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  • That has done the trick. Thanks for looking into this for me.

  • I have some example code from IAR using embOS that just flashes an LED. I have found that the same thing happens with this code also. As soon as the call to OS_ARM_MMU_Enable is executed the QSPI registers become unavailable. I have attached the project for you to have a look at. forum.segger.com/index.php/Att…73359ebe499f4d1facf85f682 Thanks.

  • Hi, We are currently using embOS v4.16 for ARM in an IAR EWARM environment, with the target being a Renesas RZA1H processor. In the file rtosinit_R7S72100.c, in the call to __low_level_init() ,if I enable the SPI Multi I/O bus controller, add the MMU entries to the translation table and then call OS_ARM_MMU_Enable(_TranslationTable) I've found that the registers for the SPI Multi I/O become unavailable. I have attached 2 images to show the registers before and after enabling the MMU. forum.segge…

  • Using openVG with embOS

    Allan R - - embOS related

    Post

    Thanks to you both for your replies. It turns out that it was the MMU and the caches. In RTOSInit_R7S72100.c the cache mode for the 10MB internal mirror RAM was set to Write-Back, changing it to Write-Through solved the problem. Thanks again, Allan

  • Using openVG with embOS

    Allan R - - embOS related

    Post

    Hi, I have an openVG demo running on a Renessas RZA1 demo board. The demo runs fine when there is no rtos involved. I just have a function that I call from main with a loop that rotates a coloured rectangle. When I introduce embOS (embOS ARM IAR V6) into the demo and call the same function from a single task, it stops working. The task runs fine, but the output to the display is wrong. It's like the frame buffer isn't getting the correct data. One thing I have noticed is that the project is usin…