FreeRTOS\Demo\msp430_IAR\serial directory of the FreeRTOS >download - there is a very basic UART driver that has an interrupt that >interacts with the kernel. Generally GCC is the only compiler that >allows the whole thing to be done in C *if* you want the ISR to be able >to cause a context switch. > >-- > >Regards, >Richard. > >+ http://www.FreeRTOS.org >Designed for Microcontrollers. More than 7000 downloads per month. > >+ http://www.SafeRTOS.com >Certified by T�V as meeting the requirements for safety related systems. > > How should I configure FreeRTOS to be able to run it on MSP430f2274. The problem is it has only 1KB of RAM. I tried to run FreeRTOS on MSP430f449 and it works, but when I try to run it on MSP430f2274 FreeRTOS it can't allocate memory for tasks. I had to reduce size of heap because of its small RAM but when I do that I have a problem with memory allocation. I am using IAR workbench.... Please help ... Regards, brOS --------------------------------------- Posted through http://www.EmbeddedRelated.com |