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TDA4VM-Q1: TDA4VM MCU R5F

Fredy Zhang
Expert 5450 points

Part Number: TDA4VM-Q1

Hi, Expert, 

Division by zero can caused data abnormal. So customer need to detect the error and deal with exception. 
Once the Division by Zero happened , Do we have any registers to check or any method to check that ? 
 
I have seen kip give some comments here. Customer need  more details. Please help to give your comments. Thanks. 
Regards, 
Fredy Zhang
 
  • 0
    TI__Guru*** 133581 points

    Hi Fredy, 

    Reference to Cortex-R5 Technical Reference Manual r1p2 (arm.com), the DZ bit in SCTLR can be set to generate an Undefined Instruction exception when a divide by zero occurs.

    Please note that some compilers use __aeabi_uidivmod API for division operation and this API checks the value of divisor and if it is set to 0, it ignores division operation. 

    Regards,

    kb