altera


Altera Cyclone V baremetal app fail


I'm using DE1-SoC and I'm trying to run baremetal application. When I don't use interrupts in my application it runs correctly(without debugger, using loading from sd card), but when i need interrupts everything is bad. When using interrupts I have to add in my project alt_interrupt_armcc.s for placing a vector table in the beginning of image. Then I should specify an entry point for application (because now i have vector table and main function and compiler want to know what is entry I think). Also I should place VECTOR section in my scatter file (i want to load my app in ocram, so i specify 0xffff0000 + 0x10000 scope) Then I use mkimage tool with load address 0xffff0000 and same entry point. This app is working fine in debugger, i clearly see how it's working, but when I try it from SD card it fails. Preloader is good and it prints in uart that its loaded my image, but noting working (it's simple app for led blinking). I've tryed so many different combination of load addresses and entry points and all this were working in debugger, but not working in real hardware (btw debugger also use de1-soc). What is the problem and how to solve it?

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