STM32F415 bus fault's with random adress

[flauwear]

Posted on January 21, 2014 at 07:45

Hello, I use stm32f415 and have bus fault with random adress. For example the content of BFAR register is 

0x268dfb8; 

0Ñ…4B404288; today i have 0xE000ED38. And frequency of bus fault change when I change the priority of DMA. With low DMA priority I have bus fault after 1-2 hours of programm work, with very high dma priority I have bus fault after 1-2 minutes. Please help me, what i must to do.

[flauwear]

Posted on January 21, 2014 at 07:52

Now I have another one bus fault with the same adress 0xE000ED38. Where is this adress, and how i can to know what is it in this adress?

[waclawek.jan]

Posted on January 21, 2014 at 08:18

> Now I have another one bus fault with the same adress 0xE000ED38. Where is this adress,

It's the BFAR register's address... You need to have a look at the other relevant register's content, mainly BFSR/CFSR, and also LR and stack content. See 2.4 in PM0214. JW