• How can I tell which breakpoint/watchpoint triggered (Cortex-A7)
    In a Cortex-A7 is there a register that shows which breakpoint or watchpoint has triggered a debug event? Or what's the usual way to find out? I understand that DFSR FS tells if the DABT took place due...
  • Illegal instruction caused by <UNDEFINED> instruction: 0x0000bab6
    Hello, I have precompiled 3rd party library (driver) for handling device. Library works on my PC with x64 system but when I try to run very simple "Find -> Open -> Close device" program it gives me...
  • How to access the memory mapped debug registers?
    Now that the funny PABT-behaviour is found to be (probably) caused ny debug state, I'd like to exit debug state before return from PABT exception. The ARM v7-A/R ARM says that I should write RRQ to DBGDRCR...
  • What SBCs I need to choose?
    What SBCs I need to choose? The Raspberry Pi 4 just launched in June, but we have known that many other SBCs have released recently. How should we choose the best SBCs for ourselves in these boards? Here...
  • Issue in writing a data in PMU register
    Hi, Following are the query regarding the ARM Cortex A7 MP Core. In ARM Cortex A7 MP Core,facing a issue in memory mapping the registers and accessing the registers by read and write operations. By means...